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2018 Jan Cisco Official New Released 642-885
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Deploying Cisco Service Provider Advanced Network Routing

Question No: 31

Referring to the topology diagram show in the exhibit,

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which three statements are correct regarding the BGP routing updates? (Choose three.)

  1. The EBGP routing updates received by R1 from R5 will be propagated to the R2, R4, and R7 routers

  2. The EBGP routing updates received by R3 from R6 will be propagated to the R2 and R4 routers

  3. The EBGP routing updates received by R1 from R5 will be propagated to the R2 and R4 routers

  4. The IBGP routing updates received by R3 from R2 will be propagated to the R6 router

  5. The IBGP routing updates received by R2 from R1 will be propagated to the R3 router

  6. The IBGP routing updates received by R1 from R4 will be propagated to the R5, R7, and R2 routers

Answer: A,B,D

Question No: 32

R1 is designated as the PIM RP within the SP core. Which two configuration parameters must be used to enable and activate R1 as the BSR and RP for the core environment? (Choose two.)

  1. ip pim send-rp-announce loopback0 scope 16

  2. ip pim bsr-candidate loopback0

  3. ip pim send-rp-discovery loopback0 scope 16

  4. ip pim rp-candidate loopback0

  5. ip pim send-RP-announce loopback0 scope 16 group-list 1

Answer: B,D

Question No: 33

Which technology is categorized as multicast ASM and multicast SSM?

  1. IP telephony

  2. video conferencing

  3. IPTV

  4. live streaming

Answer: D

Question No: 34

Which multicast implementation is preferred for traffic that is required by a small number of receivers across a large distributed network?

  1. DVMRP

  2. PIM-DM

  3. PIM-SM

  4. IGMP

Answer: C

Question No: 35

Which command set implements BGP support for NSF/SSO on Cisco IOS XE between a PE and a route reflector?

  1. On RR: router bgp 300

    no synchronization

    bgp log-neighbor-changes

    bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart

    neighbor 10.20.20.2 remote-as 200

    neighbor 10.20.20.2 update-source Loopback0 no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.2 activate

    neighbor 10.20.20.2 send-community both neighbor 10.20.20.2 route-reflector-client exit-address-family

    On PE:

    router bgp 300

    no synchronization

    bgp log-neighbor-changes

    bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart

    neighbor 10.20.20.1 remote-as 300

    neighbor 10.20.20.1 update-source Loopback0 no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.1 activate

    neighbor 10.20.20.1 send-community both exit-address-family

    !

  2. On RR: router bgp 300

    no synchronization

    bgp log-neighbor-changes

    bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart

    neighbor 10.20.20.2 remote-as 200

    neighbor 10.20.20.2 update-source Loopback0 no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.2 activate

    neighbor 10.20.20.2 send-community both neighbor 10.20.20.2 route-reflector-client exit-address-family

    On PE:

    router bgp 300

    no synchronization

    bgp log-neighbor-changes neighbor 10.20.02.1 remote-as 300

    neighbor 10.20.20.1 update-source Loopback0 no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.1 activate

    neighbor 10.20.20.1 send-community both exit-address-family

    !

  3. On RR: router bgp 300

    no synchronization

    bgp log-neighbor-changes

    bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart

    neighbor 10.20.20.2 remote-as 200

    neighbor 10.20.20.2 update-source Loopback0 no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.2 activate

    neighbor 10.20.20.2 send-community both neighbor 10.20.20.2 route-reflector-client exit-address-family

    On PE:

    router bgp 300

    no synchronization

    bgp log-neighbor-changes neighbor 10.20.20.1 remote-as 300

    neighbor 10.20.20.1 update-source Loopback0 neighbor 10.20.20.1 ha-mode sso

    no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.1 activate

    neighbor 10.20.20.1 send-community both exit-address-family

    !

