Free Download New Updated Cisco CCIE R&S 400-101 Real Exam Questions and Answers 171-180

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QUESTION 171

Which statement is true about IGMP?

 

A.

Multicast sources send IGMP messages to their first-hop router, which then generates a PIM join message that is then sent to the RP.

B.

Multicast receivers send IGMP messages to their first-hop router, which then forwards the IGMP messages to the RP.

C.

IGMP messages are encapsulated in PIM register messages and sent to the RP.

D.

Multicast receivers send IGMP messages to signal their interest to receive traffic for specific multicast groups.

 

Correct Answer: D

 

 

QUESTION 172

What is a disadvantage of using aggressive mode instead of main mode for ISAKMP/IPsec establishment?

 

A.

It does not use Diffie-Hellman for secret exchange.

B.

It does not support dead peer detection.

C.

It does not support NAT traversal.

D.

It does not hide the identity of the peer.

 

Correct Answer: D

 

 

QUESTION 173

What can PfR passive monitoring mode measure for TCP flows?

 

A.

only delay

B.

delay and packet loss

C.

delay and reachability

D.

delay, packet loss, and throughput

E.

delay, packet loss, throughput, and reachability

 

Correct Answer: E

 

 

QUESTION 174

Which two statements are true about an EVPL? (Choose two.)

 

A.

It has a high degree of transparency.

B.

It does not allow for service multiplexing.

C.

The EVPL service is also referred to as E-line.

D.

It is a point-to-point Ethernet connection between a pair of UNIs.

 

Correct Answer: CD

QUESTION 175

Which two statements are true about OTV? (Choose two.)

 

A.

It relies on flooding to propagate MAC address reachability information.

B.

It uses a full mesh of point-to-multipoint tunnels to prevent head-end replication of multicast traffic.

C.

It can work over any transport that can forward IP packets.

D.

It supports automatic detection of multihoming.

 

Correct Answer: CD

 

 

QUESTION 176

Which two statements are true about RSTP? (Choose two.)

 

A.

By default, RTSP uses a separate TCN BPDU when interoperating with 802.1D switches.

B.

By default, RTSP does not use a separate TCN BPDU when interoperating with 802.1D switches.

C.

If a designated port receives an inferior BPDU, it immediately triggers a reconfiguration.

D.

By default, RTSP uses the topology change TC flag.

E.

If a port receives a superior BPDU, it immediately replies with its own information, and no reconfiguration is triggered.

 

Correct Answer: BD

 

 

QUESTION 177

Refer to the exhibit. Video Source S is sending interactive video traffic to Video Receiver R. Router R1 has multiple routing table entries for destination R. Which load-balancing mechanism on R1 can cause out-of-order video traffic to be received by destination R?

 

clip_image001

 

A.

per-flow load balancing on R1 for destination R

B.

per-source-destination pair load balancing on R1 for destination R

C.

CEF load balancing on R1 for destination R

D.

per-packet load balancing on R1 for destination R

 

Correct Answer: D

 

 

QUESTION 178

Refer to the exhibit. Which two statements are true about the displayed STP state? (Choose two.)

 

clip_image003

 

A.

The STP version configured on the switch is IEEE 802.1w.

B.

Port-channel 1 is flapping and the last flap occurred 1 minute and 17 seconds ago.

C.

The switch does not have PortFast configured on Gi0/15.

D.

BPDUs with the TCN bit set are transmitted over port channel 1.

 

Correct Answer: CD

 

 

QUESTION 179

Refer to the exhibit. A PE router is configured with a policy map that contains the policer shown. The policy map is configured in the inbound direction of an interface facing a CE router. If the PE router receives 12Mb/s of traffic with the CoS value set to 7 on a 100-Mb/s interface from the CE router, what value of MPLS EXP is set when this traffic goes through the policer shown?

 

clip_image005

 

A.

0

B.

6

C.

7

D.

8

 

Correct Answer: B

 

 

 

 

 

 

 

 

 

 

QUESTION 180

DRAG DROP

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Correct Answer:

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