Which best describes serial transmission of data?

Single bits are sent along a single wire in sequence

Which best describes synchronous transmission of data?

Each interface is synchronised by a common clock

Which is a purpose of the start bit?

Alerts the receiver that data is to be transmitted

Which best describes asynchronous transmission of data?

Data is sent without a common clock

Which best describes baud rate?

The number changes in voltage per second

Which statement is true?

The bit rate can be higher than the baud rate

Which best describes bit rate?

The number of bits that can be transferred per second

Which best describes parallel transmission of data?

Bits are sent down several wires simultaneously

Which best describes latency?

The time delay between data being sent and received

Which can be included in a protocol?

All the others, Error detection and correction methods, The speed of data transmission (bit rate), The structure of data frames

Which is a purpose of the stop bit?

Alerts the receiver that all data has been transmitted

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Duplicate of Communication

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Communications basics AQA GCE Computer Science

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Questions 12

Answers

1
Which best describes serial transmission of data?
Data travels in one direction only
Single bits are sent along a single wire in sequence
Data travels in both directions, but not at the same time
Bits are sent down several wires simultaneously
2
Which best describes synchronous transmission of data?
Data is sent without a common clock
Each interface is synchronised by a common clock
Data travels along a single wire in one direction
Data travels along a single wire in both directions
3
In what type of transmission are start and stop bits used?
Simplex
Asynchronous
Synchronous
Half-duplex
4
Which is a purpose of the start bit?
Alerts the receiver that data is to be transmitted
To signify the bit rate of data transmission
To signify the baud rate of data transmission
To agree communication protocols
5
Which best describes asynchronous transmission of data?
Data is sent without a common clock
Data travels along a single wire in one direction
Data travels along a single wire in both directions
Each interface is synchronised by a common clock
6
Which best describes baud rate?
The number changes in voltage per second
Rules of communication
The time delay between data being sent and received
The number of bits that can be transferred per second
7
Which statement is true?
The bit rate can be higher than the baud rate
The baud rate can be higher than the bit rate
The bit rate and baud rate can never be equal
The bit rate and baud rate are always equal
8
Which best describes bit rate?
The time delay between data being sent and received
The number changes in voltage per second
Rules of communication
The number of bits that can be transferred per second
9
Which best describes parallel transmission of data?
Single bits are sent along a single wire in sequence
Bits are sent down several wires simultaneously
Data travels in one direction only
Data travels in both directions, but not at the same time
10
Which best describes latency?
The number of bits that can be transferred per second
The number changes in voltage per second
Rules of communication
The time delay between data being sent and received
11
Which can be included in a protocol?
All the others
Error detection and correction methods
The speed of data transmission (bit rate)
The structure of data frames
12
Which is a purpose of the stop bit?
Alerts the receiver that data is to be transmitted
Alerts the receiver that all data has been transmitted
To agree communication protocols
To signify the baud rate of data transmission

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