Network Fundamentals: Master the Basics of Computer Networking

Question 1

In the OSI model, which feature is essential for understanding how data is packaged and moved across network layers?

Accepted Answer

Encapsulation using headers and trailers at each layer

Answer

Abstraction of the upper layers

Answer

Multiple protocols within a single layer

Answer

Standardized interfaces between layers

Question 2

Within the TCP/IP model, which layer is responsible for handling application-specific data?

Accepted Answer

Application

Answer

Transport

Answer

Network

Answer

Data Link

Question 3

In a star network topology, how are devices connected?

Accepted Answer

To a central hub or switch

Answer

In a linear fashion, resembling a bus

Answer

In a closed loop, passing data in one direction

Answer

Directly to all other devices on the network

Question 4

Which protocol is specifically designed for sending electronic mail messages over a network?

Accepted Answer

SMTP

Answer

HTTP

Answer

FTP

Answer

DHCP

Question 5

Which of the following is NOT a type of cloud computing service model?

Accepted Answer

Network as a Service (NaaS)

Answer

Software as a Service (SaaS)

Answer

Platform as a Service (PaaS)

Answer

Infrastructure as a Service (IaaS)

Question 6

In network communication, how do routers and switches differ in their roles of facilitating data transfer between devices?

Accepted Answer

Routers direct data between networks, while switches handle data movement within a network.

Answer

Switches direct data between networks, while routers handle data movement within a network.

Answer

Routers and switches perform identical functions, directing data based on destination addresses.

Question 7

Which network topology involves each computer being connected to every other computer in the network?

Accepted Answer

Mesh topology

Answer

Bus topology

Answer

Ring topology

Answer

Star topology

Question 8

Which type of network device filters network traffic based on predefined rules?

Accepted Answer

Firewall

Answer

Router

Answer

Switch

Answer

Modem

Question 9

What is the main purpose of a modem?

Accepted Answer

To connect to the Internet

Answer

To translate IP addresses

Answer

To encrypt data

Answer

To store network configurations

Question 10

Which of the following is NOT a key characteristic of cloud computing?

Accepted Answer

Physical control over hardware

Answer

Scalability

Answer

Reduced costs

Answer

Improved security

Question 11

What is the purpose of a proxy server?

Accepted Answer

To act as an intermediary between a client and a server

Answer

To encrypt data

Answer

To filter traffic

Answer

To provide remote access to a network

Question 12

Which of the following is the primary purpose of a network protocol?

Accepted Answer

To define the rules and procedures for communication between devices on a network

Answer

To establish physical connections between devices on a network

Answer

To provide security measures to protect network traffic

Answer

To manage network resources, such as bandwidth and IP addresses

Question 13

Which network topology involves devices connected in a circular or closed loop, with data transmitted in one direction?

Accepted Answer

Ring topology

Answer

Bus topology

Answer

Star topology

Answer

Mesh topology

Question 14

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

Accepted Answer

To protect a network from unauthorized access and threats

Answer

To establish connections between different networks

Answer

To route network traffic between devices

Answer

To provide internet connectivity to devices on the network

Question 15

What is the main purpose of a MAC address?

Accepted Answer

To uniquely identify a specific device on a network

Answer

To route network traffic between devices

Answer

To provide security for network communication

Answer

To store and manage network data

Question 16

In the TCP/IP model, which layer is responsible for managing the delivery and routing of data packets?

Accepted Answer

Network layer

Answer

Application layer

Answer

Transport layer

Answer

Data link layer

Question 17

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

Accepted Answer

To route network traffic between different networks

Answer

To connect devices within a local area network (LAN)

Answer

To provide internet access to devices on the network

Answer

To store and manage network data

Question 18

What is the purpose of a subnet mask in a network?

Accepted Answer

To divide a network into smaller subnetworks

Answer

To assign IP addresses to devices on a network

Answer

To control access to network resources

Answer

To improve network performance

Question 19

Which protocol ensures reliable communication by establishing a connection, guaranteeing delivery, and implementing flow control?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

UDP (User Datagram Protocol)

Question 20

Which network topology arranges devices in a linear structure, with each device connected to two others?

Accepted Answer

Bus

Answer

Star

Answer

Ring

Answer

Mesh

Question 21

Which network device forwards data packets based on their destination IP addresses?

Accepted Answer

Router

Answer

Switch

Answer

Bridge

Answer

Modem

Question 22

Which protocol encrypts data transmitted over a network, ensuring secure communication?

Accepted Answer

HTTPS

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 23

What is the primary objective of a firewall?

Accepted Answer

Controlling network traffic based on security rules

Answer

Improving network speed and reliability

Answer

Providing access to external networks

Answer

Storing and managing network data

Question 24

Which cloud computing service model provides the highest level of control and flexibility?

Accepted Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Function as a Service (FaaS)

Question 25

What is the primary function of a network operating system?

