Networks
What is a computer Network?
A group of computing devices that are connected together so that they can share data and resources.
Name one difference between Bluetooth and Wi-Fi?
Bluetooth is short range, usually with a room; Wi-Fi may range over a small building to the world at large.
How many individual wires will you find in a networking twisted pair?
Twisted pair cable consists of eight copper wires, twisted in pairs to reduce interference and enclosed in a plastic covering.
What does the P in ISP stand for?
Internet Service Provider
List two business features of the Internet.
(i) Telecommuting
(ii) Telemarketing
(iii) E-Commerce
(iv) Video-Conferencing
What is a mobile network?
A network of communication and computing devices where the last link is over a mobile phone network.
Venues that have broadband Internet access often create public wireless access.
(i) What is the technical term for this public wireless access?
(ii) Name THREE types of venue that often provide public wireless access.
(i) Hotspot
(ii) Coffee shops, Hotels, Open spaces between two or more mobile carriers, Government offices, and Libraries
State the difference between a switch and a router?
A switch joins computer together while a router joins networks together.
What does the word "Protocol" means?
A protocol is a set of rules or an agreed way to exchange or transmit data between devices.
List two applications found on the Internet.
(i) Communication services
(ii) File access and transfer services
(iii) Terminal emulation service
Give TWO reasons why someone on the move might want to join a computer network?
To check the weather, send email, check flight information, access work documents in the clouds, or join a video conference.
What is a wireless network?
A network that uses radio waves instead of physical cables as the transmission medium.
Name three components of a wired network?
(i) Switch
(ii) Router
(iii) Network Interface Card/Adapter
Suggest TWO reasons why an organisation may choose to set up an intranet.
An intranet allows organisations to share information and resources with staff while keeping the data and information secure.
Give TWO examples of a communication service found on the Internet.
(i) Electronic mail
(ii) Electronic discussion forums
(iii) Internet Relay Chat
(iv) Mailing Lists
State ONE similarity and ONE difference between a computer network and a mobile network?
Both a computer network and mobile networks connect communication devices together but a computer network can be wired or wireless while on a mobile network the last leg of transmission is mobile wireless.
What is meant by Transmission Media?
These are the mechanisms by which computing devices are connected together.
Name THREE wired transmission media
(i) Coaxial
(ii) Twisted pair
(iii) Fiber optic
List THREE types of business enterprise that could benefit from setting an extranet.
(i) Travel agents
(ii) Airlines
(iii) Shops and suppliers
(iv) Banks
(v) Credit Card companies
State the difference between a Web Browser and a Search Engine.
Web browser is a software package used for accessing locations on the Internet and for viewing files that were created in the hypertext markup language format. A search engine is a web-based tool that enables users to locate information on the Internet.
Name the type of networks used in the following:- (i) your district government office? (ii) Booking an airline ticket? (iii) Your local dental practice?
(i) Metropolitan Area
(ii) Wide Area
(iii) Local Area
Give ONE similarity and ONE difference between Infrared and Microwave as transmission media
Infrared and microwave are both wireless but infrared is short range (a few metres) and microwave is longer range ( a few kilometres).
Give ONE advantage and ONE disadvantage of a wired network when compared to a wireless network.
Wired networks are more secured and faster than wireless networks. However, a disadvantage of a wired network is that it requires cables to be laid between computers and the network switch.
State the difference between the World Wide Web and the Internet.
The World Wide Web is the platform on which the Internet operates while the Internet is a public, globally accessible, wide area network providing information and communication facilities.
State TWO examples of a Web Browser and TWO examples of a Search Engine.
Microsoft Internet Explorer, Firefox, Google Chrome
Google, Yahoo, MSN Search, Amazon, Bing