QUESTION 51
Implementing IPoDWDM interfaces on Cisco CRS routers eliminates the need for which network component?
A. ROADM
B. external transponders
C. electrical-optical-electrical converters
D. electrical cross-connect
Answer: B
QUESTION 52
What is the correct formula for determining the CIR?
A. CIR = Bc/Tc
B. CIR = Bc x Tc
C. CIR = Tc/Bc
D. CIR = Bc + Be
E. CIR = Tc/(Bc+Be)
F. CIR = (Bc+Be)/Tc
Answer: A
QUESTION 53
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
QUESTION 54
Which QoS mechanism is used for congestion avoidance?
A. LLQ
B. CBWFQ
C. WRED
D. LFI
E. traffic policing
Answer: C
QUESTION 55
Only based on the Cisco IOS XR policy-map configuration exhibit, Which statement is correct? 
A. All DSCP AF41 marked packets will be dropped when the average queue length reaches 12,000 packets.
B. DSCP AF11 marked packets will be randomly dropped when the average queue length reaches 10,000 packets.
C. DSCP AF11 and AF41 marked packets are guaranteed a minimum bandwidth of 1 Mb/s.
D. DSCP AF11 and AF41 marked packets are guaranteed a maximum bandwidth of 1 Mb/s.
Answer: B
QUESTION 56
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
QUESTION 57
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
QUESTION 58
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
QUESTION 59
When implementing MPLS TE tunnels on Cisco IOS XR routers, what is the tunnel setup and hold priority value range, and which value has the highest priority?
A. 0-63, where 0 is the highest priority
B. 0-63, where 63 is the highest priority
C. 0-7, where 0 is the highest priority
D. 0-7, where 7 is the highest priority
Answer: C
QUESTION 60
Which Cisco IOS XR command should be used in order to enable LDP on all interfaces for which the IGP protocol is enabled?
A. RP/0/0/CPU0:R1(config-ospf)#mpls ldp auto-config
B. RP/0/0/CPU0:R1(config-ospf)#mpls ldp interface all enable
C. RP/0/0/CPU0:R1(config-ospf)#enable all
D. RP/0/0/CPU0:R1(config-ldp)#enable all
Answer: A
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