Network Flashcards
(24 cards)
What is the primary function of serial data cables?
To transmit data one bit at a time along a single data line
Examples include USB (Universal Serial Bus) connections.
What are parallel cables primarily used for?
Connecting internal components with multiple smaller cables
They are often represented as a ribbon cable.
Define serial data transmission.
Bits are sent one after another along the same data line.
How many lines are required for two-way communication in serial data transmission?
Two lines, plus a common signal ground wire.
In parallel data transmission, how many bits are sent simultaneously?
Several bits, such as one byte of data.
What is the problem known as skew in parallel transmission?
Bits travel at slightly different speeds along each wire due to individual wire properties.
What limits the use of parallel transmission?
It can only be used over very short distances of up to about 2m.
True or False: Serial connections are generally faster than parallel connections.
False.
What is the advantage of serial transmission over long distances?
It is reliable over very long distances at very high frequencies.
What is synchronous data transmission?
Data transfers are timed to coincide with an internal clock pulse.
In asynchronous data transmission, what precedes each byte?
A start bit.
What does the parity bit do in data transmission?
It acts as a form of error detection.
Define latency in the context of data transmission.
The time delay between the start of communication and when it is received.
What is a protocol in data communication?
A set of rules relating to communication between devices.
Fill in the blank: The rate at which a signal in a communications channel changes state is called _______.
[Baud rate].
What is the difference between bit rate and baud rate?
Bit rate is the number of bits transmitted per second, while baud rate is the rate of signal changes.
How is bandwidth defined?
A measure of the maximum capacity of a communications channel.
True or False: Bit rate and bandwidth are synonymous.
True.
What happens during baseband transmission?
One signal is transmitted at a time, with bit rate equal to baud rate.
In broadband transmission, how does bit rate relate to baud rate?
Bit rate can be greater than baud rate due to multiple bits transmitted per signal change.
What is the maximum distance for reliable parallel transmission?
About 2 meters.
What is the significance of the start and stop bits in asynchronous transmission?
They mark the beginning and end of each byte.
What does the term ‘skew’ refer to in parallel transmission?
The variation in travel speeds of bits along different wires.
Define the term ‘bit rate’.
The number of bits transmitted in one second over a data link.
