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Q1. What is defined by using the Cisco IOS XR policy-global configuration command?
A. the default BGP route policy
B. global variables that can be referenced by any route policy
C. the global default route policy
D. hierarchical route policy
E. nested route policy
Answer: B
Explanation:
Global Configuration Mode Prompt: (config) Enter global configuration mode from executive (EXEC) mode by using the configure command. Global configuration commands generally apply to the whole system rather than just one protocol or interface. You can enter all other configuration submodes listed in this section from global configuration mode. RP/0/RP0/CPU0:router# configure RP/0/RP0/CPU0:router(config)# Global Parameter Configuration Mode Prompt: (config-rpl-gl)
Enter global parameter configuration mode by using the policy-global command in global configuration mode.
In global parameter configuration mode, you can create or modify a global policy by entering successive commands and then terminating the configuration by entering the end-global command.
For example, to configure global parameters: RP/0/RP0/CPU0:router(config)# policy-global RP/0/RP0/CPU0:router(config-rp-gl)# glbpathtype ebgp RP/0/RP0/CPU0:router(config-rp-gl)# glbtag 100 RP/0/RP0/CPU0:router(config-rp-gl)# end-global
Q2. Which two mandatory tasks must an IS-IS NSF-capable router perform for RP switchover? (Choose two.)
A. Relearn the available IS-IS neighbors.
B. Reacquire the contents of the LSD.
C. Reset peering with the available IS-IS neighbors.
D. Keep the existing contents of the LSD.
E. Rediscover DIS for each link segment.
Answer: A,B
Q3. Which RPLs can be used to conditionally advertise a default route based on the prefix
1.1.1.1 being in the routing table?
A. route-policy RPL_Default_Originate if rib-has-route in (1.1.1.1/32) pass else drop endif end-policy
B. route-policy RPL_Default_Originate if rib-has-route in (1.1.1.1/32) drop else pass endif end-policy
C. route-policy RPL_Default_Originate if route in (1.1.1.1/32) pass else drop endif end-policy
D. route-policy RPL_Default_Originate if not rib-has-route in (1.1.1.1/32) pass else drop endif end-policy
Answer: A
Q4. Nonstop Forwarding works with the Stateful Switchover feature in Cisco IOS and IOS XR software. Which three restrictions for OSPF are true? (Choose three.)
A. OSPF NSF for virtual links is not supported.
B. OSPF NSF for virtual links is supported.
C. OSPF NSF for sham links is not supported.
D. OSPF NSF for sham links is supported.
E. OSPF NSF supports NSF/SSO for IPv6 traffic only.
F. OSPF NSF supports NSF/SSO for IPv4 traffic only.
Answer: A,C,F
Q5. A Cisco IOS XR router must be configured with BFD for OSPF. Which configuration is correct?
A. interface GigabitEthernet0/0/0/0 ip ospf bfd
B. router ospf 1 area 0 interface GigabitEthernet0/0/0/0 bfd fast-detect
C. router ospf 1 area 0 interface GigabitEthernet0/0/0/0 bfd fast-detect ipv4
D. router ospf 1 bfd all-interfaces
Answer: B
Q6. Which statement best describes the function of a BGP af-group?
A. Use templates in different neighbors so it makes the BGP implementation easier.
B. Group different address family neighbors inside BGP.
C. Create a group of neighbors that can inherit address family configuration inside BGP.
D. Substitute the class maps inside BGP on Cisco IOS XR devices.
Answer: B
Q7. When configuring IPv4 and IPv6 IS-IS routing on Cisco IOS XR routers, which three statements are correct? (Choose three.)
A. By default, a single SPF is used for both IPv4 and IPv6, so the IPv4 and IPv6 topology should be the same.
B. By default, the IS-IS router type is Level 1 and Level 2.
C. All IS-IS routers within the same IS-IS area must be configured with the same IS-IS routing process instance ID.
D. By default, metric-style narrow is used.
E. By default, the IS-IS interface circuit type is Level 1 and Level 2.
F. The area IS-IS address-family configuration command is used to specify the IS-IS area address.
Answer: B,D,E
Explanation:
C:Documents and Settingsuser-nwzDesktop1.JPG
The default metric style for single topology is narrow metrics. However, you can use either wide metrics or narrow metrics. How to configure them depends upon how single-topology is configured. If both IPv4 and IPv6 are enabled and single-topology is configured, the metric style is configured in the address-family ipv4 stanza. You may configure the metric style in the address-family ipv6 stanza, but it will be ignored in this case. If IPv6 only is enabled and single topology is configured, then the metric style is configured in the address-family ipv6 stanza.
C:Documents and Settingsuser-nwzDesktop1.JPG
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. Which statement is correct regarding the DR election process In this OSPF implementation?
A. Both the CE5 and PE6 routers are DROTHERs
B. PE5 is the OSPFv2 DR for the GigabitEthernet link between PE5 and PE6
C. PE6 is the OSPFv2 and OSPFv3 DR for the GigabitEthernet link between PE5 and PE6
D. PE6 is the DR for the GigabitEthernet link between PE5 and PE6 because it has a higher OSPF priority
Answer: A
Explanation: # show ip ospf neighbor # show ipv6 ospf neighbor