Computer Networks: Types, Topologies, and Protocols

Question 1

In network troubleshooting, what is the correct order of steps?

Accepted Answer

Identify the problem, gather information, analyze the problem, implement a solution

Answer

Gather information, analyze the problem, implement a solution, identify the problem

Answer

Analyze the problem, identify the problem, implement a solution, gather information

Answer

Implement a solution, gather information, identify the problem, analyze the problem

Question 2

Which of the following network protocols is responsible for establishing and maintaining connections between devices?

Accepted Answer

TCP

Answer

FTP

Answer

HTTP

Answer

SMTP

Question 3

Which of the following devices is used to connect multiple computers and network devices within a LAN?

Accepted Answer

Switch

Answer

Access point

Answer

Modem

Answer

Router

Question 4

Which of the following is a primary advantage of using a computer network?

Accepted Answer

Resource sharing

Answer

Increased security

Answer

Reduced costs

Answer

Enhanced data storage

Question 5

Which network protocol suite is widely used for transmitting data over the internet?

Accepted Answer

TCP/IP

Answer

FTP

Answer

HTTP

Question 6

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

Accepted Answer

To forward packets between networks

Answer

To convert analog signals to digital signals

Answer

To store data

Answer

To provide direct access to the internet

Question 7

Which of the following is a defining characteristic of a Local Area Network (LAN)?

Accepted Answer

Covers a small geographic area

Answer

Employs public networks

Answer

Uses a wide variety of protocols

Answer

Supports high data transfer rates

Question 8

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

Accepted Answer

To connect a computer to a network

Answer

To convert analog signals to digital signals

Answer

To provide internet access

Answer

To store data

Question 9

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

Accepted Answer

To protect the network from unauthorized access

Answer

To provide internet access

Answer

To convert analog signals to digital signals

Answer

To store data

Question 10

What is a primary function of a network management system (NMS)?

Accepted Answer

To monitor and manage network devices and services

Answer

To store data

Answer

To convert analog signals to digital signals

Answer

To provide internet access

Question 11

Which of the following is NOT a valid network topology?

Accepted Answer

Linear

Answer

Ring

Answer

Bus

Answer

Star

Question 12

Which network protocol is used for sending and receiving email messages?

Accepted Answer

SMTP

Answer

TCP

Answer

HTTP

Answer

UDP

Question 13

What is the primary purpose of a network mask?

Accepted Answer

To differentiate between the network and host portions of an IP address.

Answer

To encrypt network traffic.

Answer

To provide a default gateway for the network.

Question 14

Which type of network cabling offers higher bandwidth and lower latency compared to copper cables?

Accepted Answer

Fiber optic

Answer

Twisted pair

Answer

Coaxial

Answer

USB

Question 15

What is the main function of a firewall?

Accepted Answer

To protect a network from unauthorized access.

Answer

To connect different networks together.

Answer

To provide network address translation.

Answer

To monitor network traffic for performance analysis.

Question 16

Which of the following is a cloud computing service model that provides virtualized infrastructure resources?

Accepted Answer

Infrastructure as a Service (IaaS)

Answer

Network as a Service (NaaS)

Answer

Disaster Recovery as a Service (DRaaS)

Answer

Security as a Service (SaaS)

Question 17

What is the primary function of a router?

Accepted Answer

To forward data packets between networks based on their IP addresses.

Answer

To translate domain names into IP addresses.

Answer

To provide network access to individual devices.

Question 18

Which of the following is a popular wireless network standard?

Accepted Answer

802.11n

Answer

SMTP

Answer

HTTP

Answer

TCP/IP

Question 19

What is the key difference between a LAN (Local Area Network) and a WAN (Wide Area Network)?

Accepted Answer

LANs are typically smaller, private networks within a limited physical space, while WANs are larger, public networks that span broader geographic areas.

Answer

LANs are always faster than WANs.

Answer

LANs use wired connections, while WANs use wireless connections.

Question 20

Which of the following is a recommended best practice for maintaining network security?

Accepted Answer

Use strong, complex passwords and change them regularly.

Answer

Leave your firewall turned off for better performance.

Answer

Connect to public Wi-Fi networks without using a VPN.

Question 21

Which of the following network topologies connects each device directly to a central hub?

Accepted Answer

Star

Answer

Bus

Answer

Ring

Question 22

Which protocol is responsible for assigning IP addresses to devices on a network?

Accepted Answer

DHCP

Answer

HTTP

Answer

TCP

Answer

UDP

Question 23

Which type of network is typically used within a single building or campus and provides high-speed data transmission?

Accepted Answer

LAN

Answer

WAN

Answer

MAN

Question 24

What is the primary function of a subnet mask?

Accepted Answer

To divide a network into smaller subnetworks, allowing for more efficient network management.

Answer

To assign IP addresses to devices

Answer

To protect the network from unauthorized access

Answer

To connect different networks together

Question 25

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

Accepted Answer

To monitor and control incoming and outgoing network traffic, blocking unauthorized access and protecting the network from security threats.

Answer

To protect the network from viruses

Answer

To assign IP addresses to devices

Answer

To connect different networks together

Question 26

Which of the following is a primary advantage of utilizing a cloud-based network?

Accepted Answer

Reduced infrastructure costs

Answer

Increased network security

Answer

Improved network performance

Question 27

What is the fundamental difference between a physical network and a virtual network?

