Computer Networks: Master the Fundamentals of Network Connectivity

Question 1

What is the primary function of the Transmission Control Protocol (TCP)?

Accepted Answer

Establish a reliable connection between two devices.

Answer

Provide a direct connection for data transfer.

Answer

Translate website addresses into numerical IP addresses.

Answer

Securely encrypt data during transmission.

Question 2

In a star network topology, how are devices typically connected?

Accepted Answer

To a central switch or hub

Answer

In a linear fashion, with each device connected to two other devices

Answer

In a ring, with each device connected to two other devices

Answer

Wirelessly, without the use of any cables

Question 3

In the TCP/IP model, which layer manages connections between devices?

Accepted Answer

Transport Layer

Answer

Network Access Layer

Answer

Application Layer

Answer

Session Layer

Question 4

Which of the following is **not** a valid network topology?

Accepted Answer

Spider-Man topology

Answer

Bus topology

Answer

Star topology

Answer

Ring topology

Question 5

In the TCP/IP model, which layer is responsible for dividing data into packets and adding header information?

Accepted Answer

Network

Answer

Application

Answer

Transport

Answer

Data Link

Question 6

What is the difference between a network topology and a network protocol? Which of the following is a network protocol?

Accepted Answer

TCP/IP

Answer

Bus

Answer

Star

Answer

Ring

Question 7

How does a well-organized network topology make it easier to manage a network?

Accepted Answer

It simplifies adding new devices and expanding the network.

Answer

It enhances network security.

Answer

It lowers maintenance costs.

Answer

It speeds up data transfer.

Question 8

Which network topology connects devices in a circular path?

Accepted Answer

Ring topology

Answer

Bus topology

Answer

Star topology

Answer

Tree topology

Question 9

In a star network topology, computers and devices connect through a central hub. What's the main purpose of this central hub in enabling network communication?

Accepted Answer

Act as a central connection point, allowing communication among all connected devices.

Answer

Directly manage traffic flow between all connected devices.

Answer

Assign IP addresses to all connected devices on the network.

Answer

Perform complex calculations and computations for processing data.

Question 10

What is the primary function of the Domain Name System (DNS) in a computer network?

Accepted Answer

Translating domain names into numerical IP addresses

Answer

Assigning unique IP addresses to devices on the network

Answer

Protecting networks from cyber threats

Answer

Managing the flow of data packets across the network

Question 11

Which of these is NOT a type of physical network topology?

Accepted Answer

Loop

Answer

Bus

Answer

Star

Answer

Ring

Question 12

In a star network topology, how are the devices connected?

Accepted Answer

To a central hub or switch

Answer

To each other

Answer

To a single cable

Answer

In a circular fashion

Question 13

Which of these is a part of a computer network?

Accepted Answer

Network card

Answer

Web browser

Answer

Operating system

Question 14

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

Accepted Answer

Star topology

Answer

Bus topology

Answer

Ring topology

Question 15

In a star network topology, how do computers connect to one another?

Accepted Answer

Via a central hub or switch

Answer

Directly to each other

Answer

In a circular pattern

Question 16

In the context of computer networks, which of the following is a disadvantage?

Accepted Answer

Increased security vulnerabilities

Answer

Enhanced communication and collaboration

Answer

Efficient sharing of resources

Question 17

Which of the following is a disadvantage of using a network?

Accepted Answer

Increased security risks

Answer

Sharing files and printers

Answer

Easier communication and collaboration

Answer

Cost savings

Question 18

What is the primary function of the Domain Name System (DNS) in computer networks?

Accepted Answer

Translating website addresses into IP addresses

Answer

Assigning IP addresses to network devices

Answer

Encrypting network communications

Answer

Storing user passwords and account details

Question 19

In a computer network, which device is responsible for directing data packets to their intended destinations?

Accepted Answer

Router

Answer

Network Interface Card (NIC)

Answer

Modem

Answer

Firewall

Question 20

Which of the following is **not** a primary function of the Domain Name System (DNS)?

Accepted Answer

Sending and receiving emails

Answer

Translating domain names to IP addresses

Answer

Storing recently resolved domain name and IP address pairs

Question 21

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

Accepted Answer

Star

Answer

Bus

Answer

Ring

Answer

Mesh

Question 22

You want to share an important file with your friend who lives in another country. How does your computer prepare the file so that it can be sent over the internet?

Accepted Answer

Using a network protocol

Answer

Creating a network topology

Answer

Implementing network security measures

Question 23

In a network with a full mesh topology, how are devices interconnected?

Accepted Answer

Each device is connected to every other device on the network.

