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When troubleshooting LDP operations on the Cisco IOS and IOS XE routers, what is one of the first things that should be verified?
A. if running OSPF as the IGP, ensure that OSPFv3 has been enabled
B. check if the ip cef command has been enabled
C. verify in the running configurations that all of the required LDP interfaces are defined under the mpls ldp command configuration mode
D. verify if there are any access lists that are denying TCP and UDP port 464 packets
Correct Answer: B
A network engineer must make a reservable maximum bandwidth of 75 Mbps on a Cisco ASR 9000 series router. Which configuration satisfies this requirement in Cisco IOS XR?
Correct Answer: C
Which two values must be specified in a Cisco NBAR configuration? (Choose two.)
A. port number
B. IP precedence
C. neighbor discovery address
E. transport protocol
Correct Answer: AE
On Cisco routers, which three methods can be used to map traffic into the MPLS traffic engineering tunnel? (Choose three.)
A. on-demand routing
B. static routing
C. optimized edge routing
D. policy-based routing
Correct Answer: BDE
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.
Correct Answer: CDE
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Refer to the exhibit.
A network engineer who is working for an ISP wants to override the QoS that comes from the customer. The engineer wants to set a QoS value of 5 for all traffic. What are two reasons why the configuration is not working? (Choose two.)
A. The service-policy command should point to the service policy, not to the class map
B. The set command should reference CoS instead of MPLS EXP bits
C. The service-policy configuration should be set as output
D. The policy-map configuration needs to reference class-map Custom1
E. The number 350 in the xconnect command should appear after the encapsulation type
Correct Answer: AD
Which three commands are used to troubleshoot why IP packets are not forwarded on the LSP? (Choose three.)
A. show cef prefix/length to check the prefix information
B. debug mpls ldp transport events to display events related to the LDP peer discovery mechanism
C. show mpls forwarding labels hardware egress location to check the hardware label FIB
D. show arp location for the next hop prefix
E. show mpls ldp discovery for the corresponding label information
F. debug mpls ea platform all to display MPLS setup events and errors
Correct Answer: ACD
Which protocol is used to send MPLS OAM traffic over an MPLS network?
B. IP protocol number 137
Correct Answer: D
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.
Correct Answer: D
Which two features are used to provide Cisco MPLS TE node and link protection? (Choose two.)
B. fast reroute
C. backup tunnels
Correct Answer: BC
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