8390308
Description
Flashcards by Cameron Taylor, updated more than 1 year ago
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Created by Cameron Taylor
over 7 years ago
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| Question | Answer |
| What is a Interface Card and what is it used for? (Communication devices) | It is a electronic printed circuit that fits into a computers motherboard and is used to allow the computer to be recognised by the network and determines the speed of data transmission. |
| What is a Modem (Modulator-demodulator)? (Individual users) | It is a device that plugs into a computer and is connected to a telephone line which provides access to a wide area network (WAN). It converts digital signal into analogue for the transmission of the telephone then converts analogue into digital for oncoming messages. |
| What is a broadband modem? | It connects to a computer using a telephone line and uses a Asymmetric Digital Subscriber Line (ADSL) to achieve faster transition rates. It links a computer to allow internet access to the user. |
| What is a wireless broadband modem? | It is a wireless router that allows devices to connect to the internet wireless if the device has a wireless adapter. This translates the digital form to radio form and transmitted to an antenna. |
| What is a microfilter? | It is installed to a phone extension and is used to stop the broadband interference. |
| Large Organisations | Lots of hardware is required to link computers to a network and large organisations use lots of servers. Hardware such as, hard drives can be used to store databases and files that are shared online between users. |
| What are the different Data transfer media cables? | Computers can be connected to the internet wirelessly or with a copper cable. 1.) Ethernet cable (coaxial - e.g. tv aerial). 2.) UTP (Unshielded Twisted Pair) . 3.) Fibre Optic - faster than copper cabling but more expensive. |
| What are the different types of Networking Software? | 1.) Protocol - A standard of rules that defines how communication is used between computers. 2.) Modem Driver - A program that controls the broadband modem. 3.) Browser - Allows the user to view web pages using HTML (Hyper Text Markup Language). 4.) ISP - (Internet Service Provider) Provides a package for users which allows access to the internet and emails. |
| What is a Standard? | Standards - It is a common way of doing something e.g. storing data in a format (JPEG, MP3, MP4 etc) and it allows the data to be interpreted correctly. |
| What is a Procedure? | Procedures - They need to be carried out to allow security on a network. E.g. (Virus scanner - checks for viruses, Spyware - Gathers information about the user through the internet). |
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