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WorksheetsComputer Networks Quiz
Total questions: 19
Worksheet time: 10mins
What is the primary use of computer networks?
To facilitate communication and resource sharing
To create standalone computers
To increase hardware costs
To limit access to information
Which of the following is a type of guided transmission media?
Microwaves
Infrared transmission
Radio waves
Fiber optics
What does a modem do?
Amplifies signals
Converts digital signals to analog and vice versa
Routes data packets
Filters network traffic
Which layer of the OSI model is responsible for error control?
Transport Layer
Network Layer
Data Link Layer
Physical Layer
What is the function of a switch in a network?
To filter and forward data packets
To connect multiple networks
To amplify signals
To provide wireless access
Which of the following is NOT a type of network device?
Transmitter
Modem
Hub
Router
What is the main advantage of using fiber optic cables?
High bandwidth and low signal attenuation
Resistance to physical damage
Low cost
Easy installation
In which layer of the OSI model does the TCP protocol operate?
Application Layer
Transport Layer
Network Layer
Data Link Layer
What is the primary role of the Network Layer in the OSI model?
To format data for presentation
To provide end-to-end communication
To route packets between different networks
To manage sessions between applications
Which type of communication allows both devices to send and receive data simultaneously?
Simplex
Half Duplex
Unidirectional
Full Duplex
What is a key disadvantage of using coaxial cables?
Bulky and expensive
High bandwidth
Low susceptibility to interference
Easy installation
Which of the following is a characteristic of unguided media?
Uses electromagnetic waves
Is more secure than guided media
Requires physical connections
Is limited to short distances
What does the term 'attenuation' refer to in data communication?
The increase in signal strength
The loss of signal strength over distance
The distortion of signal shape
The interference from external sources
Which layer of the OSI model is responsible for establishing, managing, and terminating sessions?
Transport Layer
Session Layer
Application Layer
Data Link Layer
What is the primary function of a firewall in a network?
To monitor and control incoming and outgoing network traffic
To provide wireless access
To amplify signals
To connect different networks
Which of the following protocols is used for secure data transmission?
FTP
SMTP
HTTP
TLS/SSL
What is the purpose of the Address Resolution Protocol (ARP)?
To convert IP addresses to MAC addresses
To encrypt data for secure transmission
To manage data flow in a network
To establish sessions between devices
Which type of network device operates at the data link layer?
Modem
Switch
Router
Gateway
What is the main disadvantage of using wireless communication?
Requires physical connections
Security risks
Limited range
High installation cost
