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Cisco 642-887 Online Practice Questions and Exam Preparation

642-887 Exam Details

  • Exam Code
    :642-887
  • Exam Name
    :Implementing Cisco Service Provider Next-Generation Core Network Services
  • Certification
    :Cisco Certifications
  • Vendor
    :Cisco
  • Total Questions
    :184 Q&As
  • Last Updated
    :Dec 15, 2021

Cisco 642-887 Online Questions & Answers

  • Question 111:

    Refer to the exhibit.

    IT administrators report packet loss on the critical applications coming with CoS 4. Which option is the appropriate configuration to have a lower drop probability when the packets are processed using

    DSCP values?

    A. set ip dscp af22
    B. set ip dscp af41
    C. set ip dscp af13
    D. set ip dscp af32

  • Question 112:

    A customer MPLS domain recently required an excessive time to reconverge In response, a high availability solution will be deployed. Which command set should be issued to improve LDP high availability on IOS XE instances?

    A. Option A
    B. Option B
    C. Option C
    D. Option D

  • Question 113:

    An engineer must configure a policy on a Cisco IOS XE router that achieves the following: Traffic 2 Mbps or less is transmitted Traffic between 2 Mbps and 3 Mbps is marked with IP Precedence 4 Traffic that exceeds 3 Mbps is dropped Which configuration achieves this policy?

    A. Option A
    B. Option B
    C. Option C
    D. Option D

  • Question 114:

    A network engineer must analyze RSVP-TE signaling on a syslog server. Which three RSVP messages are valid? (Choose three.)

    A. RSVP PATH
    B. RSVP RESERVATION
    C. RSVP ESTABLISHED
    D. RSVP PATH TEAR
    E. RSVP KILL
    F. RSVP INIT

  • Question 115:

    Which affinity and mask value will match the link affinity that has 0x0F in the first 8 bits and 0x01 in the last 8 bits, and the middle 16 bits can be any value?

    A. affinity 0x0F000001 mask 0x0F000001
    B. affinity 0x0F000001 mask 0x00000000
    C. affinity 0x0F000001 mask 0x11111111
    D. affinity 0x0F000001 mask 0x11000011
    E. affinity 0x0F000001 mask 0xFF0000FF
    F. affinity 0x0F000001 mask 0x00FFFF00

  • Question 116:

    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

  • Question 117:

    When configuring LLQ (strict priority queue) on a traffic class using the Cisco IOS XR priority command on a Cisco ASR9K router, which additional QoS command is required for this traffic class?

    A. shape
    B. police
    C. random-detect
    D. bandwidth

  • Question 118:

    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.

  • Question 119:

    Which option is the appropriate way to configure a color-aware, dual-rate policer together with a color-blind, single-rate policer for the rest of the traffic?

    A. class-map match-all CLASS1 match dscp af31 class-map match all CLASS2 match dscp af32 class-map match-all CLASS3 match dscp ef policy-map POLICY1 class CLASS1 police rate 100000 peak-rate 200000 conform-color CLASS2 exceed-color CLASS3 conform-action set-dscp-transmit af11 exceed-action set-dscp-transmit af21 violate-action set-dscp-transmit af23
    B. class-map match-all CLASS 1 match dscp af31 class-map match-all CLASS2 match dscp af32 class-map match-all CLASS3 match dscp af33 policy-map POLICY1 class CLASS1 police rate 100000 burst 31250 conform-color CLASS2 exceed-color CLASS3 conform-action set-dscp-transmit af11 exceed-action set-dscp-transmit af21 violate-action set-dscp-transmit af23
    C. class-map match-all CLASS 1 match dscp af31 af32 af33 class-map match-all CLASS2 match dscp af32 class-map match-all CLASS3 match dscp af33 policy-map POLICY1 class CLASS1 police rate 100000 burst 31250 conform-color CLASS2 exceed-color CLASS3 conform-action set-dscp-transmit af31 exceed-action set-dscp-transmit af32 violate-action set-dscp-transmit af33 class class-default police rate percent 10 peak-rate percent 30
    D. class-map match-all CLASS 1 match dscp af31 af32 af33 class-map match-all CLASS2 match dscp af32 class-map match-all CLASS3 match dscp af33 policy-map POLICY1 class CLASS1 police rate 100000 peak-rate 200000 conform-color CLASS2 exceed-color CLASS3 conform-action set-dscp-transmit af31 exceed-action set-dscp-transmit af32 violate-action set-dscp-transmit af33 class class-default police rate percent 10 peak-rate percent 30
    E. class-map match-all CLASS 1 match dscp af31 af32 af33 class-map match-all CLASS2 match dscp af32 class-map match-all CLASS3 match dscp af33 policy-map POLICY1 class CLASS1 police rate 100000 peak-rate 200000 conform-color CLASS2 exceed-color CLASS3 conform-action set-dscp-transmit af31 exceed-action set-dscp-transmit af32 violate-action set-dscp-transmit af33 class class-default police rate 10000

  • Question 120:

    Which high-availability feature does not require communication with other peers?

    A. rLFA
    B. MPLS TE FRR
    C. Nonstop Routing
    D. NSF

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