最新的CCNP Service Provider認證 642-887考試題庫

問題1

A network engineer must make a reservable maximum bandwidth of 75 Mbps on a Cisco ASR 9000 series router. Which configuration satisfies this requirement in Cisco IOS XR?

A. rsvp
interface GigabitEthernet 0/1/0/1
bandwidth 75000000 bps

B. rsvp
interface GigabitEthernet 0/1/0/1
bandwidth 75 Mbps

C. mpls traffic-eng
interface GigabitEthernet 0/1/0/1
bandwidth 75 Mbps

D. mpls traffic-eng
interface GigabitEthernet 0/1/0/1
bandwidth 75000

正確答案: B

問題2

Which three options are class maps able to match? (Choose three.)

A. match protocol http url "*cisco"

B. match destination-port

C. match access-group

D. match all

E. match mac-address

F. match DSCP

正確答案: A,C,F

問題3

Drag and drop the MPLS TE components from left onto the function they provide on the right.

正確答案:

問題4

Which affinity value will be matched by the affinity bit mask of the affinity 0xFF00000A mask 0xFFFF000F command?

A. 0xFF000000

B. 0xFFFF000A

C. 0x00000000

D. 0x11110001

E. 0xFF00EEEA

正確答案: E

說明：（僅 VCESoft 成員可見）

問題5

Refer to the exhibit. You have applied this configuration to a router. Which additional task must you perform to enable the router to mark traffic correctly?

A. Add a second set configuration to the policy map to set the qos-group value to 4.

B. Configure the ciscotest class map to identify traffic to which QoS will be applied.

C. Create a service policy for inb6und traffic on interface pos 0/2/0/0.

D. Configure the ciscopolicy class map to identify traffic to which QoS will be applied.

正確答案: B

問題6

A service provider recently defined new SLA services that provide QoS transparency over MPLS DiffServ-TE services. Which two tunneling modes provide QoS transparency? (Choose two.)

A. uniform mode

B. short pipe mode

C. pipe mode without a explicit NULL LSP

D. pipe mode with an explicit NULL LSP

E. best effort mode

正確答案: B,D

說明：（僅 VCESoft 成員可見）

問題7

Referring to the show output exhibit, which statement is correct?

A. The P1 router is receiving label information for the 10.7.1.1/32 prefix from two LDP peers.

B. The P1 router is receiving label information for the 10.0.2.1/32 prefix from two LDP peers.

C. The P1 router is using the IMP-NULL local label for the 10.7.1.1/32 prefix because 10.7.1.1/32 is the loopback interface IP address on the P1 router.

D. The P1 router will perform PHP for the 10.7.1.1/32 and 10.7.10.1./32 prefixes.

正確答案: A

問題8

正確答案:

Explanation
Applies the QOS policy to interface-service policy
Defines the PHB qos action for each of the different traffic classes-policy map Defines the making parameters for classifying packets into service classes-class-map Applies the QOS policy to interface--service policy Defines the PHB qos action for each of the different traffic classes--policy map Defines the making parameters for classifying packets into service classes--class-map

問題9

A network engineer wants to implement QoS in an environment in which GRE tunnels are used. The engineer creates a policy map to classify the traffic and applies the map to the physical interface. Despite a successful ping to the end of the tunnel, the counter of the class-map ICMP does not register a hit. How can the engineer fix this problem?

A. enable QoS preclassify in the tunnel interface

B. send the ping with source tunnel 0

C. send the ping with source F0/0

D. enable QoS preclassify in the physical interface

正確答案: A

問題10

The network architecture team is proposing to enable Cisco MPLS TE over the entire service provider core network. Which two options are benefits of Cisco MPLS TE that affect their decision? (Choose two.)

A. Cisco MPLS TE data flows independent from the underlying IGP.

B. Cisco MPLS TE optimizes network resources.

C. Cisco MPLS TE tunneling does not require maintenance.

D. Cisco MPLS TE increases the data forwarding rate.

E. Cisco MPLS TE offers network resource reservation, which removes any need for QoS MQC policies.

正確答案: A,B

問題11

Scenario: