Flashcards
newtwork
Flashcards do conjunto (30)
- 1What is a computer network?two or more computers connected together to share information and resources [this can include phisical or wireless connections or both
- 2Describe a LANa lan is a local area network and it works in a very small area
- 3Describe a WANa wan is a wide area network which works in a relatively large area
- 4What are the advantages of a computer network?Resource sharing and connecting to printers and scanners and you can share files
- 5What are the disadvantages of a computer network?hacking viruses and firewall
- 6What devices are needed to produce a LAN?network Adapter
Network Medium Cable Connectors Power Supply. Hub/Switch/Router. Network Software - 7What is the purpose of a NIC?the nic converts the data signals from the node into data signals that can be transferred across the network
- 8What is the purpose of a Router?routers work by sending the data between the networks such as over the internet
- 9What is the purpose of a Hub?connects to multiple computers or other network devices together
- 10What is the purpose of a Switch?is a computer networking device that connects devices together on a computer network by using packet switching to recieve process and foward data to the destanation device
- 11What is the purpose of a WAP?is a computing a wireless access point or more generally just access point is a network hard ware device that allows a wi-fi device to connect to a wired network
- 12What is the difference between a Hub and a Switch?the switch uses packet switching to receive process and forward data to the destination device and a hub doesn't
- 13What is the Internet?a global computer network providing a variety of information and communication facilities,
- 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?it converts digital signals produced by your computer into analog signals sent over the telephone
- 16What is the purpose of an ISP?digital technology that provides multiple channels to stream data from the internet to you
- 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,
- 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." ... 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
- 21What are the three different network topologies?Bus Topology. ...
Ring Topology. ...
Tree Topology - 22What are the advantages / disadvantages of a Star topology?disadvantages :requires more cable length than a linear topology. If the hub, switch, or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the hubs
- 23What are the advantages of a Ring topology?Advantages of ring topology. All data flows in one direction, reducing the chance of packet collisions. A network server is not needed to control network connectivity between each workstation. Data can transfer between workstations at high speeds
- 24What are the 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
- 25What are the advantages of a Bus topology?Advantages of bus topology
It works well when you have a small network.
Easiest network topology for connecting computers or peripherals in a linear fashion.
Requires less cable length than a star topology. - 26What are the disadvantages of a Bus topology?Difficult to identify the problems if the whole network goes down.
It can be hard to troubleshoot individual device issues.
Not great for large networks.
Terminators are required for both ends of the main cable.
Additional devices slow the network down.
If a main cable is damaged, the network fails or splits into two - 27List examples of data that need to be kept secureyour bank acount password personal details
- 28What 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
- 29What is encryptionthe process of converting information or data into a code, especially to prevent unauthorized access.
- 30What is decryption?Decryption is the process of transforming data that has been rendered unreadable through encryption back to its unencrypted form
Informações
- Descrição
- FlashCards sobre newtwork, criado por Tohib Hussain em 04-12-2017.
- Criado por
- Tohib Hussain · dez 2017
- Atualizado
- 11 dez 2017
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