Flashcards
Untitled
Cards in this deck (14)
- 1what is a computer network?a group of computers that have been physically or logically connected together
- 2what is a lan?A local area network, is a computer network that interconnects computers within a limited area.
- 3what is wan?A wide area network is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking
- 4what are the advantages of a computer network?File sharing - you can easily share data between different users, or access it remotely if you keep it on other connected devices.
Resource sharing - using network-connected peripheral devices like printers, scanners and copiers, or sharing software between multiple users, saves money. - 5what are the disadvantages of a computer network?It requires a certain wealth to join a computer network
- 6what devices are needed to produce a lan?To set up a LAN, you will need: A network switch - or a router. An ethernet cable, plus extra ones for every device you want to connect via cable. A computer.
- 7what are the purposes of a nic?A computer uses a network interface card (NIC) to become part of a network. The NIC contains the electronic circuitry required to communicate using a wired connection
- 8What is the purpose of a Router?router is a switching device for networks, which is able to route network packets, based on their addresses, to other networks or devices
- 9What is the purpose of a Hub?A hub, also called a network hub, is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN. The hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.
- 10what is the purpose of a switch?a switch is designed to make sure that data can be transferred between devices on a network.A switch will use MAC addresse to make sure that data packets are only sent to the device that needs the data
- 11explain the role of the domain name server?it is a database of URLs and their matching IP addres.The service converts the URL requests into IP addresses for computers to understand.
- 12how is URL constructed?in words
- 13list examples of data that need to be kept securepasswords
personal details
bank details - 14what are the advantages and disadvantages of a bus topology?advantages:
easy installation,cheap,single cable,easy to add/remove devices.
disadvantages:
unreliable,if the main cable fails the whole network goes down
Information
- Description
- Flashcards on Untitled, created by Amelia Qureshi on 09/03/2020.
- Created by
- Amelia Qureshi
- Views
- 0
- Rating