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

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

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

Answer: B

642-887 Prüfungen, 642-887 zertifizierungen Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE) www.it-pruefungen.de

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

Answer: C
Explanation:
= INT(41/8)
The AF behavior group defines four separate AF classes with Class 4 having the highest priority. Within each class, packets are given a drop precedence (high, medium or low). The combination of classes and drop precedence yields twelve separate DSCP encodings from AF11 through AF43 (see table)

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

Answer: A

Prüfungsvorbereitung Studienmaterial 642-887 deutsch Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE) www.it-pruefungen.de

QUESTION: 6

Which three mechanisms are used to implement MPLS TE? (Choose three.)

A. tunnel interface
B. CSPF
C. RSVP
D. LDP
E. MP-BGP

Answer: A,B,C
Explanation:
Constrained-Based Shortest Path First (CSPF).
Resource Reservation Protocol – Traffic Engineering is an extension of the resource reservation protocol (RSVP) for traffic engineering.