Computer Networks Overview: Definition and Components

Question 1

The primary purpose of a computer network is to:

Accepted Answer

Connect computers to share resources and enable communication

Answer

Provide internet access exclusively

Answer

Store and process large data sets primarily

Answer

Control and manage network devices solely

Question 2

Which component is NOT typically considered a core element of a computer network?

Accepted Answer

Operating systems

Answer

Routers

Answer

Switches

Answer

Servers

Question 3

The primary role of a protocol in a computer network is to:

Accepted Answer

Establish rules for communication between devices

Answer

Provide encryption for secure data transmission

Answer

Manage network traffic efficiently

Answer

Store user data securely

Question 4

In a computer network, which topology connects all devices to a central hub?

Accepted Answer

Star topology

Answer

Bus topology

Answer

Ring topology

Answer

Mesh topology

Question 5

The purpose of a MAC address in a computer network is to:

Accepted Answer

Uniquely identify a specific device on the network

Answer

Route traffic effectively between devices

Answer

Store user preferences securely

Answer

Provide encryption for secure data transmission

Question 6

The primary function of network security measures is to:

Accepted Answer

Protect against unauthorized access and data breaches

Answer

Optimize network performance exclusively

Answer

Manage network traffic efficiently

Answer

Provide user support primarily

Question 7

Which of the following is NOT a major trend observed in the evolution of computer networks?

Accepted Answer

Decline in the reliance on wired networks

Answer

Increased adoption of wireless technologies

Answer

Growing utilization of cloud computing services

Answer

Increased focus on network virtualization

Question 8

When designing network protocols, which factor is of utmost importance?

Accepted Answer

User requirements

Answer

Cost of implementation

Answer

Availability of hardware

Answer

Network topology

Question 9

In the TCP/IP model, which layer determines the route packets take to reach their destination based on IP addresses?

Accepted Answer

Internet Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Network Access Layer

Question 10

How does the choice of network topology affect network performance?

Accepted Answer

Selecting the appropriate network topology can enhance network performance based on specific needs.

Answer

Network topology has no impact on network performance.

Answer

All network topologies offer the same performance benefits.

Question 11

Which recent advancement in computer networking is expected to greatly improve connectivity, allowing for cutting-edge applications like virtual reality and self-driving cars?

Accepted Answer

5G

Answer

Blockchain

Answer

Cloud Computing

Question 12

What is the primary objective of a computer network?

Accepted Answer

To facilitate communication and data exchange between connected devices

Answer

To store and retrieve large amounts of data

Answer

To process complex computations

Question 13

Which term describes the physical pathway that links devices within a network?

Accepted Answer

Transmission medium

Answer

Network interface card

Answer

Protocol stack

Answer

Routing table

Question 14

In a full mesh network topology, each device is directly connected to:

Accepted Answer

Every other device

Answer

A central hub

Answer

A series of switches

Answer

The internet gateway

Question 15

Which protocol is responsible for establishing and maintaining reliable connections between devices?

Accepted Answer

TCP

Answer

IP

Answer

UDP

Answer

HTTP

Question 16

What is the primary advantage of a hierarchical network architecture?

Accepted Answer

Enhanced scalability and simplified management

Answer

Lower cost

Answer

Increased security

Answer

Reduced latency

Question 17

Which network device serves as an intermediary between networks using different communication protocols?

Accepted Answer

Gateway

Answer

Switch

Answer

Router

Answer

Bridge

Question 18

What is the primary purpose of a firewall in a network?

Accepted Answer

To monitor and control incoming and outgoing network traffic based on security policies

Answer

To translate network addresses

Answer

To route traffic between networks

Question 19

When designing a computer network, the most crucial factor to consider is:

Accepted Answer

The intended purpose and objectives of the network

Answer

The available budget for network implementation

Answer

The number of users accessing the network

Answer

The types of devices connecting to the network

Question 20

What is the primary goal of a computer network?

