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- 1what is the purpose of an nicto allow a node [computer] to connect to and send data across a network
- 2what is a hubA device that connects
nodes together. - 3what is a switchA device that connects nodes together.
An intelligent device that can sends data to the nodes that the data is intended for - 4what is a routera router is a computer whose software and hardware are customised to move data between computer network.
- 5what is a wireless access pointRouters work by sending data between networks [E.G. over the internet]
If the LAN is to connect to the Internet, a Router is needed.
 - 6What is a LANA local-area network (LAN) is a computer network that spans a relatively small area. Most often, a LAN is confined to a single room, building or group of buildings, however, one LAN can be connected to other LANs over any distance via telephone lines and radio waves.
- 7What is a WANA wide area network is a telecommunications network or computer network that extends over a large geographical distance. Wide area networks are often established with leased telecommunication circuits.
- 8What is the internetThe Internet is the global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide.
- 9What 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.
- 10What is the a Modem?A modem is a hardware device that allows a computer to send and receive data over a telephone line or a cable or satellite connection. In the case of transmission over an analog telephone line, which was once the most popular way to access the internet, the modem converts data between analog and digital formats in real time for two-way network communication.
- 11What is an ISP?An Internet service provider 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.
- 12What 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).
- 13What is a URL?Is a URL the same as a domain name? Surprisingly to many, the answer is no. But the terms are used so interchangeably, it’s understandable why people confuse one for the other. But there is a difference.
- 14What is HTTPS and what is it used for?HTTP is the underlying protocol used by the World Wide Web and this protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands.
- 15What are the three different network topologies?bus, star and ring
- 16What 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”.
- 17What are the advantages / disadvantages of a Ring topology?Disadvantages of ring topology. All data being transferred over the network must pass through each workstation on the network, which can make it slower than a star topology. ... The hardware needed to connect each workstation to the network is more expensive than Ethernet cards and hubs/switches.
- 18What are the advantages / disadvantages of a Bus topology?Alternatively referred to as a line topology, a bus topology is a network setup in which each computer and network device are connected to a single cable or backbone. The following sections contain both the advantages and disadvantages of using a bus topology with your devices.
- 19What is encryptionEncryption is used to scramble information so that it can be sent safely without anyone else being able to read it. The information is encrypted with a password or key that is needed to read the information again. ... To read the message you need to know how many places each letter was moved (this is called the key).
- 20What 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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- Karteikarten am Ohne Titel, erstellt von Mehraan Asif am 06/10/2017.
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