Computer Networks: Master the Fundamentals of Network Connectivity

Question 1

Within the TCP/IP protocol suite, which protocol is responsible for ensuring reliable data delivery across a network?

Accepted Answer

TCP

Answer

IP

Answer

UDP

Answer

ICMP

Question 2

In the OSI model, which layer is responsible for transmitting data over a physical medium, such as a cable or fiber optic?

Accepted Answer

Physical

Answer

Data Link

Answer

Network

Answer

Transport

Question 3

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

Accepted Answer

To a central hub or switch

Answer

In a linear fashion

Answer

In a circular fashion

Answer

Wirelessly to a central access point

Question 4

Which layer is absent from the TCP/IP model?

Accepted Answer

Data Link

Answer

Application

Answer

Transport

Answer

Network

Question 5

Which network topology provides the greatest redundancy and resilience to network failures in a business setting?

Accepted Answer

Mesh Topology

Answer

Bus Topology

Answer

Ring Topology

Answer

Star Topology

Question 6

In the OSI model, which layer is tasked with detecting and correcting errors?

Accepted Answer

Data Link layer

Answer

Physical layer

Answer

Transport layer

Answer

Application layer

Question 7

What is a key advantage of using the TCP/IP protocol suite in computer networks?

Accepted Answer

Ensures reliable data delivery and maintains sequence

Answer

Simple to set up and configure

Answer

Primarily used in small networks (LANs)

Answer

Not supported by modern network devices

Question 8

Which protocol is primarily responsible for establishing and maintaining a reliable connection between two hosts on a computer network?

Accepted Answer

TCP

Answer

HTTP

Answer

DNS

Answer

UDP

Question 9

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

Accepted Answer

Subnet mask

Answer

Physical

Answer

Data Link

Answer

Session

Question 10

Which layer in the TCP/IP model ensures data is delivered reliably?

Accepted Answer

Transport layer

Answer

Application layer

Answer

Network layer

Answer

Data Link layer

Question 11

In the OSI model, which layer is responsible for directing packets across different networks?

Accepted Answer

Network Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Transport Layer

Question 12

Which layer is NOT part of the OSI network communication model?

Accepted Answer

Web

Answer

Physical

Answer

Presentation

Answer

Transport

Question 13

Which protocol is designed to find the optimal path for data packets in a computer network?

Accepted Answer

Routing Information Protocol (RIP)

Answer

File Transfer Protocol (FTP)

Answer

Hypertext Transfer Protocol (HTTP)

Answer

Simple Mail Transfer Protocol (SMTP)

Question 14

In a bus topology, how are network devices physically connected?

Accepted Answer

Devices are connected to a shared transmission medium, such as a coaxial cable.

Answer

All devices are connected to a central device, such as a switch or router.

Answer

Devices are connected in a circular fashion, with each device connected to two other devices.

Question 15

In the OSI model, which layer is responsible for ensuring reliable data transmission by establishing and maintaining a connection-oriented service?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 16

In a Token Ring network, how does data travel?

Accepted Answer

Data is passed around in a token, and only the device with the token can send data.

Answer

Data is sent to all devices at once.

Answer

Data is sent directly from one device to another without any intermediary.

Question 17

In the Open Systems Interconnection (OSI) model, which layer is responsible for ensuring reliable and error-free data transfer across a network?

Accepted Answer

Transport Layer

Answer

Physical Layer

Answer

Session Layer

Answer

Application Layer

Question 18

Within the OSI model, which layer is responsible for ensuring reliable end-to-end data transmission?

Accepted Answer

Transport layer

Answer

Application layer

Answer

Network layer

Answer

Data link layer

Question 19

Within the OSI model, which layer is primarily tasked with ensuring the reliable transmission of data between two network devices?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 20

Within the OSI model, what is the main purpose of the Session layer?

Accepted Answer

Managing communication sessions between devices on a network

Answer

Ensuring reliable data transmission

Answer

Providing data encryption and security

Answer

Routing data packets across networks

Question 21

Within the IP addressing scheme, which IP address range is designated for Class B networks?

Accepted Answer

172.16.0.0 - 172.31.255.255

Answer

192.168.0.0 - 192.168.255.255

Answer

10.0.0.0 - 10.255.255.255

Question 22

Which OSI layer handles the creation and termination of network connections?

Accepted Answer

Transport

Answer

Application

Answer

Physical

Answer

Network

Question 23

Within the OSI model, which layer is responsible for managing communication sessions between network devices?

Accepted Answer

Session

Answer

Network

Answer

Transport

Question 24

Which of the following is NOT a physical network topology?