Answer

Each device is connected to a central hub.

Answer

Each device is connected to a central router.

Answer

Each device is connected to the internet through a modem.

Question 24

Which OSI model layer ensures data integrity by incorporating error checking and data sequencing?

Accepted Answer

Data Link Layer

Answer

Application Layer

Answer

Network Layer

Answer

Physical Layer

Question 25

Within the OSI model, which layer is responsible for directing data packets to their intended destination over a network?

Accepted Answer

Network Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Physical Layer

Question 26

In which network topology can computers communicate directly with each other without a central connection point?

Accepted Answer

Bus topology

Answer

Star topology

Answer

Ring topology

Question 27

When troubleshooting network connectivity issues on a computer, what is the first step you should take?

Accepted Answer

Restart the router and modem

Answer

Replace the Ethernet cable

Answer

Adjust the firewall settings

Answer

Reinstall the network drivers

Question 28

What is the primary function of the Domain Name System (DNS) in computer networks?

Accepted Answer

Translating domain names into IP addresses

Answer

Directing network traffic

Answer

Providing secure connections

Answer

Storing user passwords

Question 29

Which protocol is the primary method of communication between devices on the internet?

Accepted Answer

TCP/IP

Answer

FTP

Answer

HTTP

Question 30

Within a computer network, what is the main function of a network protocol?

Accepted Answer

Establish rules and formats for data transmission, ensuring compatibility among devices

Answer

Guarantee secure and encrypted data transmission across the network

Answer

Manage and control access to network resources and data

Answer

Automatically repair and resolve errors that may arise during data transmission

Question 31

In a computer network, what is the term for the way devices are arranged and connected to create the network?

Accepted Answer

Network topology

Answer

Network protocol

Answer

Network security

Answer

Network architecture

Question 32

Which device in a computer network connects multiple computers and manages the flow of data between them?

Accepted Answer

Router

Answer

Network interface card

Question 33

In computer networks, what's the main purpose of data communication?

Accepted Answer

To share info and resources among connected computers in a network.

Answer

To protect data from unauthorized access or corruption during transmission over a network.

Answer

To determine the physical layout and structure of a network, including the arrangement of devices and connections.

Answer

To establish connections between computers and the internet, allowing them to access online resources.

Question 34

What is the purpose of a subnet mask?

Accepted Answer

To divide an IP address into network and host parts.

Answer

To control how data is sent over a network.

Answer

To troubleshoot network issues.

Question 35

What is the primary goal of data communication in computer networks?

Accepted Answer

To enable the exchange of information between devices

Answer

To connect devices within a network

Answer

To manage the flow of data within a network

Question 36

Which layer is NOT part of the TCP/IP model?

Accepted Answer

Error Correction Layer

Answer

Network Access Layer

Answer

Session Layer

Question 37

In a computer network, what is the main purpose of a switch?

Accepted Answer

Connect devices within a network segment

Answer

Convert domain names to IP addresses

Answer

Secure connections between networks

Answer

Manage data flow between networks

Question 38

In the TCP/IP suite, each protocol plays a specific role in data communication. Explain how TCP, IP, HTTP, and FTP contribute to the process of data transmission and internet connectivity.

Accepted Answer

TCP establishes connections, IP assigns addresses, HTTP retrieves web pages, and FTP transfers files.

Answer

IP establishes connections, TCP assigns addresses, HTTP transfers files, and FTP retrieves web pages.

Answer

HTTP establishes connections, IP retrieves web pages, TCP transfers files, and FTP assigns addresses.

Answer

FTP establishes connections, HTTP assigns addresses, TCP retrieves web pages, and IP transfers files.

Question 39

Which advantage does a star network topology offer over bus and ring topologies?

Accepted Answer

Easier expansion and reconfiguration

Answer

More reliable connections

Answer

Lower implementation costs

Answer

Higher data transmission speeds

Question 40

How does a Domain Name System (DNS) server help users access websites? Explain the process of resolving domain names to IP addresses.

Accepted Answer

A DNS server translates domain names (like example.com) into IP addresses (like 192.168.1.1), allowing devices to connect to websites.

Answer

A DNS server assigns unique IP addresses to websites, ensuring their distinct identities on the internet.

Answer

A DNS server converts IP addresses into domain names, making it easier for users to remember and access websites.

Question 41

What is the primary purpose of a network protocol?

Accepted Answer

To establish rules for communication between devices on a network

Answer

To provide security for network traffic

Answer

To manage network resources

Answer

To prevent network congestion

Question 42

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

Accepted Answer

To forward packets between networks

Answer

To connect devices within a network

Answer

To provide internet access

Answer

To protect the network from security threats

Question 43

What is the purpose of a MAC address?

