Computer Networks: Master Networking Concepts with Interactive Quizzes

Question 1

In the Open Systems Interconnection (OSI) model, which layer is responsible for directing packets to their intended destinations based on their addresses?

Accepted Answer

Network layer

Answer

Application layer

Answer

Transport layer

Answer

Data Link layer

Question 2

Within the TCP/IP model, which transport layer protocol ensures reliable and sequential data delivery?

Accepted Answer

TCP

Answer

UDP

Answer

HTTP

Answer

FTP

Question 3

In the OSI model, which layer is responsible for the physical transmission of data?

Accepted Answer

Physical Layer

Answer

Application Layer

Answer

Network Layer

Answer

Transport Layer

Question 4

In the OSI model, what is the correct order of the layers, starting from the lowest level?

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 5

In the TCP/IP model, which layer ensures reliable data transmission?

Accepted Answer

Transport

Answer

Application

Answer

Session

Answer

Network Access

Question 6

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

Accepted Answer

Data Link

Answer

Application

Answer

Transport

Answer

Network

Question 7

Which of the following is a key characteristic of the TCP/IP protocol suite used on the Internet?

Accepted Answer

Hierarchical addressing system

Answer

Connectionless protocol

Answer

Limited to small, local area networks

Answer

Closed protocol owned by a single company

Question 8

Which layer is unique to the OSI model and not found in the TCP/IP model?

Accepted Answer

Session

Answer

Application

Answer

Transport

Answer

Network

Question 9

In an IPv4 network, what is the maximum number of hosts that can be connected to a single subnet?

Accepted Answer

254

Answer

1022

Answer

4094

Answer

65534

Question 10

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

Accepted Answer

Data link

Answer

Application

Answer

Transport

Answer

Network

Question 11

Within the TCP/IP model, which layer handles error correction and flow control?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 12

Which layer is NOT part of the OSI model?

Accepted Answer

Security

Answer

Application

Answer

Transport

Answer

Network

Question 13

In the OSI model, which layer is responsible for ensuring error-free data delivery, flow control, and congestion management?

Accepted Answer

Transport

Answer

Application

Answer

Session

Answer

Data Link

Question 14

In the TCP/IP model, which layer is tasked with establishing and maintaining communication channels between hosts?

Accepted Answer

Transport

Answer

Application

Answer

Network

Answer

Data Link

Question 15

Which OSI model layer is responsible for establishing and maintaining network connections?

Accepted Answer

Transport layer

Answer

Physical layer

Answer

Network layer

Answer

Application layer

Question 16

Within the TCP/IP model, which layer is tasked with fragmenting data into packets and assigning addresses for transmission?

Accepted Answer

Network

Answer

Application

Answer

Transport

Answer

Data Link

Question 17

In the OSI model, which layer ensures reliable data transmission?

Accepted Answer

Transport

Answer

Physical

Answer

Network

Answer

Data Link

Question 18

In a token ring network topology, how does data travel from one device to another?

Accepted Answer

Data moves sequentially from one device to the next, in a circular pattern.

Answer

Data is sent to all devices at the same time.

Answer

Data is directed through a central hub device.

Answer

Data is transmitted simultaneously along multiple paths, using a mesh network structure.

Question 19

Within the Open Systems Interconnection (OSI) model, which layer is tasked with providing services directly to user applications?

Accepted Answer

Application layer

Answer

Physical layer

Answer

Data link layer

Answer

Network layer

Question 20

The Open Systems Interconnection (OSI) model is a framework for understanding network communication. Which of the following statements about the OSI model's layers is true?

Accepted Answer

The physical layer handles electrical or electromagnetic signals that encode data.

Accepted Answer

The transport layer ensures reliable data delivery between hosts.

Accepted Answer

The application layer provides user interfaces and applications for accessing network services.

Answer

The OSI model has five layers: physical, data link, network, transport, and application.

Question 21

Which network protocol operates at the Application layer of the TCP/IP model, enabling the transmission of emails across a network?

Accepted Answer

Simple Mail Transfer Protocol (SMTP)

Answer

Internet Protocol (IP)

Answer

File Transfer Protocol (FTP)

Answer

Hypertext Transfer Protocol (HTTP)

Question 22

What is a key advantage of utilizing a cloud-based network infrastructure?

Accepted Answer

Lower hardware expenses

Answer

Boosted network efficiency

Answer

Enhanced data protection

Answer

Restricted scalability

Question 23

In the TCP/IP model, which layer is accountable for guaranteeing reliable data delivery from one end to another?

