“Building Scalable Cisco Internetworks”, also known as 642-901 exam, is a Cisco certification.
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642-901 BSCI
Building Scalable Cisco Internetworks

Exam Number: 642-901
Associated Certifications: CCNP, CCIP, CCDP
Duration: 90 minutes
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Building Scalable Cisco Internetworks (BSCI 642-901) is a qualifying exam for the Cisco Certified Network Professional CCNP®, Cisco Certified Design Professional CCDP®, and Cisco Certified Internetwork Professional CCIP™ certifications. The BSCI 642-901 exam will certify that the successful candidate has important knowledge and skills necessary to use advanced IP addressing and routing in implementing scalability for Cisco ISR routers connected to LANs and WANs. The exam covers topics on Advanced IP Addressing, Routing Principles, Multicast Routing, IPv6, Manipulating Routing Updates, Configuring basic BGP, Configuring EIGRP, OSPF, and IS-IS.

Exam Topics
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

Implement EIGRP operations.
Explain the functions and operations of EIGRP (e.g., DUAL).
Configure EIGRP routing. (e.g., Stub Routing, authentication, etc.)
Verify or troubleshoot EIGRP routing configurations.

Implement multiarea OSPF operations.
Explain the functions and operations of multiarea OSPF.
Configure multiarea OSPF routing. (e.g., Stub, NSSA, authentication, etc.)
Verify or troubleshoot multiarea OSPF routing configurations.

Describe integrated IS-IS.
Describe the features and benefits of integrated IS-IS.
Configure and verify integrated IS-IS.

Implement Cisco IOS routing features.
Describe, configure or verify route redistribution between IP routing IGPs. (e.g., route-maps, default routes, etc.)
Describe, configure or verify route filtering (i.e., distribute-lists and passive interfaces).
Describe and configure DHCP services (e.g., Server, Client, IP helper address, etc.).

Implement BGP for enterprise ISP connectivity
Describe the functions and operations of BGP.
Configure or verify BGP operation in a non-transit AS (e.g., authentication).
Configure BGP path selection. (i.e., Local Preference, AS Path, Weight or MED attributes).

Implement multicast forwarding.
Describe IP Multicast (e.g., Layer-3 to Layer-2 mapping, IGMP, etc.).
Describe, configure, or verify IP multicast routing (i.e., PIM Sparse-Dense Mode).

Implement IPv6.
Describe IPv6 addressing operations.
Describe IPv6 interoperation with IPv4.
Describe, configure or verify OSPF routing with IPv6 addressing.

QUESTION 34:
What action does an EIGRP router take when it cannot find a feasible successor for
a network?
A. It examines the routing and neighbor tables for the next best path.
B. It transitions from passive to active state for that network and queries its neighbors.
C. It examines the topology for a next best path.
D. It transitions from active to passive state for the next network and queries its
neighbors.
Answer: B
Explanation:
With EIGRP, A topology table entry for a destination can have one of two states. A route
is considered in the Passive state when a router is not performing a route recomputation.
The route is in Active state when a router is undergoing a route recomputation. If there
are always feasible successors, a route never has to go into Active state and avoids a
route recomputation.
When there are no feasible successors, a route goes into Active state and a route
recomputation occurs. A route recomputation commences with a router sending a query
packet to all neighbors. Neighboring routers can either reply if they have feasible
successors for the destination or optionally return a query indicating that they are
performing a route recomputation. While in Active state, a router cannot change the

next-hop neighbor it is using to forward packets. Once all replies are received for a given
query, the destination can transition to Passive state and a new successor can be selected.
QUESTION 35:
The Certkiller EIGRP network is displayed in the following topology diagram:
You work as a network technician at Certkiller .com. Study the exhibits carefully. If
the command “variance 3″ was added to the EIGRP configuration of Certkiller 5,
which path or paths would be chosen to route traffic from Certkiller 5 to network X?
A. Certkiller 5- Certkiller 2- Certkiller 1
B. Certkiller 5- Certkiller 2- Certkiller 1 and Certkiller 5- Certkiller 3- Certkiller 1.
C. Certkiller 5- Certkiller 3- Certkiller 1 and Certkiller 5- Certkiller 4- Certkiller 1.
D. Certkiller 5- Certkiller 2- Certkiller 1, Certkiller 5- Certkiller 3- Certkiller 1, and
Certkiller 5- Certkiller 4- Certkiller 1.
Answer: B
Explanation:
Every routing protocol supports equal cost path load balancing. In addition, Interior
Gateway Routing Protocol (IGRP) and EIGRP also support unequal cost path load
balancing. Use the variance n command in order to instruct the router to include
routes with a metric of less than n times the minimum metric route for that
destination. The variable n can take a value between 1 and 128. The default is 1, which
means equal cost load balancing. Traffic is also distributed among the links with unequal
costs, proportionately, with respect to the metric.
In this question the variance 3 command is used. In this instance, Certkiller 5 can get to
Net X using the path CK5 – CK3 = metric of 10, and CK3 – CK3 = 10 as well with the FD
between CK5 – CK1 being 10 + 10 = 20. Therefore, we can load balance on any route that
had an FD of 3x the successor, or 3×20, which is 60

Important Note:If a path is not a feasible successor, the path is not used in load
balancing. This is why chose D is wrong as this path has an Advertised Distance of 25
which is greater than the successors FD. The link below refers to an example that is
nearly identical to the example in this question, except theirs used a variance of 2 and this
question used a variance of 3.
Reference:
http://www.cisco.com/en/US/tech/ CK3 65/technologies_tech_note09186a008009437d.shtml
QUESTION 36:
What is the purpose of the “eigrp stub” configuration command?
A. To increase scalability by limiting the EIGRP query range.
B. To reduce the size of the routing table by blocking the D EX (External EIGRP) routes
in the EIGRP stub router.
C. To reduce the convergence time by enabling the EIGRP stub router to propagate the
EIGRP queries from the EIGRP hub router.
D. To reduce the convergence time by enabling the EIGRP stub router to also perform
query requests to the EIGRP hub router.
Answer: A

