Computer Networks: A Comprehensive Guide for Beginners

Question 1

Which network type is typically used to connect devices within a confined space, like a house or workplace?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Question 2

What is the primary role of a network protocol?

Accepted Answer

To define rules for network communication

Answer

To detect and manage errors in data transmission

Answer

To establish connections between network devices

Answer

To enhance network performance and optimize data flow

Question 3

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

Accepted Answer

A client requests services, while a server provides them.

Answer

A client is always connected to the internet, while a server is not.

Answer

A client has a graphical user interface, while a server does not.

Answer

A client stores data, while a server does not.

Question 4

Which networking device is primarily responsible for routing traffic between different networks?

Accepted Answer

Router

Answer

Switch

Answer

Bridge

Answer

Firewall

Question 5

What is the primary function of a network security firewall?

Accepted Answer

To prevent unauthorized access and threats to the network

Answer

To detect and remove malicious software and viruses

Answer

To enhance network performance and optimize data flow

Answer

To manage user accounts and access permissions

Question 6

What is the primary difference between a LAN and a WAN?

Accepted Answer

A LAN is a small, private network within a limited area, while a WAN connects networks over broader geographical distances.

Answer

A WAN is a private network, while a LAN is a public network.

Answer

A LAN uses wired connections, while a WAN uses wireless connections.

Answer

A WAN is inherently slower than a LAN.

Question 7

Which protocol guarantees reliable data delivery, handles congestion control, and is suitable for applications requiring assured delivery?

Accepted Answer

TCP

Answer

UDP

Answer

IP

Answer

HTTP

Question 8

What network device operates at Layer 2 and uses MAC addresses to forward data?

Accepted Answer

Switch

Answer

Router

Answer

Hub

Answer

Gateway

Question 9

Which of the following is NOT a primary purpose of computer networks?

Accepted Answer

Executing video games

Answer

Enabling resource sharing

Answer

Facilitating communication

Answer

Connecting multiple devices

Question 10

Which network topology involves connecting all computers to a central device, such as a hub or switch?

Accepted Answer

Star

Answer

Bus

Answer

Ring

Answer

Mesh

Question 11

Identify the layer in the TCP/IP model responsible for segmenting and reassembling data.

Accepted Answer

Transport

Answer

Network Access

Answer

Internet

Answer

Application

Question 12

Which networking device operates at the Network Layer and forwards packets based on IP addresses?

Accepted Answer

Router

Answer

Modem

Answer

Switch

Answer

Firewall

Question 13

What is the primary purpose of a MAC address?

Accepted Answer

Identifying individual devices on a network

Answer

Storing user passwords

Answer

Routing packets across the Internet

Answer

Controlling access to network resources

Question 14

Which protocol is commonly used for ensuring reliable data transfer over a network?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

SMTP

Question 15

What is the purpose of a subnet mask?

Accepted Answer

Determining the network and host IDs of an IP address

Answer

Translating domain names to IP addresses

Answer

Providing security for network traffic

Answer

Controlling access to network resources

Question 16

What is the primary role of a network interface card (NIC)?

Accepted Answer

Establishing network connectivity for a device

Answer

Providing security for network traffic

Answer

Storing user data

Answer

Managing network traffic

Question 17

Which type of network is typically used to connect devices within a limited physical area, such as a home or office?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Answer

PAN

Question 18

Which network protocol is responsible for directing data packets across a network to their intended destination?

Accepted Answer

IP

Answer

HTTP

Answer

SMTP

Answer

TCP

Question 19

Which network device serves as the primary gateway for interconnecting networks, facilitating data exchange between networks of different types or technologies?

Accepted Answer

Router

Answer

Network Hub

Answer

Network Switch

Question 20

What is NOT a primary reason for using computer networks?

Accepted Answer

Storing large amounts of data permanently

Answer

Sharing files and resources between devices

Answer

Facilitating communication and collaboration

Answer

Enabling access to information and services

Question 21

In which network topology are all devices directly connected to a central hub?

Accepted Answer

Star

Answer

Ring

Answer

Mesh

Answer

Bus

Question 22

Which protocol is primarily responsible for establishing reliable, end-to-end connections in a network?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

SMTP (Simple Mail Transfer Protocol)

Answer

DNS (Domain Name System)

Answer

HTTP (Hypertext Transfer Protocol)

Question 23

What is a defining characteristic of a LAN (Local Area Network)?

Accepted Answer

Typically covers a small geographical area (like a building or office)

Answer

Always provides internet access

Answer

Must be entirely wired (no wireless connections allowed)

Answer

Exclusively uses high-speed connections

Question 24

What is the primary function of a network interface card (NIC) in a computer?

Accepted Answer

Allows the computer to connect to the network and communicate with other devices

Answer

Stores all the network data and files used by the computer

Answer

Manages the flow of network traffic within the computer

Answer

Secures network connections by preventing unauthorized access

Question 25

Which of the following is a common security threat to computer networks?

Accepted Answer

Malware (viruses, worms, and other malicious software)

Answer

Equipment failure (hardware malfunctions)

Answer

Power outages (affecting network connectivity temporarily)

Answer

Natural disasters (causing widespread network disruption)

Question 26

What is the main purpose of using a firewall in a computer network?

Accepted Answer

To control incoming and outgoing network traffic, blocking unauthorized access

Answer

To provide remote access to the network from any location

Answer

To encrypt all network data for secure communication

Answer

To store detailed records of all network activity (logs)

Question 27

Which networking model describes the functions of network protocols in a layered structure?

Accepted Answer

OSI (Open Systems Interconnection) model

Answer

TCP/IP model (another popular networking model)

Answer

Wireless LAN model (specific to wireless networks)

Answer

Ethernet model (a standard for wired network communication)

Question 28

What is the primary responsibility of a network administrator in managing computer networks?

Accepted Answer

Ensuring the network operates reliably, securely, and efficiently

Answer

Designing and implementing entirely new network technologies

Answer

Providing technical support to individual users with network issues