Network Fundamentals: Master the Basics of Computer Networks

Question 1

In a mesh network, how are devices connected?

Accepted Answer

Each device connects to all other devices.

Answer

Each device connects to only one other device.

Answer

Each device connects to exactly two other devices.

Answer

Devices are not directly connected to each other.

Question 2

Which network topology provides the highest level of redundancy and resilience to failures?

Accepted Answer

Mesh

Answer

Bus

Answer

Star

Answer

Ring

Question 3

Which layer is not included in the OSI model?

Accepted Answer

Network Access

Answer

Physical

Answer

Transport

Answer

Application

Question 4

In a star network topology, which device is the central connection point for all other devices?

Accepted Answer

Hub

Answer

Router

Answer

Switch

Answer

Server

Question 5

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

Accepted Answer

To connect different networks using different protocols

Answer

To connect devices within the same network

Answer

To provide security and access control

Answer

To store and manage network data

Question 6

Which protocol is responsible for communication between web browsers and web servers?

Accepted Answer

HTTP

Answer

TCP/IP

Answer

SMTP

Answer

DNS

Question 7

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

Accepted Answer

To prevent unauthorized access

Answer

To enhance network performance

Answer

To store network data

Answer

To provide internet connectivity

Question 8

What is the significance of a MAC address?

Accepted Answer

It uniquely identifies individual devices on a network

Answer

It assigns IP addresses to devices

Answer

It enhances network security

Answer

It stores user preferences

Question 9

Which characteristic is unique to wireless networks?

Accepted Answer

Support for mobile device connections

Answer

Use of cables for connectivity

Answer

Enhanced security compared to wired networks

Answer

Requirement for direct line-of-sight between devices

Question 10

What is the primary function of a DNS server?

Accepted Answer

Translating domain names into IP addresses

Answer

Providing email services

Answer

Storing website content

Answer

Protecting against network attacks

Question 11

How does a switch differ from a hub in terms of network traffic handling?

Accepted Answer

A switch forwards traffic to specific destinations, while a hub broadcasts to all ports

Answer

A hub forwards traffic to specific destinations, while a switch broadcasts to all ports

Answer

Both switches and hubs forward traffic to all ports

Answer

Both switches and hubs isolate traffic to specific destinations

Question 12

What is the main purpose of a firewall?

Accepted Answer

To prevent unauthorized access to a network.

Answer

To detect and block malicious software.

Answer

To encrypt network traffic.

Answer

To provide backup and recovery for network data.

Question 13

What is the OSI model?

Accepted Answer

A seven-layer framework for understanding network communication.

Answer

A set of protocols used for data transmission.

Answer

A type of network topology.

Answer

A cloud computing platform.

Question 14

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

Accepted Answer

Star

Answer

Bus

Answer

Ring

Answer

Mesh

Question 15

Which network device is responsible for connecting different networks?

Accepted Answer

Router

Answer

Switch

Answer

Hub

Answer

Modem

Question 16

What is the primary purpose of a MAC address?

Accepted Answer

Identifying a specific network interface card

Answer

Routing traffic between networks

Answer

Encrypting data transmissions

Answer

Providing access to network resources

Question 17

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

Accepted Answer

Transport layer

Answer

Application layer

Answer

Network layer

Answer

Data link layer

Question 18

Which type of network device allows multiple computers to communicate on the same network?

Accepted Answer

Switch

Answer

Router

Answer

Gateway

Answer

Modem

Question 19

What is the purpose of a subnet mask?

Accepted Answer

To define the network portion of an IP address

Answer

To assign IP addresses to devices on a network

Answer

To enhance network security

Answer

To improve network performance

Question 20

Which of the following protocols is used for transferring email messages?

Accepted Answer

SMTP

Answer

HTTP

Answer

FTP

Answer

DNS

Question 21

What is the main difference between a local area network (LAN) and a wide area network (WAN)?

Accepted Answer

LANs are smaller in size and typically limited to a single building, while WANs span larger geographic areas

Answer

LANs use wired connections, while WANs use wireless connections

Answer

LANs are private networks, while WANs are public networks

Answer

There is no difference between LANs and WANs

Question 22

Which of the following is NOT a security risk associated with wireless networks?

Accepted Answer

Physical damage to network cables

Answer

Unauthorized access to data

Answer

Interception of wireless signals

Answer

Spread of malware

Question 23

What is the primary function of a domain name system (DNS) server?

Accepted Answer

To translate domain names into IP addresses

Answer

To store user passwords

Answer

To manage email traffic

Answer

To provide internet access

Question 24

What is the purpose of a firewall?

Accepted Answer

To prevent unauthorized access to a network or system

Answer

To improve network performance

Answer

To detect and remove viruses

Answer

To manage network traffic

Question 25

which of the following is not considered a common network topology?

Accepted Answer

Hierarchy

Answer

Bus

Answer

Star

Answer

Ring

Question 26

What is the primary function of a MAC address?

Accepted Answer

Uniquely identifying devices on a network

Answer

Routing packets between networks

Answer

Establishing secure connections between devices

Answer

Storing user data

Question 27

Which layer of the OSI model handles error detection and correction?