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“Composite Exam”, also known as 642-892 exam, is a Cisco certification.
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642-892 Composite
Composite Exam

Exam Number: 642-892
Associated Certifications: CCNP, CCDP
Duration: 120 minutes
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Composite exam (642-892) is the quickest way for currently certified Cisco Certified Network Professionals (CCNP®) and Cisco Certified Design Professionals (CCDP®) to obtain recertification. The exam tests skills and knowledge pertaining to the Building Scalable Cisco Internetworks (BSCI) and Building Cisco Managed Switched Networks (BCMSN) courses. Composite may be taken to recertify CCNP and CCDP certifications; it may also be taken in place of the BSCI and BCMSN exams required for CCNP and CCDP certifications. Candidates must successfully pass both routing and switching subsections of the Composite exam to successfully pass the exam.

Exam Topics
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

Implement EIGRP operations
Explain the functions and operations of EIGRP (e.g., DUAL)
Configure EIGRP routing. (e.g., Stub Routing, authentication, etc.)
Verify or troubleshoot EIGRP routing configurations
Implement multi-area OSPF operations
Explain the functions and operations of multiarea OSPF
Configure multiarea OSPF routing. (e.g., Stub, NSSA, authentication, etc.)
Verify or troubleshoot multiarea OSPF routing configurations
Describe integrated IS-IS
Describe the features and benefits of integrated IS-IS
Configure and verify integrated IS-IS
Implement Cisco IOS routing features
Describe, configure or verify route redistribution between IP routing IGPs. (e.g., route-maps, default routes, etc.)
Describe, configure or verify route filtering (i.e., distribute-lists and passive interfaces)
Describe and configure DHCP services (e.g., Server, Client, IP helper address, etc.)
Implement BGP for enterprise ISP connectivity
Describe the functions and operations of BGP
Configure or verify BGP operation in a non-transit AS (e.g., authentication)
Configure BGP path selection. (i.e., Local Preference, AS Path, Weight or MED attributes)
Implement multicast forwarding
Describe IP Multicast (e.g., Layer-3 to Layer-2 mapping, IGMP, etc.)
Describe, configure, or verify IP multicast routing (i.e., PIM Sparse-Dense Mode)
Implement IPv6
Describe IPv6 addressing operations
Describe IPv6 interoperation with IPv4
Describe, configure or verify OSPF routing with IPv6 addressing
Implement VLANs
Explain the functions of VLANs in a hierarchical network
Configure VLANs (e.g., Native, Default, Static and Access)
Explain and configure VLAN trunking (i.e., IEEE 802.1Q and ISL)
Explain and configure VTP
Verify or troubleshoot VLAN configurations
Conduct the operation of Spanning Tree protocols in a hierarchical network
Explain the functions and operations of the Spanning Tree protocols (i.e., RSTP, PVRST, MISTP)
Configure RSTP (PVRST) and MISTP
” Describe and configure STP security mechanisms (i.e., BPDU Guard, BPDU Filtering, Root Guard)
Configure and Verify UDLD and Loop Guard
Verify or troubleshoot Spanning Tree protocol operations
Configure and verify link aggregation using PAgP or LACP
Implement Inter-VLAN routing
Explain and configure Inter-VLAN routing (i.e., SVI and routed ports)
Explain and enable CEF operation
Verify or troubleshoot InterVLAN routing configurations
Implement gateway redundancy technologies
Explain the functions and operations of gateway redundancy protocols (i.e., HSRP, VRRP, and GLBP)
Configure HSRP, VRRP, and GLBP
Verify High Availability configurations
Describe and configure wireless client access
Describe the components and operations of WLAN topologies (i.e., AP and Bridge)
Describe the features of Client Devices, Network Unification, and Mobility Platforms (i.e., CCX, LWAPP)
Configure a wireless client (i.e., ADU)
Describe and configure security features in a switched network
Describe common Layer 2 network attacks (e.g., MAC Flooding, Rogue Devices, VLAN Hopping, DHCP Spoofing, etc.)
Explain and configure Port Security,802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI
Verify Catalyst switch (IOS-based) security configurations (i.e., Port Security, 802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI)
Configure support for voice
Describe the characteristics of voice in the campus network
Describe the functions of Voice VLANs and trust boundaries
Configure and verify basic IP Phone support (i.e. Voice VLAN, Trust and CoS options, AutoQoS for voice)

QUESTION 34:
What action does an EIGRP router take when it cannot find a feasible successor for
a network?
A. It examines the routing and neighbor tables for the next best path.
B. It transitions from passive to active state for that network and queries its neighbors.
C. It examines the topology for a next best path.
D. It transitions from active to passive state for the next network and queries its
neighbors.