Accepted Answer

Resource sharing

Answer

Application execution

Answer

Executing commands

Answer

Data storage

Question 21

Which network topology involves connecting multiple nodes to a central bus?

Accepted Answer

Bus topology

Answer

Database topology

Answer

Algorithm topology

Question 22

What is the main function of a network interface card (NIC)?

Accepted Answer

Facilitates communication between devices on the network

Answer

Manages network data and configuration

Answer

Handles network traffic routing

Answer

Ensures network security

Question 23

Which of the following is a potential drawback of using a computer network?

Accepted Answer

Higher hardware expenses

Answer

Increased communication efficiency

Answer

Centralized data storage

Answer

Improved resource utilization

Question 24

Which of the following describes a key feature of a peer-to-peer network?

Accepted Answer

Nodes are not assigned specific roles

Answer

Peer-to-peer networks are typically costly to maintain

Answer

A dedicated server is required in a peer-to-peer network

Answer

One node has centralized control over the network

Question 25

What is the purpose of a network protocol?

Accepted Answer

Establishes rules for data transmission

Answer

Offers a user-friendly interface for network management

Answer

Provides security measures for network data

Answer

Controls the routing of network traffic

Question 26

What is a primary benefit of using a structured cabling system?

Accepted Answer

Enhanced cable management and reduced network issues

Answer

Increased network speed and security

Answer

Lower installation cost and ease of setup

Question 27

Which of the following is a fundamental purpose of computer networks?

Accepted Answer

Enabling resource and information sharing

Answer

Facilitating only video game playing

Answer

Solely managing traffic light systems

Answer

Allowing internet access exclusively

Question 28

In a computer network, which device serves as the central hub for data transmission?

Accepted Answer

Router

Answer

Hub (connecting multiple devices)

Answer

Modem (modulator-demodulator)

Answer

Firewall (protecting against cyber threats)

Question 29

Which network topology allows each device to communicate directly with every other device on the network?

Accepted Answer

Mesh topology

Answer

Ring topology (devices are connected in a closed loop)

Answer

Bus topology (devices are connected to a central cable)

Answer

Star topology (devices connect to a central hub)

Question 30

What is the primary function of a protocol in the context of network communication?

Accepted Answer

Establishing rules and formats for data exchange

Answer

Ensuring the security of network traffic

Answer

Interconnecting different types of networks

Question 31

Within the TCP/IP model, which layer is responsible for managing network traffic addressing and routing?

Accepted Answer

Network Layer

Answer

Application Layer (supporting user applications)

Answer

Transport Layer (managing data delivery)

Answer

Data Link Layer (handling physical transmission)

Question 32

What is the primary purpose of a firewall in a network security context?

Accepted Answer

Blocking unauthorized access and safeguarding against cyber threats

Answer

Connecting computers to the network

Answer

Providing wireless network connectivity

Question 33

Which type of network interconnects computers within a limited geographical area?

Accepted Answer

LAN (Local Area Network)

Answer

VPN (Virtual Private Network)

Answer

WAN (Wide Area Network)

Answer

MAN (Metropolitan Area Network)

Question 34

Which cloud computing model provides the highest level of control over infrastructure and resources?

Accepted Answer

IaaS (Infrastructure as a Service)

Answer

SaaS (Software as a Service)

Answer

PaaS (Platform as a Service)

Answer

FaaS (Functions as a Service)

Question 35

What is the primary responsibility of a network administrator?

Accepted Answer

Managing, monitoring, and maintaining computer networks

Answer

Providing technical support to network users

Answer

Developing software applications for networks

Answer

Installing and configuring network hardware components

Question 36

Which network topology involves connecting all devices to a central node?

Accepted Answer

Star

Answer

Bus

Answer

Mesh

Answer

Ring

Question 37

What type of device interconnects multiple networks?

Accepted Answer

Router

Answer

Switch

Answer

Bridge

Answer

Hub

Question 38

Which of the following is a type of network security risk?

