Ensurepass

QUESTION 51

DRAG DROP

clip_image002

 

Correct Answer:

clip_image004

 

 

QUESTION 52

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 53

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

 

Correct Answer: B

 

 

QUESTION 54

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 55

On the Cisco IOS XR, when using the match protocol command within a class-map to classify traffic, you noticed that the match protocol option on the Cisco IOS XR shows much fewer protocol options than on the Cisco IOS or IOS XE, like there is no option such as the match protocol yahoo-messenger command on the Cisco IOS XR. Why is this?

 

A.

because the Cisco IOS XR router does not have the correct software packages installed

B.

because when defining the class-map, the class-map type should be set to type inspect: class-map type inspect class-map-name command

C.

because NBAR is not supported on the Cisco IOS XR

D.

because flexible packet matching has not been enabled on the Cisco IOS XR router

 

Correct Answer: C

 

 

QUESTION 56

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

 

A.

tunnel interface

B.

CSPF

C.

RSVP

D.

LDP

E.

MP-BGP

 

Correct Answer: ABC

Explanation:

Constrained-Based Shortest Path First (CSPF).

Resource Reservation Protocol – Traffic Engineering is an extension of the resource reservation protocol (RSVP) for traffic engineering.

 

 

QUESTION 57

An engineer wants to extend the trust boundary to a Cisco IP Phone. Which protocol should be used?

 

A.

CDP

B.

CoS

C.

ToS

D.

802.1Q

 

Correct Answer: A

 

 

QUESTION 58

Which two statements are correct in describing ISP environments that are running IP/MPLS in the core network? (Choose two.)

 

A.

On the PE routers, each BGP route must use a unique label to reach the BGP next hop.

B.

The BGP next hops point to the PE routers, and only the PE routers are required to run BGP.

C.

A full mesh of IBGP sessions are required between all of the PE and P routers to ensure proper packets forwarding.

D.

The PE and P routers run LDP to learn the labels for reaching the BGP next-hop addresses.

 

Correct Answer: BD

 

 

QUESTION 59

Which Cisco IOS XR command should be used to identify if MPLS TE FRR is enabled?

 

A.

show mpls traffic-eng tunnel <tunnel#>

B.

show mpls frr

C.

show mpls traffic-eng protection

D.

show mpls protection

E.

show mpls fast-reroute

 

Correct Answer: A

Explanation:

The MPLS Traffic Engineering (TE)–Fast Reroute (FRR) Link and Node Protection feature provides link protection (backup tunnels that bypass only a single link of the label-switched path (LSP)), node protection (backup tunnels that bypass next-hop nodes along LSPs), and the following FRR features:

clip_image006Backup tunnel support

clip_image006[1]Backup bandwidth protection

clip_image006[2]Resource Reservation Protocol (RSVP) Hellos

Prerequisites for MPLS Traffic Engineering (TE)–Fast Reroute (FRR) Link and Node Protection

Your network must support the following Cisco IOS features:

clip_image006[3]IP Cisco Express Forwarding

clip_image006[4]Multiprotocol Label Switching (MPLS)

Your network must support at least one of the following protocols:

clip_image006[5]Intermediate System-to-Intermediate System (IS-IS)

clip_image006[6]Open Shortest Path First (OSPF)

Before configuring FRR link and node protection, it is assumed that you have done the following tasks but you do not have to already have configured MPLS TE tunnels:

clip_image006[7]Enabled MPLS TE on all relevant routers and interfaces

clip_image006[8]Configured MPLS TE tunnels

 

 

QUESTION 60

Which three conditions can occur when metering traffic using a dual token bucket traffic policing QoS mechanism on Cisco routers? (Choose three.)

 

A.

conform

B.

pass

C.

violate

D.

exceed

E.

burst

F.

matched

 

Correct Answer: ACD

 

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