Computer Networks Quizzes: Test Your Understanding

Question 1

Which network topology offers the highest level of redundancy, ensuring network resilience and minimizing downtime?

Accepted Answer

Mesh

Answer

Bus

Answer

Ring

Answer

Star

Question 2

In a computer network, what is the primary function of a router?

Accepted Answer

Facilitating communication between different network segments

Answer

Connecting devices within the same network segment

Answer

Enhancing network security

Answer

Providing data storage and retrieval services

Question 3

Which of the following protocols is predominantly used for accessing web pages on the internet?

Accepted Answer

HTTP

Answer

TCP

Answer

UDP

Answer

SMTP

Question 4

What is the fundamental purpose of a firewall in a computer network?

Accepted Answer

Preventing unauthorized access and defending against cyber threats

Answer

Optimizing network performance and enhancing speed

Answer

Diagnosing and resolving network issues

Answer

Connecting diverse network segments

Question 5

In subnetting, what is the primary purpose of a network mask?

Accepted Answer

Segmenting a network into smaller subnetworks

Answer

Assigning IP addresses to individual devices

Answer

Filtering and controlling network traffic

Answer

Providing enhanced network security

Question 6

In a computer network, what is the primary purpose of a MAC address?

Accepted Answer

Uniquely identifying a specific device connected to the network

Answer

Assigning IP addresses to network devices

Answer

Filtering and managing network traffic

Answer

Providing encryption for secure data transmission

Question 7

Which network topology is NOT commonly used?

Accepted Answer

Fully Connected

Answer

Bus

Answer

Star

Answer

Ring

Question 8

Which advantage does IPv6 offer over IPv4, addressing the challenges of Internet expansion?

Accepted Answer

IPv6 resolves IPv4 address depletion with its 128-bit address space.

Answer

IPv6 optimizes data transfer speeds with its enhanced protocol structure.

Answer

IPv6 simplifies network management by reducing header overhead.

Answer

IPv6 inherently enhances network security with built-in encryption mechanisms.

Question 9

In the context of network troubleshooting, what is the primary role of a protocol analyzer?

Accepted Answer

To rapidly identify the source of a network issue.

Answer

To monitor network performance and pinpoint potential bottlenecks.

Answer

To simulate network traffic and evaluate network device functionality.

Question 10

Which standard protocol is primarily used for data transfer across the internet?

Accepted Answer

TCP/IP

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 11

What is the primary purpose of a network address?

Accepted Answer

To uniquely identify a specific device on a network

Answer

To direct data packets to their intended destination

Answer

To provide access to network resources

Answer

To safeguard the network from unauthorized access

Question 12

What is the chief function of a network switch?

Accepted Answer

To interconnect devices on a network

Answer

To facilitate data packet routing

Answer

To provide internet connectivity

Answer

To filter network traffic

Question 13

What is the primary objective of a network management system (NMS)?

Accepted Answer

To monitor and manage devices on a network

Answer

To identify and resolve network issues

Answer

To configure network settings

Answer

To ensure network security

Question 14

Which network management protocol is commonly used to monitor and manage network devices? Explain its key features.

Accepted Answer

SNMP

Answer

Telnet

Answer

HTTP

Answer

DNS

Question 15

Which network topology provides the highest level of redundancy and fault tolerance, where each node is directly connected to every other node?

Accepted Answer

Full Mesh

Answer

Star

Answer

Bus

Answer

Ring

Question 16

Which protocol is responsible for providing a reliable, connection-oriented transport service for data transmission across a network?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

IP

Question 17

Which security measure involves using a complex algorithm to transform plaintext data into ciphertext, making it unreadable without the correct decryption key?

Accepted Answer

Encryption

Answer

Virtual Private Network

Answer

Intrusion Detection System

Answer

Firewall

Question 18

Which layer in the TCP/IP model is responsible for controlling the flow and sequencing of data packets?

Accepted Answer

Transport

Answer

Application

Answer

Data Link

Answer

Network

Question 19

What is the main purpose of a subnet mask in an IP address?

Accepted Answer

To divide a network into smaller segments, allowing for more efficient network management and traffic control.

Answer

To route traffic between different networks.

Answer

To identify the network interface of a device.

Answer

To encrypt data packets.

Question 20

What is the fundamental difference between a router and a switch in a network infrastructure?

Accepted Answer

A router connects multiple networks, enabling communication between different segments, while a switch connects multiple devices within a single network segment, facilitating data exchange among those devices.

Answer

A router is faster than a switch.

Answer

A switch is more secure than a router.

Question 21

Which type of network security attack involves an attacker intercepting and tampering with data as it is transmitted between two parties, impersonating one of them?

Accepted Answer

Man-in-the-Middle Attack

Answer

Malware Attack

Answer

DDoS Attack

Answer

Phishing Attack

Question 22

What is the primary function of a firewall in a network security system?

