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Total 130 questions
Which Cisco IOS XR command should be used in order to enable LDP-IGP synchronization for the ISIS IGP protocol?
- A. RP/0/RSP0/CPU0:R1(config-isis-if-af)#mpls ldp sync
- B. RP/0/RSP0/CPU0:R1(config-isis)#mpls ldp sync
- C. RP/0/RSP0/CPU0:R1(config-ldp)#isis ldp sync
- D. LDP-IGP synchronization is not supported for the ISIS IGP protocol on Cisco IOS XR platforms
Answer : A
Scenario:
On P2IOS-XR router what is targeted LDP hellos hold time on LDP session with 10.0.1.1:0
LDP ID?
- A. 90 sec
- B. 10 sec
- C. 3 sec
- D. 8.6 sec
Answer : A
Explanation: Issue on P2: show mpls ldp discovery (details).
Ps: The command show mpls ldp parameter is not Implemented.
Look at the end, you will see the hello and the holdtime values for the target neighbour. Be careful he is asking for "targeted LDP hellos hold time". No other command will work!!! At the end of the show result you will see something looks like the following:
LDP discovery sources:
Targeted Hello 10.0.2.1 -> 10.0.1.1 active, passive;
Hello: 30 sec -
holdtime: 90 sec
How many labels does an MPLS packet have, with a bottom-of-stack label set to zero?
- A. The packet has no label.
- B. The packet has one label.
- C. The packet may have one or more labels.
- D. The packet has at least two labels.
Answer : D
Which statement describes the QoS behavior between P and PE routers of an MPLS provider network for an L3VPN service?
- A. The PE function honors DSCP markings set by the CE.
- B. The customer and provider must agree on DSCP classification and traffic priorities.
- C. Classification of customer traffic is handled by the P router.
- D. The PE function cannot map DSCP markings to MPLS EXP bits.
Answer : B
Referring to the Cisco IOS XR show command output exhibit,
- 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 : C,D,E
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