Computer Networks: Master the Fundamentals of Network Connectivity

Question 1

How does flow control contribute to preventing network congestion in network communication?

Accepted Answer

Flow control restricts the amount of data the receiver can request from the sender at any given time.

Answer

Flow control is only required in wireless networks due to fluctuating data transmission rates.

Answer

Flow control is no longer necessary in modern networks due to ample bandwidth.

Question 2

Which layer is **excluded** from the TCP/IP model?

Accepted Answer

Presentation

Answer

Network Access

Answer

Transport

Answer

Internet

Question 3

What is a defining characteristic of a network protocol?

Accepted Answer

Establishes rules for data exchange between network devices

Answer

Connects network devices physically

Answer

Determines network component layout

Answer

Enables internet access and browsing

Question 4

In the OSI model, which layer is tasked with ensuring reliable data transmission between devices?

Accepted Answer

Transport layer

Answer

Presentation layer

Answer

Data Link layer

Answer

Application layer

Question 5

In the TCP/IP model, which layer is responsible for detecting and correcting errors?

Accepted Answer

Transport

Answer

Network Access

Answer

Internet

Answer

Application

Question 6

Within the OSI model, which layer is primarily tasked with addressing and routing data packets across the network?

Accepted Answer

Network Layer

Answer

Physical Layer

Answer

Transport Layer

Answer

Application Layer

Question 7

Select the layer in the OSI model that is responsible for the actual transmission of bits over a network medium:

Accepted Answer

Physical

Answer

Application

Answer

Transport

Question 8

Within the OSI model, which layer is tasked with ensuring reliable data transmission across a network by managing data flow and error correction?

Accepted Answer

Transport Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Application Layer

Question 9

Which of the following is NOT a layer in the OSI model?

Accepted Answer

Gateway

Answer

Physical

Answer

Transport

Answer

Application

Question 10

In the OSI model, which layer is tasked with ensuring reliable and sequential data transmission?

Accepted Answer

Transport Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Application Layer

Question 11

Which network topology provides the highest level of fault tolerance and performance, but is also the most expensive to implement?

Accepted Answer

Mesh

Answer

Bus

Answer

Star

Answer

Ring

Question 12

In the OSI model, which layer is responsible for setting up and managing communication sessions between devices?

Accepted Answer

Session Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Application Layer

Question 13

In the OSI model, which layer is responsible for routing data across a network, selecting the most efficient path for data transmission?

Accepted Answer

Network Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Transport Layer

Question 14

Which of the following statements best describes the OSI model?

Accepted Answer

A conceptual framework for network communication, organized into seven layers.

Answer

A set of protocols used to establish network connections.

Answer

A model only applicable to wired network configurations.

Answer

An outdated concept with limited relevance in modern networking.

Question 15

Arrange the layers of the OSI model in the correct sequence, beginning with the physical layer.

Accepted Answer

Physical, Data Link, Network, Transport, Session, Presentation, Application

Answer

Application, Presentation, Session, Transport, Network, Data Link, Physical

Answer

Physical, Data Link, Transport, Network, Session, Presentation, Application

Answer

Application, Presentation, Transport, Data Link, Network, Session, Physical

Question 16

Within the OSI model, which layer is responsible for directing data across devices connected to a network?

Accepted Answer

Network layer

Answer

Physical layer

Answer

Transport layer

Question 17

Which protocol is used to establish and maintain connections between devices on a network?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

DNS

Question 18

Which network topology offers the greatest redundancy?

Accepted Answer

Mesh Topology

Answer

Bus Topology

Answer

Star Topology

Answer

Ring Topology

Question 19

What is the primary purpose of a MAC address on a network?

Accepted Answer

To uniquely identify a specific device

Answer

To route traffic between devices

Answer

To provide network security

Answer

To store user data

Question 20

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

Accepted Answer

Forwarding data packets across networks

Answer

Connecting devices to the network

Answer

Providing network security

Answer

Storing user data

Question 21

Which of the following is NOT a type of wireless network security protocol?

Accepted Answer

SSL

Answer

WEP

Answer

WPA

Answer

WPA2

Question 22

In a star topology network, which device acts as a central hub connecting all other devices?

Accepted Answer

Switch

Answer

Server

Answer

Router

Answer

Modem

Question 23

Which layer in the OSI model is responsible for providing error correction and flow control during data transmission?

