Flashcards
Networks
Cards in this deck (17)
- 1What is a computer network?A computer network is two or more computers connected together.
- 2Describe a LAN.A LAN is a Local Area Network
- 3Describe a WAN.A WAN is a Wide Area Network
- 4What are the disadvantages of a computer network?Site licences are likely to be cheaper than buying several standalone licences. Network users can communicate by email and instant messenger. Security is good because users cannot see other users' files unlike on stand-alone machines.
- 5What devices are needed to produce a LAN?Network Adaptor. A computer needs a network adaptor to connect to a network. ...
Network Medium. Wired networks need cable. ...
Cable Connectors. ...
Power Supply. ...
Hub/Switch/Router. ...
Network Software. - 6What is the purpose of a NIC?The NIC contains the electronic circuitry required to communicate using a wired connection or a wireless connection . A network interface card is also known as a network interface controller, network adaptor, or Local Area Network (LAN) adaptor.
- 7What is the purpose of a Router?A router uses a LAN to connect to the internet.
- 8What is the purpose of a Hub?A hub, also called a network hub, is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN. The hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.
- 9What is the purpose of a Switch?The basic function that any switch is supposed to perform is to receive information from any source connected to it and dispatch that information to the appropriate destination only. This thing differentiates switches from hubs. Hub gets the information and forwards that to every other device in the network.
- 10What is the purpose of a WAP?A wireless access point (WAP) is a hardware device or configured node on a local area network (LAN) that allows wireless capable devices and wired networks to connect through a wireless standard, including Wi-Fi or Bluetooth.
- 11What is the difference between a Hub and a Switch?There are three main devices that work to connect one computer to another computer. A network hub, switch, and router can all perform this function. It can sometimes be confusing when trying to figure out what device is currently being used on a computer network, without knowing what each device does.
- 12What is the Internet?The internet is a global network of computers that works much like the postal system, only at sub-second speeds. Just as the postal service enables people to send one another envelopes containing messages, the internet enables computers to send one another small packets of digital data.
- 13What is the World Wide Web?The World Wide Web is an information space where documents and other web resources are identified by Uniform Resource Locators, interlinked by hypertext links, and can be accessed via the Internet.
- 14What is the purpose of a Modem?Modem stands for Modulator/Demodulate. A modem converts digital signals generated by the computer into analogue signals which can be transmitted over a telephone or cable line and transforms incoming analogy signals into their digital equivalents.
- 15What is the purpose of an ISP?An Internet service provider (ISP) is an organisation that provides services accessing and using the Internet. Internet service providers may be organised in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.
- 16What is an IP address?An IP address is a unique string of numbers separated by full stops that identifies each computer using the Internet Protocol to communicate over a network.
- 17What does HTTP stand for?
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- Flashcards on Networks , created by Aaminah Ahmed on 04/12/2017.
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- Aaminah Ahmed
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