Accepted Answer

To uniquely identify a specific device on a network

Answer

To determine the IP address of a device

Answer

To provide security for network traffic

Answer

To manage network resources

Question 44

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

Accepted Answer

LANs connect devices within a small geographic area, while WANs connect devices over a larger geographical area

Answer

WANs connect devices within a small geographical area, while LANs connect devices over a larger geographical area

Answer

LANs provide higher security than WANs

Answer

WANs provide higher security than LANs

Question 45

What is the purpose of a network operating system (NOS)?

Accepted Answer

To manage network resources and provide services to network users

Answer

To provide security for network traffic

Answer

To connect devices within a network

Answer

To forward packets between networks

Question 46

What is the purpose of MAC addresses in network communication? How do they contribute to network security and device identification?

Accepted Answer

MAC addresses are unique identifiers assigned to network devices, allowing for individual identification and communication within a network.

Answer

MAC addresses are used to route network traffic, ensuring that data is sent to the correct destination.

Answer

MAC addresses are only relevant in wireless networks for device identification.

Answer

MAC addresses have no significance in network security.

Question 47

How does network redundancy contribute to network reliability?

Accepted Answer

Minimizes the impact of network failures

Answer

Improves network efficiency

Answer

Reduces network maintenance costs

Question 48

Which of the following is a method used to trick users into revealing sensitive information, rather than a network security measure?

Accepted Answer

Phishing

Answer

Firewall

Answer

Intrusion detection system

Answer

Encryption

Question 49

Why is network monitoring and management crucial for maintaining a reliable and efficient computer network?

Accepted Answer

To ensure continuous network availability and optimize performance.

Answer

To only monitor network traffic.

Answer

To only respond to network issues after they occur.

Answer

To manage network devices without monitoring performance.

Question 50

Which key difference between TCP and UDP protocols affects their suitability for different applications in computer networks?

Accepted Answer

TCP guarantees reliable data delivery, while UDP does not.

Answer

UDP allows multiple simultaneous connections, unlike TCP.

Answer

TCP is designed for high-speed networks, while UDP is better for low-speed networks.

Question 51

In a star network topology, how are the computers connected?

Accepted Answer

To a central hub or switch

Answer

To each other in a linear chain

Answer

In a circular pattern

Answer

To a mesh of interconnected nodes

Question 52

Which network security measure protects against malicious software and viruses?

Accepted Answer

Antivirus

Answer

Encryption

Answer

Firewall

Answer

Authentication

Question 53

To create a basic computer network, the minimum number of devices required is:

Accepted Answer

2

Answer

0

Answer

1

Answer

3

Question 54

What is the main purpose of a network operating system?

Accepted Answer

To manage network resources and provide network services

Answer

To provide a graphical user interface for users

Answer

To run software applications

Answer

To store and manage user data

Question 55

Which data transmission method allows data to be transmitted over fiber optic cables?

Accepted Answer

Fiber optics

Answer

Ethernet

Answer

Wi-Fi

Answer

Cellular

Question 56

What is the primary function of an IP address?

Accepted Answer

To identify a specific device on a network

Answer

To provide a secure connection

Answer

To store user data

Answer

To translate domain names into IP addresses

Question 57

Which protocol is primarily used for establishing and maintaining a connection between two computers?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

FTP

Question 58

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

Accepted Answer

To prevent unauthorized access

Answer

To connect computers

Answer

To transfer data

Answer

To encrypt information

Question 59

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

Accepted Answer

To forward data packets

Answer

To connect devices to the internet

Answer

To provide security

Answer

To store files

Question 60

What is the main purpose of using a Virtual Private Network (VPN)?

Accepted Answer

To encrypt internet traffic

Answer

To bypass regional restrictions

Answer

To improve network performance

Answer

To access blocked websites

Question 61

Which network topology connects all devices to a central hub?

Accepted Answer

Star topology

Answer

Bus topology

Answer

Ring topology

Answer

Mesh topology

Question 62

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

Accepted Answer

To block unauthorized access

Answer

To connect devices

Answer

To provide internet access

Answer

To store data

Question 63

Which of the following network protocols is commonly used for sending and receiving email?

Accepted Answer

SMTP

Answer

HTTP

Answer

TCP

Answer

UDP

Question 64

What is the purpose of a MAC address in a computer network?

Accepted Answer

To identify a specific device

Answer

To store data

Answer

To provide internet access

Answer

To connect multiple devices