DATA EXCHANGE PACKET SWITCHING

Question 1

What is packet switching?

Answer 1

The process of data being broken into “packets” before being sent through a network and reassembled at the other end.

Question 2

What are the ERROR CONTROL BITS in the method of packet switching?

Answer 2

This checks that the packets have been resembled correctly - it checks for errors

Question 3

What is the DATA PAYLOAD in the method of packet switching?

Answer 3

The data

Question 4

What is the SOURCE ADDRESS in the method of packet switching?

Answer 4

Where the data has come from

Question 5

What is the DESTINATION ADDRESS in the method of packet switching?

Answer 5

Where the data is going

Question 6

What is packet identification in the method of packet switching?

Answer 6

This identifies the packets and knows how to resemble them

Question 7

What is VoIP & packet switching?

Answer 7

-VoIP uses CODECS at either end to encode and decode data.
-The senders computer records a message using a webcam or microphone.
- The message is converted into digital data which is broken into packets.
-The received computer receives the packets and decodes the data.

Question 8

Advantages of packet switching?

Answer 8

• Sends data across a network efficiently.
• It means big files which could otherwise clog up the network, can be sent whole
• Allows efficient movement of data through a network

Question 9

Disadvantages of packet switching?

Answer 9

• If one or more packets are lost or corrupted during transmission, the whole file will not be received correctly