Networking MCQs Flashcards

Question 1

Which of the following topologies is most suited for fault-tolerant networks but may require the most cabling?

• a) Bus topology

• b) Ring topology

• c) Star topology

• d) Mesh topology

Question 2

In which type of network topology does each node connect to a central hub?

• a) Ring topology

• b) Star topology

• c) Bus topology

• d) Mesh topology

Question 3

Which transmission medium is least affected by electromagnetic interference?

• a) Twisted-pair cable

• b) Coaxial cable

• c) Optical fiber

• d) Satellite signals

Question 4

Which device operates at the network layer of the OSI model and helps to determine the best path for data to travel?

• a) Switch

• b) Hub

• c) Router

• d) Repeater

Question 5

What is the primary difference between a hub and a switch in networking?

• a) A hub uses MAC addresses, while a switch uses IP addresses.

• b) A switch transmits data in broadcast mode, while a hub transmits in unicast mode.

• c) A hub forwards data to all connected devices, while a switch forwards data to specific devices.

• d) A hub operates at Layer 3 of the OSI model, while a switch operates at Layer 2.

Question 6

Which of the following is not a characteristic of TCP (Transmission Control Protocol)?

• a) Reliable data transmission

• b) Flow control

• c) Connection-oriented

• d) Unreliable delivery

Question 7

Which protocol is primarily responsible for assigning IP addresses in a network?

• a) DNS

• b) DHCP

• c) HTTP

• d) FTP

Question 8

Which of the following is a type of malware that locks your files and demands a ransom to restore access?

• a) Virus

• b) Worm

• c) Trojan horse

• d) Ransomware

Question 9

What does a firewall primarily do in the context of network security?

• a) Encrypt data for secure transmission

• b) Detect and remove malware

• c) Control incoming and outgoing network traffic based on predetermined rules

• d) Monitor real-time data traffic to identify potential threats

Question 10

Which type of cyberattack involves overwhelming a network with a flood of traffic, making services unavailable?

• a) Phishing

• b) Man-in-the-middle attack

• c) Distributed Denial of Service (DDoS)

• d) SQL Injection

Question 11

Which of the following is true for a bus topology?

• a) It provides the most fault tolerance.

• b) It has a single point of failure at the central hub.

• c) It uses a single backbone cable to connect all devices.

• d) It is the most secure topology.

Question 12

Which transmission medium provides the highest bandwidth for long-distance communication?

• a) Twisted-pair cable

• b) Coaxial cable

• c) Optical fiber

• d) Wireless radio waves

Question 13

What layer of the OSI model is responsible for encryption and decryption of data?

• a) Data Link Layer

• b) Transport Layer

• c) Session Layer

• d) Presentation Layer

Question 14

Which of the following is NOT a type of network topology?

• a) Mesh

• b) Hybrid

• c) Bus

• d) Repeater

Question 15

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

• a) To translate domain names to IP addresses

• b) To assign MAC addresses to devices

• c) To encrypt internet traffic

• d) To provide fault tolerance in a network

Question 16

Which device is used to connect different networks together?

• a) Hub

• b) Repeater

• c) Switch

• d) Router

Question 17

Which of the following uses time division multiplexing (TDM) for transmission?

• a) Fiber-optic cables

• b) Ethernet cables

• c) Satellite communication

• d) Token Ring network

Question 18

Which OSI layer ensures error-free data transmission between adjacent nodes?

• a) Physical Layer

• b) Network Layer

• c) Data Link Layer

• d) Transport Layer

Question 19

Which device breaks up collision domains but not broadcast domains?

• a) Hub

• b) Switch

• c) Router

• d) Repeater

Question 20

Which type of IP address is non-routable and used within private networks?

• a) Public IP address

• b) Private IP address

• c) Dynamic IP address

• d) Static IP address

Question 21

Which of the following is NOT a secure wireless protocol?

• a) WPA2

• b) WEP

• c) WPA

• d) WPA3

Question 22

What is the primary advantage of using fiber-optic cables over copper cables?

• a) Higher flexibility

• b) Resistance to electromagnetic interference

• c) Easier to install

• d) Lower cost

Question 23

Which of the following protocols is used for secure file transfer over the internet?

• a) HTTP

• b) FTP

• c) SFTP

• d) DHCP

Question 24

What is the function of ARP (Address Resolution Protocol)?

