Flashcards
Topic 5: Communication & the internet (part 1)
Cards in this deck (7)
- 1What is a network?A network refers to a group of computers or other devices connected together
- 2State 3 reasons why many perfer to connect devices in networks- Resource sharing: Networked devices are able to share resources and services with each other such as storage capacity and software applications which improves efficiency and reduce costs
- Communication and collaboration: Networks facilitate communication between devices through standards such as emails and video calls
- Data and information access: Networks provide access to shared online data allowing any user to retreive and share information more easily - 3Define a PANA personal area network is designed for personal use only. It connects personal users' devices via bluetooth or wi-fi
E.g.: Connecting speaker to phone via bluetooth - 4Define a WANA wide area network covers a large geographical area. A WAN is usually made of multiple LANs. The most widely know WAN is the internet
- 5Define LANA local area network connects devices over a smaller geographical area such as a school or office building
E.g.: A network used by 1 hospital - 6State 4 advantages of computer networks- Networks enable quick file exchange
- Enhanced connectivity as users are able to stay connected regardless of where they are
- They allow for internet connections to be shared
- Security measures may be implemented to protect important files and data - 7State 4 disadvantages of computer networks- Setting up and maintaining certain large computer netowrks can be expensive (specialists may be required and costly hardware may need to be purchased)
- In centralized servers, the failure of 1 crutial device may cause the whole network to crash (there may be a single point of failure)
- Networks pose high risks to security breaches since viruses or malware can propogate easily between connected devices
- Lack of device independancy makes it a challange for users to use networked devices as they want
Information
- Description
- LOs covered: 5.1.1 (understand networks) 5.1.2 (types of networks)
- Created by
- Stacey R
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