Computer Networks: Master the Fundamentals of Network Connectivity

Question 1

Which network protocol is responsible for converting domain names into their corresponding IP addresses?

Accepted Answer

DNS

Answer

HTTP

Answer

FTP

Answer

TCP

Question 2

Which of the following protocols operates at Layer 2 of the OSI model?

Accepted Answer

Ethernet

Answer

IP

Answer

TCP

Question 3

Which network topology features multiple pathways between devices, enhancing redundancy and performance?

Accepted Answer

Mesh topology

Answer

Bus topology

Answer

Star topology

Answer

Ring topology

Question 4

What is network segmentation and how does it enhance network design?

Accepted Answer

Dividing a network into smaller segments with separate security policies and access controls

Answer

Connecting different network types like LANs and WANs

Answer

Reducing the number of devices on each network to improve performance

Question 5

Which of the following are common network security threats and their corresponding mitigation techniques?

Accepted Answer

Malware and viruses can be prevented using antivirus software.

Accepted Answer

Firewalls can prevent unauthorized network access.

Accepted Answer

Data encryption protects data from interception during transmission.

Question 6

What is the primary function of network management systems (NMSs) in computer networks?

Accepted Answer

Monitor network performance, detect problems, and facilitate troubleshooting

Answer

Configure network devices and enforce security policies

Answer

Manage only large and complex networks, not smaller ones

Answer

Primarily focus on resolving network issues after they occur, rather than proactive monitoring and prevention

Question 7

JSON (JavaScript Object Notation) is a data format commonly used in web applications for data exchange between a server and a web client. Which of the following statements best describes JSON?

Accepted Answer

JSON has a hierarchical structure.

Answer

JSON is a binary data format.

Answer

JSON can only be used with JavaScript.

Question 8

Which of the following is not a network topology?

Accepted Answer

Protocol

Answer

Bus

Answer

Star

Answer

Tree

Question 9

What is the primary purpose of a network protocol?

Accepted Answer

To define rules for communication between devices on a network

Answer

To provide encryption for network data

Answer

To manage network resources

Answer

To troubleshoot network issues

Question 10

Which technology is commonly used for Wide Area Networks (WANs)?

Accepted Answer

ADSL

Answer

Ethernet

Answer

Wi-Fi

Answer

Bluetooth

Question 11

What is the primary function of a network switch?

Accepted Answer

To connect devices within a network

Answer

To route data between different networks

Answer

To provide security measures for network data

Answer

To manage and allocate network resources

Question 12

Which network protocol is responsible for establishing and maintaining connections?

Accepted Answer

TCP

Answer

HTTP

Answer

IP

Answer

UDP

Question 13

What is the primary purpose of a MAC (Media Access Control) address?

Accepted Answer

To uniquely identify network devices on a LAN

Answer

To route network traffic across the Internet

Answer

To provide secure communication channels

Answer

To store user passwords

Question 14

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

Accepted Answer

LAN (Local Area Network)

Answer

WAN (Wide Area Network)

Answer

MAN (Metropolitan Area Network)

Answer

CAN (Campus Area Network)

Question 15

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

Accepted Answer

To route data packets between different networks and determine the optimal paths for data transmission

Answer

To provide internet access to connected devices

Answer

To store network configuration information and manage network devices

Answer

To protect the network from malicious software and cyberattacks

Question 16

Which of the following is a widely used type of network protocol?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

HTML (HyperText Markup Language)

Answer

JPEG (Joint Photographic Experts Group)

Answer

MP3 (MPEG-1 Audio Layer 3)

Question 17

Which of the following is not a fundamental network topology?

Accepted Answer

Chain

Answer

Bus

Answer

Star

Answer

Mesh

Question 18

Which type of network is commonly used to connect devices within a single building?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Answer

PAN

Question 19

What is the primary function of a firewall on a computer network?

Accepted Answer

To prevent unauthorised access

Answer

To manage network traffic

Answer

To encrypt data

Answer

To detect malware

Question 20

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

Accepted Answer

To forward packets between networks

Answer

To connect devices to a network

Answer

To manage network traffic

Answer

To translate data formats

Question 21

What is the purpose of encrypting data in network security?

Accepted Answer

To prevent unauthorized access to sensitive information

Answer

To improve network performance

Answer

To detect and remove viruses

Answer

To backup data in case of a system failure

Question 22

Which type of network spans a wide geographical area, connecting devices across multiple cities or countries?

