[Free] 2017(Apr) Ensurepass Testking Cisco 100-105 Latest Dumps 41-50

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Interconnecting Cisco Networking Devices Part 1 v3.0 (ICND1)

 

QUESTION 41

Which two options will help to solve the problem of a network that is suffering a broadcast storm? (Choose two.)

 

A.

a bridge

B.

a router

C.

a hub

D.

a Layer 3 switch

E.

an access point

 

Correct Answer: BD

Explanation:

Routers and layer 3 switches will not propagate broadcast traffic beyond the local segment, so the use of these devices is the best method for eliminating broadcast storms.

 

 

QUESTION 42

A switch receives a frame on one of its ports. There is no entry in the MAC address table for the destination MAC address. What will the switch do with the frame?

 

A.

drop the frame

B.

forward it out of all ports except the one that received it

C.

forward it out of all ports

D.

store it until it learns the correct port

 

Correct Answer: B

Explanation:

Understanding this concept is prime for understanding that when switch receives the data frame from the host not having the MAC address already in the MAC table, it will add the MAC address to the source port on the MAC address table and sends the data frame. If the switch already has the MAC address in its table for the destination, it will forward the frame directly to the destination port. If it was not already in its MAC table, then they frame would have been flooded out all ports except for the port that it came from.

 

 

QUESTION 43

Refer to the exhibit. The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two.)

 

clip_image001

 

A.

The switch will not forward a frame with this destination MAC address.

B.

The MAC address of 0000.00aa.aaaa will be added to the MAC Address Table.

C.

The MAC address of ffff.ffff.ffff will be added to the MAC address table.

D.

The frame will be forwarded out of all the active switch ports except for port fa0/0.

E.

The frame will be forwarded out of fa0/0 and fa0/1 only.

F.

The frame will be forwarded out of all the ports on the switch.

 

Correct Answer: BD

Explanation:

If the switch already has the MAC address in its table for the destination, it will forward the frame directly to the destination port. If it was not already in its MAC table, then they frame would have been flooded out all ports except for the port that it came from.

 

 

 

 

QUESTION 44

What is the purpose of flow control?

 

A.

To ensure data is retransmitted if an acknowledgement is not received.

B.

To reassemble segments in the correct order at the destination device.

C.

To provide a means for the receiver to govern the amount of data sent by the sender.

D.

To regulate the size of each segment.

 

Correct Answer: C

Explanation:

Flow control is the management of data flow between computers or devices or between nodes in a network so that the data can be handled at an efficient pace. Too much data arriving before a device can handle it causes data overflow, meaning the data is either lost or must be retransmitted. For serial data transmission locally or in a network, the Xon/Xoff protocol can be used. For modem connections, either Xon/Xoff or CTS/RTS (Clear to Send/Ready to Send) commands can be used to control data flow. In a network, flow control can also be applied by refusing additional device connections until the flow of traffic has subsided.

Reference: http://whatis.techtarget.com/definition/flow-control

 

 

QUESTION 45

Refer to the exhibit. What two things can the technician determine by successfully pinging from this computer to the IP address 172.16.236.1? (Choose two)

 

clip_image002

clip_image004

 

A.

The network card on the computer is functioning correctly.

B.

The default static route on the gateway router is correctly configured.

C.

The correct default gateway IP address is configured on the computer.

D.

The device with the IP address 172.16.236.1 is reachable over the network.

E.

The default gateway at 172.16.236.1 is able to forward packets to the internet.

 

Correct Answer: AD

Explanation:

The source and destination addresses are on the same network therefore, a default gateway is not necessary for communication between these two addresses.

 

 

QUESTION 46

What does a host on an Ethernet network do when it is creating a frame and it does not have the destination address?

 

A.

Drops the frame

B.

Sends out a Layer 3 broadcast message

C.

Sends a message to the router requesting the address

D.

Sends out an ARP request with the destination IP address

 

Correct Answer: D

Explanation:

In this case, it will send out an ARP request for MAC address of the destination IP (assuming it doesn’t already have it in its table) and then address it to the destination’s MAC address.

 

 

 

 

 

 

 

QUESTION 47

Refer to the exhibit. The ports that are shown are the only active ports on the switch. The MAC address table is shown in its entirety. The Ethernet frame that is shown arrives at the switch. What two operations will the switch perform when it receives this frame? (Choose two.)

 

clip_image006

 

A.

The MAC address of 0000.00aa.aaaa will b
e added to the MAC address table.

B.

The MAC address of 0000.00dd.dddd will be added to the MAC address table.

C.

The frame will be forwarded out of port fa0/3 only.

D.

The frame will be forwarded out of fa0/1, fa0/2, and fa0/3.

E.

The frame will be forwarded out of all the active ports.

 

Correct Answer: AD

Explanation:

If the switch already has the MAC address in its table for the destination, it will forward the frame directly to the destination port. If it was not already in its MAC table, then they frame would have been flooded out all ports except for the port that it came from. It will also add the MAC address of the source device to its MAC address table

 

 

QUESTION 48

How many simultaneous Telnet sessions does a Cisco router support by default?

< b> 

A.

1

B.

2

C.

3

D.

4

E.

5

F.

6

 

Correct Answer: E

Explanation:

By default, Cisco routers support virtual terminal interfaces 0-4 (5 total) which are used for telnet sessions.

 

 

QUESTION 49

Refer to the exhibit. How many collision domains are shown?

 

clip_image007

 

A.

one

B.

two

C.

three

D.

four

E.

six

F.

twelve

 

Correct Answer: B

Explanation:

Hubs create single collision and broadcast domains, so in this case there will be a single collision domain for each of the two hubs.

 

 

QUESTION 50

Refer to the exhibit. All devices attached to the network are shown. How many collision domains are present in this network?

 

clip_image008

 

A.

2

B.

3

C.

6

D.

9

E.

15

 

Correct Answer: E

Explanation:

A switch uses a separate collision domain for each port so there are a total of 9 for each device shown. In addition to this, the switch to switch connections (3) are a separate collision domain. Finally, we add the switch to router connections (2) and the router to router connection (1) for a total of 15.

 

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