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WorksheetsChap 2.1 - 2.4 (L) Revision
Total questions: 20
Worksheet time: 11mins
A network is a collection of computers and devices connected together often wirelessly, via _________ and ________
communications devices; transmission media
hardware; software
data; information
communications; transmission
Hardware capable of transferring item (signal, data, information, instruction) from computers and devices to transmission media and vice versa.
Transmission media
Communication device
Client/Server
Peer to Peer
A device that provides a central point for cables in a network.
Wireless Access Points
Router
Hubs and Switches
Network Card
A network card, sometimes called a __________
Network Interface Board
Network Graphic Card
Network Access Point
Network Interface Card
Three types of digital modems are
Cable modems
Dial-Up Modems
Digital Subscriber Line (DSL)
Integrated Services Digital Network (ISDN)
Use wire, cable, and other tangible materials to send communications signals.
Wireless transmission media
Physical / Wired transmission media
Consist a single copper wire surrounded by three layers.
Twisted-Pair Cable
Coaxial Cable
Fiber-Optic Cable
Example usage for Twisted-Pair Cable
Computer lab
ASTRO
UNIFI
Navigation system that consists of one or more earth-based receivers that accept and analyse signal sent by satellites in order to determine the receiver geographic location.
Microwaves
Communications Satellite
Global Positioning System (GPS)
Broadcast Radio
People can communicate efficiently and easy via email, Internet messaging, chat room, blogs, wikis, online social network, video call, online meeting, VoIP, and more.
Sharing Hardware
Transferring Fund
Facilitating communications
Sharing Software
If the file server breaks down the files on the file server become inaccessible. The computers can still be used but are isolated.
What is the disadvantage of network based on the situation given?
Purchasing Hardware
Virus Spread
Hacking
Accessibility
Client/Server
Peer-to-Peer
Client/Server
Peer-to-Peer
What is Advantages of Peer-to-Peer? (Tick more than 1 answer)
easy to set up
scaled up to many services
less expensive
control the access and resources
What are the Disadvantages Client/Server? (Tick more than 1)
More expensive
No centralized to manage and control the access of data
Users have to use separate passwords on each computer in the network.
All the computers connected to it become unavailable to use when it crashed
LAN
WAN
LAN
WAN
The advantages of LAN (Tick more than 1)
Easy to share devices
Low cost to setup
Easy to share data
The scale of sharing is larger
List 2 advantages of internet
Social networking
e-Commerce
Health risk
Privacy
"When a computer is disposed of, its waste releases toxic, mercury and harmful flame retardants"
Which category the situation's above match the advantages of internet?
Health Risk
Environmental Issue
Virus threat
Privacy