Accepted Answer

Transport

Answer

Physical

Answer

Data Link

Answer

Application

Question 24

Which network protocol is designed for secure remote login and file transfer over an insecure network?

Accepted Answer

SSH

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 25

Within the TCP/IP model, which layer is tasked with ensuring the reliable transmission of data?

Accepted Answer

Transport layer

Answer

Network layer

Answer

Application layer

Question 26

In a Token Ring network, which method is used to transmit data?

Accepted Answer

Token passing

Answer

Broadcast

Answer

Polling

Answer

Circuit switching

Question 27

Which layer is absent from the TCP/IP model?

Accepted Answer

Data Link

Answer

Application

Answer

Transport

Answer

Network

Question 28

In the Open Systems Interconnection (OSI) model, the Data Link Layer is responsible for which of the following functions?

Accepted Answer

Ensuring reliable and error-free data transmission

Answer

Establishing virtual connections between devices

Answer

Routing data packets across networks

Question 29

In the Open Systems Interconnection (OSI) model, which layer acts as the primary interface between the user and the network?

Accepted Answer

Application layer

Answer

Transport layer

Answer

Network layer

Answer

Data Link layer

Question 30

Which network protocol is used specifically for transferring files?

Accepted Answer

File Transfer Protocol (FTP)

Answer

Hypertext Transfer Protocol (HTTP)

Answer

Domain Name System (DNS)

Answer

Post Office Protocol 3 (POP3)

Question 31

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

Accepted Answer

Data Link

Answer

Application

Answer

Network

Answer

Transport

Question 32

In the TCP/IP model, which layer is responsible for routing and forwarding data packets across networks?

Accepted Answer

Network Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Data Link Layer

Question 33

In computer networks, what is the distinction between unicast, multicast, and broadcast addressing?

Accepted Answer

Unicast: specific device, Multicast: group of devices, Broadcast: all devices

Answer

Unicast: multiple devices, Multicast: specific device, Broadcast: all devices

Answer

Unicast and Multicast: specific device, Broadcast: all devices

Answer

Unicast and Broadcast: all devices, Multicast: specific device

Question 34

Which of these network technologies is still facing significant technical and security hurdles, limiting its widespread adoption?

Accepted Answer

Quantum Networking

Answer

Network Function Virtualization (NFV)

Answer

Software-Defined Networking (SDN)

Answer

Internet of Things (IoT)

Question 35

Compare the strengths and weaknesses of different network security measures, such as firewalls, intrusion detection systems, and encryption techniques.

Accepted Answer

Firewalls provide a strong first line of defense against network threats.

Accepted Answer

Intrusion detection systems can detect and respond to security breaches in real-time.

Accepted Answer

Encryption techniques protect data both while it is being transmitted and at rest.

Question 36

How do emerging technologies like cloud computing, software-defined networking (SDN), and network virtualization influence the design and management of modern networks?

Accepted Answer

These technologies provide network architects and administrators with increased flexibility, automation, and efficiency in network design and management.

Answer

These technologies only make networks more complex, hindering design and management.

Answer

These technologies have little impact on network design and management, as traditional methods suffice.

Answer

These technologies mainly benefit large companies with vast network infrastructures.

Question 37

Within a network, which protocol facilitates data exchange between two computers?

Accepted Answer

TCP/IP

Answer

HTTP

Answer

FTP

Answer

SMTP

Question 38

Identify the topology in which network devices are connected in a circular pattern, allowing for bidirectional data flow.

Accepted Answer

Ring

Answer

Bus

Answer

Star

Answer

Mesh

Question 39

Which type of IP address is permanently assigned to a specific device?

Accepted Answer

Static IP

Answer

Dynamic IP

Answer

Private IP

Answer

Public IP

Question 40

Which security measure employs encryption to protect data transmitted across a network?

Accepted Answer

Encryption

Answer

Firewall

Answer

Authentication

Answer

Access control

Question 41

Which network type is larger than a LAN but smaller than the Internet?

Accepted Answer

MAN

Answer

WAN

Answer

PAN

Answer

CAN

Question 42

Which data transmission method utilizes a continuous signal over a medium?

Accepted Answer

Analog

Answer

Digital

Answer

Modulation

Answer

Demodulation

Question 43

Within the OSI model, which layer handles addressing and routing of data packets?

Accepted Answer

Network

Answer

Physical

Answer

Data Link

Answer

Transport

Question 44

Which network protocol is widely used to enable communication between devices on the Internet?