Answer: B
Explanation:
With EIGRP, A topology table entry for a destination can have one of two states. A route
is considered in the Passive state when a router is not performing a route recomputation.
The route is in Active state when a router is undergoing a route recomputation. If there
are always feasible successors, a route never has to go into Active state and avoids a
route recomputation.
When there are no feasible successors, a route goes into Active state and a route
recomputation occurs. A route recomputation commences with a router sending a query
packet to all neighbors. Neighboring routers can either reply if they have feasible
successors for the destination or optionally return a query indicating that they are
performing a route recomputation. While in Active state, a router cannot change the
next-hop neighbor it is using to forward packets. Once all replies are received for a given
query, the destination can transition to Passive state and a new successor can be selected.
QUESTION 35:
The Certkiller EIGRP network is displayed in the following topology diagram:
You work as a network technician at Certkiller .com. Study the exhibits carefully. If
the command “variance 3″ was added to the EIGRP configuration of Certkiller 5,
which path or paths would be chosen to route traffic from Certkiller 5 to network X?
A. Certkiller 5- Certkiller 2- Certkiller 1
B. Certkiller 5- Certkiller 2- Certkiller 1 and Certkiller 5- Certkiller 3- Certkiller 1.
C. Certkiller 5- Certkiller 3- Certkiller 1 and Certkiller 5- Certkiller 4- Certkiller 1.
D. Certkiller 5- Certkiller 2- Certkiller 1, Certkiller 5- Certkiller 3- Certkiller 1, and

Certkiller 5- Certkiller 4- Certkiller 1.
Answer: B
Explanation:
Every routing protocol supports equal cost path load balancing. In addition, Interior
Gateway Routing Protocol (IGRP) and EIGRP also support unequal cost path load
balancing. Use the variance n command in order to instruct the router to include
routes with a metric of less than n times the minimum metric route for that
destination. The variable n can take a value between 1 and 128. The default is 1, which
means equal cost load balancing. Traffic is also distributed among the links with unequal
costs, proportionately, with respect to the metric.
In this question the variance 3 command is used. In this instance, Certkiller 5 can get to
Net X using the path CK5 – CK3 = metric of 10, and CK3 – CK3 = 10 as well with the FD
between CK5 – CK1 being 10 + 10 = 20. Therefore, we can load balance on any route that
had an FD of 3x the successor, or 3×20, which is 60
Important Note:If a path is not a feasible successor, the path is not used in load
balancing. This is why chose D is wrong as this path has an Advertised Distance of 25
which is greater than the successors FD. The link below refers to an example that is
nearly identical to the example in this question, except theirs used a variance of 2 and this
question used a variance of 3.
Reference:
http://www.cisco.com/en/US/tech/ CK3 65/technologies_tech_note09186a008009437d.shtml
QUESTION 36:
What is the purpose of the “eigrp stub” configuration command?
A. To increase scalability by limiting the EIGRP query range.
B. To reduce the size of the routing table by blocking the D EX (External EIGRP) routes
in the EIGRP stub router.
C. To reduce the convergence time by enabling the EIGRP stub router to propagate the
EIGRP queries from the EIGRP hub router.
D. To reduce the convergence time by enabling the EIGRP stub router to also perform
query requests to the EIGRP hub router.
Answer: A

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“Designing Cisco network Service Architectures (ARCH)”, also known as 642-873 exam, is a Cisco certification.
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642-873 ARCH
Designing Cisco Network Service Architectures Exam

Exam Number: 642-873
Associated Certifications: CCDP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-873 ARCH Designing Cisco Network Service Architectures Exam is the exam associated with the CCDP certification. This exam tests a candidate’s knowledge of the latest development in network design and technologies, including network infrastructure, intelligent network services and converged network solutions. Candidates can prepare for this exam by taking the ARCH Designing Cisco Network Service Architectures course.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Design advanced core enterprise networks
Design campus Infrastructure using best practices
Design a High Availability enterprise network
Design a high availability WAN
Design network management services
Design IP multicast services
Describe enterprise VoWLAN design considerations

Design an enterprise data center
Design a high availability data center network that is modular, flexible and meets standards
Describe the components and technologies of a SAN network
Design an effective E-Commerce module

Design security services
Utilize firewalls
Utilize the NAC appliance
Utilize IPsec VPNs

QUESTION 34
Which technology allows centralized storage services to be shared across different
VLANs?
A. FSPF
B. FICON
C. SANTap
D. IVR
Answer: D
QUESTION 35
Which two statements correctly describe an IPS device? (Choose two.)
A. Malicious packets that have been detected are allowed to pass through, but all
subsequent traffic is blocked
B. Inline interfaces which have no IP addresses can’t be detected
C. Traffic arrives on the detection interface, is inspected and exists via the same interface
D. It resembles a Layer bridge
E. Traffic flow through the IPS resembles traffic flow through a Layer 3 router
Answer: B,D
QUESTION 36
At a certain cutomer’s site, a NAS is both physically and logically in the traffic path. The
NAS identifies clients solely based on their MAC addresses. In which access mode has
this NAS been configured to operate?
A. Layer 3 Central Mode
B. Layer 2 mode
C. Layer 3 in-band mode
D. Layer 3 Edge mode
Answer: B

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“Building Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
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642-812 BCMSN
Building Converged Cisco Multilayer Switched Networks

Exam Number: 642-812
Associated Certifications: CCNP, CCIP, CCDP
Duration: 90 minutes
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Building Converged Cisco Multilayer Switched Networks (BCMSN 642-812) is a qualifying exam for the Cisco Certified Network Professional CCNP® and the Cisco Certified Design Professional CCDP® certifications. The BCMSN 642-812 exam will certify that the successful candidate has important knowledge and skills necessary to implement scalable multilayer switched networks. The exam includes topics on Campus Networks, describing and implementing advanced Spanning Tree concepts, VLANs and Inter-VLAN routing, High Availability, Wireless Client Access, Access Layer Voice concepts, and minimizing service Loss and Data Theft in a Campus Network.