• a) To assign IP addresses to devices

• b) To resolve MAC addresses from IP addresses

• c) To route data between different networks

• d) To encrypt network traffic

Question 25

Which network device operates at both Layer 2 and Layer 3 of the OSI model?

• a) Hub

• b) Switch

• c) Repeater

• d) Router

Question 26

In which type of cyberattack does an attacker intercept communications between two parties?

• a) Phishing

• b) Man-in-the-middle attack

• c) Denial of Service

• d) Ransomware

Question 27

Which of the following is a technique to break down a large network into smaller, more manageable subnetworks?

• a) Fragmentation

• b) Subnetting

• c) Virtualization

• d) Encryption

Question 28

Which port number is used by HTTPS?

• a) 21

• b) 22

• c) 443

• d) 80

Question 29

Which of the following protocols allows remote access to a computer using a secure connection?

• a) Telnet

• b) SSH

• c) HTTP

• d) POP3

Question 30

Which of the following is a key feature of a VPN (Virtual Private Network)?

• a) It improves internet speed.

• b) It provides encryption and anonymity for users.

• c) It blocks all types of malware.

• d) It acts as a firewall.

Question 31

Which of the following is NOT a function of a router?

• a) Traffic forwarding

• b) Packet switching

• c) Network segmentation

• d) Data encryption

Question 32

What does IPsec (Internet Protocol Security) provide in a network?

• a) Data integrity and confidentiality

• b) Faster data transmission

• c) Dynamic IP addressing

• d) Network address translation

Question 33

Which of the following protocols is responsible for ensuring data is delivered without errors and in the correct sequence?

• a) UDP

• b) FTP

• c) TCP

• d) IP

Question 34

Which cybersecurity attack involves a fraudulent attempt to obtain sensitive information by pretending to be a trustworthy entity?

• a) Phishing

• b) DDoS

• c) Brute force attack

• d) Keylogging

Question 35

Which device amplifies and regenerates signals to extend the distance of a network?

• a) Switch

• b) Hub

• c) Repeater

• d) Router

Question 36

Which of the following is true about a peer-to-peer network?

• a) It requires a central server for communication.

• b) It is highly scalable for large networks.

• c) All devices have equal privileges.

• d) It provides better security than a client-server network.

Question 37

Which malware type disguises itself as legitimate software but performs harmful actions in the background?

• a) Virus

• b) Worm

• c) Trojan horse

• d) Ransomware

Question 38

Which of the following can provide an added layer of security by allowing or denying traffic based on policies?

• a) Router

• b) Firewall

• c) Hub

• d) Switch

Question 39

What is the purpose of NAT (Network Address Translation)?

• a) To assign private IP addresses to devices

• b) To allow multiple devices to share a single public IP address

• c) To encrypt traffic on public networks

• d) To establish VPN connections

Question 40

Which of the following attacks exploits a vulnerability in databases by inserting malicious code?

• a) SQL injection

• b) Phishing

• c) DDoS attack

• d) Keylogging

Question 41

What role does the Transport Layer of the OSI model play in networking?

• a) Provides error checking and flow control

• b) Defines hardware specifications for network communication

• c) Routes packets across different networks

• d) Encrypts data during transmission

Question 42

Which of the following protocols is commonly used for sending email?

• a) FTP

• b) SMTP

• c) IMAP

• d) HTTP

Question 43

What does a honeypot in cybersecurity refer to?

• a) A malicious server used to attack hackers

• b) A system set up to attract attackers and study their methods

• c) A secure network node to redirect traffic

• d) An encrypted database storing sensitive data

Question 44

Which term refers to the unauthorized access of network resources?

• a) Hacking

• b) Phishing

• c) Encryption

• d) VPN

Question 45

What is the primary function of a VLAN (Virtual Local Area Network)?

• a) Provides secure remote access

• b) Segments a network into smaller, isolated sections

• c) Encrypts all network traffic

• d) Reduces bandwidth usage

Question 46

Which of the following is a principle of the CIA triad in cybersecurity?

• a) Access control

• b) Integrity

• c) Non-repudiation

• d) Redundancy

Question 47

Which of the following is a distributed computing framework for processing large datasets?

• a) OSI model

• b) Hadoop

• c) SMTP

• d) DHCP

Question 48

What is the main purpose of a proxy server?

• a) To encrypt communications

• b) To forward requests and responses between clients and servers

• c) To act as a firewall

• d) To directly transfer files between computers

Question 49

Which cybersecurity practice involves identifying weaknesses in a network before attackers can exploit them?