Accepted Answer

Logical

Answer

Bus

Answer

Star

Answer

Ring

Question 25

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

Accepted Answer

Star

Answer

Bus

Answer

Ring

Answer

Mesh

Question 26

Which of the following is a disadvantage of using a multi-layer network model?

Accepted Answer

Increased complexity

Answer

Modularity

Answer

Error containment

Answer

Flexibility

Question 27

In the OSI model, which layer is responsible for directly supporting user applications?

Accepted Answer

Application layer

Answer

Transport layer

Answer

Network layer

Answer

Data Link layer

Question 28

In the OSI model, which layer is responsible for ensuring reliable data transmission?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 29

In the OSI model, which layer is responsible for determining the route that data packets take to reach their intended destination?

Accepted Answer

Network Layer

Answer

Physical Layer

Answer

Data Link Layer

Answer

Transport Layer

Question 30

Which protocol is not part of the TCP/IP protocol suite?

Accepted Answer

FTP

Answer

IP

Answer

TCP

Answer

UDP

Question 31

In a Class C IP network, what is the maximum number of hosts that can be accommodated?

Accepted Answer

254

Answer

126

Answer

510

Question 32

Within the OSI model, which layer is responsible for ensuring reliable and error-free data transfer across network devices?

Accepted Answer

Transport

Answer

Application

Answer

Network

Question 33

Which security measure is used to protect the privacy and accuracy of data during transmission in computer networks?

Accepted Answer

Encryption

Answer

Authentication

Answer

Firewall

Answer

Virtual Private Network (VPN)

Question 34

Within the TCP/IP protocol suite, which protocol ensures reliable, connection-based network communication?

Accepted Answer

TCP

Answer

IP

Question 35

In the TCP/IP protocol suite, which protocol is used to establish and maintain a connection between two devices on a network?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

UDP (User Datagram Protocol)

Answer

IP (Internet Protocol)

Question 36

Within the TCP/IP protocol suite, which protocol is responsible for determining the path that data packets take through the network?

Accepted Answer

Internet Protocol (IP)

Answer

Transmission Control Protocol (TCP)

Answer

User Datagram Protocol (UDP)

Question 37

In the TCP/IP protocol stack, which protocol is responsible for establishing and maintaining connections between devices on a network?

Accepted Answer

TCP (Transmission Control Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Answer

UDP (User Datagram Protocol)

Answer

DNS (Domain Name System)

Question 38

The OSI Model organizes network functions into layers. What is a primary advantage of this layered approach?

Accepted Answer

Increased flexibility and easier troubleshooting due to independent protocol operation.

Answer

Lower network implementation and maintenance costs due to standardized protocols.

Answer

Enhanced network security by encrypting data before transmission.

Answer

Improved communication between network devices regardless of underlying technologies.

Question 39

Which protocol is specifically designed for managing and monitoring computer networks?

Accepted Answer

SNMP

Answer

HTTP

Answer

ICMP

Question 40

Within the TCP/IP protocol suite, which protocol is responsible for providing reliable, connection-oriented, and stream-based data transmission?

Accepted Answer

TCP

Answer

IP

Answer

UDP

Answer

ICMP

Question 41

What is network virtualization? Discuss its benefits and drawbacks in the context of network infrastructures.

Accepted Answer

Network virtualization divides a physical network into multiple virtual ones, each with its own dedicated resources and configurations.

Answer

Network virtualization is only used in cloud computing environments.

Answer

Network virtualization provides no advantages over traditional network infrastructures.

Answer

Implementing network virtualization is highly complex due to its intricate nature.

Question 42

Within the Open Systems Interconnection (OSI) model, which layer is responsible for managing applications such as file transfer, email, and web browsing?

Accepted Answer

Application Layer

Answer

Transport Layer

Answer

Network Layer

Question 43

How does the Internet Control Message Protocol (ICMP) aid in network troubleshooting? Explain its role in identifying and resolving common network problems.

Accepted Answer

ICMP assists in identifying and resolving issues like network congestion and dropped packets.

Answer

ICMP facilitates the exchange of routing information between network devices.

Answer

ICMP is exclusively applicable to troubleshooting IPv4 networks.

Question 44

What is software-defined networking (SDN)? How does SDN enhance network programmability and flexibility, and what are its potential benefits and challenges in network management?

Accepted Answer

SDN separates control plane functions (routing, switching) from the data plane (traffic forwarding), allowing for centralized control and programmability, increasing network flexibility.

Answer

SDN is a protocol that optimizes data transmission speed.

Answer

SDN is a cybersecurity measure that protects networks from unauthorized access.

Question 45

How has cloud computing impacted network architectures and services, particularly in terms of bandwidth and latency?

Accepted Answer

Cloud computing has shifted the focus from network bandwidth to latency.