Accepted Answer

WAN

Answer

LAN

Answer

MAN

Answer

PAN

Question 23

What tool is commonly used by network administrators to monitor and troubleshoot network performance?

Accepted Answer

Network analyzer

Answer

Packet sniffer

Answer

Router

Answer

Switch

Question 24

What is the primary goal of a firewall in network security?

Accepted Answer

To prevent unauthorized access to a network or system

Answer

To detect and remove malicious software

Answer

To optimize network performance

Answer

To provide secure remote access to users

Question 25

What is the main role of an Internet Service Provider (ISP)?

Accepted Answer

Providing internet connectivity to end users and organizations

Answer

Developing and maintaining web infrastructure

Answer

Creating and distributing software applications

Answer

Monitoring and regulating internet traffic

Question 26

Which layer in the OSI model is primarily responsible for data encapsulation?

Accepted Answer

Data Link

Answer

Physical

Answer

Network

Answer

Transport

Question 27

Which security measure involves converting data into an unreadable format?

Accepted Answer

Encryption

Answer

Firewall

Answer

Antivirus

Answer

Authentication

Question 28

What is the main purpose of a MAC address?

Accepted Answer

To uniquely identify a network device

Answer

To route traffic between networks

Answer

To provide security for network communications

Answer

To store user data

Question 29

Which type of network covers a wide geographic area and connects devices over long distances?

Accepted Answer

WAN

Answer

LAN

Answer

MAN

Answer

PAN

Question 30

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

Accepted Answer

To route traffic between different networks

Answer

To connect devices within a network

Answer

To provide access to the Internet

Answer

To store and manage network data

Question 31

In the TCP/IP model, which layer is primarily responsible for routing packets across different networks?

Accepted Answer

Network Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Data Link Layer

Question 32

Which of the following is NOT a commonly used network management tool?

Accepted Answer

Spreadsheets

Answer

Network monitoring software

Answer

SNMP

Answer

Packet sniffers

Question 33

What is the primary purpose of the domain name system (DNS) in computer networks?

Accepted Answer

To translate domain names into IP addresses

Answer

To provide email services

Answer

To route traffic across the Internet

Answer

To ensure network security

Question 34

Which characteristic is distinctive of a wide area network (WAN)?

Accepted Answer

Extensive geographical coverage

Answer

High speed and minimal latency

Answer

Limited number of connected devices

Answer

Utilization of a shared transmission medium

Question 35

What is the primary reason for utilizing network protocols?

Accepted Answer

To define standards for data communication

Answer

To provide security for data transmission

Answer

To manage network resources

Answer

To translate IP addresses into domain names

Question 36

In LANs, which network topology is typically used?

Accepted Answer

Star

Answer

Bus

Answer

Mesh

Answer

Ring

Question 37

Firewalls in computer networks serve what primary purpose?

Accepted Answer

Preventing unauthorized network access

Answer

Enhancing network performance

Answer

Routing traffic between diverse networks

Answer

Detecting and removing viruses

Question 38

What is the primary function of the MAC address on a network interface card (NIC)?

Accepted Answer

Uniquely identifying the device on the network

Answer

Identifying the network segment

Answer

Storing the IP address of the device

Answer

Regulating the network's data flow

Question 39

What is the fundamental difference between TCP and UDP protocols?

Accepted Answer

TCP operates in a connection-oriented manner, while UDP is connectionless.

Answer

UDP surpasses TCP in reliability.

Answer

TCP is suitable for streaming, whereas UDP is suited for data transfer.

Answer

UDP outperforms TCP in speed.

Question 40

What type of network connects devices within a small geographical area, such as a home or office?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Answer

GAN

Question 41

Which of the following is a technique used to identify the path taken by packets in a network?

Accepted Answer

Traceroute

Answer

Ping

Answer

Wireshark

Answer

Packet sniffer

Question 42

What is the primary function of a Domain Name System (DNS) server?

Accepted Answer

To translate domain names into IP addresses

Answer

To provide email services

Answer

To store website content

Answer

To manage network traffic

Question 43

What is the purpose of a router in a computer network?

Accepted Answer

To route traffic between networks

Answer

To connect devices on a network

Answer

To provide network security

Answer

To provide internet access

Question 44

Which protocol enables communication between web browsers and servers?