Accepted Answer

Managing and coordinating network resources

Answer

Providing internet access

Answer

Connecting devices on a network

Answer

Storing and processing network data

Question 26

In the OSI model, which layer is primarily responsible for establishing, managing, and terminating network connections?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 27

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

Accepted Answer

To resolve domain names to IP addresses

Answer

To establish network connections

Answer

To transfer files over the internet

Answer

To protect networks from unauthorized access

Question 28

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

Accepted Answer

To prevent unauthorized access and protect against cyber threats

Answer

To improve network performance by optimizing traffic flow

Answer

To provide internet connectivity to devices on the network

Answer

To connect different network segments and facilitate communication

Question 29

Which networking device is responsible for connecting multiple computers and allowing them to communicate on a network?

Accepted Answer

Switch

Answer

Gateway

Answer

Router

Answer

Server

Question 30

What is the standard maximum transmission unit (MTU) size for Ethernet frames?

Accepted Answer

1500 bytes

Answer

512 bytes

Answer

2048 bytes

Answer

4096 bytes

Question 31

Which cloud computing service model offers the greatest degree of control and customization for users?

Accepted Answer

Infrastructure as a Service (IaaS)

Answer

Platform as a Service (PaaS)

Answer

Software as a Service (SaaS)

Answer

Function as a Service (FaaS)

Question 32

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

Accepted Answer

To monitor, manage, and troubleshoot network devices and resources

Answer

To provide internet access to devices on the network

Answer

To connect different network segments and facilitate communication

Answer

To protect networks from unauthorized access and cyber threats

Question 33

Which network protocol is essential for routing data across networks?

Accepted Answer

IP

Answer

TCP

Answer

UDP

Answer

ARP

Question 34

Which network component directly connects individual computers to a network?

Accepted Answer

Network Interface Card (NIC)

Answer

Router

Answer

Switch

Answer

Firewall

Question 35

The conversion of digital data into a transmittable signal is called:

Accepted Answer

Modulation

Answer

Demodulation

Answer

Encryption

Answer

Decryption

Question 36

Which network type is designed for connecting devices within a limited area, such as a home or office?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Answer

VPN

Question 37

For a small office where all devices require reliable and efficient connections to each other and a central server, which network topology is most suitable?

Accepted Answer

Star Topology

Answer

Bus Topology

Answer

Ring Topology

Question 38

In cloud computing, which service model provides on-demand access to computing resources that can be scaled up or down as needed, enabling users to manage their computing requirements without the need for physical infrastructure?

Accepted Answer

Infrastructure as a Service (IaaS)

Answer

Software as a Service (SaaS)

Answer

Platform as a Service (PaaS)

Answer

Function as a Service (FaaS)

Question 39

Which of the following is NOT a layer in the TCP/IP model?

Accepted Answer

Presentation Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Network Layer

Question 40

Which network topology connects each node directly to a central hub?

Accepted Answer

Star topology

Answer

Ring topology

Answer

Mesh topology

Answer

Bus topology

Question 41

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

Accepted Answer

To uniquely identify a device on a network.

Answer

To route traffic between networks.

Answer

To provide encryption for network transmissions.

Answer

To store user credentials.

Question 42

Which protocol is primarily responsible for establishing and maintaining a connection between two network devices?

Accepted Answer

TCP

Answer

DNS

Answer

HTTP

Answer

UDP

Question 43

What is the main responsibility of a firewall in a network environment?

Accepted Answer

To monitor and control incoming and outgoing network traffic.

Answer

To provide encrypted connections for network transmissions.

Answer

To route traffic between networks.

Answer

To store and manage network configuration data.

Question 44

What is the function of a subnet mask in a network?

Accepted Answer

To divide a network into smaller logical subnetworks.

Answer

To filter incoming network traffic.

Answer

To route traffic between different networks.

Answer

To provide encryption for network transmissions.

Question 45

Which layer of the TCP/IP model is responsible for managing the flow of data and ensuring reliable delivery?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Session Layer

Question 46

Which network device connects multiple networks, allowing them to communicate with each other?

Accepted Answer

Router

Answer

Modem

Answer

Firewall

Answer

Hub

Question 47

What is the primary function of a MAC address?

Accepted Answer

Identifying a specific device on a network

Answer

Protecting data from unauthorized access

Answer

Storing IP addresses of other devices

Answer

Routing traffic between networks

Question 48

Which protocol is used for transferring text-based messages via email?

Accepted Answer

SMTP

Answer

HTTP

Answer

TCP

Answer

FTP

Question 49

What is the primary function of a DNS server?

Accepted Answer

Translating domain names into their corresponding IP addresses

Answer

Filtering and blocking malicious traffic

Answer

Hosting websites and website content

Answer

Providing secure communication channels

Question 50

Which of the following is NOT an advantage of using fiber optic cables in a network?

Accepted Answer

Susceptibility to interference

Answer

High bandwidth

Answer

Low latency

Answer

Light weight and flexibility

Question 51

What is the main purpose of a network operating system?

Accepted Answer

To manage network resources and provide services

Answer

To protect the network from cyber threats

Answer

To provide a graphical user interface for users