Computer Networks MCQs

#1. Which network device is used to amplify and regenerate data signals in order to extend the range of a network?

Repeater

Switch

Router

Hub

Modem

#2. What is the primary purpose of an email client program?

To send, receive, and manage email messages

To encrypt data for secure transmission

To filter incoming emails

To convert analog signals to digital

To manage printer settings

#3. Which type of network is typically used for connecting devices within a home or office environment?

LAN (Local Area Network)

WAN (Wide Area Network)

MAN (Metropolitan Area Network)

WLAN (Wireless Local Area Network)

PAN (Personal Area Network)

#4. What is the main purpose of a firewall in a computer network?

To protect against unauthorized access and malicious activity

To enhance download speed

To store files in the cloud

To convert analog signals to digital

To print documents

#5. Which protocol is used for secure remote login and file transfer over a network?

SSH (Secure Shell)

FTPS (File Transfer Protocol Secure)

HTTP

SMTP

POP

#6. What is the purpose of a MAC address in networking?

It is a unique identifier for a network interface card

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#7. What is the main function of a DNS cache in a computer system?

It stores recently accessed DNS records to speed up future lookups

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#8. In a network, what does the term “bandwidth” refer to?

The maximum data transfer rate of a network connection

The physical width of a network cable

The distance between devices on a network

The number of devices connected to a network

The speed of data transmission on a network

#9. Which wireless encryption protocol is considered the most secure as of 2022?

WPA3

WEP

WPA2

WPA

None of the above

#10. What is the purpose of a subnet in a computer network?

It divides a large network into smaller, more manageable segments

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#11. Which protocol is used for secure remote access to a network using a Virtual Private Network (VPN)?

OpenVPN

PPTP

L2TP/IPsec

SSL/TLS VPN

IPsec VPN

#12. What is the purpose of a proxy server in a network?

It acts as an intermediary between clients and servers, forwarding requests and responses

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#13. What is the function of a repeater in a network?

It amplifies and regenerates data signals to extend the range of a network

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#14. What is the purpose of ICMP (Internet Control Message Protocol) in a computer network?

It is used for error reporting and diagnostics in IP networks

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#15. Which type of cable is commonly used for Ethernet networking and can support high-speed data transmission?

Cat 5e

Coaxial

Fiber optic

USB

HDMI

#16. What is the primary function of a router in a computer network?

To forward data packets between different networks

To encrypt data for secure transmission

To filter incoming emails

To convert analog signals to digital

To manage printer settings

#17. Which network device is used to connect multiple networks together and make decisions about where to send data packets?

Router

Switch

Hub

Modem

Firewall

#18. Which protocol is used for transferring files over a secure connection (encrypted) on a network?

SFTP (SSH File Transfer Protocol)

FTPS (File Transfer Protocol Secure)

TFTP (Trivial File Transfer Protocol)

HTTP

SMTP

#19. What is the purpose of VLAN (Virtual LAN) in networking?

It allows logical segmentation of a network, even if devices are physically located on the same network switch

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#20. What is the main purpose of a DNS cache in a computer system?

It stores recently accessed DNS records to speed up future lookups

It encrypts data for secure transmission

It filters incoming emails

It converts analog signals to digital

It manages printer settings

#1. Which network device is used to amplify and regenerate data signals in order to extend the range of a network?

#2. What is the primary purpose of an email client program?

#3. Which type of network is typically used for connecting devices within a home or office environment?

#4. What is the main purpose of a firewall in a computer network?

#5. Which protocol is used for secure remote login and file transfer over a network?

#6. What is the purpose of a MAC address in networking?

#7. What is the main function of a DNS cache in a computer system?

#8. In a network, what does the term “bandwidth” refer to?

#9. Which wireless encryption protocol is considered the most secure as of 2022?

#10. What is the purpose of a subnet in a computer network?

#11. Which protocol is used for secure remote access to a network using a Virtual Private Network (VPN)?

#12. What is the purpose of a proxy server in a network?

#13. What is the function of a repeater in a network?

#14. What is the purpose of ICMP (Internet Control Message Protocol) in a computer network?

#15. Which type of cable is commonly used for Ethernet networking and can support high-speed data transmission?

#16. What is the primary function of a router in a computer network?

#17. Which network device is used to connect multiple networks together and make decisions about where to send data packets?

#18. Which protocol is used for transferring files over a secure connection (encrypted) on a network?

#19. What is the purpose of VLAN (Virtual LAN) in networking?

#20. What is the main purpose of a DNS cache in a computer system?

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