[Free] Download New Latest (June 2016) Cisco 400-201 Practice Test 81-90

Ensurepass

QUESTION 81

What are the two benefits of graceful restart? (Choose two)

 

A.

Graceful restart allows session information recovery without disruption to the network.

B.

A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kept on state information, which helps the failed node recover faster and does not affect the current forward traffic.

C.

Graceful restart allows a node to recover state from its neighbor when there is no RP or before the device undergoes SSO.

D.

Graceful restart does not allow session information recovery.

E.

During a graceful restart, the router removes any stale prefixes after a timer for stale entries expires

 

Correct Answer: AB

 

 

 

 

 

 

QUESTION 82

If two routers, both reachable from one another, originate functionally equivalent type 2 external LSAs (i.e. same destination, cost and non-zero forwarding address). Which of the following statements would apply?

 

A.

Only the LSA generated by the lowest RID ASBR will exist in the network.

B.

Two LSAs will exist in the network for this destination, but only the one generated by the highest RID ASBR will be used.

C.

Two LSAs will exist in the network for this destination, and both will be used.

D.

Only the LSA generated by the highest RID ASBR will exist in the network.

 

Correct Answer: D

 

 

QUESTION 83

Which option describes the incorrect usage of the Label Distribution method?

 

A.

MP-BGP is used for label distribution for VPN customer routes.

B.

LDP is primarily used in internal networks of MPLS-VPN providers.

C.

MP-BGP is used for label distribution in MPLS Traffic Engineered networks.

D.

Directed LDP is used for label distribution in L2-VPN Attachement Circuits.

 

Correct Answer: C

 

 

QUESTION 84

Which three statements about bidirectional PIM are true? (Choose three)

 

A.

Traffic for a bidirectional group flows along the one shared tree and simultaneously utilizes multiple paths in a redundant network topology.

B.

It does not require any traffic signaling in the protocol

C.

Membership to a bidirectional group is signaled using explicit Join messages.

D.

It maintains source-specific forwarding state.

E.

It reduces memory, bandwidth, and CPU requirements

 

Correct Answer: BCE

Explanation:

Reference: http://www.cisco.com/en/US/docs/ios/12_1t/12_1t2/feature/guide/dtbipim.html

 

 

QUESTION 85

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-MPLS switching

 

Correct Answer: D

Explanation:

1.7. MPLS Traffic Engineering

QUESTION 86

Process-level redundancy is implemented by a system manager process that creates the standby process. What two functions are provided by the system-level process called Qnet Symlink Manager (QSM)? (Choose two.)

 

A.

backing up the information for the broken connections

B.

provides common information for connecting processes and services

C.

detection of a failed connection

D.

provides an abstract name for a process or service Guaranteed success with TestInsides practice guides 47

E.

distribution of symbolic link information

 

Correct Answer: DE

Explanation:

1.4. SP high end product

1.4.01. IOS-XR structure

Process-Level Redundancy

Process-level redundancy is implemented by a system manager process creating the standby process.

Because the active process created the standby process, the active process has all the information that it needs to communicate with the standby process. The active process uses a checkpoint database to share running state with the standby process. Symbolic links and abstract names are used to identify the processes.

Clients do not see the standby process until the active goes away. If a process fails and it has created a standby process, a system-level process called QNet Symlink Manager (QSM) and a library called Event Connection Manager (ECM) are used to re-establish links from the clients to the processes.

 

QSM provides:

Distribution of symbolic link information

Abstract name for a process or service

ECM provides:

Common information for connecting processes and services

Detection of broken connections

Only processes considered essential by development engineers are designated to support process-level redundancy. This is not a user-configurable option.

Clients have to reconnect to the “new” active process (the “original” standby process) when they detect that the active process has failed. Clients can connect to it using the symbolic links and abstract names. The new active process creates a new standby process.

The general steps in process redundancy are:

The active process dies.

The standby process becomes the active process.

A new standby process starts.

The new active process begins sending updates to the new standby process.

Clients begin using the new active process through the symbolic links and abstract names.

 

 

QUESTION 87

What is the importance of using Virtual Output Queues on ingress Line Cards in a high-end router?

 

A.

Increases forwarding performance

B.

Simplifies configuration

C.

Prevents head-of-line blocking

D.

Uses less memory

 

Correct Answer: C

Explanation:

The 12000 uses virtual output queues to eliminate the Head of Line Blocking within the switch fabric.

 

 

QUESTION 88

Which three statements about the BGP next-hop attribute are true? (Choose three.)

 

A.

EBGP sessions between confederation sub ASs do not modify the next-hop attribute.

B.

By default, iBGP sessions
change the next-hop attribute learned from eBGP peers to self address.

C.

By default, the next-hop attribute is not changed when a prefix is reflected by the route reflector

D.

EBGP sessions between confederation sub ASs change the next-hop attribute to peer address.

E.

By default, iBGP sessions preserve the next-hop attribute learned from eBGP peers.

 

Correct Answer: ACE

 

 

QUESTION 89

Cisco IOS XR software is partitioned into three planes: control, data, and management. Which three of these belong to the data plane? (Choose three.)

 

A.

XML

B.

RIB

C.

FIB

D.

QoS

E.

PFI

 

Correct Answer: CDE

Explanation:

(FIB, QoS, PFI). RIB is part of control plane

1.4. SP high end product

Cisco IOS XR Software is partitioned into three planes:

Control: Distributes routing tasks and management of the routing information base (RIB) to participating RPs; different routing processes can be running on different physical units.

Data: Maintains the forwarding information base (FIB) changes across the participating nodes, letting the router perform as a single forwarding entity.

Management: Controls the operation of the router as a single networking element.

 

 

QUESTION 90

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

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

 

Free VCE & PDF File for Cisco 400-201 Real Exam

Instant Access to Free VCE Files: CCNA | CCNP | CCIE …
Instant Access to Free PDF Files: CCNA | CCNP | CCIE …