Networks Flashcards
ASCII
American Standard Code for Information Interchange
the type of code that tells your keys what is being typed, offering 128 characters, with one bit per character
Application Software
enables the user to perform a specific task, for example a word processer allows storage of text and simple images and web browser displays web pages
Attenuation
the loss of signal strength when transmitting signals
Batch Processing
where large amounts of information are processed all at once
Bridge
a computer networking device that creates a single aggregate network from multiple communication networks or network segments
Brouter
does the work of the bridge and router
Buffer
a temporary memory area, which holds the data for the output hardware
Character
single character, eg a s d f g h j k l ; 1 5 6
Character Set
a defined list of characters recognised by computer hardware and software
Connectivity
methods for connecting devices to each other in order to transfer data, including cabling and wireless
Data
a set of raw facts or figures with no apparent reason
Device Drivers
manages the connection with a peripheral device, handles the different requests between a computer and a device, puts a device into sleep mode if it is idle for a specified time, can control multiple peripherals using the same protocol
Disk Defragmentation
a process the reduces the amount of fragmentation on a hard drive
Domain Name System
a distributed database that matches IP addresses to computer system resources, for example, to give a domain name google instead of 173.194.34.191
Domain Space Hierarchical Structure
a way of representing the structure of URLs
Dynamic Host Configuration Protocol Server
a server that allocates IP addresses
EBCDIC
Extended Binary Coded Decimal Interchange Code
a method of character encoding that uses 8 bits instead of 7 bits like ASCII, and so is less efficient and isn’t used as much
Fibre Optic Cables
cables made of many optical fibres in plastic casing, transferring data signals in forms of light
Full Duplex
allows more than one person to transmit data at one time, unlike half duplex
Gateway
a piece of networking hardware used in telecommunications networks that allows data to follow from one discreet network to another
Half Duplex
same as walky-talkies, allows only one person to transmit data at a single time, despite all people bieng able to transmit data
Hub
node that broadcasts to every computer or ethernet-based device connected to it
Information
data which has been processed and given meaning
Integer
whole number