Accepted Answer

Transport layer

Answer

Physical layer

Answer

Data link layer

Answer

Network layer

Question 24

Which fundamental protocol suite forms the basis of the Internet and provides reliable data transmission over different networks?

Accepted Answer

TCP/IP

Answer

UDP/IP

Answer

HTTP/SSL

Answer

FTP/SSH

Question 25

Which network security measure involves using mathematical algorithms to transform data into an unintelligible format?

Accepted Answer

Encryption

Answer

Authentication

Answer

Authorization

Answer

Firewalls

Question 26

Which of the following is NOT a purpose of a network mask?

Accepted Answer

Translating domain names into IP addresses

Answer

Dividing an IP address into network and host portions

Answer

Determining the size of a subnet

Answer

Ensuring the uniqueness of IP addresses

Question 27

In Windows, which command can be used to display detailed information about network connections and IP configurations?

Accepted Answer

ipconfig

Answer

netstat

Answer

route

Answer

ping

Question 28

Which of the following devices is used to interconnect multiple networks and facilitate communication between them?

Accepted Answer

Router

Answer

Modem

Answer

Switch

Answer

Hub

Question 29

Which type of malware is known for encrypting files on a victim's computer and demanding a ransom payment to decrypt them?

Accepted Answer

Ransomware

Answer

Phishing

Answer

Keylogger

Answer

Trojan horse

Question 30

Which physical topology connects devices in a computer network by using a single shared transmission medium?

Accepted Answer

Bus

Answer

Star

Answer

Ring

Answer

Mesh

Question 31

Which layer of the OSI model is primarily responsible for providing end-to-end data transfer services?

Accepted Answer

Transport Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Network Layer

Question 32

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

Accepted Answer

To prevent unauthorized access to and from a network

Answer

To connect different types of networks

Answer

To troubleshoot network problems

Answer

To store network data

Question 33

What is the key difference between a router and a switch?

Accepted Answer

A router connects different networks, while a switch connects devices within the same network

Answer

A router is faster than a switch

Answer

A switch is more secure than a router

Answer

There is no difference between a router and a switch

Question 34

What is the primary objective of network management?

Accepted Answer

To ensure the reliability, efficiency, and security of a network

Answer

To configure and maintain network devices

Answer

To troubleshoot network problems

Answer

To protect a network from security threats

Question 35

Which type of malware encrypts files and demands a ransom payment to decrypt them?

Accepted Answer

Ransomware

Answer

Virus

Answer

Trojan

Answer

Adware

Question 36

What is the purpose of a demilitarized zone (DMZ) in a network?

Accepted Answer

To isolate a less-trusted network from a more-trusted network

Answer

To store sensitive data

Answer

To perform network backups

Answer

To connect different types of networks

Question 37

In the OSI model, which layer is responsible for routing data packets based on their destination addresses?

Accepted Answer

Network Layer

Answer

Data Link Layer

Answer

Transport Layer

Answer

Application Layer

Question 38

Which transport layer protocol ensures reliable and sequenced delivery of data between two hosts?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

FTP

Question 39

Which network topology provides multiple paths for data transmission, enhancing fault tolerance?

Accepted Answer

Mesh Topology

Answer

Bus Topology

Answer

Star Topology

Answer

Ring Topology

Question 40

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

Accepted Answer

To regulate incoming and outgoing network traffic based on security rules

Answer

To optimize network performance by caching frequently accessed data

Answer

To provide secure data storage for sensitive information

Answer

To translate domain names into corresponding IP addresses

Question 41

What is the term used to describe the systematic process of identifying, diagnosing, and resolving network issues?

Accepted Answer

Network Troubleshooting

Answer

Network Monitoring

Answer

Network Analysis

Answer

Network Optimization

Question 42

To check the status of a network interface in a Linux operating system, which command would you use?

Accepted Answer

ifconfig

Answer

netstat

Answer

ping

Answer

traceroute

Question 43

How can we obtain the IP address of a server hosting a website with the domain name example.com?

Accepted Answer

Using a Domain Name System (DNS) lookup

Answer

Checking the website's HTML code

Answer

Pinging the domain name

Answer

It cannot be determined without additional information

Question 44

Which type of encryption involves using different keys for encryption and decryption, providing enhanced security?

