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WorksheetsIGCSE CS: Ch.2 Data transmission & error detection intro
Total questions: 15
Worksheet time: 10mins
Which of these best describes a data packet?
A device that helps data to move between different networks
A character represented in binary numbers
A type of network on the Internet
A small unit of data that is transmitted over a network
Which of these are contained in a packet header?
The IP address of the packet's receiver
The IP address of the packet's sender
A packet number which allows data to be reassembled
Some kind of error check
Ketchup
A telephone conversation is an example of ______________ transmission.
Half Duplex
Full Duplex
Simplex
None of these
A type of data flow where the direction of transmission is just one flow.
Simplex
Half - Duflex
Full - Duplex
None of the above
A type of data flow where the direction of transmission is just one at a time.
Simplex
Half - Duflex
Full - Duplex
None of the above
A type of data flow where the direction of transmission is simultaneous.
Simplex
Half - Duflex
Full - Duplex
None of the above
A type of data transmission in which bits are sent one signal at a time over a single wire
Serial transmission
Parallel transmission
Signals (bits) are sent simultaneously over a number of parallel wires
Serial Transmission
Parallel Transmission
Which of these best describes a parity check?
A bit added to a byte of data to ensure it has the right parity
A method to check if data has been transferred correctly
An extra byte of data sent at the end of a parity block
Whether a number is even (like 2, 4, 6...) or odd (like 1, 3, 5...)
Which of these best describes a parity bit?
A bit added to a byte of data to ensure it has the right parity
A method to check if data has been transferred correctly
An extra byte of data sent at the end of a parity block
Whether a number is even (like 2, 4, 6...) or odd (like 1, 3, 5...)
Which of these best describes an automatic repeat request (ARQ)?
A method of checking that data was transmitted correctly by immediately sending received data back to the sender
A method to check if data has been transferred correctly by adding parity bits
A method of checking transmitted data for errors by requesting data to be re-sent if too much time passes
An additional digit appended to a number to check if the entered number is error-free
Which of these best describes an echo check?
A method of checking that data was transmitted correctly by immediately sending received data back to the sender
A method to check if data has been transferred correctly by adding parity bits
A method of checking transmitted data for errors by requesting data to be re-sent if too much time passes
A number calculated based on the block of data being sent, and sent after each data block
Which of these best describes a check digit?
A method of checking that data was transmitted correctly by immediately sending received data back to the sender
A method to check if data has been transferred correctly by adding parity bits
A method of checking transmitted data for errors by requesting data to be re-sent if too much time passes
An additional digit appended to a number to check if the entered number is error-free
Which of these best describes a checksum?
A method of checking transmitted data for errors by requesting data to be re-sent if too much time passes
A method to check if data has been transferred correctly by adding parity bits
A number calculated based on the block of data being sent, and sent after each data block
An additional digit appended to a number to check if the entered number is error-free
A method of data transmission, in which a message is broken up into a number of packets, which are each sent independently.
Packet switching
Data transmission
Half duplex serial
Simplex parallel
