Network Basics
What is a computer network?
A group of two or more computers or devices connected to share data and resources.
Name one type of network topology.
Star, Bus, or Ring
Name one type of wired transmission media.
Twisted pair, coaxial cable, or fibre optic cable.
What does downloading mean?
Receiving data from another computer or the internet.
What is an intranet?
A private network used inside an organization.
What is data communication?
The transmission of data and information between two or more computers.
In which network topology are all computers connected to a central hub?
Star network
Which type of cable transmits data using pulses of light?
Fibre optic cable.
What does uploading mean?
Sending data from your computer to another computer or the internet.
Who can access an intranet?
Only members of the organization (employees or staff).
Give TWO examples of things we use that require data communication.
Email, video conferencing, social media, GPS, online services (any two).
Which topology forms a closed loop where the last computer connects back to the first?
Ring topology.
Which cable is commonly used for Ethernet connections in networks?
Twisted pair cable (Ethernet cable).
What term describes the amount of data that can be transmitted in a given time?
Bandwidth
What is an extranet?
A network that allows authorized outsiders limited access to an intranet.
What type of network connects computers in a small area such as a school or office building?
LAN (Local Area Network).
What happens to a star network if the hub fails?
The entire network stops working.
What type of transmission media uses radio waves instead of cables?
Wireless media.
Which type of channel transmits the fastest speeds of data: narrowband, voiceband, or broadband?
Broadband
Give one example of how a company might use an extranet.
Customers logging in to check bills or make payments.
What type of network connects computers across different cities or countries?
WAN (Wide Area Network).
Which topology is cheapest but can split into two parts if the main cable breaks?
Bus topology.
Name TWO wireless technologies used in networking.
Wi-Fi, Bluetooth, infrared, microwave, satellite (any two).
What type of computer is NOT connected to a network?
A stand-alone computer.
What communication mode sends data directly between two devices only?
Point-to-point communication.