Networks Flashcards
Define LAN full term and what it is
Local Area Network
Covers a small geographical area located on a single site
Advantages of using LAN
Sharing files is easier - network users access the same files
You can share the same hardware on a LAN
Internet connection can be shared between every device connected to the LAN
Can install and update software on all computers at once
Define WAN full term and what it is
Wide Area Network
Connects LANs that are in different geographical locations
Explain why WANs are expensive to set up
Need to hire infrastructure from telecom companies
Describe the factors that can affect the performance of Networks
Greater the bandwidth, the better the network can perform
Too many users may cause congestion and slow network
Wired connections are generally faster and more reliable than wireless
Choice of hardware and network topology
Define Bandwidth
Amount of data than can be transferred in a given time
Name 3 things wireless performance depends on
Range of the device, amount of interference from other devices and physical obstructions
Define NIC and what it does
Network Interface Controller
Internal piece of hardware that allows a device to connect to a network
Difference between switch and router
Switch connects devices on a LAN
Switches receive data from one device and transmit this data to the device the network with the correct MAC address
Routers are responsible for transmitting data between networks
Routers are used in homes to connect the LAN to the internet
Two reasons why Wi-fi signal may be poor
Physical obstructions between WAP and device
May be a long distance from device and WAP
Define virtual network
Software based network which is created by partitioning a physical networks bandwidth to create a separate network
Purpose of Cloud Computing
Purpose of URL
Translates websites domain name into IP address which allows the web server to located on the internet
Purpose of DNS servers
Translates a websites domain name into an IP address
Advantages of Cloud computing
(4 marks)
Users can access files from any connected device
Easy to increase how much storage is available
No need to buy expensive hardware to store data
No need to pay IT specialists to manage hardware