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Q1. Layer 2 VPN services that are offered by traditional service providers using a SONET/SDH backbone can be implemented by service providers using an IP/MPLS backbone with which MPLS feature?

A. LSP stitching

B. AToM

C. virtual private WAN services

D. cell-mode MPLS

Answer: B

Q2. Which three statements are correct regarding ping mpls command operations? (Choose three.)

A. MPLS OAM has to be enabled on the router using the mpls oam command.

B. They use a 127/8 address as the destination address in the MPLS echo request packet.

C. They use ICMP echo request and ICMP echo reply packets.

D. They are used to test for a broken LSP.

E. If there is a broken LSP, instead of using label switching, the packet can still be forwarded based on the destination IP address in the mpls ping echo request packet.

Answer: ABD

Q3. Refer to the partial Cisco IOS XR configurations exhibit for Router 1 and Router 2.

There are two routers that are connected back to back over the Gigabit Ethernet link. If the "show mpls ldp neighbor" command output on Router 1 does not show LDP peering with Router 2, what could be the possible root cause of the LDP peering problem?

A. missing interface under OSPF IGP configuration

B. hello timers mismatch on Router 1 and Router 2

C. password for LDP session mismatch on Router 1 and Router 2

D. MPLS LDP session protection is not configured

Answer: A

Q4. What is an important requirement with MPLS applications like Layer 3 MPLS VPNs?

A. All the PE routers loopback addresses should be summarized to reduce the number of routing table entries in the core routers.

B. Targeted hellos are required between all the PE routers.

C. An end-to-end LSP is required between the PE routers.

D. The LSPs that are built between the PE routers must be symmetrical (bidirectional).

Answer: C

Q5. Referring to the show output exhibit, which statement is correct?

A. The P1 router is receiving label information for the 10.0.2.1/32 prefix from two LDP peers.

B. The P1 router is receiving label information for the 10.7.1.1/32 prefix from two LDP peers.

C. The P1 router is using the IMP-NULL local label for the 10.7.1.1/32 prefix because 10.7.1.1/32 is the loopback interface IP address on the P1 router.

D. The P1 router will perform PHP for the 10.7.1.1/32 and 10.7.10.1./32 prefixes.

Answer: B

Q6. DS-TE implementations on Cisco routers support which bandwidth pool(s) and class type(s)? (Choose two.)

A. global pool only

B. subpool only

C. global pool and subpool

D. class-type 0 only

E. class-type 1 only

F. class-type 0 and class-type 1

Answer: CF

Q7. Which three conditions can occur when metering traffic using a dual token bucket traffic policing QoS mechanism on Cisco routers? (Choose three.)

A. conform

B. pass

C. violate

D. exceed

E. burst

F. matched

Answer: ACD

Q8. Referring to the Cisco IOS XR show command output exhibit,

what are three possible reasons that the GigabitEthernet0/1/0/10 LDP IGP sync status is not ready? (Choose three.)

A. GigabitEthernet0/1/0/10 is not configured to run LDP.

B. Graceful restart is not configured on the peer.

C. The LDP neighbor on GigabitEthernet0/1/0/10 is not up.

D. The OSPF neighbor on GigabitEthernet0/1/0/10 is not up.

E. LDP is up on GigabitEthernet0/1/0/10, but no label bindings have been received from the peer.

F. GigabitEthernet0/1/0/10 is a member link of Bundle-Ether9000.

Answer: CDE