The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?

Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

A

Network collisions occur

B

Repeaters cannot increase the signal strength sufficiently

C

Cable terminators do not reflect the signal properly

D

Cable terminators do not absorb the signal properly

E

"Line echo" occurs due to the impedance of the cable

If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

A

Discard it and send an error message back to the originating host

B

Flood the network with the frame

C

Add the source address and port to the MAC address table and forward the frame out the destination port

D

Add the destination to the MAC address table and then forward the frame

You are adding a new server to your network. The network uses TCP/IP. The new server will provide users with dial-up access to network resources. The data link communications protocol you choose for dial-up access must allow you to provide secure authentication. Which protocol should you choose?

A

PPP

B

DLC

C

In the System option in Control Panel, select the setting that allows users to log on locally

D

In the System option in Control Panel, set the user environment variables to allow Maria to log on locally

E

None of the above

Ethernet and Token-Ring are the two most commonly used network architectures in the world. Jim has heard of the different topologies for networks and wants to choose the architecture that will provide him with the most options. Which of the following would that be? Choose the most correct answer.

A

Token-Ring because it currently can run at both 4Mbps and 16Mbps. This means that it can be used in any topology

B

Ethernet, because it is cabled using fiber-optic cable

C

Token-Ring, because it uses a MAU

D

Ethernet, because it can be set up with most topologies and can use multiple transfer speeds

E

Neither Token-Ring nor Ethernet is the proper choice. Only ARCnet can be used in all topologies

Before a disk drive can access any sector record, a computer program has to provide the record's disk address. What information does this address specify?

A

Track number

B

Sector number

C

Surface number

D

All of the above

E

None of the above

Once card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack,Queen and King only)?

A

1/13

B

3/13

C

3/52

D

9/52

John draws a card from a pack of cards. What is the probability that the card drawn is a card of black suit?

A

1/2

B

1/4

C

1/3

D

1/13

IP address থেকে MAC Address জানার protocol কোনটি?

A

RIP

B

BGP

C

ARP

D

TCP

You have configured a Group Policy Object (GPO) for the marketing oranization unit (OU) to prevent users from accessing My Network Places and from running System in Control Panel. You want the Managers Domain Local Group to be able to access My Network Places, but you still want to prevent them from running System in Control Panel. What should you do?

A

Add the Managers group to the access control list of the GPO. Disable the permission of the managers group to read and apply the Group Policy

B

Add the Managers group to the access control list of the GPO. Deny the permission of the managers group to read and apply the Group Policy

C

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Deny the Authenticated Users group permission to read and apply th

D

Create a second GPO in the OU. Add the Managers group to the access control list. Allow the managers group to apply the Group Policy. Disable the Authenticated Users group permission to read and apply

E

None of above

Your company uses both Ethernet and token-ring LAN's in the same building. Users need access to resources and the ability to transmit data between the LAN's. Which device would you use to enable communications between dissimilar LAN's that use different protocols?

A

bridge

B

router

C

gateway

D

repeater

E

None of the above

The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?

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