[Free] 2017(Apr) Ensurepass Examcollection Cisco 400-201 Latest Dumps 31-40

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CCIE Service Provider Written Exam v4.1

QUESTION 31

An engineer is deploying RTBH. What is necessary routing constraint required for successful implementation?

 

A.

The trigger device must have an iBGP session with all the clusters/route reflectors in the autonomous system.

B.

The trigger device must redistribute the static route pointing to a null interface into the IGP process.

C.

The no ip reachables command must be issued on the PE router interface under attack.

D.

The attacker’s destination IP address must be routed to a null interface.

E.

The eBGP sessions need to set the next-hop attribute value to the trigger device loopback interface.

 

Correct Answer: A

Explanation:

http://www.cisco.com/web/about/security/intelligence/ipv6_rtbh.html

 

 

QUESTION 32

Which two flexible service mapping features that are used on the ES40 line card can classify traffic into different service instances, in order to consume fewer VLANs? (Choose two.)

 

A.

CoS

B.

DSCP

C.

IP precedence

D.

MPLS experimental bit

E.

ToS

F.

EtherType

 

Correct Answer: AF

Explanation:

http://www.cisco.com/c/en/us/td/docs/routers/7600/install_config/ES40_config_guide/es40_sw_config/es40_chap7.html#pgfId-1500091

 

 

QUESTION 33

Customers connecting to a Service Provider for Internet access are intending to implement redundant peering. The design requirements call for preferring a primary link for both ingress and egress traffic. Secondary links should be used only during primary outages. What two BGP deployment options will accomplish this design goal? (Choose two.)

 

A.

On the router handling the secondary link, advertise routes with a MED value of 0.

B.

On the router handling the primary link, set the weight for all incoming routes to be a value of 0.

C.

On the router handling the secondary link, advertise all routes with a longer AS-PATH value.

D.

On the router handling the primary link, advertise all routes with a longer AS-PATH value.

E.

On the router handling the secondary link, set the local preference for all incoming routes to be a value of 0.

 

Correct Answer: CE

 

 

QUESTION 34

Refer to the exhibit. Which attached circuit interface shown uses VC Type 4?

 

clip_image002

 

A.

Gi8/0/1

B.

AT1/0

C.

Se5/0

D.

ATM2/0

E.

GJ4/0.1

 

Correct Answer: E

 

 

QUESTION 35

What are two advantages of Cisco IOS XR Software over Cisco IOS Software? (Choose two.)

 

A.

a configuration that is grouped by interface

B.

a configuration that is grouped by process

C.

one-stage configuration

D.

a monolithic OS

E.

a two-stage configuration

 

Correct Answer: BE

 

 

QUESTION 36

Refer to the exhibit. Which statement is true about this AS filter accomplishes?

 

clip_image004

 

A.

It filters incoming BGP update with any AS number matching “5.5”, but not 515,525.535 etc this only in an AS_SET.

B.

It filters incoming BGP updates with an AS number starting with the digit 5 and ending with the digit 5, and this only in an AS_PATH.

C.

It filters incoming BGP updates with an AS number starting with the digit 5 and ending with the digit 5 and this only in an AS_SET.

D.

It allows any AS number with the statement * ** and this only in an AS_PATH.

 

Correct Answer: A

 

 

QUESTION 37

Refer to the exhibit. MPLS VPN service has been provisioned for a customer by using inter-AS MPLS Option C. It is possible to redistribute ISP1 and ISP2 received loopback addresses into the local IGP. How many labels are associated with packet forwarding between the ASBRs?

 

clip_image006

A.

0

B.

1

C.

2

D.

3

E.

4

 

Correct Answer: C

 

 

QUESTION 38

In which state can BGP peers exchange Update messages?

 

A.

OpenConfirm

B.

OpenSent

C.

Active

D.

Idle

E.

Established

 

Correct Answer: E

 

 

QUESTION 39

Refer to the exhibit. An SP core is running MPLS with OSPF as the IGP used for Loopback propagation. LDP Synchronization is enabled per the given configuration. What will the traffic flow behavior be after a temporary outage event on PE1 Eth0/0?

 

clip_image007

 

A.

Permanently through PE1 -> P2 -> PE4 due to lowest path metric.

B.

Initially through PE1 -> P1 -> PE4, then a few seconds later, it will be over PE1 -> P2 -> PE4.

C.

Permanently through PE1 -> P1 -> PE4 due to lowest path metric.

D.

Initially through PE1 -> P2 -> PE4, then a few seconds later, it will be over PE1 -> P1 -> PE4

Correct Answer: B

 

 

QUESTION 40

Refer to the exhibit. A customer with two sites is running RIP as a CE-PE routing protocol. These two sites are connected through Layer 3 VPN services. Each of these CE routers cannot ping the LAN IP address of the other router. Which action resolves this issue?

 

clip_image009

 

A.

On PE2 under RIP VRF ABC address family, add the redistribute bgp 100 metric 5 command.

B.

On PE1 under RIP VRF ABC address family, add the network 10.10.13.0 command.

C.

On both PEs under BGP VRF ABC address family, add the bgp bestpath igp-metric ignore command.

D.

On PE1 under RIP VRF ABC address family, add the no auto-summary command.

E.

On PE2 under BGP VRF ABC address family, add the bgp redistribute- internalcommand.

 

Correct Answer: AE

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