Flashcards
computing
Cards in this deck (27)
- 1what does LAN stand for ?LAN stands for local area network
- 2what does WAN stand for ?WAN stands for wide area network
- 3what is a LAN ?a computer network that spans a relatively small area
- 4what is a WAN ?A computer network that spans a relatively large geographical area
- 5examples of LAN...supermarket tills
school network - 6examples of WAN...mobile phone network
Playstation network - 7what is a network ?a set of computers put together in order to share resources
- 8advantages of wireless network...Increased efficiency
Access available
Flexibility
Cost saving
Coverage
security - 9disadvantages of wireless network...Requires greater resources, file saving is normally slow, weaker security systems, viruses can easily be spread.
Get hacked easily - 10advantages of wired networks...Clear connection of internet.
Increase of security - 11disadvantages of wired networks...Lacks mobility, wires easily damaged
- 12what is a DNS ?it is a domain name server
matches IP address to the domain name - 13what is an IP address ?it is an internet protocol
long name name written in binary - 14what is encryption and why do we encrypt ?we encrypt normal writing to encryption writing to make a sentence difficult to read
it does not stop the information to be intercepted. - 15what is a router ?connects devices within a network by forwarding data packets between them.
- 16what is a hub ?is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN
- 17what is the internet ?is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN
- 18what is a caesar cypher ?a caesar cypher is a key in which each letter in the plaintext is 'shifted' a certain number of places down the alphabet.
- 19what is a topology ?refers to the layout of a computer network. ... Physical topology means the placement of the elements of the network, including the location of the devices or the layout of the cables.
- 20what is a bus topology ?a bus topology is where all devices are connected to one cable. they are cheap and easy to install. they are unreliable as if the main cable breaks then all other devices are effected
- 21what is a ring topology ?a ring topology
- 22what is the internet?its the network of networks
- 23what is an ISP?it is the internet surface provider and provides internet service for companies
- 24what is the purpose of the network interface card?provides a dedicated network to computers
- 25what is the difference between a hub and a switch?switch is more efficient than a hub
- 26what is the WWW ?its the world wide web and is used all around the world
- 27—
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- Flashcards on computing , created by Habiba Hussain on 09/03/2020.
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- Habiba Hussain
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