Accepted Answer

TCP/IP

Answer

HTTP

Answer

SMTP

Answer

FTP

Question 45

Which network topology involves connecting devices in a circular fashion, allowing data to flow in one direction only?

Accepted Answer

Ring

Answer

Bus

Answer

Star

Answer

Mesh

Question 46

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

Accepted Answer

To block unauthorized access to the network

Answer

To detect and prevent malware infections

Answer

To improve network performance

Answer

To monitor network traffic

Question 47

Which network type is characterized by high bandwidth and low latency?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Answer

PAN

Question 48

What is the primary purpose of the DNS protocol?

Accepted Answer

To translate domain names into IP addresses

Answer

To establish connections between devices on a network

Answer

To provide secure data transmission

Answer

To control the flow of data on a network

Question 49

What is the purpose of Media Access Control (MAC) addresses, and how do they operate in network communication?

Accepted Answer

MAC addresses uniquely identify network devices, allowing communication within the same network segment.

Answer

MAC addresses convert domain names to IP addresses, enabling internet communication.

Answer

MAC addresses encrypt data transmissions, ensuring secure network communication.

Answer

MAC addresses assign network addresses to internet-connected devices.

Question 50

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

Accepted Answer

Physical

Answer

Application

Answer

Transport

Answer

Network

Question 51

What is the primary purpose of a MAC address?

Accepted Answer

To uniquely identify a network device

Answer

To route data packets between networks

Answer

To provide a secure connection between two devices

Answer

To store user data

Question 52

Which network topology involves connecting devices in a circular fashion, where each device is connected to two other devices?

Accepted Answer

Ring

Answer

Bus

Answer

Star

Answer

Mesh

Question 53

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

Accepted Answer

To connect different networks together and facilitate data routing

Answer

To assign IP addresses to devices

Answer

To store data for network users

Answer

To provide security protection for network traffic

Question 54

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

Accepted Answer

To block unauthorized access to a network and monitor incoming and outgoing traffic

Answer

To detect and remove viruses from network traffic

Answer

To enhance the speed of data transmission

Answer

To store user passwords and credentials

Question 55

What is the key difference between TCP and UDP protocols?

Accepted Answer

TCP is connection-oriented while UDP is connectionless

Answer

UDP is more reliable than TCP

Answer

TCP is more efficient than UDP

Answer

They both perform the same function

Question 56

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

Accepted Answer

To translate domain names into IP addresses, enabling users to access websites easily

Answer

To provide email services

Answer

To store website content

Answer

To protect against cyber threats

Question 57

Which of the following is a primary benefit of using a virtual private network (VPN)?

Accepted Answer

Enhances privacy and security by encrypting internet traffic

Answer

Allows access to restricted websites

Answer

Increases internet speed

Answer

Provides free Wi-Fi access

Question 58

How do emerging technologies like the Internet of Things (IoT) and 5G affect network design, security, and management?

Accepted Answer

Increase network complexity and introduce new security risks.

Answer

Lower network costs and simplify management.

Answer

Have no significant impact on network architecture.

Answer

Enhance network security and reduce management workload.

Question 59

In a network application where reliable data delivery is crucial, what key advantage does TCP offer over UDP?

Accepted Answer

Guaranteed data delivery

Answer

Faster data transfer

Answer

Lower network overhead

Answer

Suitability for real-time applications

Question 60

How do routing protocols like RIP and OSPF contribute to managing network connectivity and optimizing data flow?

Accepted Answer

They establish pathways for data transmission, ensuring reliable connectivity among network devices.

Answer

They are only effective in small networks, as they cannot handle complex network structures.

Answer

RIP and OSPF are the only available routing protocols, used in all network setups.

Answer

They do not influence data flow optimization, as they solely focus on determining network paths.

Question 61

Within the OSI model, which layer is responsible for routing data packets to their intended destinations using IP addresses?

Accepted Answer

Network Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Transport Layer

Question 62

Which network topology offers the greatest level of redundancy and resilience, ensuring network stability and reliability?

Accepted Answer

Mesh Topology

Answer

Bus Topology

Answer

Star Topology

Answer

Ring Topology

Question 63

In a star network topology, how are devices connected?

Accepted Answer

To a central hub

Answer

In a mesh configuration

Answer

In a linear chain

Answer

In a ring formation

Question 64

Which network protocol is responsible for establishing reliable, end-to-end communication?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

IP (Internet Protocol)

Answer

UDP (User Datagram Protocol)

Answer

HTTP (Hypertext Transfer Protocol)