Flashcards

Communications & Networking (FAQs)

lhburton23 Computing A2 Inglês 8 flashcards

Flashcards do conjunto (8)

1Where is serial data transmission used and why? (3 marks)It is used for long-distance communication.
Only needs one signal pathway each way.
The signal is not susceptible to skew.
2Where is parallel data transmission used and why? (2 marks)It is used over short distances.
It is susceptible to skew.
3Explain the role of the ready/busy signal and the strobe signal. (2 marks)The ready/busy signal is used to tell the transmitter when the receiver is ready to receive data. The strobe signal is used by the transmitter to tell the receiver to read the bits from the data wires.
4Explain how the bit rate can be higher than the baud rate. (1 mark)Each signal change represents more than one bit of data.
5What is the relationship between bit rate and bandwidth. (1 mark)The higher the bandwidth the higher the bit rate that can be transmitted.
6Explain what a start bit, stop bit and a parity bit do. (3 marks)The start bit signals to the receiver that the data has arrived and is normally a zero.
The stop bit signals to the receiver to deal with the received bits and is normally a one.
The parity bit is either a one or zero depending on the parity chosen and the data bits.
7When are baseband systems used and why? (2 marks)They are used over short distances.
They offer high performance at low cost.
8When are broadband systems used and why? (2 marks)They are used for long-distance communication.
They can allow two or more data streams at the same time.

Descrição: A2 Computing (COMP 3) FlashCards sobre Communications & Networking (FAQs), criado por lhburton23 em 07-05-2014.
Criado por: lhburton23
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