Accepted Answer

Asymmetric Encryption

Answer

Symmetric Encryption

Answer

Hashing

Answer

Digital Signature

Question 45

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

Accepted Answer

Routing data packets between different networks

Answer

Connecting devices to a network

Answer

Providing security for the network

Answer

Translating domain names into IP addresses

Question 46

Which characteristic distinguishes a wide area network (WAN) from other types of networks?

Accepted Answer

Covers a wide geographic area

Answer

Operates at extremely high speeds

Answer

Primarily uses wireless technologies

Answer

Supports only a small number of connected devices

Question 47

In the TCP/IP model, which layer is tasked with routing data packets across a network?

Accepted Answer

Internet Layer

Answer

Network Access Layer

Answer

Transport Layer

Question 48

Within the OSI model, which layer is responsible for ensuring reliable data transmission and error control?

Accepted Answer

Transport

Answer

Application

Answer

Network

Answer

Physical

Question 49

Which network topology offers the highest level of redundancy, ensuring that data can still be transmitted even if one or more connections fail?

Accepted Answer

Mesh

Answer

Bus

Answer

Ring

Answer

Star

Question 50

In the OSI model, which layer is primarily responsible for ensuring that data is sent and received in the correct order, without errors?

Accepted Answer

Transport

Answer

Network

Answer

Session

Answer

Application

Question 51

Which protocol is used to translate domain names, such as 'google.com', into their corresponding IP addresses, enabling us to access websites?

Accepted Answer

DNS

Answer

HTTP

Answer

DHCP

Answer

FTP

Question 52

In a computer network, what is the primary purpose of a firewall?

Accepted Answer

To prevent unauthorized access to the network and protect it from external threats

Answer

To enhance network performance by optimizing data flow

Answer

To securely store sensitive data and prevent unauthorized access

Answer

To monitor network traffic and analyze its patterns

Question 53

What is the fundamental difference between UDP and TCP, two commonly used network protocols?

Accepted Answer

UDP is a connectionless protocol, while TCP is a connection-oriented protocol, establishing a virtual connection before data transfer

Answer

TCP is significantly faster than UDP, ensuring rapid data transmission

Answer

UDP provides higher reliability and error checking compared to TCP

Answer

There is no significant difference between UDP and TCP in terms of their functionality

Question 54

Which type of network cable is predominantly used for high-speed data transmission over extended distances, supporting bandwidth-intensive applications?

Accepted Answer

Fiber optic cable

Answer

Coaxial cable

Answer

Twisted pair cable

Answer

USB cable

Question 55

On Ethernet networks, what is the standard value for the maximum transmission unit (MTU), which defines the largest size of data packets that can be transmitted without fragmentation?

Accepted Answer

1500 bytes

Answer

512 bytes

Answer

2000 bytes

Answer

4096 bytes

Question 56

In the OSI model, which layer establishes and manages the connection between hosts, ensuring reliable data transfer?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 57

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

Accepted Answer

Identifying a specific device connected to the network

Answer

Routing data packets between devices

Answer

Providing encryption for network traffic

Answer

Storing data temporarily for processing

Question 58

Which network topology is commonly used in business environments, where devices are connected to a central hub or switch?

Accepted Answer

Star Topology

Answer

Bus Topology

Answer

Ring Topology

Answer

Mesh Topology

Question 59

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

Accepted Answer

Preventing unauthorized access and malicious activity

Answer

Optimizing network performance

Answer

Diagnosing network issues

Answer

Encrypting network data

Question 60

For transmitting data across the internet, which protocol is primarily used?

Accepted Answer

TCP/IP

Answer

HTTP

Answer

FTP

Answer

UDP

Question 61

In the context of network data transmission, what is the process of dividing a message into smaller units for efficient transfer called?

Accepted Answer

Fragmentation

Answer

Encryption

Answer

Checksumming

Answer

Buffering

Question 62

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

Accepted Answer

Interconnecting different networks, facilitating communication

Answer

Connecting multiple devices within a network

Answer

Providing enhanced security to the network

Answer

Storing data for long-term retrieval

Question 63

Within the TCP/IP model, which layer is tasked with determining the path data packets traverse through a network?

Accepted Answer

Internet Layer

Answer

Network Access Layer

Answer

Transport Layer

Answer

Application Layer

Question 64

Which of the following is NOT a layer in the OSI model?

Accepted Answer

Gateway

Answer

Physical

Answer

Application

Answer

Transport