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Deploying Cisco Service Provider Advanced Network Routing

Question No: 21

A network architect is responsible for the company#39;s multicast network domain design. Which multicast component acts as a meeting place for sources and receivers?

  1. multicast shared tree

  2. multicast distribution point

  3. multicast rendezvous point

  4. multicast source tree

Answer: C

Question No: 22

A network engineer for an ISP wants to reduce the number of iBGP adjacencies. A merge is taking place with another ISP network, so the network engineer needs to make both ASNs look like a single network for the Internet. Which BGP technology is most suitable?

  1. route reflector

  2. confederation

  3. clustering

  4. peer group

Answer: B

Question No: 23 DRAG DROP

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Answer:

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Question No: 24

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Which three statements regarding the BGP operations are correct? (Choose three)

  1. PE5 will set the local preferences 200 on all the prefixes sent to CE5

  2. PE5 will set the local preference to 200 on all the prefixes learned from CE5

  3. CE5 has received 5 prefixes from the PE5 EBGP peer

  4. CE5 has the BGP scan interval set to 30 seconds

  5. CE5 is announcing the 192.168.55.0/24 prefix via EBGP to the PE5 EBGP peer

F. The AS-Path to reach the 209.165.202.128/27 prefix from CE5 is: 64500 64497 64498

Answer: C,E,F

Explanation: #sh ip bgp | be Network

#sh ip bgp

#show ip bgp neighbors

Question No: 25

In secure multicast, which protocol is used to distribute secure keys to a multicast group?

  1. ISAKMP

  2. RSA

  3. IPsec

  4. GDOI

  5. SKIP

Answer: D

Question No: 26

Refer to the exhibit.

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Which option is the function of designing a hub and spoke confederation?

  1. allows transit backbone area 66000 to be a blackhole for non-transit ASs

  2. reduces the iBGP mesh, iBGP mesh will be in sub non-transit ASs

  3. increases eBGP sessions between the confederation sub ASs

  4. allows transit backbone area and non-transit ASs to run the same IGP

Answer: B

Question No: 27

Refer to the exhibit.

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Which configuration ensures that RR2 does not send the same updates to PE2 that RR1 learns via PE1?

  1. RR1 and RR2 should have different router IDs.

  2. RR1 and RR2 should have different originator IDs.

  3. RR1 and RR2 should have the same router IDs.

  4. RR1 and RR2 should have the same cluster IDs.

Answer: D

Question No: 28

With IPv6 multicast, which feature can be used as a replacement method for static RP configuration?

  1. PIM Snooping

  2. MLD

  3. MLD Snooping

  4. Embedded RP

  5. DHCPv6

Answer: D

Question No: 29

On Cisco IOS-XR, which BGP configuration group allows you to define address-family independent commands and address-family dependent commands for each address family?

  1. neighbor-group

  2. session-group

  3. af-group

  4. peer-group

Answer: A Explanation:

鈥ommands relating to a peer group found in Cisco IOS Release 12.2 have been removed from Cisco IOS XR software. Instead, the af-group, session-group, and neighbor-group configuration commands are added to support the neighbor in Cisco IOS XR software:

-The af-group command is used to group address family-specific neighbor commands within an IPv4 or IPv6 address family. Neighbors that have the same address family configuration are able to use the address family group name for their address family- specific configuration. A neighbor inherits the configuration from an address family group by way of the use command. If a neighbor is configured to use an address family group, the neighbor will (by default) inherit the entire configuration from the address family group.

However, a neighbor will not inherit all ofthe configuration from the address family group if items are explicitly configured for the neighbor.

-The session-group command allows you to create a session group from which neighbors can inherit address family-independent configuration. A neighbor inherits the configuration from a session group by way of the use command. If a neighbor is configured to use a session group, the neighbor (by default) inherits the session group#39;s entire configuration. A

neighbor does not inherit all the configuration from a session group if a configuration is done directly on that neighbor.

-The neighbor-group command helps you apply the same configuration to one or more neighbors. Neighbor groups can include session groups and address family groups. This additional flexibility can create a complete configuration for a neighbor. Once a neighbor group is configured, each neighbor can inherit the configuration through the use command. If a neighbor is configured to use a neighbor group, the neighbor (by default) inherits the neighbor group#39;s entire BGP configuration.

-However, a neighbor will not inherit all of the configuration from the neighbor group if items are explicitly configured for the neighbor. In addition, some part of the neighbor group#39;s configuration could be hidden if a session group or address family group was also being used

Question No: 30

Refer to the Cisco IOS DHCPv6 configuration shown in the exhibit.

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Which statement is correct?

  1. The configuration is missing a command under interface Gi0/1 to indicate to the attached hosts to use stateful DHCPv6 to obtain their IPv6 addresses

  2. The IPv6 router advertisements indicate to the attached hosts on the Gi0/1 interface to get other information besides their IPv6 address via stateless auto configuration

  3. The IPv6 DHCPv6 server pool configuration is misconfigured

  4. The DNS server address can also be imported from another upstream DHCPv6 server

Answer: A Explanation: Server Configuration

In Global Configuration Mode ipv6 unciast-routing

ipv6 dhcp pool lt;pool namegt;

address prefix lt;specify address prefixgt; lifetime lt;infinitegt; lt;infinitegt; dns-server lt;specify the dns server addressgt;

domain-name lt;specify the domain namegt; exit

In Interface Configuration Mode

ipv6 address lt;specify IPv6 Addressgt;

ipv6 dhcp server lt;server namegt;rapid-commit Client Configuration

In Global Configuration Mode enable

configure terminal ipv6 unicast-routing

In Interface Configuration Mode ipv6 address dhcp rapid commit ipv6 enable

exit

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