20 questions
A computer network is a system of:
two or more computing devices connected to one another
Data transfer and information storage
Sharing devices like scanners
A whole lot of individual machines working on their own
Select 3 reasons for using a network
Increased security - user access to the network is controlled
Data transfer can be controlled
Sharing resources and devices
Centralisation of data
A WLAN covers the same area as a LAN but connects computing devices within a network wirelessly.
true
false
Select 3 instances where a WLAN is better than a LAN
Much more expensive to install than a LAN.
Mobile devices can be moved and stay connected all the time.
Connecting new devices to your network is easier.
Wireless connections are more stable than wired connections
Cables (that are sometimes difficult to install) are kept to a minimum.
Hardware needed to connect to a computer to the internet is:
NIC
Internet Explorer
Communication medium (CAT5 Cabling)
WAP
Servers
Communication medium transfers data and information between computing devices in a network. Communication media include:
Wi-Fi
coaxial cable
UTP
Fibre Optic
Routers
Fibre optic cables consist of very fine strands of glass or plastic fibre; transmitting data via
magnetic pulses
light pulses
electricity
Which one of the following terms refer to the most popular LAN technology
Ethernet
WAN
Internet
Intranet
The computers in Peter's office building are linked so that staff can share files and printers. This type of network is known as .
WAN
GAN
PAN
LAN
Which one of the following terms with regard to a WAN is FALSE?
Most organisations depend on service providers because of their WANs.
It is based on the principle of ADSL.
It is a network within a wider geographical area.
At a university a LAN can for example also use the services of a WAN.
Which one of the following statements with regard to Bluetooth is FALSE?
Files can be transferred between cellphones with this facility.
One Bluetooth device will automatically detect another Bluetooth device in the neighbourhood.
Devices that are between 5 m and 60 m apart can connect.
It uses radio technology.
The term 'bandwidth' refers to .
the amount of data that can be downloaded via radio waves
the maximum amount of data that can be transferred at any time via an Internet connection
the number of minutes you use while online
the method you use to connect to the Internet
Which one of the following is a typical example of a web address?
http:telko@info.uk
alex@intellect.co.za
http://www.eaglewood.co.za
C:/computers.za
Which one of the following e-mail addresses is an example of someone's address who works at an academic/educational institution in Australia?
pwebb@travel.ac.uk
www.academic.au
wpalm@teach.gov.za
mcrown@sydney.edu.au
Which one of the following statements is a good guideline for netiquette?
Type an e-mail message in capital letters.
Often send chain letters to all your e-mail friends.
Create an e-mail message that is distinct, unambiguous and without spelling errors.
Send some of your personal messages to favourite members of a newsgroup.
Which one of the following terms refer to wireless radio communication?
Bluetooth
Bandwidth
GPS
Ethernet
Which one of the following statements on digital communication and social networks is FALSE?
The Internet offers a variety of methods and tools for people to communicate socially and professionally with each other to create online communities.
An advantage of IM (Instant Messaging) is that people can communicate with each other in real time and by means of their keyboards.
Disadvantages in the use of online communication methods are, amongst others, identity theft, spreading of viruses, spam, fraud, etc.
LinkedIn and Facebook are both social networking websites with the same aims and features.
Which one of the following statements on digital communication refers to video conferencing?
Voice data is transferred in data packets and you therefore use the Internet as a 'telephone'.
You type a message on your screen and your friend can read it immediately in real time on his screen.
Audio and video data are transferred from one venue to another via the Internet and appear on the monitor of the receiver so that communication can take place.
You use a wireless device and send a short message of a maximum of 160 characters to another mobile phone or computer.
Which one of the following names/examples does not directly refer to digital communication?
CoolTalk
ECG (electrocardiogram)
Which one of the following statements referring to mobile Internet access is FALSE?
A 3G/4G network is a high speed data network used by suppliers of mobile cellphones for broadband services and Internet connection.
A USB modem or Internet dongle is a device with which you can connect to a 3G/4G network to access the Internet.
3G stands for Third Generation and 4G for Fourth Generation.
A USB modem looks like a flash disk and operates without a SIM card.