  4. On RR: router bgp 300

    no synchronization

    bgp log-neighbor-changes neighbor 10.20.20.2 remote-as 200

    neighbor 10.20.20.2 update-source Loopback0 neighbor 10.20.20.2 ha-mode sso

    no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.2 activate

    neighbor 10.20.20.2 send-community both neighbor 10.20.20.2 route-reflector-client exit-address-family

    On PE:

    router bgp 300

    no synchronization

    bgp log-neighbor-changes neighbor 10.20.20.1 remote-as 300

    neighbor 10.20.20.1 update-source Loopback0 neighbor 10.20.20.1 ha-mode sso

    no auto-summary

    !

    address-family vpnv4 neighbor 10.20.20.1 activate

    neighbor 10.20.20.1 send-community both exit-address-family

    !

  5. On RR: router bgp 300

no synchronization

bgp log-neighbor-changes neighbor 10.20.20.2 remote-as 200

neighbor 10.20.20.2 update-source Loopback0 no auto-summary

!

address-family vpnv4 neighbor 10.20.20.2 activate

neighbor 10.20.20.2 send-community both neighbor 10.20.20.2 route-reflector-client exit-address-family

On PE:

router bgp 300

no synchronization

bgp log-neighbor-changes

bgp graceful-restart restart-time 120 bgp graceful-restart stalepath-time 360 bgp graceful-restart

neighbor 10.20.20.1 remote-as 300

neighbor 10.20.20.1 update-source Loopback0 no auto-summary

!

address-family vpnv4 neighbor 10.20.20.1 activate

neighbor 10.20.20.1 send-community both exit-address-family

!

Answer: A

Question No: 36

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On the PE5 router, which statementis correct regarding the learned BGP prefixes?

  1. The 209.165.201.0/27 prefix is received from the 10.0.1.1 IBGP peer which is a route reflector

  2. The 172.16.66.0/24 prefix BGP next-hop points to the route reflector

  3. All prefixes learned on PE5 has the default local preference value

  4. The 209.165.202.128/27 prefix is originated by the 10.0.1.1 IBGP peer

Answer: C

Explanation: #show ip bgp – check i tag for PE5

Question No: 37

A CRS router that runs Cisco IOS XR has dual routing processors installed. Which solution should be implemented to prevent OSPF adjacency flapping if the primary routing processor fails?

  1. NSR

  2. OSPF Fast Timers

  3. OSPF RE Sync

  4. router msdp

  5. NSF

Answer: A

Question No: 38

Which informationdoes the multicast supported router need to forward the multicast traffic over the source or shared tree?

  1. source address

  2. multicast address

  3. destination address

  4. mGRE headers

  5. MDT Data

Answer: C

Question No: 39

In Cisco IOS-XR, the maximum-prefix command, to control the number of prefixes that can be installed from a BGP neighbor, is configured under which configuration mode?

  1. RP/0/RSP0/CPU0:P2(config-bgp)#

  2. RP/0/RSP0/CPU0:P2(config-bgp-af)#

  3. RP/0/RSP0/CPU0:P2(config-bgp-nbr)#

  4. RP/0/RSP0/CPU0:P2(config-bgp-nbr-af)#

Answer: D Explanation:

http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00801 0a28a.shtml

Question No: 40

Which command set is used to implement an IPv6 PIM with the global scope embedded RP address of 2001:DB8::1 on a Cisco IOS XE router?

  1. ipv6 unicast-routing ipv6 multicast-routing

    ipv6 pim rp-address 2001:DB8::1 bidir

  2. ipv6 multicast-routing

    ipv6 pim rp-address 2001:DB8::1

  3. ipv6 unicast-routing ipv6 multicast-routing

    ipv6 pim rp-address FF7E:0120:2001:DB8:1111::4321

  4. ipv6 unicast-routing ipv6 multicast-routing int Lo0

    ipv6 mld join-group FF7E:0120:2001:DB8:1111::4321

  5. ipv6 unicast-routing ipv6 multicast-routing int Lo0

ipv6 mld join-group FF75:0120:2001:DB8:1111::4321

Answer: D

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