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Q1. When implementing MPLS DS-TE on Cisco IOS XR routers, all aggregate Cisco MPLS TE traffic is mapped to which class type by default?

A. class-type 0 (bandwidth global pool)

B. class-type 1 (bandwidth subpool)

C. class-type 2 (bandwidth priority)

D. class type class-default (bandwidth best-effort)

Answer: A

Q2. Referring to the traceroute output exhibit that is shown,

which statement is correct?

A. There is no problem with the end-to-end LSP as indicated by the successful trace.

B. Normal PHP operation is performed by the hop 4 router.

C. The end-to-end LSP is broken at hop 4.

D. At each hop, each LSR is able to perform label swapping.

Answer: C

Q3. Refer to the Cisco IOS XR policy-map configuration exhibit.

What is wrong with the policy-map configuration?

A. missing the priority percent command under class one and class two

B. missing the police command under class one and class two

C. missing the police command under class three

D. missing the priority bandwidth command under class one and class two

E. missing the bandwidth command under class one and class two

Answer: B

Q4. When a link flaps, an mpls ldp session will also flap. Which feature minimizes traffic loss and provides faster convergence after the link is re-established?

A. BFD

B. MPLS LDP IGP SYNC

C. graceful restart

D. LDP session protection

E. LDP nonstop routing

Answer: D

Q5. Which four pieces of information are stored for each prefix in the LFIB? (Choose four.)

A. local label

B. outgoing label

C. next-hop IP address

D. outgoing interface

E. incoming interface

F. Layer 2 header rewrite information

Answer: ABCD

Q6. Which item is not available to be used for QoS classification in Cisco IOS XR?

A. MAC SA

B. protocol

C. inner EXP

D. discard-class

E. QoS-group

F. VLAN

Answer: C

Q7. Refer to the Cisco IOS XR configuration exhibit.

Which statement is correct?

A. The backup tunnel-te 10 tunnel is using the highest setup and hold priority settings of 7.

B. The backup tunnel path is learned dynamically.

C. The fast-reroute command is missing under the (config-mpls-te-if)# configuration mode.

D. Interface gi0/0/0/10 is the protected link.

Answer:  

Q8. LDP session protection uses which one to maintain the LDP session between LDP neighbors?

A. LDP NSF

B. LDP NSR

C. backup-targeted LDP hellos

D. BFD

E. LDP-IGP synchronization

Answer: C

Q9. On the Cisco IOS XR, which MQC configuration is different than on the Cisco IOS and IOS XE?

A. On the Cisco IOS XR, WRED can only be applied in the output direction.

B. On the Cisco IOS XR, marking can only be applied in the input direction.

C. On the Cisco IOS XR, LLQ can be applied in the input or output direction.

D. On the Cisco IOS XR, LLQ can use up to four priority queues: level 1, level 2, level 3, and level 4.

Answer: C

Q10. Which are typical class-based marking policies that are implemented on service provider IP NGN PE routers?

A. On the PE ingress, classify the customer traffic and then mark with qos-group. On the PE egress, classify based on the qos-group and then mark with mpls exp.

B. On the PE ingress, classify the customer traffic and then mark with mpls exp. On the PE egress, classify based on the mpls exp and then mark with qos-group.

C. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with qos-group.

D. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with mpls exp.

Answer: A