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Flashcards

Untitled

Olivia McCausland English 23 cards

Cards in this deck (23)

  1. 1what is a computer network?two or more computers connected together to share information
  2. 2what is a LAN?It is a local network. Relatively small, It is owned by organisation
  3. 3what is a WAN?Cover a large geographical are. Use cables, telephone lines , satellites and radio waves to connect
  4. 4What are the advantages of a computer network?Another advantage of computer networks is the data sharing. All the data such as documents, file, accounts information, reports multi media eg can be shared with the help computer networks.
  5. 5What are the disadvantages of a computer network?The disadvantages include lack of independence by client users, security concerns, and threats by malware and viruses
  6. 6What devices are needed to produce a LAN?router, switch, wires
  7. 7What is the purpose of a NIC?A network interface card (NIC) is a computer circuit board or card that is installed in a computer so that it can be connected to a network.
  8. 8What is the purpose of a Router?A router is a networking device that forwards data packets between computer networks.
  9. 9What is the purpose of a Hub?The function of a hub is to allow many computers to transfer communication between each other. A hub can be found within a company setting to allow the computers, within the company, to transmit data to each other.
  10. 10What is the purpose of a Switch?a switch is a device that channels incoming data from any of multiple input ports to the specific output port that will take the data toward its intended destination. In the traditional circuit-switched telephone network, one or more switches are used to set up a dedicated though temporary connection or circuit for an exchange between two or more parties.
  11. 11What 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.
    WAP (Wireless Application Protocol) is a specification for a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access, including e-mail, the World Wide Web, newsgroups, and instant messaging. While Internet access has been possible in the past, different manufacturers have used different technologies. In the future, devices and service systems that use WAP will be able to interoperate
  12. 12What is the difference between a Hub and a Switch?What's the difference between a Ethernet hub, a switch, and a router? Ethernet hubs, switches, and routers are all devices that let you connect one or more computers to other computers, networked devices, or even other networks
  13. 13What is the Internet?a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols
  14. 14What is the World Wide Web?an information system on the Internet which allows documents to be connected to other documents by hypertext links, enabling the user to search for information by moving from one document to another
  15. 15What is the purpose of a Modem?WHAT IS THE PURPOSE OF A MODEM? Modem stands for MOdulator/DEModulator. A modem converts digital signals generated by the computer into analog signals which can be transmitted over a telephone or cable line and transforms incoming analog signals into their digital equivalents
  16. 16What is the purpose of an ISP?An Internet service provider (ISP) is an organization that provides services accessing and using the Internet. An Internet service provider (ISP) is an organization that provides services accessing and using the Internet. Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.Internet service providers may be organized in various forms, such as commercial, community-owned, non-profit, or otherwise privately owned.
  17. 17What is an IP address?a unique string of numbers separated by full stops that identifies each computer using the Internet Protocol to communicate over a network
  18. 18What does HTTP stand for?HTTPS stands for Hypertext Transfer Protocol Secure, and instead of acting as its own application layer protocol, it uses separate protocols called SSL (Secure Sockets Layer) and TLS (Transport Layer Security)
  19. 19What is a URL?the address of a World Wide Web page
  20. 20How is a URL constructed?URL can be thought of as the "address" of a web page and is sometimes referred to informally as a "web address." ... A URL is made up of several parts. The first part is the protocol, which tells the web browser what sort of server it will be talking to in order to fetch the URL
  21. 21What are the three different network topologies?Bus Topology. ...
    Ring Topology. ...
    Tree Topology.
  22. 22What are the advantages / disadvantages of a Star topology?Star Topology: Advantages and Disadvantages. In Star topology, all the components of network are connected to the central device called “hub” which may be a hub, a router or a switch. ... So it can be said that every computer is indirectly connected to every other node by the help of “hub”
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Flashcards on Untitled, created by Olivia McCausland on 01/12/2017.
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