Flashcards
Networks
Cards in this deck (21)
- 1What is a computer network?A group of two or more computing devices connected via a form of communications technology.
- 2Describe a LANA local-area network (LAN) is a computer network that spans a relatively small area
- 3Describe a WANA computer network that spans a relatively large geographical area
- 4What are the advantages of a computer network?Sharing devices such as printers saves money.
Site (software) licences are likely to be cheaper than buying several standalone licences.
Files can easily be shared between users.
Network users can communicate by email and instant messenger.
Security is good - users cannot see other users' files unlike on stand-alone machines. - 5What are the disadvantages of a computer network?Purchasing the network cabling and file servers can be expensive.
Managing a large network is complicated, requires training and a network manager usually needs to be employed.
If the file server breaks down the files on the file server become inaccessible. Email might still work if it is on a separate server. The computers can still be used but are isolated.
Viruses can spread to other computers throughout a computer network.
There is a danger of hacking, particularly with wide area networks. Security procedures are needed to prevent such abuse, eg a firewall. - 6What devices are needed to produce a LAN?Network Adapter. A computer needs a network adapter to connect to a network. ...
Network Medium. Wired networks need cable. ... - 7What is the purpose of a NIC?The NIC contains the electronic circuitry required to communicate using a wired connection (e.g., Ethernet) or a wireless connection (e.g., WiFi). A network interface card is also known as a network interface
- 8What is the purpose of a Router?The main purpose of a router is to connect multiple networks and forward packets destined either for its own networks or other networks.
- 9What is the purpose of a Hub?A hub, also called a network hub, is a common connection point for devices in a network
- 10What 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.
- 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.
- 12What is the difference between a Hub and a Switch?What's the difference between a Ethernet hub, a switch, and a router?
- 13What is the Internet?a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
- 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.
- 15What is the purpose of a Modem?Modem stands for MOdulator/DEModulator.
- 16What is the purpose of an ISP?An Internet service provider (ISP) is an organization that provides services accessing and using the Internet.
- 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.
- 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).
- 19What is a URL?the address of a World Wide Web page
- 20How is a URL constructed?A URL can be thought of as the "address" of a web page and is sometimes referred to informally as a "web address.
- 21What are the three different network topologies?Bus Topology. ...
Ring Topology. ...
Tree Topology.
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- Flashcards on Networks, created by Faizaan Akmal on 01/12/2017.
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- Faizaan Akmal
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