Answer

Cloud computing has led to more centralized networks with fewer distributed components.

Answer

Cloud computing has made network security less important as data is stored off-site.

Question 46

How do mobility and wireless technologies influence the design and implementation of modern computer networks?

Accepted Answer

They necessitate a complete rethinking of network design principles.

Answer

They have no significant impact.

Answer

They require minor modifications to existing designs.

Answer

They simplify network design by eliminating the need for cabling.

Question 47

In routing algorithms like Dijkstra's or Bellman-Ford, what's the first step in finding the shortest path between devices?

Accepted Answer

Giving each network link a weight or cost

Answer

Finding all possible paths between the start and end points

Answer

Choosing the path with the lowest total weight or cost

Answer

Making a table of distances between all pairs of devices

Question 48

Which protocol is utilized for routing data packets on networks?

Accepted Answer

IP

Answer

TCP

Answer

HTTP

Answer

FTP

Question 49

What is the purpose of a MAC address?

Accepted Answer

To identify a network adapter

Answer

To route data packets

Answer

To encrypt data transmissions

Answer

To provide a unique hostname

Question 50

Which type of network cable is commonly employed for high-speed data transfer?

Accepted Answer

Fibre optic

Answer

Coaxial

Answer

Twisted pair

Answer

USB

Question 51

What is the primary purpose of a network switch?

Accepted Answer

To connect multiple devices to a network

Answer

To route data packets

Answer

To provide network security

Answer

To store network configuration settings

Question 52

Which of the following is a type of network topology used to connect devices in a linear fashion?

Accepted Answer

Bus

Answer

Star

Answer

Ring

Answer

Mesh

Question 53

What is the primary purpose of the Transmission Control Protocol (TCP) in the TCP/IP protocol suite?

Accepted Answer

To ensure reliable data transmission between devices

Answer

To establish a fast and efficient connection between devices

Answer

To provide secure data transmission between devices

Answer

To prioritize network traffic based on its importance

Question 54

Which of the following is a potential network security threat that aims to trick users into revealing sensitive information?

Accepted Answer

Phishing

Answer

Malware

Answer

Spam

Answer

Denial-of-service (DoS) attack

Question 55

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

Accepted Answer

To prevent unauthorized access to the network and its resources

Answer

To monitor network traffic for suspicious activity and potential threats

Answer

To translate network addresses for efficient communication between devices

Answer

To provide encryption for network traffic to protect sensitive data

Question 56

What is the primary purpose of a network interface card (NIC) in a computer system?

Accepted Answer

To facilitate the physical connection between a computer and a network

Answer

To provide security features for network traffic

Answer

To translate network addresses for efficient communication

Answer

To monitor network traffic for suspicious activity

Question 57

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

Accepted Answer

To translate human-readable domain names into numerical IP addresses

Answer

To provide security measures to protect network traffic

Answer

To monitor network traffic for potential threats and anomalies

Answer

To encrypt network traffic for secure data transmission

Question 58

What is the primary purpose of a Network Management System (NMS) in network administration?

Accepted Answer

To provide centralized monitoring and management of network devices and resources

Answer

To ensure network security by detecting and preventing threats

Answer

To translate domain names into numerical IP addresses for efficient communication

Answer

To encrypt network traffic to protect sensitive data

Question 59

For a small office with around 10 computers, which network topology is most appropriate and why?

Accepted Answer

Star topology

Answer

Bus topology

Answer

Ring topology

Answer

Mesh topology

Question 60

What is the main purpose of network security protocols like SSL/TLS and IPsec?

Accepted Answer

To encrypt data during transmission, protecting it from unauthorized access

Answer

To ensure only authorized users can access network resources

Answer

To detect and respond to network attacks

Answer

To authenticate users and devices on the network

Question 61

What does a subnet mask do in IP addressing?

Accepted Answer

It divides an IP address into network and host parts, determining the network size.

Answer

It's a physical device that separates network segments.

Answer

It's a security feature that blocks unauthorized access.

Question 62

Within the TCP/IP protocol suite, which protocol is designed to establish and maintain reliable, connection-oriented data transmission?

Accepted Answer

TCP

Answer

HTTP

Answer

UDP

Question 63

To monitor network performance in real-time and spot potential issues, which tool is best?

Accepted Answer

Network Performance Monitor

Answer

Network Protocol Analyzer

Answer

Network Configuration Manager

Answer

Network Security Scanner

Question 64

Which of the following is NOT an advantage of proactive network monitoring?

Accepted Answer

Implementation of strong network security measures

Answer

Early detection of potential network problems

Answer

Improved network performance

Answer

Reduced network downtime