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Q1. What is function of the RP/0/RSP0/CPU0:PE1(config-ospf)#distance Cisco IOS-XR command?
A. To modify the administrative distance of the OSPF routes
B. To modify the default seed metric of the OSPF external routes
C. To modify the OSPF default reference bandwidth
D. To modify the OSPF cost
Answer: A
Explanation:
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/routing/command/reference/rr38osp f.pdf
C:Documents and Settingsuser-nwzDesktop1.JPG
Q2. A network engineer wants to set the local preference to 100 for the specific BGP community sets of 100:1, 101:1, and 102:1..Which option can the engineer use to implement this through RPL, where the BGP community set list is made by the name of lowpri-communities?
A. route-policy ch-pref if community matches lowpri-communities then set local-preference 100 endif end-policy
B. route-policy ch-pref if community eq lowpri-communities.then set local-preference 100 endif end-policy
C. route-policy ch-pref if community matches-any lowpri-communities.then set local-preference 100 endif end-policy
D. route-policy ch-pref if community neq lowpri-communities.then set local-preference 100 endif end-policy
Answer: C
Q3. An engineer is using configuration blocks to build policy-based routing. All other traffic must not be affected and the policy must be applied to GigabitEthernet1/0. Which block correctly implements traffic that is destined for 10.10.10.0/24 using a next hop of 192.168.55.1?
A. access-list 110 permit ip any 10.10.10.0 0.0.0.255 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 interface GigabitEthernet1/0 ip policy route-map PBR
B. access-list 110 permit ip any 10.10.10.0 0.0.0.255 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 route-map PBR permit 20 interface GigabitEthernet1/0 ip policy route-map PBR
C. access-list 110 permit ip any 10.10.10.0 255.255.255.0 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 interface GigabitEthernet1/0 ip policy route-map PBR
D. access-list 110 permit ip any 10.10.10.0 255.255.255.0 route-map PBR permit 10 match ip address 110 set next-hop 192.168.55.1 route-map PBR permit 20 interface GigabitEthernet1/0 ip policy route-map PBR
Answer: B
Q4. Which reserved AS number or range of numbers is used for backward compatibility between old BGP peers using 16-bit AS number and new BGP peers using 32-bit AS number?
A. AS 65001 to 65535
B. AS 65512 to 65535
C. AS 12345
D. AS 23456
E. AS 64001
Answer: D
Explanation:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6554/ps6599/4byte_asnios. pdf New Reserved AS# AS_TRANS = AS #23456 2-byte placeholder for a 4-byte AS number Used for backward compatibility between OLD and NEW BGP speakers
Q5. Which two of the following are true regarding the BGP Prefix-Based outbound route filtering feature? (Choose two.)
A. IP multicast routes are not supported.
B. Outbound route filtering is configured only on a per-address family basis.
C. Outbound route filtering can be configured for either iBGP or eBGP sessions.
D. The outbound route filter can be defined in a Prefix list, Distribute list or Access lists.
E. Outbound route filtering is more effective when a distance vector IGP is used.
Answer: A,B
Explanation:
http://www.cisco.com/en/US/docs/ios/12_2s/feature/guide/fsbgporf.pdf
Restrictions for BGP Prefix-Based Outbound Route Filtering
. The BGP Prefix-Based Outbound Route Filtering feature does not support IP multicast routes.
. IP addresses that are used for outbound route filtering must be defined in an IP prefix-list. BGP distribute lists and IP access lists are not supported.
. Outbound route filtering is configured on only a per-address family basis and cannot be configured under the general session or BGP routing process (Router(config-router)#).
. Outbound route filtering is configured for only external peering sessions.
Q6. Refer to the exhibit.
Which configuration on XR2 provides R1 with only the minimum routing information to reach the rest of the network?
A. Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-2-only
B. Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1-2
C. Router isis ABC interface GigabitEthernet0/0/0/1 circuit-type level-1
D. Router isis ABC interface GigabitEthernet0/0/0/0 circuit-type level-1
Answer: D
Q7. Which three valid session commands are supported by peer session templates? (Choose three.)
A. local-as
B. as-override
C. inherit peer-session
D. inherit peer-policy
E. disable-connected-check
F. route-reflector-client
Answer: A,C,E
Q8. Refer to the exhibit.
IS-IS adjacency is not established between XR2 and R1. Which action fixes this issue?
A. unify IS-IS process IDs on each router
B. configure on R1 under IS-IS is-type level-1-2
C. configure on R1 under IS-IS area-password CISCO
D. configure on XR2 under IS-IS under Gi0/0/0/0 address-family ipv4 unicast
Answer: D
Q9. RAG DROP
Answer:
Q10. Refer to the exhibit.
R2 does not have R1 1.1.1.1/32 subnet in its BGP table. Which issue can be causing this problem?
A. XR4 does not have next-hop-self.for a R2 iBGP session.
B. R2 does not have no auto-summary.configured.
C. XR4 drops any update coming from R1.
D. IPv4 address-family is not enabled on R1.
Answer: C