[Free] 2017(Apr) Ensurepass Examcollection Cisco 400-201 Latest Dumps 291-300

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CCIE Service Provider Written Exam v4.1

QUESTION 291

Which statements are correct for forwarding traffic into MPLS TE tunnels? (Choose 3)

 

A.

Autoroute causes the tunnel to be treated as a directly connected link to the head-end.

B.

Autoroute causes the TE head-end to establish IGP adjacency with the tail-end over the tunnel.

C.

Forwarding adjacency makes the TE head-end node advertise the Tunnel LSP into the IGP.

D.

Forwarding adjacency supports unequal cost load balancing over multiple TE tunnels.

 

Correct Answer: ACD

 

 

QUESTION 292

The show ip ospf database external command displays information about which OSPF LSA type?

 

A.

LSA type 1

B.

LSA type 2

C.

LSA type 7

D.

LSA type 3

E.

LSA type 9

F.

LSA type 5

 

Correct Answer: F

 

 

QUESTION 293

A service provider has a requirement to deliver WAN gateways functionality to multi-tenant, provider-hosted clouds. Which Cisco platform meets this requirement?

 

A.

Cisco ASR 1000 series

B.

Cisco CRS series

C.

Cisco CSR1000v

D.

Cisco ASR 9000 series

E.

Cisco NX-OS

 

Correct Answer: C

 

 

 

QUESTION 294

Refer to the exhibit. R2 and R3 cannot install IS-IS IPv6 routes. What is the root cause?

 

clip_image001

 

A.

R2 is missing the metric-style wide command under the IS-IS process.

B.

R3 is missing the multi-topology transition command under the IS-IS address-family IPv6 process.

C.

R2 is missing the multi-topology command under the IS-IS address-family IPv6 process.

D.

R3 is missing the metric-style wide command under the IS-IS process.

 

Correct Answer: B

 

 

QUESTION 295

The following MPP configuration is applied on RA router:

 

RP/0/RSP0/CPU0:RA#sh running- config control-planecontrol-plane

 

management-planeinband

 

interface TenGigE 0/0/0/0

 

allow SSH peeraddress ipv4 5.0.0.0/8

 

Which two pieces of information are correct in regards to management traffic on RA router? (Choose two)

 

A.

SNMP traps going out on TenGigE 0/0/0/0 interface are dropped.

B.

SNMP polling coming through TenGigE 0/0/0/0 interface aredropped.

C.

Telnet connections coming through MgmtEth0/RSP0/CPU0/0 interface are accepted.

D.

SSH connections coming through TenGigE 0/0/0/0 interface from 5.5.5.5 host are accepted.

E.

TACACS traffic going through TenGigE 0/0/0/0 interface are dropped.

 

Correct Answer: BD

 

 

QUESTION 296

Which protocol provides an alternative to the STP, which provides a way to control network loops, handle link failure, and improve convergence time and can coexist with STP?

 

A.

E-TREE

B.

IEEE 802.1ah

C.

REP

D.

Flex Links

E.

PBB-EVPN

 

Correct Answer: C

Explanation:

http://www.cisco.com/c/en/us/support/docs/lan-switching/ethernet/116384-technote-rep-00.html

 

Why REP?

REP is a protocol used in order to replace the Spanning Tree Protocol (STP) in some specific L
ayer 2 network designs. The most current STP specification is Multiple Spanning Trees (MST), defined in 802.1Q-2005. Users who want an alternative to MST have these legitimate concerns:

STP considers a bridged domain as a whole. As a result, a local failure is recovered if you change the state of an arbitrarily remote link. The apparent unpredictability of STP is only mitigated if you segment the bridged domain in small, independent pieces. Unfortunately, this is complex, if not impossible, to achieve without the removal of some key features from the Spanning Tree (like preventing loops in all scenarios).

 

STP convergence might seem slow for service providers who expect recovery times of 50 milliseconds (ms), which common in circuit-switching technologies. This slowness is not caused by the protocol itself; the platforms require optimization in order to run STP in a more efficient way. In the meantime, there need to be new solutions that work around platform limitations.

 

The MST load-balancing configuration is not flexible. In order for MST to achieve instance load-balancing, all the bridges must be part of the same region. Regions are defined by user configuration, and there is no way to modify the MST configuration on a switch without the introducion of some reconvergence in the network. This could be worked around by careful pre-configuration, and to a limited extent, by the use of other protocols such as VLAN Trunk Protocol (VTP) v3.

 

 

QUESTION 297

RIPv2 differs from RIPvl in which three things? (Choose three).

 

A.

it uses multicast address 224.0.0.10, instead of broadcast.

B.

it uses multicast address 224.0.0.9, instead of broadcast.

C.

it can use either multicast or broadcast addresses,instead of just broadcast.

D.

it sends incremental updates,instead of periodic updates.

E.

itis classless, instead of classfull

F.

it supports authentication, and RIPvl does not

 

Correct Answer: BEF

 

QUESTION 298

Which is the main characteristic of LTE architecture compared to other mobile architectures?

 

A.

Provides supports to deploy Layer 3 MPLS VPN model, where other mobile architectures do not support.

B.

Offers node redundancy with the static route configured on the IP NodeB using the HSRP/VRRP virtual ip address.

C.

Provides a simpler, less hierarchical model with the capability of simplistically distributing the core gateways.

D.

Introduces a hierarchical model with connection-oriented service requirements and one- to-one relationships.

 

Correct Answer: C

 

 

QUESTION 299

Refer to the exhibit. Which VLAN interface does untagged traffic pass through?

 

clip_image002

 

A.

1

B.

2

C.

3

D.

4

 

Correct Answer: D

 

 

 

QUESTION 300

In IOT Infrastructure, which two option considered Low-power and Lossy Networks? (Choose 2)

 

A.

Routers


B.

Sensors

C.

Controllers

D.

Nodes

E.

Access points

 

Correct Answer: BC

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