Accepted Answer

HTTP

Answer

SMTP

Answer

FTP

Answer

TCP

Question 45

Which security measure is designed to prevent unauthorized access to networks?

Accepted Answer

Firewall

Answer

Load balancer

Answer

Proxy server

Question 46

What type of network connects devices within a limited physical area, typically a building or campus?

Accepted Answer

LAN (Local Area Network)

Answer

WAN (Wide Area Network)

Answer

MAN (Metropolitan Area Network)

Question 47

Which network device is responsible for routing traffic and connecting devices to a network?

Accepted Answer

Router

Answer

Modem

Answer

NIC (Network Interface Card)

Answer

Switch

Question 48

What is the primary objective of network troubleshooting?

Accepted Answer

To diagnose and resolve network issues

Answer

To optimize network performance

Answer

To manage network security

Answer

To install and configure networks

Question 49

What is the key distinction between IPv4 and IPv6?

Accepted Answer

IPv6 offers a larger address space compared to IPv4

Answer

IPv4 is faster than IPv6

Answer

IPv6 provides better security than IPv4

Answer

IPv4 is designed for wired networks, while IPv6 is used for wireless networks

Question 50

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

Accepted Answer

To facilitate network connectivity for a device

Answer

To store network data

Answer

To control network traffic flow

Answer

To protect networks from security threats

Question 51

In the TCP/IP model, which layer is primarily responsible for ensuring reliable data transmission by detecting and correcting errors?

Accepted Answer

Transport layer

Answer

Data link layer

Answer

Application layer

Answer

Network layer

Question 52

Which security measure involves convertingplaintext data into an encrypted format before transmitting it?

Accepted Answer

Cryptography

Answer

Biometrics

Answer

Firewall

Answer

Authentication

Question 53

Which type of network is designed to connect devices within a limited geographical area, such as a building or a campus?

Accepted Answer

LAN (Local Area Network)

Answer

WAN (Wide Area Network)

Answer

GAN (Global Area Network)

Answer

MAN (Metropolitan Area Network)

Question 54

What is the primary function of a router in a network?

Accepted Answer

To interconnect different networks and route data packets between them

Answer

To store and manage data

Answer

To serve as the central access point for wireless devices

Question 55

Which of the following protocols is specifically designed for sending electronic mail over the internet?

Accepted Answer

SMTP (Simple Mail Transfer Protocol)

Answer

FTP (File Transfer Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

DNS (Domain Name System)

Question 56

What is the primary responsibility of a network operating system?

Accepted Answer

To manage network resources and provide services to connected devices

Answer

To protect the network from malicious attacks

Answer

To provide a graphical user interface for network administration

Question 57

Which IP addressing scheme allows for the flexible allocation of IP addresses by utilizing variable-length subnet masks?

Accepted Answer

CIDR (Classless Inter-Domain Routing)

Answer

IPv4 (Internet Protocol version 4)

Answer

IPv6 (Internet Protocol version 6)

Answer

DHCP (Dynamic Host Configuration Protocol)

Question 58

What is the process of dividing a large network into smaller, more manageable subnetworks called?

Accepted Answer

Subnetting

Answer

Segmentation

Answer

Routing

Answer

VLANing

Question 59

Which wireless network standard operates in the 2.4GHz frequency band and is commonly used in home and small office environments?

Accepted Answer

Wi-Fi 4 (802.11n)

Answer

Wi-Fi 5 (802.11ac)

Answer

Wi-Fi 6 (802.11ax)

Answer

Bluetooth

Question 60

Which of the following is NOT a recognized network topology?

Accepted Answer

Hierarchy

Answer

Ring

Answer

Star

Answer

Bus

Question 61

In the TCP/IP model, which layer is accountable for directing data packets?

Accepted Answer

Network Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Data Link Layer

Question 62

Which security measure employs data encryption during transmission?

Accepted Answer

Encryption

Answer

Access Control Lists

Answer

Authentication

Answer

Firewalls

Question 63

What fundamental distinction exists between a LAN and a WAN?

Accepted Answer

LANs encompass a limited area while WANs span broader distances.

Answer

LANs utilize distinct protocols from WANs.

Answer

LANs generally provide superior speed compared to WANs.

Question 64

What is the primary purpose of a MAC address?

Accepted Answer

Uniquely identifying a device on a network.

Answer

Assigning IP addresses to devices.

Answer

Establishing a secure connection between devices.

Answer

Controlling access to network resources.