• a) Phishing

• b) Penetration testing

• c) Ransomware

• d) Social engineering

Question 50

Which of the following protocols is used for securing communication over a computer network?

• a) HTTP

• b) FTP

• c) IPsec

• d) DHCP

Question 51

Which network security tool monitors traffic in real time to detect suspicious activity?

• a) Firewall

• b) IDS (Intrusion Detection System)

• c) Router

• d) NAT

Question 52

Which of the following is an attack that attempts to crack encrypted data by trying every possible combination?

• a) Brute force attack

• b) Phishing

• c) DDoS attack

• d) Malware injection

Question 53

Which of the following cybersecurity principles ensures that data has not been altered or tampered with?

• a) Confidentiality

• b) Integrity

• c) Availability

• d) Redundancy

Question 54

Which of the following protocols is used for downloading emails from a server to a local client?

• a) SMTP

• b) IMAP

• c) FTP

• d) DNS

Question 55

Which type of malware replicates itself without any human intervention?

• a) Virus

• b) Worm

• c) Trojan horse

• d) Spyware

Question 56

What is the primary difference between UDP and TCP?

• a) TCP is connection-oriented, while UDP is connectionless.

• b) UDP ensures reliable data transfer, while TCP does not.

• c) UDP operates at the Data Link Layer, while TCP operates at the Network Layer.

• d) TCP is faster than UDP.

Question 57

Which of the following is an advantage of IPv6 over IPv4?

• a) Shorter addresses

• b) Larger address space

• c) Less secure protocol

• d) Faster data transmission

Question 58

Which of the following security measures prevents unauthorized access to a network?

• a) MAC filtering

• b) ARP spoofing

• c) DHCP snooping

• d) Subnetting

Question 59

What is a key characteristic of a cloud-based network?

• a) All data is stored locally.

• b) Services are available over the internet.

• c) It requires specialized hardware.

• d) It is slower than traditional networks.

Question 60

Which of the following refers to a system that automatically detects and responds to security incidents in real-time?

• a) IDS

• b) IPS (Intrusion Prevention System)

• c) Proxy server

• d) NAT

Question 61

What is the primary function of a Network Interface Card (NIC)?

• a) Connect multiple computers in a LAN

• b) Convert analog signals to digital

• c) Connect a computer to a network

• d) Amplify weak signals in a network

Question 62

Which device converts digital data to analog signals for transmission over telephone lines?

• a) Hub

• b) Repeater

• c) Modem

• d) Router

Question 63

What type of connector is typically used for connecting computers in a LAN using twisted-pair cables?

• a) RJ-11

• b) RJ-45

• c) HDMI

• d) USB

Question 64

Which device is commonly used to regenerate weak signals in a network?

• a) Switch

• b) Hub

• c) Repeater

• d) Gateway

Question 65

What is a significant disadvantage of using a hub in a network?

• a) It broadcasts data to all connected devices.

• b) It only supports wireless networks.

• c) It only connects two devices.

• d) It is too expensive to deploy.

Question 66

Which device intelligently forwards data only to the intended recipient in a network?

• a) Hub

• b) Switch

• c) Repeater

• d) Router

Question 67

A wireless access point (WAP) allows devices to connect to a network using which technology?

• a) Bluetooth

• b) Wi-Fi

• c) Ethernet

• d) Coaxial cables

Question 68

Which device is used to connect two different types of networks?

• a) Hub

• b) Switch

• c) Router

• d) Gateway

Question 69

Which of the following is an example of wired transmission media?

• a) Radio waves

• b) Optical fiber

• c) Infrared waves

• d) Microwaves

Question 70

What type of transmission media is best suited for long-distance, high-bandwidth communication?

• a) Coaxial cable

• b) Twisted-pair cable

• c) Optical fiber

• d) Radio waves

Question 71

Which cable is made of copper and is twisted to reduce interference?

• a) Coaxial cable

• b) Optical fiber cable

• c) Twisted-pair cable

• d) Ethernet cable

Question 72

Which of the following is NOT an example of wireless transmission media?

• a) Microwave

• b) Optical fiber

• c) Infrared waves

• d) Satellite link

Question 73

Which transmission media has the highest resistance to electromagnetic interference (EMI)?

• a) Twisted-pair cable

• b) Coaxial cable

• c) Optical fiber cable

• d) Microwave signals

Question 74

What is the main disadvantage of using optical fiber cables?

