[Free] 2017(Apr) Ensurepass Examcollection Cisco 400-201 Latest Dumps 91-100

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CCIE Service Provider Written Exam v4.1

QUESTION 91

Two OSPF neighborrouters are stuck in the EXSTART state. After a while, the neighborship goes down. A network engineer is debugging the issue when both routers show the OSPF log message “too many retransmissions.” What is the possible root cause?

 

A.

OSPF area mismatch

B.

OSPF hello-interval mismatch

C.

interface MTU mismatch

D.

interface network type mismatch

 

Correct Answer: C

 

 

QUESTION 92

A service provider is using QoS to manage customer traffic over the MPLS backbone. Which three statements about the behavior of each MPLS QoS mode based on QoS policy in theservice provider core are true? (Choose three.)

 

A.

Uniform mode does not change the original CE IP packet markings.

B.

Uniform mode changes the original CE IP packet markings.

C.

Pipe mode does not change the original CE IP packet markings.

D.

Pipe mode changes the original CE IP packet markings.

E.

Short-pipe mode does not change the original CE IP packet markings.

F.

Short-pipe mode changes the original CE IP packet markings.

 

Correct Answer: BCE

 

 

QUESTION 93

Refer to the exhibit. R3 cannot install a route to R1-R2 subnet 2001:1:155:12::/64. Which action resolves this issue?

 

clip_image002

 

A.

Add the redistribute ospf 1 include-connected command under the ipv6 router eigrp 10 process.

B.

For the OSPF process, add the no shutdown command.

C.

For prefix-list OSPF_INTO_EIGRP seq 20, replace the prefix with 2001:155:1:12::/64.

D.

For route-map OSPF_INTO_EIGRP, add the set metric 1000 1 255 1 1500 command.

 

Correct Answer: A

Explanation:

http://www.ciscopress.com/articles/article.asp?p=2273507&seqNum=8

https://supportforums.cisco.com/document/12110191/understand-include-connected-keyword-use-ipv6-redistribution

 

 

QUESTION 94

Refer to the exhibit. Two MPLS TE tunnels are configured with a total bandwidth guarantee of 100 Mbps. However, Tunnel 1 has a requirement to have one-fifth of this total bandwidth. Which two configurations accomplish this goal? (Choose two.)

 

clip_image003

 

A.

Configure tunnel mpls traffic-eng bandwidth 20000 under the Tunnel 1 interface.

B.

Configure bandwidth 20000 under the Tunnel 1 interface.

C.

Configure tunnel mpls traffic-eng bandwidth 80000 under the Tunnel 2 interface.

D.

Configure bandwidth 80 Mbps under physical interfaces in the path PE1-P2-PE2.

E.

Configure bandwidth 20 Mbps under physical interfaces in the path PE1-P1-PE2

F.

Configure bandwidth 80000 under the Tunnel 2 interface.

 

Correct Answer: AC

 

QUESTION 95

Refer to the exhibit. The prefix 10.1.1.64/28 should be advertised to the PE router, yet the prefix is not being received by the PE. Which configuration should be applied on CE in order to fix this issue?

 

clip_image005

 

A.

ip prefix-list ROUTES_TO_SP seq 1 permit 10.1.1.64/28

B.

router bgp 65000no network 10.1.1.64 mask 255.255.255.240 network 10.1.1.128 mask 255.255.255.128

C.

ip prefix-list ROUTES_TO_SP permit 10.1.1.64/28

D.

router bgp 65000no network 10.1.1.64 mask 255.255.255.240 network 10.1.1.0 mask 255.255.255.0

 

Correct Answer: A

 

 

QUESTION 96

Two Service Providers are beginning a merger between AS boundaries to provide MPLS- enabled services between their networks. Customers are using both Service Providers for services and, under certain circumstances; there are requirements to extend Layer 2 VPN circuits between each provider. The providers are in the process of completing the technical merger. However, the MPLS is not supported between the providers. Which action allows MPLS Layer 2 VPN circuits to be built over the inter-AS link?

 

A.

Create a GRE tunnel with the mpls ip command between ASBRs.

B.

Create Layer 2 VPN peerings between PE routers from each provider.

C.

Create a VPNv4 peering between ASBRs to advertise labels between each provider.

D.

Create a sham link between ASBR routers to enable a superbackbone peering for Layer 2 VPN signaling.

 

Correct Answer: A

Explanation:

https://ccdewiki.wordpress.com/2013/07/02/inter-as-l2vpn-mpls-solutions/

 

QUESTION 97

DRAG DROP

Drag and drop the 802-1ad characteristic on the left onto the port type on the right. Not all options are used.

 

clip_image007

 

Correct Answer:

clip_image009

 

 

QUESTION 98

A service provider has requirement to prevent spoofing attack by verify the reachability source address in a packet that forwarded into network, which method should be used:

 

A.

CoPP

B.

iACL

C.

uRPF

D.

RTBH

 

Correct Answer: D

 

 

 

QUESTION 99

What is the encapsulation mode for MPLS running on Ethernet?

 

A.

Transparent mode.

B.

Frame mode

C.

Channel mode

D.

Packet mode.

E.

Tunnel mode.

 

Correct Answer: B

 

 

QUESTION 100

MPLS Service Providers use Route Distinguishers and Route Targets as methods to control routing for customer VRFs. Which two statements are true about Route Distinguishers and Route Targets? (Choose two.)

 

A.

Route Targets are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.

B.

Route Distinguishers are used by PE routers by exporting and importing routes into a local VRF.

C.

Route Targets are used by PE routers to define how to import and export prefixes into a local VRF database.

D.

Route Targets are extended communities that are used by MP-BGP to identify routes as they are advertised to neighbor PE routers.

E.

Route Distinguishers are values that are used by a PE router to uniquely identify a VRF within its local MP-BGP VPNv4 table.

 

Correct Answer: CE

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