How many bus lines are used in serial transmission?

• 1

• 2

• 3

• 4

What can happen as we increase the speed of parallel transmisson?

• Crosstalk

• Inteference

• Skewing

• Packet loss

Why is parallel data transmission generally only used over short distances?

• It is too expensive over longer distance

• It is too complicated over longer distance

• There is a higher chance of error over longer distance

• There is a lower chance of delivery over longer distance

A standard baby monitor would be an example of what?

• Simplex Data Transmission

• Half Duplex

• Full Duplex / Duplex

A 2 way police radio would be an example of what?

• Simplex Data Transmission

• Half Duplex Data Transmission

• Duplex Data Transmission

Which of the following is an example of full duplex data transmission?

• USB 1.0

• USB 2.0

• USB 3.0

• USB 4.0

Which error checking method involves counting the number of 1s to find whether it is even or odd?

• Check digit

• Checksum

• Echo Check

• Parity Check

Would the byte 10001111 pass an even parity check?

• Yes

• No

Which is a disadvantage of parity checking?

• We cannot locate where the error is

• It takes a long time to calculate

• It can only be done once

• It is expensive to design

An echo check involves...

• ...counting the number of odd digits in a sequence

• ...requesting a copy of sent data form the receiver and comparing it with the original

• ...calculating the last number

• ...waiting for a timeout