Which best describes parallel transmission of data?

Bits are sent down several wires simultaneously

Which best describes serial transmission of data?

Single bits are sent along a single wire in sequence

Which is a purpose of the start bit?

Alerts the receiver that data is to be transmitted

Which best describes bit rate?

The number of bits that can be transferred per second

Which is a purpose of the stop bit?

Alerts the receiver that all data has been transmitted

Which best describes synchronous transmission of data?

Each interface is synchronised by a common clock

Which best describes baud rate?

The number changes in voltage per second

Which best describes latency?

The time delay between data being sent and received

Which statement is true?

The bit rate can be higher than the baud rate

Which best describes asynchronous transmission of data?

Data is sent without a common clock

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Communication

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Communications basics AQA GCE Computer Science

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Questions 16

Answers

1
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 both directions, but not at the same time
Data travels in one direction only
2
What needs to be added if even parity is used?
1
0
5
3
3
Which best describes serial transmission of data?
Bits are sent down several wires simultaneously
Single bits are sent along a single wire in sequence
Data travels in one direction only
Data travels in both directions, but not at the same time
4
Which is a purpose of the start bit?
To signify the bit rate of data transmission
To signify the baud rate of data transmission
To agree communication protocols
Alerts the receiver that data is to be transmitted
5
Which best describes bit rate?
The time delay between data being sent and received
The number of bits that can be transferred per second
Rules of communication
The number changes in voltage per second
6
In what type of transmission are start and stop bits used?
Simplex
Synchronous
Half-duplex
Asynchronous
7
If even parity has been used, has this data been received correctly?
Yes
Depends on the clock
Not possible to tell
No
8
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
9
Which best describes synchronous transmission of data?
Data is sent without a common clock
Data travels along a single wire in one direction
Each interface is synchronised by a common clock
Data travels along a single wire in both directions
10
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
11
What needs to be added if odd parity is used?
1
3
0
5
12
Which can be included in a protocol?
The speed of data transmission (bit rate)
The structure of data frames
Error detection and correction methods
All the others
13
If odd parity has been used, has this data been received correctly?
Not possible to tell
Yes
No
Depends on the clock
14
Which best describes latency?
The number changes in voltage per second
The time delay between data being sent and received
Rules of communication
The number of bits that can be transferred per second
15
Which statement is true?
The bit rate can be higher than the baud rate
The bit rate and baud rate are always equal
The bit rate and baud rate can never be equal
The baud rate can be higher than the bit rate
16
Which best describes asynchronous transmission of data?
Data travels along a single wire in one direction
Each interface is synchronised by a common clock
Data travels along a single wire in both directions
Data is sent without a common clock

Communication Flashcards | StudBud