Master Computer Networks: Introduction to Computer Networks for MSc

Question 1

In which network topology is each device directly connected to all other devices?

Accepted Answer

Full mesh topology

Answer

Bus topology

Answer

Ring topology

Answer

Star topology

Question 2

In wireless networks, which network topology is designed to enhance coverage and redundancy?

Accepted Answer

Mesh

Answer

Bus

Answer

Ring

Answer

Star

Question 3

What is the main purpose of the Domain Name System (DNS) in computer networks?

Accepted Answer

Converting user-friendly website addresses into numerical IP addresses

Answer

Encrypting data for secure online transactions

Answer

Managing email addresses and routing messages

Answer

Establishing network connections between different devices

Question 4

Which layer within the TCP/IP model is responsible for the routing of data packets?

Accepted Answer

Network layer

Answer

Application layer

Answer

Transport layer

Answer

Data Link layer

Question 5

Identify the network security attack that involves intercepting and altering data during transmission.

Accepted Answer

Man-in-the-middle

Answer

Spoofing

Answer

Phishing

Answer

Malware

Question 6

Which network topology offers the greatest redundancy and fault tolerance, ensuring the network's continued operation despite component failures?

Accepted Answer

Mesh topology

Answer

Bus topology

Answer

Star topology

Answer

Ring topology

Question 7

Which of the following is NOT a component of a Network Interface Card (NIC)?

Accepted Answer

Central Processing Unit (CPU)

Answer

Transceiver

Answer

PHY Layer

Answer

MAC Address

Question 8

In a star topology, how are nodes connected?

Accepted Answer

To a central hub

Answer

To each other in a linear fashion

Answer

In a circular fashion

Answer

Directly to the internet

Question 9

Which layer of the TCP/IP model is responsible for establishing and maintaining connections between hosts?

Accepted Answer

Transport layer

Answer

Network layer

Answer

Application layer

Answer

Data link layer

Question 10

Which of the following is NOT a measure used to protect against unauthorized access to a computer network?

Accepted Answer

Unrestricted access

Answer

Encryption

Answer

Firewalls

Answer

Antivirus software

Question 11

Which protocol is responsible for transmitting routing information between routers?

Accepted Answer

BGP

Answer

HTTP

Answer

SMTP

Answer

ARP

Question 12

What is the primary purpose of a MAC address?

Accepted Answer

To uniquely identify a network device

Answer

To store the IP address of the device

Answer

To control access to the internet

Answer

To determine the bandwidth of the network

Question 13

Which type of network attack involves sending excessive requests to a server to disrupt its services?

Accepted Answer

Denial-of-Service (DoS) attack

Answer

Phishing attack

Answer

Malware attack

Answer

Man-in-the-middle attack

Question 14

What is the main function of a firewall?

Accepted Answer

To prevent unauthorized access to a network

Answer

To detect and remove viruses and malware

Answer

To encrypt data transmissions

Answer

To provide remote access to a network

Question 15

What is a key difference between IPv4 and IPv6 addresses?

Accepted Answer

IPv4 addresses are 32-bit, while IPv6 addresses are 128-bit.

Answer

IPv4 addresses are for private networks, while IPv6 addresses are for public networks.

Answer

IPv4 addresses are more secure than IPv6 addresses.

Answer

IPv4 addresses are faster than IPv6 addresses.

Question 16

Which layer in the OSI model is responsible for error checking and retransmission?

Accepted Answer

Data Link

Answer

Application

Answer

Transport

Answer

Network

Question 17

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

Accepted Answer

To block unauthorized network traffic

Answer

To route network traffic

Answer

To translate network addresses

Answer

To encrypt network data

Question 18

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

Accepted Answer

To connect different network segments

Answer

To translate between different network protocols

Answer

To provide network security

Answer

To store network data

Question 19

What is the key difference between a MAC address and an IP address?