Accepted Answer

Data Link

Answer

Physical

Answer

Network

Answer

Transport

Question 28

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

Accepted Answer

Connecting different networks

Answer

Providing internet access

Answer

Storing data and files

Answer

Protecting the network from threats

Question 29

Which network protocol is utilized for web browsing?

Accepted Answer

HTTP

Answer

TCP

Answer

UDP

Answer

FTP

Question 30

What is the primary advantage of using a fiber optic cable over a copper cable?

Accepted Answer

Increased bandwidth and reduced signal loss

Answer

Lower cost and simplified installation

Answer

Enhanced security and reliability

Answer

Elimination of electromagnetic interference

Question 31

What is the primary purpose of a subnet mask?

Accepted Answer

Dividing a network into smaller segments

Answer

Assigning unique identifiers to network devices

Answer

Determining the maximum number of devices on a network

Answer

Filtering incoming traffic and preventing unauthorized access

Question 32

Which of the following is NOT a fundamental principle of information security?

Accepted Answer

Reliability

Answer

Confidentiality

Answer

Integrity

Answer

Availability

Question 33

What's the correct order for troubleshooting a network issue?

Accepted Answer

1. Identify the problem. 2. Gather information. 3. Analyze the data. 4. Implement a solution. 5. Verify the solution.

Answer

1. Identify the problem. 2. Gather information. 3. Test the solution. 4. Implement the solution. 5. Verify the solution.

Answer

1. Identify the problem. 2. Gather information. 3. Analyze the data. 4. Implement a solution. 5. Test the solution.

Answer

1. Identify the problem. 2. Test the solution. 3. Gather information. 4. Analyze the data. 5. Implement the solution.

Question 34

Within the Open Systems Interconnection (OSI) model, which layer is responsible for detecting and correcting errors in data transmission?

Accepted Answer

Data Link Layer

Answer

Application Layer

Answer

Network Layer

Question 35

Select the layer in the TCP/IP model responsible for providing network addressing and routing.

Accepted Answer

Network layer

Answer

Application layer

Answer

Transport layer

Answer

Data Link layer

Question 36

Which network device is used to interconnect networks operating at different data link layer protocols?

Accepted Answer

Bridge

Answer

Router

Answer

Switch

Answer

Hub

Question 37

Which characteristic is unique to fiber optic cables?

Accepted Answer

Resistance to electromagnetic interference

Answer

Ease of termination

Answer

High susceptibility to signal degradation

Answer

Low transmission speeds

Question 38

What is the primary purpose of a subnet mask?

Accepted Answer

To divide a network into subnetworks

Answer

To assign IP addresses to hosts

Answer

To filter network traffic based on IP addresses

Answer

To provide fault tolerance for network connections

Question 39

Which cloud computing service model provides users with access to computational resources, storage, and networking on demand?

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 40

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

Accepted Answer

To prevent unauthorized access to network resources

Answer

To detect and respond to malicious network activity

Answer

To optimize network performance by prioritizing traffic

Answer

To provide backup and recovery capabilities for network data

Question 41

Which type of malware can replicate itself and spread to other computers through network connections?

Accepted Answer

Worm

Answer

Virus

Answer

Trojan horse

Answer

Spyware

Question 42

Which of the following statements accurately describes the relationship between the TCP/IP model and the OSI model?

Accepted Answer

The OSI model is more complex than the TCP/IP model.

Accepted Answer

The TCP/IP model is more widely used than the OSI model.

Answer

The TCP/IP model is a theoretical framework, while the OSI model is a practical implementation.

Answer

The TCP/IP model and the OSI model are not related.

Question 43

Which of the following is NOT a recognized network topology?

Accepted Answer

Daisy-chain

Answer

Bus

Answer

Ring

Answer

Star

Question 44

What is the primary function of a MAC address?

Accepted Answer

To uniquely identify a device on a network

Answer

To store data on a network

Answer

To connect devices wirelessly

Answer

To assign an IP address to a device

Question 45

Which of the given options is classified as a layer 3 network protocol in the TCP/IP model?

Accepted Answer

IP

Answer

UDP

Answer

Ethernet

Answer

TCP

Question 46

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

Accepted Answer

To route data packets between networks

Answer

To store data on a network

Answer

To connect computers to a network

Question 47

Which of the following characteristics is typically associated with a Wide Area Network (WAN)?

Accepted Answer

Covers a large geographical area

Answer

Has low bandwidth

Answer

Uses only wired connections

Answer

Is primarily used for home networks

Question 48

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

Accepted Answer

To protect a network from unauthorized access and potential threats

Answer

To store data on a network

Answer

To speed up network traffic

Answer

To connect devices wirelessly

Question 49

What is the key difference between TCP and UDP protocols in network communication?

Accepted Answer

TCP is connection-oriented, while UDP is connectionless

Answer

UDP is more reliable than TCP

Answer

TCP is faster than UDP

Question 50

What is a primary benefit of using a network management system?

Accepted Answer

Provides centralized monitoring and control of network devices

Answer

Reduces network performance

Answer

Increases network security risks

Question 51

What is the main purpose of a Domain Name System (DNS) server?

Accepted Answer

To translate domain names into their corresponding IP addresses

Answer

To provide network security

Answer

To connect users to the internet

Answer

To store website content