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Q1. An engineer wants to define a route policy that sets MED to a given value in case the extended community attributes of a network prefix match at least one of the values: 65000:10, 65000:20, or 65000:30. Which configuration accomplishes this task?
A. extcommunity-set rt my-list 65000:10 65000:20 65000:30 end-set
route-policy my-list ($med) if extcommunity rt matches-within my-list then set met $med
B. extcommunity-set rt my-list 65000:10 65000:20 65000:30 end-set
route-policy my-list ($med) if extcommunity rt matches-any my-list then set met $med
C. extcommunity-set rt my-list 65000:10 65000:20 65000:30 end-set
route-policy my-list ($med) if extcommunity rt matches-within my-list.or med is $med is then set met $med
D. extcommunity-set rt my-list 65000:10 65000:20 65000:30 end-set
route-policy my-list ($med) if extcommunity rt matches-any my-list or med is $med then pass
Answer: B
Q2. An engineer is working on routers within AS 100. Which regular expression can be used in an AS path access list to match locally originated routes from AS 100?
A. ^100$
B. ^$
C. _100$
D. ^[0-9]*$
Answer: B
Q3. Which router(s) is/are IS-Type L1/L2 IS-IS router?
A. CE5 only
B. PE6 only
C. CE5 and PE6 only
D. PE5 and PE6 only
E. CE5, PE5 and PE6
Answer: D
Explanation:
#show clns neighbor
Q4. Refer to the topology diagram in the exhibit.
Which IS-IS feature could be implemented so that the return path for the packets from router Y in area 49.00AA to router X in area 49.00BB will use the more optimal path?
A. Enable route leaking to pass Level 2 information into the Level 1 routers.
B. Change the area 49.00AA type from a stub area to a regular area.
C. Change the IS-IS administrative distance on router Y in area 49.00AA.
D. Change the IS-IS metric type from narrow to wide on all IS-IS routers.
Answer: A
Explanation:
http://www.cisco.com/application/pdf/paws/13796/route-leak.pdf
The ISIS routing protocol allows for a twolevel hierarchy of routing information. There can be multiple Level 1 areas interconnected by a contiguous Level 2 backbone. A router can belong to Level 1, Level 2, or both. The Level 1 linkstate database contains information about that area only. The Level 2 linkstate database contains information about that level as well as each of the Level 1 areas. An L1/L2 router contains both Level 1 and Level 2 databases. It advertises information about the L1 area to which it belongs into L2. Each L1 area is essentially a stub area. Packets destined for an address that is outside of the L1 area are routed to the closest L1/L2 router to be forwarded on to the destination area. Routing to the closest L1/L2 router can lead to suboptimal routing when the shortest path to the destination is through a different L1/L2 router.
Route leaking helps reduce suboptimal routing by providing a mechanism for leaking, or redistributing, L2 information into L1 areas. By having more detail about inter area routes, an L1 router is able to make a better choice with regard to which L1/L2 router to forward the packet.
Q5. In Cisco IOS and Cisco IOS XE Software images, when redistributing routes from other routing protocols into OSPF, what is a common reason why some of the routes might not be redistributed into OSPF?
A. The OSPF external metric type (E1 or E2) is not defined.
B. The OSPF seed metric is not defined.
C. The OSPF level (Level 1, Level 2, or Level-1-2) to which the routes will be redistributed into is not defined.
D. The subnets option in the redistribute command is missing.
Answer: D
Q6. In comparing IS-IS with OSPF, a Level-1-2 IS-IS router is similar to which kind of OSPF router?
A. ASBR on a normal OSPF area
B. ASBR on NSSA
C. ABR on totally stubby OSPF area
D. ABR on stubby OSPF area
E. ABR on a normal OSPF area
Answer: C
Q7. Refer to the network diagram in the exhibit.
If both ASBRs are advertising the external Destination X network as OSPF E2 route, what is the best path for the R1 router to reach Network X?
A. R1 will use the path via ASBR 2 as the best path.
B. R1 will use the path via ASBR 1 as the best path.
C. R1 will load balance between two equal cost paths via ASBR 1 and ASBR 2.
D. R1 will sees two equal costs and will choose the path through the ASBR with the lower OSPF router ID.
Answer: B
Q8. Refer to the Cisco IOS XE IS-IS configuration exhibit.
What are two problems with the configuration that are causing the IPv4, or the IPv6, or the IPv4 and IPv6 IS-IS operations to fail? (Choose two.)
A. The configuration is missing the interface gi0/0 and interface gi0/0 commands under router isis 1.
B. The configuration is missing the address-family ipv4 unicast and address-family ipv6 unicast commands under router isis 1.
C. IPv6 unicast routing has not been enabled globally on the Cisco IOS XE router.
D. The gi0/0 and gi0/1 interfaces are not participating in the router isis 1 routing instance.
E. Multitopology IS-IS must be enabled to support both IPv4 and IPv6.
F. Another router isis instance must be enabled to support IPv6.
Answer: C,D
Explanation:
http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_50_se/co nfiguration/guide/swipv6.pdf
. When using user-network interface (UNI) or enhanced network interface (ENI) ports for any IPv6-related features, you must first globally enable IP routing and IPv6 routing on the switch by entering the ip routing ipv6 unicast-routing
Q9. When using the show bgp ipv6 unicast summary command to verify the IPv6 BGP session status with the IPv6 BGP peers, you noticed the "St/PfxRcd" status for one of the IPv6 BGP peers is in the "Active" state. What does the "Active" state indicate?
A. The IPv6 BGP session has been established with the IPv6 BGP peer.
B. The router is in the process of sending BGP routing updates to the IPv6 BGP peer.
C. The router is in the process of establishing the IPv6 BGP session with the IPv6 BGP peer.
D. The router is exchanging BGP notification messages with its IPv6 BGP peer.
Answer: C
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