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We provide 642-887 Dumps which are the best for clearing 642-887 test, and to get certified by Cisco Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE). The 642-887 Dumps covers all the knowledge points of the real 642-887 exam. Crack your Cisco 642-887 Exam with latest dumps, guaranteed!

Free demo questions for Cisco 642-887 Exam Dumps Below:

NEW QUESTION 1
When defining an explicit MPLS TE tunnel path, which two command options are available under the explicit-path configuration mode? (Choose two.)

  • A. exclude-address
  • B. include-address
  • C. next-address
  • D. dynamic-address

Answer: AC

NEW QUESTION 2
Given this configuration of an interface for MPLS traffic engineering on a Cisco IOS XE router:
interface POS1/1/0 mpls traffic-eng tunnels ip rsvp bandwidth 5000
Which option lists the equivalent configurations required on a Cisco IOS XR router?

  • A. interface POS1/1/0 mpls traffic-eng tunnels ip rsvp bandwidth 5000
  • B. mpls traffic-eng interface POS1/1/0
  • C. mpls traffic-eng interface POS1/1/1 bandwidth 5mb
  • D. mpls traffic-eng interface POS1/1/0 rsvpinterface POS1/1/0
  • E. mpls traffic-eng interface POS1/1/0 rsvpinterface POS1/1/0 bandwidth 5000

Answer: E

NEW QUESTION 3
Cisco MPLS TE path setup can be affected by which three tunnel attributes? (Choose three.)

  • A. bandwidth
  • B. delay
  • C. MTU
  • D. priority
  • E. affinity

Answer: ADE

NEW QUESTION 4
Which QoS technique can be used to protect customer traffic from being dropped by traffic rate limiting performed by the service provider?

  • A. LLQ
  • B. policing
  • C. fair-queue
  • D. shaping

Answer: D

NEW QUESTION 5
When a link flaps, an mpls ldp session will also flap. Which feature minimizes traffic loss and provides faster convergence after the link is re-established?

  • A. BFD
  • B. MPLS LDP IGP SYNC
  • C. graceful restart
  • D. LDP session protection
  • E. LDP nonstop routing

Answer: D

NEW QUESTION 6
DRAG DROP
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    Answer:

    Explanation: Place the options in the following order: Uniform Mode
    Short-Pipe Mode Pipe Mode

    NEW QUESTION 7
    Which four options are methods by which labels can be assigned in the label stack to an IP prefix? (Choose four.)

    • A. LDP
    • B. CEF
    • C. BGP
    • D. RSVP
    • E. static
    • F. IGP
    • G. route recursion
    • H. manual tagging

    Answer: ACDG

    NEW QUESTION 8
    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

    Answer: ABD

    NEW QUESTION 9
    A network operations center analyzes a Wireshark capture and tries to verify which QoS policy is effective over a customer router. How many bits define the DSCP values?

    • A. 3
    • B. 6
    • C. 8
    • D. 16

    Answer: B

    NEW QUESTION 10
    Which are typical class-based marking policies that are implemented on service provider IP NGN PE routers?

    • A. On the PE ingress, classify the customer traffic and then mark with qos-grou
    • B. On the PE egress, classify based on the qos-group and then mark with mpls exp.
    • C. On the PE ingress, classify the customer traffic and then mark with mpls ex
    • D. On the PE egress, classify based on the mpls exp and then mark with qos-group.
    • E. On the PE ingress, trust the customer QoS marking
    • F. On the PE egress, classify based on the customer QoS markings and then mark with qos-group.
    • G. On the PE ingress, trust the customer QoS marking
    • H. On the PE egress, classify based on the customer QoS markings and then mark with mpls exp.

    Answer: A

    NEW QUESTION 11
    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

    NEW QUESTION 12
    Scenario:
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    642-887 dumps exhibit
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    On CE7 which statement is correct regarding Traffic the QoS policy applied to the gi0/0 interface in the input direction?

    • A. Traffic matching the "MARKING2" class-map will be marked with qos-group 5
    • B. Traffic matching the "MARKING1" class-map will be marked with MPLS EXP 5
    • C. All incoming packets not matched bythe"MARKING1" class-map will be dropped
    • D. All incoming packets with the DSCP EF marking with be marked with MPLS EXP 0

    Answer: B

    Explanation: Issue: show policy-map interface gi0/0
    First find out which policy-map is applied (it called something like QOSPOLICY1)
    A is wrong. Class MARKING2 is indeed defined but not applied to that policy-map. There are two class-maps applied MARKING1 and class-default. Both will mark the traffic with MPLS EXP values.
    default:
    set mpls experimental imposition 0 MARKING1
    set mpls experimental imposition 5

    NEW QUESTION 13
    Which three fields must be the same in an IPv6 header to consider different packets on the same flow? (Choose three.)

    • A. source port
    • B. destination address
    • C. destination port
    • D. source address
    • E. flow label
    • F. transport protocol type

    Answer: BDE

    NEW QUESTION 14
    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 <label-id> hardware egress location <node-id> to check the hardware label FIB
    • D. show arp <prefix> location <node-id> 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

    Answer: ACD

    NEW QUESTION 15
    A service provider runs MPLS in its core. What is the relationship between FIB, LIB, and LFIB in this
    environment?

    • A. Data from the FIB and LIB tables is used to generate the LFIB
    • B. The FIB, LIB, and LFIB are populated independently
    • C. The LIB and FIB are populated with labels and next-hop attributes in the control plane and are used topopulate the LFIB
    • D. The LFIB is populated with information from the IP routing table and is shared with the FIB and LIB toassign labels to the path

    Answer: A

    NEW QUESTION 16
    Which two characteristics describe the difference between MPLS QoS pipe and short-pipe models? (Choose two)

    • A. Short-pipe mode does not need MPLS usage, but pipe mode does.
    • B. In short-pipe mode, the egress LSR uses the tunneled PHB marking, but in pipe mode, the egress LSR uses the LSP PHB marking.
    • C. Pipe mode does guarantee that the tunneled packet marking remains unchanged, but short-pipe does not.
    • D. In short-pipe mode, the egress LSR uses the LSP PHB marking, but in pipe mode, the egress LSR uses the tunneled PHB marking.
    • E. Short-pipe mode can be implemented on MPLS networks regardless of the MPLS PHP mechanism usage.

    Answer: BE

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