644-906 Exam Details

  • Exam Code
    :644-906
  • Exam Name
    :Implementing and Maintaining Cisco Technologies Using IOS XR
  • Certification
    :Cisco Certifications
  • Vendor
    :Cisco
  • Total Questions
    :77 Q&As
  • Last Updated
    :Sep 20, 2021

Cisco 644-906 Online Questions & Answers

  • Question 1:

    In which mode can you check the power usage of a chassis?

    A. in EXEC mode
    B. in admin mode
    C. in both EXEC and admin mode
    D. in ROMMON mode
    E. in environmental mode

  • Question 2:

    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

  • Question 3:

    How many stages of switching are there on a Cisco ASR 9000 Series Router switch fabric?

    A. one
    B. three
    C. four
    D. eight

  • Question 4:

    What are the two minimum tasks and configurations that are required for the forwarding of multicast traffic using Source-Specific Multicast? (Choose two.)

    A. installing services PIE on the router
    B. installing multicast PIE on the router
    C. configuring multicast-routing on interfaces
    D. configuring PIM on interfaces

  • Question 5:

    What is the correct Cisco IOS XR command to configure an autonomous system number 1000 for BGP and to support IPv4, IPv6, and unicast routing?

    A. router bgp 1000address-family ipv4 unicast!address-family ipv6 unicast!!
    B. router bgp 1000neighbor 1.1.1.1 remote-as 2000address-family ipv4 unicast!address-family ipv6 unicast!!
    C. router bgp 1000address-family vpnv4 unicast!address-family vpnv6 unicast!!
    D. router bgp 1000neighbor 1.1.1.1 remote-as 2000address-family vpnv4 unicast!address-family vpnv6 unicast!!

  • Question 6:

    Which two commands will allow you to check if interface Bundle-Ether1 has ACL Ethernet_In applied to its ingress? (Choose two.)

    A. show access-list ipv4 Ethernet_In
    B. show interface Bundle-Ether1 access-list
    C. show running-config interface Bundle-Ether 1
    D. show running-config ipv4 access-list Ethernet_In
    E. show ipv4 interface Bundle-Ether 1

  • Question 7:

    How would MPLS Label Distribution Protocol, Graceful Restart be configured on TenGigE 0/0/0/1?

    A. Interface Ten0/0/0/1mpls ipGraceful-restart
    B. router ospfinterface Ten 0/0/0/1address-family ipv4 unimpls ipgraceful-restart
    C. mpls ldpaddress-family ipv4 unicastmpls ipgraceful-restart
    D. mpls ldpgraceful restartinterface Ten 0/0/0/1

  • Question 8:

    Refer to the show environmental power-supply command output exhibit. How much power is the system currently using?

    A. 663 W
    B. 1150 W
    C. 1850 W
    D. 6000 W

  • Question 9:

    Which Cisco IOS XR only command will show the status of IPv4 interfaces that have been configured under the OSPF process?

    A. show ospf interface
    B. show ipv4 ospf interface
    C. show ip ospf interface
    D. show ospf interface all
    E. show ospfv3 interface
    F. show ospf address-family

  • Question 10:

    Refer to the show environmental power-supply command output exhibit. How many additional line cards of the same type that are currently in the system can you safely install and remain redundant in the worse power usage if there is a power supply failure?

    A. 1
    B. 2
    C. 3
    D. 4
    E. 5

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