Accepted Answer

To monitor and control incoming and outgoing network traffic, preventing unauthorized access to a network and defending against cyber threats.

Answer

To encrypt data packets.

Answer

To detect and block malicious software.

Answer

To route traffic between different networks.

Question 23

In a star network topology, which component is the central connection point?

Accepted Answer

Hub

Answer

Server

Answer

Switch

Answer

Router

Question 24

Which of the following is the primary purpose of the TCP protocol?

Accepted Answer

Ensure reliable data delivery

Answer

Encrypt data transmissions

Answer

Provide routing information

Question 25

What is the subnet mask used for?

Accepted Answer

Determine the network and host portions of an IP address

Answer

Configure network security

Answer

Assign IP addresses to devices

Answer

Filter network traffic

Question 26

Which layer of the OSI model is responsible for addressing and routing data packets?

Accepted Answer

Network

Answer

Transport

Answer

Application

Question 27

What is the key difference between a client and a server in a network architecture?

Accepted Answer

Client requests services, server provides services

Answer

Both clients and servers provide services

Answer

Server requests services, client provides services

Answer

Neither clients nor servers provide services

Question 28

What is the main function of a virtual private network (VPN)?

Accepted Answer

Establish a secure connection over an insecure network

Answer

Improve network performance

Answer

Translate domain names into IP addresses

Question 29

Which of the following is NOT a service provided by a DNS server?

Accepted Answer

Email hosting

Answer

IP address translation

Answer

Domain name resolution

Question 30

In which network topology are devices connected linearly?

Accepted Answer

Bus

Answer

Mesh

Answer

Ring

Answer

Star

Question 31

Which network protocol is primarily responsible for routing data packets across networks?

Accepted Answer

TCP/IP

Answer

FTP

Answer

SMTP

Answer

HTTP

Question 32

What is the term for dividing a large network into smaller, manageable segments?

Accepted Answer

Subnetting

Answer

Routing

Answer

Bridging

Answer

Framing

Question 33

Which layer of the TCP/IP model is responsible for ensuring data integrity and retransmitting lost data?

Accepted Answer

Transport

Answer

Application

Answer

Network

Answer

Physical

Question 34

What is the primary function of a MAC address?

Accepted Answer

Uniquely identifying a network interface card

Answer

Routing data packets

Answer

Storing IP addresses

Question 35

Which advantage is associated with cloud computing?

Accepted Answer

Reduced hardware costs

Answer

Increased data security

Answer

Limited scalability

Answer

Complex maintenance

Question 36

What is the main purpose of a firewall?

Accepted Answer

Preventing unauthorized access to a network

Answer

Storing user accounts

Answer

Performing virus scans

Answer

Routing data packets

Question 37

Which of the following is a wireless network security protocol?

Accepted Answer

WPA2

Answer

IPsec

Answer

SSL

Answer

TLS

Question 38

Which network topology provides redundant paths to enhance network resilience, connecting devices in a circular loop?

Accepted Answer

Ring topology

Answer

Star topology

Answer

Mesh topology

Answer

Bus topology

Question 39

Identify the network protocol that is responsible for setting up and maintaining reliable connections between devices on a network:

Accepted Answer

TCP (Transmission Control Protocol)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

UDP (User Datagram Protocol)

Question 40

Identify the network device that functions as a gateway, enabling communication between different networks:

Accepted Answer

Router

Answer

Hub

Answer

Switch

Answer

Modem

Question 41

Which network addressing scheme utilizes a hierarchical structure to assign unique IP addresses to devices on a network?

Accepted Answer

CIDR (Classless Inter-Domain Routing)

Answer

NAT (Network Address Translation)

Answer

DHCP (Dynamic Host Configuration Protocol)

Answer

DNS (Domain Name System)

Question 42

Which type of network employs wireless connections, allowing devices to connect without the need for wired infrastructure?

Accepted Answer

Wireless LAN (Local Area Network)

Answer

WAN (Wide Area Network)

Answer

Ethernet LAN (Local Area Network)

Answer

MAN (Metropolitan Area Network)

Question 43

Identify the networking concept that refers to the ability of a network to recover and continue operating after disruptions or failures:

Accepted Answer

Network resilience

Answer

Network security

Answer

Network scalability

Answer

Network performance

Question 44

Which protocol is primarily used for transferring web pages and other content over the internet?

Accepted Answer

HTTP (Hypertext Transfer Protocol)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

FTP (File Transfer Protocol)

Answer

Telnet (Terminal Network)

Question 45

Which cloud computing model offers users on-demand access to shared computing resources?

Accepted Answer

Infrastructure as a Service (IaaS)

Answer

Function as a Service (FaaS)

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)