Download New Updated (Spring 2015) Cisco 350-029 Actual Tests 71-80

By | April 26, 2015

Ensurepass

 

QUESTION 71

Which two statements about MPLS point-to-multipoint traffic engineering (P2MP TE) are true? (Choose two)

 

A.

P2MP TE uses an OSPF extension that is different from the OSPF extension that is used in P2P TE.

B.

Loose path is not supported in P2MP TE.

C.

Multiple IP multicast groups can map to one P2MPtunnel.

D.

Affinity is not supported in P2MP TE.

E.

P2MP TE uses Constrained Shortest Path First (CSPF) to calculate paths.

 

Correct Answer: CE

 

 

QUESTION 72

Where are MPLS point-to-multipoint traffic engineering packets replicated?

 

A.

head-end router

B.

branch-point router

C.

midpoint router

D.

leaf-point router

E.

tail-end router

 

Correct Answer: B

Explanation:

Reference

http://www.cisco.com/en/US/docs/ios/mpls/configuration/guide/mp_te_p2mp.pdf

1.7. MPLS Traffic Engineering

 

 

QUESTION 73

Which statement about MPLS Traffic Engineering class-based tunnel selection (CBTS) is not true?

 

A.

Local mechanism is at the middle-point router.

B.

EXP selection is between multiple tunnels to the same destination

C.

Bundle members are configured with EXP values to carry.

D.

The tunnel selection is configured on the tunnel master.

E.

The tunnel master bundles the tunnel members

 

Correct Answer: A

Explanation:

1.7. MPLS Traffic Engineering

 

 

QUESTION 74

Which statement about MPLS Traffic Engineering policy-based tunnel selection (PBTS) is not true?

 

A.

The tunnel that is not configured with the policy-class command acts as the default.

B.

EXP selection is between multiple tunnels to the same destination

C.

There is no requirement for IGP extensions

D.

Tunnels are configured using the policy-class command and carry multiple EXP values.

E.

It supports VRF traffic, IP-to-MPLS switching, and MPLS-to-MPLSswitching

 

Correct Answer: D

Explanation:

1.7. MPLS Traffic Engineering

QUESTION 75

Which two models are the models of DiffServ-Aware Traffic Engineering? (Choose two)

 

A.

Policy-based Model

B.

Class based Model

C.

Russian Doll Model

D.

Global Tunnel Model

E.

MaximumAllocation Model

 

Correct Answer: CE

Explanation:

Therefore in practice, a Network Administrator might prefer to use:

The Maximum Allocation Model when s/he needs to ensure isolation across all Class Types without having to use pre-emption, and s/he can afford to risk someQoS degradation of Class Types other than the Premium Class.

The Russian Dolls Model when s/he needs to prevent QoS degradation of all Class Types and can impose preemption.

 

 

QUESTION 76

Which three statements about the Cisco MPLS TE Fast Reroute (FRR) process are true? (Choose three.)

 

A.

TE tunnels that are configured with the FRR option cannot be used as backup tunnels.

B.

TE tunnels that are configured with the FRR option can be used as backup tunnels.

C.

The backup tunnel that is used to protecta physical interface must have a valid IP address configured.

D.

Interfaces must use MPLS global label allocation.

E.

The source IP address of use backup tunnel and the merge point (MP) should not be reachable.

 

Correct Answer: ACD

Explanation:

Restrictions for MPLS Traffic Engineering–Fast Reroute Link and Node Protection

Interfaces must use MPLS Global Label Allocation.

Backup tunnel headend and tailend routers must implement FRR as described in draft- pan-rsvp-fastreroute-00.txt.

Backup tunnels are not protected. Ifan LSP is actively using a backup tunnel and the backup tunnel fails, the LSP is torn down.

LSPs that are actively using backup tunnels are not considered for promotion. If an LSP is actively using a backup tunnel and a better backup tunnel becomes available, the active LSP is not switched to the better backup tunnel.

You cannot enable FRR Hellos on a router that also has Resource Reservation Protocol (RSVP) Graceful Restart enabled.

(Applicable only to Release 12.2.) You cannot enable primary one-hop autotunnels, backup autotunnels, or autotunnel mesh groups on a router that is also configured with stateful switchover (SSO) redundancy. This restriction does not prevent an MPLS TE tunnel that is automatically configured by TE autotunnel from being successfully recovered by any midpoint router along the LSP’s path if the router experiences an SSO switchover.

MPLS TE LSPs that are fast reroutable cannot be successfully recovered if the LSPs are FRR active and the Point of Local Repair (PLR) router experiences an SSO.

When SSO (stateful switchover) occurs on a router, the switchover process must complete before FRR (fast reroute) can complete successfully. In a testing environment, allow approximately 2 minutes for TE SSO recovery to complete before manuallytriggering FRR. To check the TE SSO status, use the show ip rsvp high availability summary command.

 

Note the status of the HA state field.

When SSO is in the process of completing, this field will display ‘Recovering’.

When the SSO process has completed, this field will display ‘Active’.

 

 

QUESTION 77

Which statement about MPLS TE Fast Reroute (FRR) link protection operation is not true?

 

A.

It requires a next-hop backup tunnel.

B.

The backup tunnel terminates on the same tail-end router as the primary tunnel.

C.

The point of local repair (PLR) swaps the label and pushes the backup label.

D.

The restoration time is expected to be under 50 ms.

E.

The backup tunnel can have associated bandwidth capacity

 

Correct Answer: B

Explanation:

1.7. MPLS Traffic Engineering

Thebackup tunnel terminates on the merge point (MP) where traffic rejoins the primary tunnel.

 

 

QUESTION 78

Which statement about MPLS TE Fast Reroute (FRR) node protection operation is not correct?

 

A.

It requires a next-next hop backup tunnel.

B.

Pointof local repair (PLR) swaps the next hop label and pushes the backup label.

C.

The backup tunnel terminates on the merge point (MP) where traffic rejoins the primary tunnel.

D.

The backup tunnel can have associated bandwidth capacity.

E.

Restoration time is expected under 50 ms.

 

Correct Answer: E

Explanation:

1.7. MPLS Traffic Engineering

Restoration time depends on failure detection time.

 

 

QUESTION 79

Which BGP community is used to prevent the advertisement of the BGP prefix to other BGP peers?

 

A.

no-advertise

B.

additive

C.

no-export

D.

local-as

E.

none

 

Correct Answer: A

 

 

 

 

 

 

 

QUESTION 80

With the BGP peerings shown, which 3 solutions are most correct? (Choose three.)

 

clip_image002

 

A.

rtrA and rtrD areroute-reflector-clients; rtrB and rtrC are route reflectors part of the same cluster.

B.

rtrA and rtrD are route-reflector-clients; rtrB and rtrC are route reflectors part of the different cluster.

C.

rtrA, rtrB and rtrC are part of a confederation sub-ASand rtrD is part of a different confederation sub-AS

D.

rtrA, rtrB are part of one confederation sub-AS and rtrC, rtrD are part of a different confederation sub-AS

E.

rtrA, rtrB and rtrC are part of a confederation sub-AS where rtrB is a route reflectorand rtrA, rtrC are routereflector-clients.

 

Correct Answer: BDE

 

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