Exam Topics
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

Implement VLANs.
Explain the functions of VLANs in a hierarchical network.
Configure VLANs (e.g., Native, Default, Static and Access).
Explain and configure VLAN trunking (i.e., IEEE 802.1Q and ISL).
Explain and configure VTP.
Verify or troubleshoot VLAN configurations.

Conduct the operation of Spanning Tree protocols in a hierarchical network.
Explain the functions and operations of the Spanning Tree protocols (i.e., RSTP, PVRST, MISTP).
Configure RSTP (PVRST) and MISTP.
Describe and configure STP security mechanisms (i.e., BPDU Guard, BPDU Filtering, Root Guard).
Configure and Verify UDLD and Loop Guard.
Verify or troubleshoot Spanning Tree protocol operations.
Configure and verify link aggregation using PAgP or LACP.

Implement Inter-VLAN routing.
Explain and configure Inter-VLAN routing (i.e., SVI and routed ports).
Explain and enable CEF operation.
Verify or troubleshoot InterVLAN routing configurations.

Implement gateway redundancy technologies.
Explain the functions and operations of gateway redundancy protocols (i.e., HSRP, VRRP, and GLBP).
Configure HSRP, VRRP, and GLBP.
Verify High Availability configurations.

Describe and configure wireless client access.
Describe the components and operations of WLAN topologies (i.e., AP and Bridge).
Describe the features of Client Devices, Network Unification, and Mobility Platforms (i.e., CCX, LWAPP).
Configure a wireless client (i.e., ADU).

Describe and configure security features in a switched network.
Describe common Layer 2 network attacks (e.g., MAC Flooding, Rogue Devices, VLAN Hopping, DHCP Spoofing, etc.)
Explain and configure Port Security,802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI.
Verify Catalyst switch (IOS-based) security configurations (i.e., Port Security, 802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI).

Configure support for voice.
Describe the characteristics of voice in the campus network.
Describe the functions of Voice VLANs and trust boundaries.
Configure and verify basic IP Phone support (i.e. Voice VLAN, Trust and CoS options, AutoQoS for voice).

QUESTION 34:
The Certkiller core switches use 802.1Q trunks to connect to each other. How does
802.1Q trunking keep track of multiple VLANs?
A. It tags the data frame with VLAN information and recalculates the CRC value
B. It encapsulates the data frame with a new header and frame check sequence
C. It modifies the port index of a data frame to indicate the VLAN
D. It adds a new header containing the VLAN ID to the data frame
E. None of the above
Answer: A
Explanation:
The IEEE 802.1Q protocol can also carry VLAN associations over trunk links. However,
this frame identification method is standardized, allowing VLAN trunks to exist and
operate between equipment from multiple vendors.
In particular, the IEEE 802.1Q standard defines an architecture for VLAN use, services
provided with VLANs, and protocols and algorithms used to provide VLAN services.
Like Cisco ISL, IEEE 802.1Q can be used for VLAN identification with Ethernet trunks.
Instead of encapsulating each frame with a VLAN ID header and trailer, 802.1Q embeds
its tagging information within the Layer 2 frame. This method is referred to as
single-tagging or internal tagging.
802.1Q also introduces the concept of a native VLAN on a trunk. Frames belonging to
this VLAN are not encapsulated with any tagging information. In the event that an end
station is connected to an 802.1Q trunk link, the end station can receive and understand
only the native VLAN frames. This provides a simple way to offer full trunk
encapsulation to the devices that can understand it, while giving normal access stations
some inherent connectivity over the trunk.
QUESTION 35:
Refer to the following exhibits:
Exhibit #1:

Exhibit #2:
Study the exhibits carefully. The switchport output in Exhibit #1 displays the
default settings of interface FastEthernet 0/13 on switch Certkiller 1. Figure 2
displays the desired interface settings. Which command sequence would configure
interface FastEthernet 0/13 as displayed in Exhibit #2?
A. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic auto
Certkiller 1(config-if)# switchport trunk native DATA
Certkiller 1(config-if)# switchport trunk allowed vlan add 1,10,20
B. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan DATA

Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20
C. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode trunk
Certkiller 1(config-if)# switchport trunk native DATA
Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20
D. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan 10
E. Certkiller 1(config-if)# switchport trunk encapsulation dot1q
Certkiller 1(config-if)# switchport mode dynamic desirable
Certkiller 1(config-if)# switchport trunk native vlan 10
Certkiller 1(config-if)# switchport trunk allowed vlan 1,10,20
Answer: E
Explanation:
The IEEE 802.1Q protocol can also carry VLAN associations over trunk links. However,
this frame identification method is standardized, allowing VLAN trunks to exist and
operate between equipment from multiple vendors.
In particular, the IEEE 802.1Q standard defines an architecture for VLAN use, services
provided with VLANs, and protocols and algorithms used to provide VLAN services.
Like Cisco ISL, IEEE 802.1Q can be used for VLAN identification with Ethernet trunks.
Instead of encapsulating each frame with a VLAN ID header and trailer, 802.1Q embeds
its tagging information within the Layer 2 frame. This method is referred to as
single-tagging or internal tagging.
802.1Q also introduces the concept of a native VLAN on a trunk. Frames belonging to
this VLAN are not encapsulated with any tagging information. In the event that an end
station is connected to an 802.1Q trunk link, the end station can receive and understand
only the native VLAN frames. This provides a simple way to offer full trunk
encapsulation to the devices that can understand it, while giving normal access stations
some inherent connectivity over the trunk.
You can manually configure trunk links on Catalyst switches for either ISL or 802.1Q
mode. In addition, Cisco has implemented a proprietary, point-to-point protocol called
Dynamic Trunking Protocol (DTP) that negotiates a common trunking mode between
two switches. The negotiation covers the encapsulation (ISL or 802.1Q) as well as
whether the link becomes a trunk at all.
In the switchport mode command, you can set the trunking mode to any of the following:
1. trunk-This setting places the port in permanent trunking mode. The corresponding
switch port at the other end of the trunk should be similarly configured because
negotiation is not allowed. You should also manually configure the encapsulation mode.
2. dynamic desirable (the default)-The port actively attempts to convert the link into
trunking mode. If the far-end switch port is configured to trunk, dynamic desirable,
or dynamic auto mode, trunking is successfully negotiated.
3. dynamic auto-The port converts the link into trunking mode. If the far-end
switch port is configured to trunk or dynamic desirable
, trunking is negotiated. Because of the passive negotiation behavior, the link never

