644-906 Guide

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2021 Dec 644-906 dumps:

Q31. Which of the following functions can be configured in the Administration Config mode? (Choose two) 

A. BGP routing 

B. MPLS Traffic Engineering 

C. SDR hostname 

D. Secure Shell login 

E. nonowner SDR 

Answer: C,E 


Q32. What is the effect of a mandatory process, if it keeps restarting? 

A. router instability 

B. nothing, as Cisco IOS XR Software protects process space 

C. the router will reload 

D. it can cause routing adjacencies to flap 

E. displays a high CPU load error message 

Answer:


Q33. On a Cisco CRS, which statement is correct about what happens to the MSC if the associated PLIM is absent? 

A. The MSC boots up, but all egress packets from the switch fabric to this MSC will be dropped. 

B. The other PLIM in a different slot can utilize this MSC. 

C. The state of the MSC from the output of the command show platform would show as IOS XR RUN. 

D. The MSC does not boot up. 

Answer:


Q34. Refer to the exhibit. 

Examine the configuration for AAA and the vty line. 

If the user attempts to connect to the router via an SSH session to the vty, which one is true? 

A. The user will be prompted for a username and password and can successfully log in using "user1" and "lab." The user will be a member of the user group operator. 

B. The user will be prompted only for a password and can successfully log in using the password "cisco." The user will be a member of the user group operator. 

C. The user will be prompted only for a password and can successfully log in using the password "cisco." The user will not be assigned any tasks. 

D. The user will be prompted for a username and password and can successfully log in using "user1" and "lab." The user will be a member of the user group root-system. 

E. The user will not be able to authenticate with this configuration. 

Answer:


Q35. Which command should be used to view only the running configuration of OSPF in Cisco IOS XR Software? 

A. show router ospf 

B. show run router ospf 

C. show configuration ospf 

D. show ospf configuration | running-config 

E. show ospf process 

Answer:


Replace p4s 644-906:

Q36. What is the main function of LPTS? 

A. filter routing updates 

B. maintain the Internal Forwarding Information Base (IFIB) 

C. classify transit packets 

D. guarantee reliable transport service for network management requests 

Answer:


Q37. Referring to the diagram and configuration on Routers XR-1 and XR-2, 

which three statements are correct? (Choose three.) 

A. Router XR-1 can never be a designated router or designated intermediate system. 

B. The transmission of IS-IS packets will be suppressed on interface GigabitEthernet0/0/0/2 on Router XR-1. 

C. The received IS-IS packets from Router XR-2 will be suppressed from being processed. 

D. Router XR-1 and Router XR-2 will form a neighbor adjacency, and Router XR-2 will become the designated router or designated intermediate system. 

E. Router XR-1 will use the incremental shortest path first algorithm when there are minimal topology changes. 

F. Router XR-1 can form a neighbor adjacency over interface GigabitEthernet0/0/0/2 but will not advertise 10.1.1.0/24 in its link-state packets (LSPs). 

Answer: D,E,F 


Q38. Which four list the mandatory steps in order to implement SSH v1 access on Cisco IOS XR Software? (Choose four.) 

A. install and activate services PIE 

B. install and activate security PIE 

C. reload system after installing required PIE 

D. generate SSH cryptography key 

E. configure hostname and domain name 

F. configure ssh-server in owner SDR 

G. configure AAA services on the router 

H. configure TACACS server on the router 

Answer: B,D,E,F 


Q39. Which configuration is required in order for chassis management (for example, power and fan statistics) to be polled using SNMP? 

A. snmp-server community <community> RO 

B. snmp-server community <community> SDROwner 

C. snmp-server community <community> SystemOwner 

D. snmp-server community <community> RW 

Answer:


Q40. Where are client interfaces terminated on the Cisco CRS-3? 

A. the modular services card 

B. the physical layer interface module(s) 

C. the switch fabric interface terminator 

D. the Service Processor 40 

E. the Service Processor 140 

Answer:


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