Unit 2.1 IGCSE Data Transmission

What type of transmission is used in walkie-talkies?

• Simplex

• Full Duplex

• Half Duplex

• Complex

Why is parallel data transmission faster than serial data transmission? 

• Because multiple channels are used in parallel data transmission.

• Because multiple bits are sent over a single channel in parallel data transmission.

• Because data might be skewed in serial data transmission slowing the rate of transmission.

• None of the other answers are correct.

What type of transmission is used to transfer data from computer to printer? 

What type of transmission is USB?

• Synchronous parallel transmission

• Asynchronous serial transmission

• Asynchronous parallel transmission

• Synchronous serial transmission

Which of the following correctly represents the data 1101011 if odd parity is used?

• 01101011

• 11101011

• 11010110

• 11101011

In which of the following methods, is an ACKNOWLEDGEMENT sent to the sender for error-checking?

• Automatic Repeat Request

• Checksum

• Echo Check

The types of transmission that devices can use are:

• Serial and Parallel

• Simplex

• Duplex

• Full Duplex

--------- transmission is when multiple bits of data are sent at the same time along different channels in the same cabling

In a half duplex transmission two way communication is possible, it is not possible to transmit in both directions at the same time

• TRUE

• FALSE

Which Transmission device is the newest technology?

• Serial Port

• Parallel Port

• Universal Serial Bus (USB)