[Free] 2017(Oct) EnsurePass Testking Cisco 642-887 Dumps with VCE and PDF 11-20

EnsurePass
2017 Oct Cisco Official New Released 642-887
100% Free Download! 100% Pass Guaranteed!
http://www.EnsurePass.com/642-887.html

Implementing Cisco Service Provider Next-Generation Core Network Services

Question No: 11

Refer to the Cisco IOS XR configuration exhibit.

Ensurepass 2017 PDF and VCE

Which statement is correct?

  1. The backup tunnel-te 10 tunnel is using the highest setup and hold priority settings of 7.

  2. The backup tunnel path is learned dynamically.

  3. The fast-reroute command is missing under the (config-mpls-te-if)# configuration mode.

  4. Interface gi0/0/0/10 is the protected link.

Answer: D

Question No: 12

Which three commands are used to troubleshoot why IP packets are not forwarded on the LSP? (Choose three.)

  1. show cef prefix/length to check the prefix information

  2. debug mpls ldp transport events to display events related to the LDP peer discovery mechanism

  3. show mpls forwarding labels lt;label-idgt; hardware egress location lt;node-idgt; to check the hardware label FIB

  4. show arp lt;prefixgt; location lt;node-idgt; for the next hop prefix

  5. show mpls ldp discovery for the corresponding label information

  6. debug mpls ea platform all to display MPLS setup events and errors

Answer: A,C,D

Question No: 13

Which protocol is used to send MPLS OAM traffic over an MPLS network?

  1. ICMP

  2. IP protocol number 137

  3. TCP

  4. UDP

Answer: D

Question No: 14

With unmanaged CE routers, at which point in the service provider network is the QoS trust boundary, and what is required at the trust boundary?

  1. between the CE and PE router and mapping of the customer traffic classes into the service provider traffic classes at the PE router ingress

  2. between the CE and PE router and trusting the QoS markings from the CE router and applying the required QoS mechanisms based on the customer QoS markings

  3. between the PE and the P router and mapping of the customer traffic classes into the service provider traffic classes at the P router ingress

  4. between the PE and P router and trusting the QoS markings from the CE router and applying the required QoS mechanisms based on the customer QoS markings

  5. between the customer network and the CE router ingress and applying the required egress QoS policy on the CE router

Answer: A

Question No: 15

On the Cisco IOS XR, which MQC configuration is different than on the Cisco IOS and IOS XE?

  1. On the Cisco IOS XR, WRED can only be applied in the output direction.

  2. On the Cisco IOS XR, marking can only be applied in the input direction.

  3. On the Cisco IOS XR, LLQ can be applied in the input or output direction.

  4. On the Cisco IOS XR, LLQ can use up to four priority queues: level 1, level 2, level 3, and level 4.

Answer: C

Question No: 16

Scenario:

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

On PE7 which statement is correct regarding the quot;traffic-policingquot; policy-map?

  1. The quot;traffic-policingquot; QoS policy is applied to the Gi0/0/0/0 interface in the outbound direction.

  2. The quot;traffic-policingquot; QoS policy will police the traffic matched by the quot;test12quot; ACL to 3 mbps and will drop all exceeding traffic.

  3. All incoming traffic not matched by the quot;test12quot; ACL to the Gi0/0/0/0 interface will be

    dropped.

  4. The quot;traffic-policingquot; QoS policy is using dual rate class-based traffic policing.

Answer: B Explanation:

#show running-config policy-map

#show policy-map

Question No: 17

Which three statements are correct regarding a Cisco MPLS TE? (Choose three.)

  1. A Cisco MPLS TE tunnel maps onto an LSP path.

  2. Tunnels are bidrectional by default.

  3. Packets that are mapped into a Cisco MPLS TE tunnel will have two labels, with the top label indicating what the tail-end router should do with the packet.

  4. A tunnel that is created with a priority of 0 can pre-empt an existing tunnel with a priority of 7.

  5. CBR takes into account link resource and traffic tunnel attributes.

  6. RSVP is used between customer routers.

Answer: A,D,E

Question No: 18

Which two fields are in the traffic engineering topology database? (Choose two.)

  1. TE-metric

  2. IGP metric

  3. link delay

  4. LSP setup priority

  5. LDP authentication

Answer: A,D

Question No: 19

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

  1. Short-pipe mode does not need MPLS usage, but pipe mode does.

  2. In short-pipe mode, the egress LSR uses the tunneled PHB marking, but in pipe mode, the egress LSR uses the LSP PHB marking.

  3. Pipe mode does guarantee that the tunneled packet marking remains unchanged, but short-pipe does not.

  4. In short-pipe mode, the egress LSR uses the LSP PHB marking, but in pipe mode, the egress LSR uses the tunneled PHB marking.

  5. Short-pipe mode can be implemented on MPLS networks regardless of the MPLS PHP mechanism usage.

Answer: B,E

Question No: 20

Scenario:

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

Ensurepass 2017 PDF and VCE

From PE8 router, what is the label action used to reach the P2 loopback 0 interface 10.0.2.1/32?

  1. Swap label 35 with label 16004

  2. Push label 16004

  3. Pop label 35

  4. Pop label 16009

  5. Push Label 16009

  6. Swap label 35 with label 16009

Answer: C

Explanation: show mpls forwarding-table , find prefix 10.0.2.1 and you will see there under outgoing Label quot;Pop Labelquot; (This is actually logic because the prefix is directly connected and therefore the packet will forward without label). If the router should forward any packet to that prefix, the packet should be received with Local label on PE8 (Local Label = 35), the router will remove it and forward it without Label.

100% Free Download!
Download Free Demo:642-887 Demo PDF
100% Pass Guaranteed!
Download 2017 EnsurePass 642-887 Full Exam PDF and VCE

EnsurePass ExamCollection Testking
Lowest Price Guarantee Yes No No
Up-to-Dated Yes No No
Real Questions Yes No No
Explanation Yes No No
PDF VCE Yes No No
Free VCE Simulator Yes No No
Instant Download Yes No No

2017 EnsurePass IT Certification PDF and VCE

You must be logged in to post a comment.

Proudly powered by WordPress   Premium Style Theme by www.gopiplus.com