Accepted Answer

MAC address is unique to each device while IP address is assigned to each network interface

Answer

IP address is unique to each device while MAC address is assigned to each network interface

Answer

MAC address is used for local network communication while IP address is used for global network communication

Answer

IP address is used for local network communication while MAC address is used for global network communication

Question 20

What is the purpose of a subnet mask in a network?

Accepted Answer

To divide a network into smaller subnetworks

Answer

To translate between different network protocols

Answer

To connect different network segments

Answer

To provide network security

Question 21

In a star topology network, is each device directly connected to a central switch?

Accepted Answer

Yes

Answer

No

Answer

Only if the switch is a router

Answer

Only if the devices are wireless

Question 22

State the network topology that is NOT valid.

Accepted Answer

Sphere

Answer

Bus

Answer

Star

Answer

Ring

Question 23

Identify the protocol responsible for translating domain names into IP addresses.

Accepted Answer

DNS

Answer

HTTP

Answer

TCP

Answer

UDP

Question 24

Which layer in the TCP/IP model is responsible for data transmission?

Accepted Answer

Transport

Answer

Application

Answer

Data Link

Answer

Session

Question 25

Identify the security measure that involves encrypting data before network transmission.

Accepted Answer

Encryption

Answer

Firewall

Answer

Antivirus

Answer

Access control

Question 26

Indicate the type of network attack that involves overwhelming a network with packets, disrupting its operation.

Accepted Answer

DoS (Denial of Service)

Answer

Phishing

Answer

Man-in-the-Middle

Answer

SQL injection

Question 27

In a star network topology, which node connects all other nodes?

Accepted Answer

Central

Answer

Bus

Answer

Ring

Answer

Mesh

Question 28

At which layer of the OSI model does the Transmission Control Protocol (TCP) operate?

Accepted Answer

Transport

Answer

Physical

Answer

Data Link

Answer

Application

Question 29

What is the primary function of a network interface card (NIC)?

Accepted Answer

Connecting a computer to a network

Answer

Routing network traffic

Answer

Storing network settings

Answer

Encrypting data transmissions

Question 30

What is the key role of the Domain Name System (DNS)?

Accepted Answer

Translating domain names into IP addresses

Answer

Providing email services

Answer

Routing network traffic

Answer

Protecting against cyber threats

Question 31

In a hierarchical network, which OSI layer handles error detection and flow control?

Accepted Answer

Data Link layer

Answer

Physical layer

Answer

Network layer

Answer

Transport layer

Question 32

Which protocol is primarily responsible for routing data packets across a network?

Accepted Answer

IP (Internet Protocol)

Answer

TCP (Transmission Control Protocol)

Answer

UDP (User Datagram Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Question 33

What is the primary role of a subnet mask in an IP address?

Accepted Answer

To differentiate between the network and host portions of the address

Answer

To route data packets across different networks

Answer

To encrypt data for secure transmission

Question 34

What is the primary functionality of a firewall in a network security system?

Accepted Answer

To monitor and control incoming and outgoing network traffic based on predefined security rules.

Answer

To route data packets across different networks

Answer

To encrypt data during transmission

Question 35

Which of the following protocols operates at the application layer?

Accepted Answer

HTTP (Hypertext Transfer Protocol)

Answer

IP (Internet Protocol)

Answer

TCP (Transmission Control Protocol)

Question 36

What is the fundamental difference between TCP and UDP?

Accepted Answer

TCP provides reliable, connection-oriented data transmission, while UDP provides unreliable, connectionless data transmission.

Answer

TCP is significantly faster than UDP

Question 37

Which of the following is an example of a network management tool?

Accepted Answer

Network monitoring software

Answer

Spreadsheet

Answer

Email client

Answer

Word processor

Question 38

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

Accepted Answer

To manage and control the resources and services of a computer network

Answer

To safeguard the network from unauthorized access

Answer

To provide a graphical user interface for accessing network resources