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WorksheetsUNIT 3- DATA COMMUNICATION
Total questions: 20
Worksheet time: 7mins
What is a Local Area Network (LAN)?
A type of wireless network only
A network that covers a large area
A group of linked computers in small space
A network that connects multiple cities
Which of the following is a characteristic of Wide Area Networks (WANs)?
They are limited to a single building
They use telephone lines or mobile systems for connection
They are always wireless
They cannot include LANs
In a star network system, how are computers connected?
Each computer is connected to a central server
All computers are connected in a loop
They are connected through a central cable
Each computer connects to every other computer directly
What is the main advantage of a mesh network?
If one connection breaks, data can use other connections
It is the easiest to set up
It requires less hardware
It is always faster than other networks
What role do servers play in a client-server system?
They connect computers in a network
They store data and serve websites
They are the devices that request data
They are always mobile devices
What technology allows devices to read car registration numbers from photographs?
Wi-Fi
Bluetooth
Optical Character Recognition (OCR)
GPS
What happens if the accelerometer in the device detects a fall?
It sends a message to the control center
It automatically shuts down
It starts recording video
It sends a message to the user
How do customized devices help traffic wardens?
They allow for manual data entry
They are used for communication with the public
They can take photographs and tag them with location and time
They connect to other traffic wardens
What is one of the main benefits of keeping data electronically?
It requires more physical storage space
It allows for easier data retrieval
It increases record keeping costs
It is more difficult to access
What is the purpose of a client program in a client-server system?
To store data
To request data from the server
To connect multiple servers
To manage network connections
What type of network has each computer linked to two others?
Star system
Ring system
Bus system
Mesh system
What is a bus system in networking?
A network that has a central cable called a bus
A network where each computer is connected to a central server
A network that connects multiple buildings
A wireless network only
What does the term 'customize' mean in the context of devices?
To change something to suit a special purpose
To make something more complex
To create a new device from scratch
To connect devices wirelessly
What is the function of GPS in the customized devices for traffic wardens?
To connect to the internet
To track the location of the warden
To send messages
To take photographs
What is the primary function of a router in a network?
To connect multiple networks
To store data
To provide power to devices
To serve as a client
What is the main purpose of a firewall in a network?
To enhance internet speed
To protect the network from unauthorized access
To connect different networks
To store backup data
What is the primary purpose of Optical Character Recognition (OCR) technology?
To enhance image quality
To convert images of text into machine-encoded text
To create 3D models from images
To compress image files
Which technology is commonly used for real-time location tracking in vehicles?
Wi-Fi
Bluetooth
Global Positioning System (GPS)
Near Field Communication (NFC)
What is a key feature of a star network topology?
All devices are connected to a single central hub
Devices are connected in a circular fashion
It requires less cabling than other topologies
Each device connects to every other device directly
What does the term 'bandwidth' refer to in networking?
The amount of data that can be transmitted in a given time
The physical distance between devices
The type of network connection used
The number of devices connected to a network