Accepted Answer

Physical networks utilize physical cables and hardware components, while virtual networks use software to create logical connections and operate independently of physical infrastructure.

Answer

Physical networks are inherently faster than virtual networks.

Answer

Only virtual networks can provide wireless connectivity.

Question 28

What is the primary responsibility of a network administrator?

Accepted Answer

To design, implement, manage, and maintain computer networks, ensuring their efficient and secure operation.

Answer

To troubleshoot and repair computer hardware problems

Answer

To develop and write software for computer networks

Answer

To provide technical support and assistance to computer users

Question 29

What is the primary function of a network protocol?

Accepted Answer

To define rules for communication between devices on a network.

Answer

To assign IP addresses to devices.

Answer

To encrypt data transmissions.

Question 30

Which layer of the TCP/IP model is responsible for ensuring that data is transferred reliably between devices?

Accepted Answer

Transport Layer

Answer

Application Layer

Answer

Network Layer

Answer

Data Link Layer

Question 31

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

Accepted Answer

To forward data packets between different networks.

Answer

To assign IP addresses to devices.

Answer

To provide access to the internet.

Answer

To protect networks from unauthorized access.

Question 32

Which of the following is an example of a cloud-based networking service?

Accepted Answer

Amazon Virtual Private Cloud (VPC)

Answer

VPN

Answer

Fiber optic cable

Answer

Wi-Fi

Question 33

What is the primary purpose of a firewall?

Accepted Answer

To prevent unauthorized access to a network.

Answer

To troubleshoot network problems.

Answer

To improve network performance.

Answer

To provide internet access.

Question 34

What is the key difference between a Local Area Network (LAN) and a Wide Area Network (WAN)?

Accepted Answer

A LAN covers a smaller geographic area than a WAN.

Answer

A LAN uses wired connections, while a WAN uses wireless connections.

Question 35

What is the primary purpose of a network management system (NMS)?

Accepted Answer

To monitor and manage network devices and services.

Answer

To connect different networks together.

Answer

To provide network security.

Question 36

Which network topology represents a linear arrangement of devices connected to a common backbone?

Accepted Answer

Bus

Answer

Ring

Answer

Star

Answer

Mesh

Question 37

What is the primary purpose of a MAC address?

Accepted Answer

To uniquely identify a device on a network segment

Answer

To route traffic between different networks

Answer

To store user data

Answer

To provide security for a network

Question 38

What type of network security device inspects and filters incoming and outgoing network traffic based on a set of rules?

Accepted Answer

Firewall

Answer

Router

Answer

VPN

Answer

Switch

Question 39

Which type of network cable offers the highest bandwidth and is commonly used for high-speed data transmission?

Accepted Answer

Fiber optic

Answer

Telephone

Answer

Twisted pair

Answer

Coaxial

Question 40

Which wireless network standard is widely used for connecting devices to the internet and local networks?

Accepted Answer

Wi-Fi

Answer

Bluetooth

Answer

Zigbee

Answer

NFC

Question 41

What is the main purpose of a network mask?

Accepted Answer

To determine the subnet and host portion of an IP address

Answer

To encrypt data

Answer

To translate domain names to IP addresses

Answer

To provide network security

Question 42

Which of the following is a protocol used for managing and monitoring network devices?

Accepted Answer

SNMP

Answer

HTTP

Answer

FTP

Answer

Telnet

Question 43

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

Accepted Answer

To forward data packets between different networks based on their destination IP addresses

Answer

To store network data

Answer

To provide network security

Answer

To connect devices within a network

Question 44

Which network topology is highly reliable because a failure in one connection only affects a single device?

Accepted Answer

Star

Answer

Ring

Answer

Mesh

Answer

Bus

Question 45

What protocol is primarily responsible for converting domain names (like google.com) into IP addresses (like 172.217.160.142)?

Accepted Answer

DNS (Domain Name System)

Answer

IP (Internet Protocol)

Answer

TCP (Transmission Control Protocol)

Answer

HTTP (Hypertext Transfer Protocol)

Question 46

A network connecting devices within a single building is called a:

Accepted Answer

Local Area Network (LAN)

Answer

Metropolitan Area Network (MAN)

Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)

Question 47

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

Accepted Answer

Presentation Layer

Answer

Application Layer

Answer

Transport Layer

Answer

Network Layer

Question 48

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

Accepted Answer

To block unauthorized access to the network.

Answer

To increase network speed.

Answer

To encrypt data transmission.

Answer

To manage network traffic.

Question 49

A company wants to connect its offices in different cities. Which type of network is best suited for this scenario?

Accepted Answer

Wide Area Network (WAN)

Answer

Personal Area Network (PAN)

Answer

Metropolitan Area Network (MAN)

Answer

Local Area Network (LAN)

Question 50

Which network cable is known for its high bandwidth and resistance to interference?

Accepted Answer

Fiber Optic

Answer

Coaxial

Answer

Ethernet

Answer

Twisted Pair

Question 51

In a client-server network model, which component provides resources to other components?

Accepted Answer

Server

Answer

Switch

Answer

Router

Answer

Client

Question 52

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

Accepted Answer

To distinguish the network part from the host part of an IP address.

Answer

To encrypt network traffic.

Answer

To manage network security.

Question 53

Which of the following is NOT a typical network security threat?

Accepted Answer

Data Redundancy

Answer

Phishing

Answer

Malware