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The Best Cisco CCNP Service Provider 642-887 Dumps Exam Questions And Answers (Q1-Q15)
QUESTION 1
An engineer is allocating a determined amount of bandwidth to a customer Cisco MPLS TE tunnel to guarantee its availability on a 24/7 SLA type. Which option must be configured to make sure the customer is able to use the bandwidth agreed on the SLA?
A. RSVP that guarantees bandwidth availability end-to-end
B. Cisco MPLS TE tunnel to signal the bandwidth required
C. a QoS policy to reinforce the RSVP bandwidth reservation
D. overprovisioning to guarantee bandwidth
Correct Answer: C
QUESTION 2
Which Cisco IOS XR high-availability feature is used to prevent routes from being used before LDP converges?
A. LDP session protection
B. LDP-IGP synchronization
C. BFD
D. IGP session protection
Correct Answer: B
QUESTION 3
On the Cisco ASR9K router, when using the bandwidth command to specify the minimum guaranteed bandwidth to be allocated for a specific class of traffic, what will be used as the queuing algorithm?
A. custom queuing
B. CBWFQ
C. WFQ
D. FIFO
E. priority queuing
Correct Answer: B
QUESTION 4
A DSCP value of 41 in decimal corresponds to which IP precedence value?
A. 3 ?Flash
B. 4 ?Flash Override
C. 5 ?Critical
D. 6 ?Internet Control
E. 7 ?Network Control
Correct Answer: C
QUESTION 5
An engineer has been tasked to configure a guaranteed 2 Mbps of bandwidth for outgoing FTP traffic on interface FastEthernet 1/1/1 on Cisco IOS XR. Which method accomplishes this configuration?
A. configure terminal
class-map FTP_CLASS
match protocol ftp
exit
policy-map POLICY_1
class FTP_CLASS
bandwidth 2000
exit
exit
interface FastEthernet 1/1/1
service-policy output POLICY_1
end
commit
B. configure terminal
class-map FTP_CLASS
match protocol ftp
exit
policy-map POLICY_1
class FTP_CLASS
bandwidth 2000000
exit
exit
interface FastEthernet 1/1/1
service-policy input POLICY_1
end
commit
C. configure terminal
access-list 100 permit ip any any eq 21
policy-map POLICY_1
match ip access-list 100
bandwidth 2000
exit
exit
interface FastEthernet 1/1/1
service-policy output POLICY_1
end
commit
D. configure terminal
policy-map POLICY_1
class FTP_CLASS
match protocol ftp
bandwidth 2000000
exit
exit
interface FastEthernet 1/1/1
service-policy input POLICY_1
end
commit
Correct Answer: A
QUESTION 6
Which three mechanisms are used to implement MPLS TE? 642-887 dumps (Choose three.)
A. tunnel interface
B. CSPF
C. RSVP
D. LDP
E. MP-BGP
Correct Answer: ABC
QUESTION 7
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-group. On the PE egress, classify based on the qos-group and then mark with mpls exp.
B. On the PE ingress, classify the customer traffic and then mark with mpls exp. On the PE egress, classify based on the mpls exp and then mark with qos-group.
C. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with qos-group.
D. On the PE ingress, trust the customer QoS markings. On the PE egress, classify based on the customer QoS markings and then mark with mpls exp.
Correct Answer: A
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
Correct Answer: ABD
QUESTION 9
Which configuration fulfills the requirement of configuring LDP with Cisco Nonstop Forwarding on a router with 5 minutes time to hold the forwarding table information and 1 minute retry timer value for an LDP connection?
A. mpls ldp
graceful-restart
graceful-restart forwarding state-holdtime 5
graceful-restart reconnect-timeout 1
interface GigabitEthernet0/0/0/0
!
B. mpls ldp
graceful-restart
graceful-restart forwarding state-holdtime 300
graceful-restart reconnect-timeout 60
interface GigabitEthernet0/0/0/0
!
C. mpls ldp
nsr
graceful-restart
graceful-restart forwarding state-holdtime 300
graceful-restart reconnect-timeout 60
interface GigabitEthernet0/0/0/0
!
D. mpls ldp
nsr
graceful-restart
graceful-restart forwarding state-holdtime 5
graceful-restart reconnect-timeout 1
interface GigabitEthernet0/0/0/0
!
Correct Answer: B
QUESTION 10
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
Correct Answer: BDE
QUESTION 11
Cisco MPLS TE resource attributes that are configured locally for each link are distributed to the headend router of the traffic engineering tunnel using which protocol?
A. BGP
B. MP-BGP
C. LDP
D. RSVP
E. OSPF or IS-IS with TE extension
Correct Answer: E
QUESTION 12
Which Cisco IOS XR command should be used in order to enable LDP on all interfaces for which the IGP protocol is enabled?
A. RP/0/0/CPU0:R1(config-ospf)#mpls ldp auto-config
B. RP/0/0/CPU0:R1(config-ospf)#mpls ldp interface all enable
C. RP/0/0/CPU0:R1(config-ospf)#enable all
D. RP/0/0/CPU0:R1(config-ldp)#enable all
Correct Answer: A
QUESTION 13
The regional operation center deploys a Cisco MPLS TE tunnel over the company’s core network. The Cisco MPLS TE tunnel is up and no error is detected, but no traffic is traversing the tunnel. 642-887 dumps Which two issues are possible causes? (Choose two.)
A. The provider edge router is not performing the correct redistribution.
B. The interior gateway protocol has no knowledge of the Cisco MPLS TE tunnel.
C. No static route has been defined to route data traffic over the Cisco MPLS TE tunnel.
D. The customer edge router is injecting rogue IPv4 prefixes in the provider edge routing table.
E. The end-to-end label switched path has not been established.
Correct Answer: BC
QUESTION 14
An engineer has been tasked to configure a guaranteed 10 Mbps priority queue for traffic matched by class-map VOICE_CLASS on Cisco IOS XR. Which policy must be applied for outgoing traffic on interface FastEthernet 0/0/1?
A. configure
policy-map VOICE_POLICY
class VOICE_CLASS
police rate 10000
exceed-action drop
exit
priority level 1
exit
exit
interface FastEthernet 0/0/1
service-policy output VOICE_POLICY
commit
B. configure
policy-map VOICE_POLICY
class VOICE_CLASS
priority percent 10
exit
exit
interface FastEthernet 0/0/1
service-policy output VOICE_POLICY
commit
C. configure
policy-map VOICE_POLICY
class VOICE_CLASS
police rate 1000
exceed-action drop
exit
priority level 1
exit
exit
interface FastEthernet 0/0/1
service-policy output VOICE_POLICY
commit
D. configure
policy-map VOICE_POLICY
class VOICE_CLASS
police rate 10 Mbps
exceed-action shape
exit
priority level 1
exit
exit
interface FastEthernet 0/0/1
service-policy output VOICE_POLICY
commit
Correct Answer: A
QUESTION 15
Which two features are used to provide Cisco MPLS TE node and link protection? (Choose two.)
A. autoroute
B. fast reroute
C. backup tunnels
D. BFD
Correct Answer: BC
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