becomes a trunk if both ends of the link are left to the dynamic auto default.
802.1Q also introduces the concept of a native VLAN on a trunk. Frames belonging to
this VLAN are not encapsulated with any tagging information. In the event that an end
station is connected to an 802.1Q trunk link, the end station can receive and understand
only the native VLAN frames. This provides a simple way to offer full trunk
encapsulation to the devices that can understand it, while giving normal access stations
some inherent connectivity over the trunk.
switchport trunk allowed vlan, defines which VLANs can be trunked over the link. By
default, a switch transports all active VLANs (1 to 4094) over a trunk link. There might
be times when the trunk link should not carry all VLANs. For example, broadcasts are
forwarded to every switch port on a VLAN-including the trunk link because it, too, is a
member of the VLAN. If the VLAN does not extend past the far end of the trunk link,
propagating broadcasts across the trunk makes no sense.
QUESTION 36:
The core Certkiller switches are configured to use 802.1Q trunks. Which three
statements are correct with regard to the IEEE 802.1Q standard? (Select three)
A. The IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frame
B. The packet is encapsulated with a 26 byte header and a 4 byte FCS
C. The protocol uses point-to-multipoint connectivity
D. The protocol uses point-to-point connectivity
E. The IEEE 802.1Q frame uses multicast destination of 0×01-00-0c-00-00
F. The IEEE 802.1Q frame retains the original MAC destination address
Answer: A, D, F

Testinside 642-812 Questions and Answers : 346 Q&As
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Exam Number: 642-873
Associated Certifications: CCDP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-873 ARCH Designing Cisco Network Service Architectures Exam is the exam associated with the CCDP certification. This exam tests a candidate’s knowledge of the latest development in network design and technologies, including network infrastructure, intelligent network services and converged network solutions. Candidates can prepare for this exam by taking the ARCH Designing Cisco Network Service Architectures course.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Design advanced core enterprise networks
Design campus Infrastructure using best practices
Design a High Availability enterprise network
Design a high availability WAN
Design network management services
Design IP multicast services
Describe enterprise VoWLAN design considerations

Design an enterprise data center
Design a high availability data center network that is modular, flexible and meets standards
Describe the components and technologies of a SAN network
Design an effective E-Commerce module

Design security services
Utilize firewalls
Utilize the NAC appliance
Utilize IPsec VPNs

Question: 1
Which of these Layer 2 access designs does not support VLAN extensions?

A. FlexLinks
B. loop-free U
C. looped square
D. looped triangle
E. loop-free inverted U
Answer: B Question: 2
Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual (counter-rotating) ring topology?

A. DTP B. RPR C. SDH
D. CWDM E. DWDM
Answer: B Question: 3
Which three of these are elements of the Cisco Unified Wireless Network architecture? (Choose three)

A. cell phones
B. remote access
C. mobility services
D. network management
E. network unification
F. network decentralization
Answer: C, D, E Question: 4
Refer to the exhibit.

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

Which two of these are correct regarding the recommended practice for distribution layer design?
(Choose two.)

A. use a redundant link to the core
B. use a Layer 2 link between distribution switches
C. never use a redundant link to the core because of convergence issues
D. use a Layer 3 link between distribution switches with route summarization
E. use a Layer 3 link between distribution switches without route summarization
Answer: A, D Question: 5
Which of these terms refers to call issues that cause variations in timing or time of arrival?

A. queuing
B. jitter
C. packet loss

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

D. digitized sampling
E. signal-to-noise ratio ratio
Answer: B Question: 6
Which two of these are characteristics of an IDS sensor? (Choose two.)

A. passively listens to network traffic
B. is an active device in the traffic path
C. has a permissive interface that is used to monitor networks
D. traffic arrives on one IDS interface and exits on another
E. has a promiscuous interface that is used to monitor the network
Answer: A, E Question: 7
In base e-Commerce module designs, where should firewall perimeters be placed?

A. core layer
B. Internet boundary
C. aggregation layer
D. aggregation and core layers
E. access and aggregation layers
Answer: A Question: 8
In which two locations in an enterprise network can an IPS sensor be placed? (Choose two.)

A. bridging VLANs on two switches
B. bridging two VLANs on one switch
C. between two Layer 2 devices with trunking
D. between two Layer 2 devices without trunking
E. between a Layer 2 device and a Layer 3 device with trunking
Answer: C, D Question: 9
What is a virtual firewall?

A. another name for a firewall deployed in routed mode
B. another name for a firewall deployed in transparent mode
C. a separation of multiple firewall security contexts on a single firewall
D. a firewall that, when deployed in routed mode, can support up to 1000 VLANs per context
E. a firewall that has multiple contexts, all of which share the same policies (such as NAT and
ACLs)
Answer: C Question: 10
In a VoWLAN deployment, what is the recommended separation between cells with the same channel?

