[Free] 2017(Apr) Ensurepass Examcollection Cisco 400-201 Latest Dumps 281-290

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CCIE Service Provider Written Exam v4.1

QUESTION 281

Which OSPF LSA is used to support MPLS Traffic-Engineering?

 

A.

NSSA LSA (Type 7)

B.

Opaque LSA (Type 11)

C.

Opaque LSA (Type 9)

D.

Opaque LSA (Type 10)

E.

External LSA (Type 5)

 

Correct Answer: D

Explanation:

Type 10 – an area-local “opaque” LSA as defined by RFC2370. Opaque LSAs contain information which should be flooded by other routers even if the router is not able to understand the extended information itself.

Typically type 10 LSAs are used for traffic engineering extensions to OSPF, flooding extra information about links beyond just their metric, such as link bandwidth and color.

 

 

QUESTION 282

A service provider is running a single area OSPFv2 instance in the MPLS network. The OSPF re-convergence time is becoming excessively slow as the service provider MPLS network grows. Which two action can improve network performance without implementing a multi area design? (Choose two).

 

A.

Configure incremental SFP

B.

Reduce type 5 LSAs

C.

Implement Partial Route Computation

D.


Limit number of TVLs

E.

Enable LSA group pacing

 

Correct Answer: AE

 

 

QUESTION 283

Which are the four main functions of the Cisco IOS XR System Manager? (Choose four)

 

A.

performs system monitoring

B.

is the main IOS XR component for device drivers and software installation management

C.

starts, restarts, and terminates processes in response to userconfiguration or RP failover

D.

is responsible for the message-passing “bus” for interprocess communication

E.

acts as a central repository for all process-related information

F.

performs health checks

G.

initiates disaster recovery based on the process health

H.

invokes a dumper to collect a core dump when a process terminates abnormally

 

Correct Answer: CEGH

 

 

QUESTION 284

What is the BGP synchronization rule?

 

A.

BGP should not advertise a route until that route has been learned via an IGP.

B.

Routing information received through an EBGP session is not forwarding to another EBGP neighbor, only to IBGP neighbors.

C.

BGP neighbor peering are established and synchronized using TCP.

D.

BGP should not advertise a route when that route has been learned via an IGP

E.

Routing information received through an IBGP session is not forwarding to another IBGP neighbor, only to EBGP neighbors.

 

Correct Answer: A

 

 

QUESTION 285

While evaluating a new hardware rollout plan before deployment, which standards should you review to ensure that the hardware met certain environmental design guidelines?

 

A.

NAS

B.

COBIT

C.

ITIL®

D.

NEBS

E.

eTOM

 

Correct Answer: D

 

 

QUESTION 286

Due to recent acquisitions, a company’s MPLS infrastructure is growing very quickly. Concerns arise about labeling each and every IP address on the service provider core network. The IP address space is designed as per following:

 

Service provide ip address range is: 10.0.0.0/16

 

All loopback addresses use subnet mask /32

 

10.0.0.0/24 range is used for loopback addresses

 

All other subnet masks used for links are /24 and /25

 

Which command would significantly reduce the label allocations without compromising LDP functionalities?

 

A.

ip prefix-list List1

deny 10.0.0./16 le 20 ge 25

!

mpls Idp label

allocate global prefix-list List1

B.

access-list 1

permit 10.0.0.0 0.0.255.255 mpls Idp

neighbor 10.0.0.1

labels accept 3

C.

mpls Idp labelallocate global host-routes

D.

mpls Idp password required for 10

!

access-list 10 permit 10.0.0.1

access-list 10 permit 10.0.0.2

access-list 10 permit 10.0.0.3

 

Correct Answer: C

 

 

QUESTION 287

What are three main characteristics of mLDP that differ from RSVP-TE? (Choose three.)

 

A.

The LSPs are built from tailend to headend.

B.

The LSPs are built from headend to tailend.

C.

It supports only P2MP LSPs.

D.

It supports both P2MP and MP2MP LSPs.

E.

Signaling is periodic.

F.

No periodic signaling is performed.

 

Correct Answer: ADF

Explanation:

http://www.cisco.com/c/dam/en/us/products/ios-nx-os-software/multicast-label-distribution-protocol-mldp/whitepaper_c11-598929_v1.pdf

 

 

QUESTION 288

In a PE-CE scenario using OSPF as the routing protocol, a down-bit set can be advertised in which OSPF LSA type?

 

A.

type 1 LSA

B.

type 2 LSA

C.

type 3 LSA

D.

type 5 LSA

E.

type 7 LSA

 

Correct Answer: C

 

 

QUESTION 289

Refer to the exhibit. A company has a requirement to provide communication among remote sites via multipoint GRE tunnels. This communication is not working yet. Which is the root cause of this issue?

 

clip_image002

 

A.

The key that is used on the DMVPN tunnel between the spoke and hub ends does not match. This causes the tunnel to fail.

B.

BGP IPv4 multicast address-family is missing between hub and spoke points.

C.

The GRE tunnel is not sourced from a physical interface. The DMVPN traffic does not know where to forward packets.

D.

The NHRP network ID does not match in the hub and spoke configuration c
ausingNHRP negotiations to fail and the mGRE to stay down.

 

Correct Answer: A

 

 

QUESTION 290

Which cisco IOS XR feature define route strategies:

 

Correct Answer: RPL policy

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