Free Download New Updated Cisco CCIE R&S 400-101 Real Exam Questions and Answers 1-10

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QUESTION 1

Refer to the exhibit. If you change the Spanning Tree Protocol from pvst to rapid-pvst, what is the effect on the interface Fa0/1 port state?

 

clip_image001

 

A.

It transitions to the listening state, and then the forwarding state.

B.

It transitions to the learning state and then the forwarding state.

C.

It transitions to the blocking state, then the learning state, and then the forwarding state.

D.

It transitions to the blocking state and then the forwarding state.

 

Correct Answer: C

 

 

QUESTION 2

Refer to the exhibit. Which configuration is missing that would enable SSH access on a router that is running Cisco IOS XE Software?

 

clip_image002

 

A.

int Gig0/0/0

management-interface

B.

class-map ssh-class

match access-group protect-ssh

policy-map control-plane-in

class ssh-class

police 80000 conform transmit exceed drop

control-plane

service-policy input control-plane-in

C.

control-plane host

management-interface GigabitEthernet0/0/0 allow ssh

D.

interface Gig0/0/0

ip access-group protect-ssh in

 

Correct Answer: C

 

 

QUESTION 3

Which two options are causes of out-of-order packets? (Choose two.)

 

A.

a routing loop

B.

a router in the packet flow path that is intermittently dropping packets

C.

high latency

D.

packets in a flow traversing multiple paths through the network

E.

some packets in a flow being process-switched and others being interrupt-switched on a transit router

 

Correct Answer: DE

 

 

QUESTION 4

A TCP/IP host is able to transmit small amounts of data (typically less than 1500 bytes), but attempts to transmit larger amounts of data hang and then time out. What is the cause of this problem?

 

A.

A link is flapping between two intermediate devices.

B.

The processor of an intermediate router is averaging 90 percent utilization.

C.

A port on the switch that is connected to the TCP/IP host is duplicating traffic and sending it to a port that has a sniffer attached.

D.

There is a PMTUD failure in the network path.

 

Correct Answer: D

 

 

QUESTION 5

Refer to the exhibit. ICMP Echo requests from host A are not reaching the intended destination on host B.What is the problem?

clip_image004

 

A.

The ICMP payload is malformed.

B.

The ICMP Identifier (BE) is invalid.

C.

The negotiation of the connection failed.

D.

The packet is dropped at the next hop.

E.

The link is congested.

 

Correct Answer: D

 

 

QUESTION 6

Refer to the exhibit. Which statement is true?

 

clip_image006

 

A.

It is impossible for the destination interface to equal the source interface.

B.

NAT on a stick is performed on interface Et0/0.

C.

There is a potential routing loop.

D.

This output represents a UDP flow or a TCP flow.

 

Correct Answer: C

 

 

QUESTION 7

Which three conditions can cause excessive unicast flooding? (Choose three.)

 

A.

Asymmetric routing

B.

Repeated TCNs

C.

The use of HSRP

D.

Frames sent to FFFF.FFFF.FFFF

E.

MAC forwarding table overflow

F.

The use of Unicast Reverse Path Forwarding

 

Correct Answer: ABE

 

 

QUESTION 8

Which congestion-avoidance or congestion-management technique can cause global synchronization?

 

A.

Tail drop

B.

Random early detection

C.

Weighted random early detection

D.

Weighted fair queuing

 

Correct Answer: A

 

 

QUESTION 9

Which two options are reasons for TCP starvation? (Choose two.)

 

A.

The use of tail drop

B.

The use of WRED

C.

Mixing TCP and UDP traffic in the same traffic class

D.

The use of TCP congestion control

 

Correct Answer: CD

 

 

QUESTION 10

Which type of port would have root guard enabled on it?

 

A.

A root port

B.

An alternate port

C.

A blocked port

D.

A designated port

 

Correct Answer: D

 

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