A. 19 dBm

TK

Exam Name: Designing Cisco Network Service Architectures Exam
Exam Type: CISCO
Exam Code: 642-873 Total Questions: 65

B. 7 dBm
C. 10 dBm
D. 6 dBm
E. 5 dbm to 10 dBm
Answer: A Question: 11
Why is STP required when VLANs span access layer switches?

A. to ensure a loop-free topology
B. to protect against user-side loops
C. in order to support business applications
D. because of the risk of lost connectivity without STP
E. for the most deterministic and highly available network topology
Answer: B Question: 12
Which site-to-site VPN solution allows Cisco routers, PIX Firewalls, and Cisco hardware clients to act as remote VPN clients in order to receive predefined security policies and configuration
parameters from the VPN headend at the central site?

A. Easy VPN
B. GRE tunneling
C. Virtual Tunnel Interfaces
D. Dynamic Multipoint VPN
E. Group Encrypted Transport VPN
Answer: A Question: 13
Which two design concerns must be addressed when designing a multicast implementation?
(Choose two.)

A. only the low-order 23 bits of the MAC address are used to map IP addresses B. only the low-order 24 bits of the MAC address are used to map IP addresses C. only the high-order 23 bits of the MAC address are used to map IP addresses D. only the low-order 23 bits of the IP address are used to map MAC addresses
E. the 0×01004f MAC address prefix is used for mapping IP addresses to MAC addresses
F. the 0×01005e MAC address prefix is used for mapping IP addresses to MAC addresses
Answer: A, F Question: 14
Which two of these are recommended practices with trunks? (Choose two.)

A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

Answer: B, E

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Exam Number/Code: 642-873
Exam Name: Designing Cisco Network Service Architectures Exam

“Designing Cisco Network Service Architectures Exam”, also known as 642-873 exam, is a Cisco certification.
Preparing for the 642-873 exam? Searching 642-873 Test Questions, 642-873 Practice Exam, 642-873 Dumps?

With the complete collection of questions and answers, Pass4sure has assembled to take you through 65 Q&As to your 642-873 Exam preparation. In the 642-873 exam resources, you will cover every field and category in CCDP helping to ready you for your successful Cisco Certification.

Questions and Answers : 65 Q&As
Updated: April 25th , 2008
Market Price: $125.99
Member Price: $99.99

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Retired February 23, 2008
Exam Number: testking-642-871
Associated Certifications: CCDP
Duration: 90 minutes (55-65 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
ARCH is a qualifying exam for the Cisco Certified Design Professional CCDP? certification. The ARCH exam will test on material covered under the Designing Cisco Network Service Architectures (ARCH) course. The exam assesses a candidate’s understanding of latest developments in network design and technologies. The exam covers topics on network infrastructure, intelligent network services, and converged network solutions.

Exam Topics
The following information provides general guidelines for the content likely to be included on the ARCH exam. However, other related topics may also appear on any specific delivery of the exam.

Design & Modeling
Design networks that provide network services and solutions using the Cisco AVVID Framework
Design a modular network based on Enterprise Composite Network Model
Explain how the following concepts apply to each module of the Enterprise Composite Network Model:
performance and scalability; availability; manageability; security; and cost-effectiveness
Design modules and/or sub-modules of the Enterprise Composite Network Model to meet defined standards of: performance and scalability; availability; and manageability
Define an appropriate Enterprise Network Management Strategy to meet given requirements
Define a security strategy that is based on the requirement of each functional area of the Enterprise Composite Network Model
Identify the need for high availability from network design requirements
Design a network topology to support VoIP
Design a network topology to support IP Multicasting
Design a wireless LAN network solution that meets IEEE 802.11 standards
Identify the need for Virtual Private Networking (VPNs) from network design requirements
Design suitable storage networking solutions using Cisco AVVID principles

Relevant Technologies
Select appropriate components; features and protocols at the Campus Infrastructure, Server Farm, and Edge Distribution modules of a campus network design
Select appropriate components; features and protocols at the Network Management module of a campus network design
Compare and contrast the link characteristics, net protocols application demand characteristics and cost consideration that affect WAN design
Select suitable protocols, components and an appropriate topology for the Enterprise WAN
Select suitable protocols, components and an appropriate addressing scheme for the Internet Connectivity and eCommerce modules
Select the appropriate components and network model to address identified network security threats
Select the appropriate queuing types and protocols to provide QoS within a network design
Select the appropriate components and network model to support VoIP traffic
Select the appropriate options and features, on designated Cisco equipment, that are necessary to support IP Multicast
Describe the functionality required of designated network components, protocols, and addressing schemes to support IP Multicasting
Select the appropriate components and network technologies to support VPN

Application Solutions
Describe the functions of Cisco Works Network Management Solutions in a given network management module design
Position the Cisco Call Manager components in a variety of IP telephony deployment models
Select an appropriate content networking solution for a specific LAN/WAN design
Select a universal IP storage networking solution, given specific enterprise-wide storage and networking requirements

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Last day to test 12/31/06
*Approved for VA reimbursement

Exam Number: testking-642-811
Associated Certifications: CCNP, CCDP
Duration: 75-90 minutes (60-70 questions)
Available Languages: English, Japanese in Japan only
Click Here to Register: Pearson VUE or Prometric
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-811 BCMSN is a qualifying exam for the Cisco Certified Network Professional CCNP® as well as the Cisco Certified Design Professional CCDP® certifications. The 642-811 BCMSN exam will certify that the successful candidate has important knowledge and skills necessary to implement scalable multilayer switched networks. The exam includes topics on describing and implementing advanced Spanning Tree concepts, VLANs and Inter-VLAN routing, High Availability, multicasting and specific security features in switched networks.

