Latest Cisco CCIE 400-101 Real Exam Download 151-160

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QUESTION 151

Refer to the exhibit. All switches have default bridge priorities, and originate BPDUs with MAC addresses as indicated. The numbers shown are STP link metrics. Which two ports are in blocking state after STP converges? (Choose two.)

 

clip_image001

 

A.

the port on switch SWD that connects to switch SWE

B.

the port on switch SWF that connects to switch SWG

C.

the port on switch SWD that connects to switch SWC

D.

the port on switch SWB that connects to switch SWD

 

Answer: CD

 

 

QUESTION 152

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.

 

Answer: D

 

 

QUESTION 153

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.

 

Answer: D

 

 

QUESTION 154

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

 

Answer: E

 

 

QUESTION 155

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.

 

Answer: CD

 

 

QUESTION 156

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.

 

Answer: CD

 

 

QUESTION 157

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.

 

Answer: BD

 

 

QUESTION 158

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_image002

 

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

 

Answer: D

 

 

QUESTION 159

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

 

 

clip_image004

 

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.

 

Answer: CD

 

 

QUESTION 160

Which two mechanisms provide Cisco IOS XE Software with control plane and data plane separation? (Choose two.)

 

A.

Forwarding and Feature Manager

B.

Forwarding Engine Driver

C.

Forwarding Performance Management

D.

Forwarding Information Base

 

Answer: AB

 

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