Network connections

Usage of which of the following cables, ensures a faster Ethernet?

• Coaxial cable

• Optical fibre

• Unshielded twisted pair

• Speed of Ethernet is not related to type of cable

What is the disadvantage of Ethernet?

• More switches are required in case of large number of devices

• Limited length of cabling

• Data collisions

• All of the above

How is data collision avoided in CSMA/CD?

• By sensing the channel before sending data

• By sensing the receiver before sending data

• By sensing the other senders before sending data

What is done when length of cabling is not enough in an Ethernet network?

• Repeaters are used

• Switches are used

• The number of users are limited

• All of the above

Which of the following is NOT present in header of a data packet?

• Receiver’s and sender’s IP address

• Error correction data

• Length of packet

• Packet number

Which of the following is present in trailer of a data packet?

• Payload

• End of packet marker

• Packet number

• All of the above

Which of the following type of routing is used in traditional telephone networks?

• Circuit switching

• Packet switching

Which of the following type of routing is a connectionless mode of communication?

• Circuit switching

• Packet switching

What is the disadvantage of circuit switching?

• Does not allow other data packets to be transmitted during a connection session.

• In case of circuit failure, the communication is disrupted.

• All of the above

• None of the above

What is the significance of packet number field in a data packet?

• For transmitting the data packets faster.

• To make sure that message is error-free.

• To rearrange the data packets in order at receiver’s end.

• None of the above