Exam Topics
The following information provides general guidelines for the content likely to be included on this exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposed the guidelines below may change at any time without notice.

Describe and implement Spanning Tree operation in a hierarchical network
Describe and configure Spanning Tree, Rapid Spanning Tree, PVST+, PVRST, and MSTP
Describe and configure Spanning Tree enhancements
Configure link aggregation using PAgP or LACP
Identify a Spanning Tree topology and verify operation

Describe and implement VLANs
Describe best practices for VLAN implementation in the Enterprise Composite Model
Describe and configure VLANs including, Native, Static, and Voice (Aux)
Describe and configure VTP to distribute VLAN information
Implement a voice VLAN (i.e. trust boundary and Catalyst queuing)
Verify VLAN implementations

Describe and implement High Availability technologies and techniques
Describe Spanning Tree behavior in high availability environments
Implement 802.1s (MSTP) or PVRST for High Availability multi-layer switch environments
Describe and configure gateway redundancy protocols (e.g. HSRP and GLBP)
Verify High Availability configurations

Describe and implement InterVLAN routing
Describe and configure Inter-VLAN routing in a LAN environment
Describe the operation of CEF in a multi-layer switch environment
Describe and configure SVI and routed ports on Catalyst switches
Verify InterVLAN routing implementations

Describe and implement multicast forwarding
Describe and configure IP multicast routing in a LAN environment using PIM-SM/DM/Sparse-Dense Mode
Describe and verify IGMP and IGMP snooping on a Catalyst switch
Describe multicast IP addressing to include Layer-3 to Layer-2 mapping
Verify multicast operations

Describe and implement security features in a switched network
Describe and configure VACLs, PACLs, Private VLANs, Port Security, and 802.1x
Describe and configure AAA
Verify security implementations

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Last day to test 12/31/06
*Approved for VA reimbursement

Exam Number: testking 642-891
Associated Certifications: CCDP, CCNP
Duration: 120 minutes (80-90 questions)
Available Languages: English
Click Here to Register: Pearson VUE or Prometric
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Composite exam (642-891) is the quickest way for currently certified Cisco Certified Network Professionals (CCNP®) and Cisco Certified Design Professionals (CCDP®) to obtain recertification. The exam tests skills and knowledge pertaining to the Building Scalable Cisco Internetworks (BSCI) and Building Cisco Managed Switched Networks (BCMSN) courses. Composite may be taken to recertify CCNP and CCDP certifications; it may also be taken in place of the BSCI and BCMSN exams required for CCNP and CCDP certifications. Candidates must successfully pass both routing and switching subsections of the Composite exam to successfully pass the exam.

Exam Topics
The following information provides general guidelines for the content likely to be included on the Cisco Composite Exam. However, other related topics may also appear on any specific delivery of the exam.

Describe and implement advanced IP addressing technologies
Describe IPv6 addressing implementation
Design a hierarchical IPv4 addressing scheme using VLSM and route summarization

Describe and implement IP routing principles
Configure default routing on a Cisco router
Describe RIPv2 characteristics and operations
Configure and verify RIPv2 operations

Describe and implement Cisco IOS advanced routing features
Describe and configure route redistribution among different IP routing IGPs
Describe and configure route-maps
Describe and configure route filtering using distribute-lists
Configure passive interface to control routing updates
Configure policy-based routing to implement source-based routing

Describe and implement EIGRP
Describe DUAL and EIGRP operation, features, and benefits
Configure and verify EIGRP routing
Configure advanced EIGRP features for scalable networks

Describe and implement OSPF
Describe SPF calculation and OSPF operation, features, and benefits
Configure and verify OSPF routing
Configure and verify OSPF area parameters including STUB, NSSA, Totally Stubby, Backbone, and virtual links

Describe and implement integrated IS-IS
Describe the foundational concepts, features, and benefits of integrated IS-IS operation
Describe and configure NET addressing
Configure and verify multi-area integrated IS-IS

Describe and implement BGP for enterprise ISP connectivity
Describe the foundational concepts of eBGP and iBGP
Configure and verify BGP operation
Manipulate BGP path selection using Local Preference and MED attributes

Describe and implement Spanning Tree operation in a hierarchical network
Describe and configure Spanning Tree, Rapid Spanning Tree, PVST+, PVRST, and MSTP
Describe and configure Spanning Tree enhancements
Configure link aggregation using PAgP or LACP
Identify a Spanning Tree topology and verify operation

Describe and implement VLANs
Describe best practices for VLAN implementation in the Enterprise Composite Model
Describe and configure VLANs including, Native, Static, and Voice (Aux)
Describe and configure VTP to distribute VLAN information
Implement a voice VLAN (i.e. trust boundary and Catalyst queuing)
Verify VLAN implementations

Describe and implement High Availability technologies and techniques
Describe Spanning Tree behavior in high availability environments
Implement 802.1s (MSTP) or PVRST for High Availability multi-layer switch environments
Describe and configure gateway redundancy protocols (e.g. HSRP and GLBP)
Verify High Availability configurations

Describe and implement InterVLAN routing
Describe and configure Inter-VLAN routing in a LAN environment
Describe the operation of CEF in a multi-layer switch environment
Describe and configure SVI and routed ports on Catalyst switches
Verify InterVLAN routing implementations

Describe and implement multicast forwarding
Describe and configure IP multicast routing in a LAN environment using PIM-SM/DM/Sparse-Dense Mode
Describe and verify IGMP and IGMP snooping on a Catalyst switch
Describe multicast IP addressing to include Layer-3 to Layer-2 mapping
Verify multicast operations

Describe and implement security features in a switched network
Describe and configure VACLs, PACLs, Private VLANs, Port Security, and 802.1x.
Describe and configure AAA
Verify security implementations

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Exam Number: testking 642-892
Associated Certifications: CCNP, CCDP
Duration: 120 minutes
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The Composite exam (642-892) is the quickest way for currently certified Cisco Certified Network Professionals (CCNP®) and Cisco Certified Design Professionals (CCDP®) to obtain recertification. The exam tests skills and knowledge pertaining to the Building Scalable Cisco Internetworks (BSCI) and Building Cisco Managed Switched Networks (BCMSN) courses. Composite may be taken to recertify CCNP and CCDP certifications; it may also be taken in place of the BSCI and BCMSN exams required for CCNP and CCDP certifications. Candidates must successfully pass both routing and switching subsections of the Composite exam to successfully pass the exam.