• a) Low bandwidth

• b) High cost and complexity

• c) Susceptibility to electromagnetic interference

• d) Limited range

Question 75

Which wireless technology is used in short-range communication, like remote controls and wireless mice?

• a) Microwave

• b) Infrared

• c) Radio waves

• d) Satellite

Question 76

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

• a) Convert digital data to analog

• b) Amplify and regenerate weak signals

• c) Distribute IP addresses

• d) Route data between different networks

Question 77

Which type of cable is commonly used in television signal transmission?

• a) Coaxial cable

• b) Twisted-pair cable

• c) Optical fiber cable

• d) HDMI cable

Question 78

What does WWW stand for in the context of web services?

• a) World Web Window

• b) World Wide Web

• c) Wide World Web

• d) Web Wide World

Question 79

Which protocol governs the exchange of documents over the web?

• a) FTP

• b) SMTP

• c) HTTP/HTTPS

• d) IMAP

Question 80

Which of the following is an example of a web browser?

• a) Apache

• b) Google Chrome

• c) FTP Server

• d) VPN

Question 81

What does an IP address represent in networking?

• a) The unique address of a document on the web

• b) The location of a computer or device on the internet

• c) The physical address of a server

• d) A protocol for sending emails

Question 82

Which of the following is an example of a URL (Uniform Resource Locator)?

• a) 192.168.1.1

• b) www.example.com

• c) MAC address

• d) HTML tag

Question 83

What is the difference between an IP address and a URL?

• a) IP addresses identify servers, URLs identify documents

• b) IP addresses identify documents, URLs identify servers

• c) URLs are numerical, IP addresses are text-based

• d) Both are the same

Question 84

What is the first page of a website typically called?

• a) Homepage

• b) Index page

• c) Web server page

• d) FTP page

Question 85

Which protocol is used to transfer files from one server to another on the web?

• a) HTTP

• b) FTP

• c) TCP

• d) SMTP

Question 86

What does the term "web hosting" refer to?

• a) Designing web pages

• b) Storing web pages on a server

• c) Browsing the internet

• d) Accessing email services

Question 87

Which of the following is a client-side scripting language used to make web pages interactive?

• a) PHP

• b) JavaScript

• c) SQL

• d) Python

Question 88

Which of the following is NOT an example of a server-side scripting language?

• a) PHP

• b) JSP

• c) JavaScript

• d) ASP

Question 89

What is the main feature of Web 2.0 technologies?

• a) Static websites

• b) User interaction and content sharing

• c) High-speed file transfers

• d) Cloud computing

Question 90

What does HTML stand for?

• a) Hyperlink Text Markup Language

• b) Hyper Text Markup Language

• c) Hyper Transfer Markup Language

• d) Hybrid Text Markup Language

Question 91

Which markup language is primarily used to carry and exchange data rather than display it?

• a) HTML

• b) XML

• c) SQL

• d) CSS

Question 92

Which of the following best describes a "domain name"?

• a) A unique identifier for each website

• b) A program used to browse the web

• c) A collection of interlinked web pages

• d) The physical address of a server

Question 93

Which protocol is used by a web browser to communicate with a web server?

• a) HTTP

• b) DNS

• c) FTP

• d) SMTP

Question 94

What is the role of a web server in web services?

• a) Host multimedia content

• b) Process client-side scripts

• c) Respond to web browser requests

• d) Manage emails

Question 95

What does the term "URL" stand for?

• a) Uniform Resource Locator

• b) Uniform Resource Link

• c) Unique Resource Locator

• d) Unified Resource Location

Question 96

What is an example of a web 2.0 application?

• a) Google Docs

• b) Microsoft Word

• c) HTML editor

• d) Linux terminal

Question 97

Which of the following is a key difference between HTML and XML?

• a) HTML is used to display data, XML is used to carry data

• b) HTML is case-sensitive, XML is not

• c) XML is only used for websites, while HTML is used for apps

• d) HTML is a programming language, XML is a markup language

Question 98

Which language is used to define the structure of web documents in Web 2.0?

• a) HTML

• b) CSS

• c) XML

• d) SQL

Question 99

Which of the following statements is true for client-side scripts?

• a) They are executed on the server

• b) They are executed by the browser on the client’s computer

• c) They are browser-independent

• d) They are faster than server-side scripts

Question 100

What is the main advantage of server-side scripting over client-side scripting?

• a) It reduces server load

• b) It is more secure

• c) It provides better UI

• d) It is faster