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Computing flashcards
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- 1What is a LAN?LAN means Local Area Network. It's a group of computers and associated devices that share a common communication line or wireless link to a server. Typically, a LAN encompasses computers and peripherals connected to a server within a distinct geographic area such as an office or a commercial establishment.
- 2What is the purpose of a Router and what does it do?A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. A data packet is typically forwarded from one router to another router through the networks that constitute an internet work until it reaches its destination node.
- 3What is a network?A network is defined as a group of two or more computer systems linked together. There are many types of computer networks, including the following: local-area networks (LAN's): The computers are geographically close together (that is, in the same building).
- 4What is a NIC?NIC stands for Network Interface Card. The NIC is also referred to as an Ethernet card and network adapter. It is an expansion card that enables a computer to connect to a network; such as a home network
- 5What 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.
- 6What 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.
- 7What advantages and disadvantages does the network bring?Advantages. Site (software) licences are likely to be cheaper than buying several standalone licences. Network users can communicate by email and instant messenger. Security is good - users cannot see other users' files unlike on stand-alone machines.Disadvantages. 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. ... Viruses can spread to other computers throughout a computer network.
- 8What is a WAN?A WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites.
- 9What is HTTPS and what is it used for?Image result for What is HTTPS and what is it used for in computing
HTTP Secure (HTTPS) is an adaptation of the Hypertext Transfer Protocol (HTTP) for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted by Transport Layer Security (TLS), or formerly, its predecessor, Secure Sockets Layer - 10What is encryptionThe translation of data into a secret code. Encryption is the most effective way to achieve data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Unencrypted data is called plain text ; encrypted data is referred to as cipher text.
- 11What is decryption?Decryption is the process of taking encoded or encrypted text or other data and converting it back into text that you or the computer can read and understand. This term could be used to describe a method of un-encrypting the data manually or with un-encrypting the data using the proper codes or keys.
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- Fichas sobre Computing flashcards, creado por Ayesha Ali el 04/10/2017.
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- Ayesha Ali
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