Exam Topics
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes the guidelines below may change at any time without notice.

Implement EIGRP operations
Explain the functions and operations of EIGRP (e.g., DUAL)
Configure EIGRP routing. (e.g., Stub Routing, authentication, etc.)
Verify or troubleshoot EIGRP routing configurations
Implement multi-area OSPF operations
Explain the functions and operations of multiarea OSPF
Configure multiarea OSPF routing. (e.g., Stub, NSSA, authentication, etc.)
Verify or troubleshoot multiarea OSPF routing configurations
Describe integrated IS-IS
Describe the features and benefits of integrated IS-IS
Configure and verify integrated IS-IS
Implement Cisco IOS routing features
Describe, configure or verify route redistribution between IP routing IGPs. (e.g., route-maps, default routes, etc.)
Describe, configure or verify route filtering (i.e., distribute-lists and passive interfaces)
Describe and configure DHCP services (e.g., Server, Client, IP helper address, etc.)
Implement BGP for enterprise ISP connectivity
Describe the functions and operations of BGP
Configure or verify BGP operation in a non-transit AS (e.g., authentication)
Configure BGP path selection. (i.e., Local Preference, AS Path, Weight or MED attributes)
Implement multicast forwarding
Describe IP Multicast (e.g., Layer-3 to Layer-2 mapping, IGMP, etc.)
Describe, configure, or verify IP multicast routing (i.e., PIM Sparse-Dense Mode)
Implement IPv6
Describe IPv6 addressing operations
Describe IPv6 interoperation with IPv4
Describe, configure or verify OSPF routing with IPv6 addressing
Implement VLANs
Explain the functions of VLANs in a hierarchical network
Configure VLANs (e.g., Native, Default, Static and Access)
Explain and configure VLAN trunking (i.e., IEEE 802.1Q and ISL)
Explain and configure VTP
Verify or troubleshoot VLAN configurations
Conduct the operation of Spanning Tree protocols in a hierarchical network
Explain the functions and operations of the Spanning Tree protocols (i.e., RSTP, PVRST, MISTP)
Configure RSTP (PVRST) and MISTP
” Describe and configure STP security mechanisms (i.e., BPDU Guard, BPDU Filtering, Root Guard)
Configure and Verify UDLD and Loop Guard
Verify or troubleshoot Spanning Tree protocol operations
Configure and verify link aggregation using PAgP or LACP
Implement Inter-VLAN routing
Explain and configure Inter-VLAN routing (i.e., SVI and routed ports)
Explain and enable CEF operation
Verify or troubleshoot InterVLAN routing configurations
Implement gateway redundancy technologies
Explain the functions and operations of gateway redundancy protocols (i.e., HSRP, VRRP, and GLBP)
Configure HSRP, VRRP, and GLBP
Verify High Availability configurations
Describe and configure wireless client access
Describe the components and operations of WLAN topologies (i.e., AP and Bridge)
Describe the features of Client Devices, Network Unification, and Mobility Platforms (i.e., CCX, LWAPP)
Configure a wireless client (i.e., ADU)
Describe and configure security features in a switched network
Describe common Layer 2 network attacks (e.g., MAC Flooding, Rogue Devices, VLAN Hopping, DHCP Spoofing, etc.)
Explain and configure Port Security,802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI
Verify Catalyst switch (IOS-based) security configurations (i.e., Port Security, 802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI)
Configure support for voice
Describe the characteristics of voice in the campus network
Describe the functions of Voice VLANs and trust boundaries
Configure and verify basic IP Phone support (i.e. Voice VLAN, Trust and CoS options, AutoQoS for voice)

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Exam Number: testking 642-873
Associated Certifications: CCDP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
Click Here to Register: Pearson VUE
Exam Policies: Read current policies and requirements
Exam Tutorial: Review type of exam questions

Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-873 ARCH Designing Cisco Network Service Architectures Exam is the exam associated with the CCDP certification. This exam tests a candidate’s knowledge of the latest development in network design and technologies, including network infrastructure, intelligent network services and converged network solutions. Candidates can prepare for this exam by taking the ARCH Designing Cisco Network Service Architectures course.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Design advanced core enterprise networks
Design campus Infrastructure using best practices
Design a High Availability enterprise network
Design a high availability WAN
Design network management services
Design IP multicast services
Describe enterprise VoWLAN design considerations

Design an enterprise data center
Design a high availability data center network that is modular, flexible and meets standards
Describe the components and technologies of a SAN network
Design an effective E-Commerce module

Design security services
Utilize firewalls
Utilize the NAC appliance
Utilize IPsec VPNs

Free 642-873 Exams’s PDF Download
Free Testking offers free demo for 642-873 PDF(Designing Cisco Network Service Architectures Exam). You can check out the interface, question quality and usability of our practice exams . We are the only one site can offer demo for almost all Designing Cisco Network Service Architectures Exam.

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