Flashcards
Internet and Data Transmission
Cards in this deck (16)
- 1What is serial transmissionSingle bits are sent over one wire
- 2What is parallel transmissionSignals are sent simultaneously over a number of parallel wires
- 3What is skew in parallel transmission?When the signals travelling down parallel wires arrive at the destination at different times
- 4How do we solve the problem of skew?We only use parallel transmission over short distances.
- 5What is an ICAn Integrated circuit is a chip made from semiconductors which assembles transistors and resistors sending data in parallel
- 6Advantages of serial over parallel transmission-Its simpler
-its cheaper
-"crosstalk" creates interference in parallel which can corrupt data
-serial links are more reliable - 7What is simplex transmission?Data travelling in only one direction such as in keyboards
- 8What is Half Duplex data transmissionData can travel both directions but only one direction at a time
- 9What is full duplex transmissionData can travel in both directions at the same time across two cables
- 10Where is full duplex usually used?In fibre optical networking or Internet cables for upload and download
- 11Where is half duplex data transmission usually usedUsed in parallel printer cables: text is sent to a printer, and the printer can send ‘Out of paper’ messages back, but only when the computer has finished sending text
- 12What is Bitratethe rate at which bits are transferred from one location to another
- 13What is Bauda unit of transmission speed equal to the number of times a signal changes state per second. For signals with only two possible states one baud is equivalent to one bit per second.
- 14What is bandwidththe maximum data transfer rate of a network or Internet connection. It measures how much data can be sent over a specific connection in a given amount of time.
- 15What is a Parity Bit?A bit added to a byte that indicates if the byte had an even number value, if an even parity bit or an odd number value if a odd parity bit.
- 16W
Information
- Description
- GCSE Computing Flashcards on Internet and Data Transmission, created by Tom Cavilla on 27/09/2019.
- Created by
- Tom Cavilla
- Views
- 0
- History
-
- Created by Alex G · Sep 20, 2019
- Copied by Tom Cavilla · Sep 27, 2019
- Rating