Accepted Answer

Phishing

Answer

Natural disaster

Answer

Power outage

Question 39

What is the function of a firewall in a computer network?

Accepted Answer

To monitor and control network traffic

Answer

To translate domain names into IP addresses

Answer

To store data securely

Answer

To provide wireless connectivity

Question 40

What type of network covers a small geographic area and connects devices within a single location?

Accepted Answer

LAN

Answer

MAN

Answer

PAN

Answer

WAN

Question 41

**What is the primary objective of a computer network?**

Accepted Answer

To facilitate communication and resource sharing among interconnected devices

Answer

To provide secure data storage

Answer

To control external peripherals

Question 42

**Which of the following is NOT a fundamental component of a computer network?**

Accepted Answer

Monitor

Answer

Switch

Answer

Router

Answer

Server

Question 43

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

Accepted Answer

Establishes a physical connection between a computer and a network

Answer

Encrypts network data for security

Answer

Provides wireless connectivity

Question 44

**Which of the following accurately describes a network topology?**

Accepted Answer

A logical or physical arrangement of interconnected devices in a network

Answer

A software application for managing networks

Answer

A type of network security protocol

Question 45

**What is the primary responsibility of a network operating system (NOS)?**

Accepted Answer

Manages and controls network resources, such as user accounts, file access, and network traffic

Answer

Offers a graphical user interface (GUI) for network administration

Answer

Provides protection against network threats

Question 46

**Which of the following is a significant advantage of using computer networks?**

Accepted Answer

Enhanced resource sharing and collaboration among users

Answer

Increased isolation and limited communication

Answer

Reduced efficiency and productivity

Question 47

**Which of the following is a commonly employed network security protocol?**

Accepted Answer

Transport Layer Security (TLS)

Answer

Simple Mail Transfer Protocol (SMTP)

Answer

Dynamic Host Configuration Protocol (DHCP)

Answer

Hypertext Transfer Protocol (HTTP)

Question 48

**What is the primary purpose of a firewall in a computer network?**

Accepted Answer

Monitors and controls incoming and outgoing network traffic to prevent unauthorized access and protect against cyber threats

Answer

Stores and manages network data

Answer

Facilitates communication between devices on a network

Answer

Provides access to the internet

Question 49

**Identify a key trend shaping the evolution of computer networks in recent years.**

Accepted Answer

Growing adoption of cloud computing services

Answer

Decline in the significance of the internet

Answer

Emphasis on isolated and independent systems

Answer

Decreasing reliance on wireless technologies

Question 50

Define the primary objective of a computer network.

Accepted Answer

To facilitate data exchange and resource sharing among connected devices

Answer

To offer vast data storage capacity

Answer

To safeguard networks from digital threats

Question 51

In a star topology, how are devices interconnected?

Accepted Answer

Through a central hub

Answer

In a circular arrangement

Answer

In a linear fashion

Question 52

What is the distinctive role of a MAC address?

Accepted Answer

To provide a unique identifier for each connected device

Answer

To prevent unauthorized network access

Answer

To direct traffic flow within a network

Answer

To distribute IP addresses to devices

Question 53

Which protocol operates at Layer 3 of the TCP/IP model?

Accepted Answer

Internet Protocol (IP)

Answer

Transmission Control Protocol (TCP)

Answer

Ethernet

Answer

Hypertext Transfer Protocol (HTTP)

Question 54

Describe the primary function of a switch in a network.

Accepted Answer

To transmit data based on MAC addresses

Answer

To establish connections between multiple devices

Answer

To provide access to the internet

Answer

To offer storage space for files

Question 55

Explain the fundamental difference between TCP and UDP.

Accepted Answer

TCP is connection-oriented while UDP is connectionless

Answer

UDP provides enhanced security compared to TCP

Answer

TCP offers faster data transmission than UDP

Question 56

What is the primary purpose of a network security firewall?

Accepted Answer

To safeguard a network from unauthorized access

Answer

To provide network backup services

Answer

To optimize network performance

Answer

To troubleshoot network problems