MCQs

Disclaimer:

Educational Use Only:

The website links provided are to be used strictly for educational and knowledge-gaining purposes only.

No Misuse:

Do not misuse the links or the information contained therein for any commercial, illegal, or unethical activities.

Respect for Websites and Businesses:

Respect the intellectual property and business interests of the websites and their owners. Do not attempt to alter, copy, or redistribute content without proper authorization.

Acknowledge Value of Knowledge:

Recognize and value the knowledge and resources shared by these websites. Use the information responsibly and ethically.

No Endorsement:

The provision of these links does not imply endorsement of the linked sites, their content, or their products and services. Users are responsible for evaluating the suitability and accuracy of the information.

User Responsibility:

By accessing these links, you agree to use the information at your own risk and to comply with all applicable laws and website terms of use.

1. Which field covers the security of both public and private computer networks?
   a. Artificial Intelligence
   b. Machine Learning
   c. Network Security
   d. Information Technology
   Answer: c. Network Securitysanfoundry
2. Network security provides which two essential features for resources?
   a. Reliability and speed
   b. Authentication and access control
   c. Scalability and redundancy
   d. Virtualization and management
   Answer: b. Authentication and access controlsanfoundry
3. Which is NOT considered a primary objective of network security?
   a. Identification
   b. Authentication
   c. Access control
   d. Lock
   Answer: d. Locksanfoundry
4. What is commonly used for network identification?
   a. UserID
   b. Password
   c. OTP
   d. Fingerprint
   Answer: a. UserIDsanfoundry
5. What is the process of confirming a user’s identity in network security?
   a. Authorization
   b. Encryption
   c. Authentication
   d. Routing
   Answer: c. Authenticationsanfoundry
6. Which of the following passwords is most secure?
   a. Boat123
   b. WTh!5Z
   c. into*48
   d. 123456
   Answer: b. WTh!5Ztestbook
7. Why is user awareness important in computer security?
   a. It speeds up computers
   b. It prevents malware attacks
   c. It reduces network costs
   d. It enhances device compatibility
   Answer: b. It prevents malware attackstestbook
8. What does encryption do to data?
   a. Duplicates it
   b. Deletes it
   c. Converts it into a secure format
   d. Compresses it
   Answer: c. Converts it into a secure formattestbook
9. What does a firewall do in network security?
   a. Controls data flow between devices
   b. Prevents unauthorized access to a network
   c. Repairs compromised hardware
   d. Converts network signals
   Answer: b. Prevents unauthorized access to a networkyeahhub
10. Which protocol is designed to secure web communications?
    a. HTTP
    b. SNMP
    c. SSL/TLS
    d. FTP
    Answer: c. SSL/TLSyeahhub
11. What kind of attack floods a network with excessive traffic to make it unavailable?
    a. Phishing
    b. SQL Injection
    c. Denial-of-Service (DoS)
    d. Man-in-the-Middle (MITM)
    Answer: c. Denial-of-Service (DoS)yeahhub
12. VPN stands for:
    a. Virtual Public Network
    b. Virtual Private Network
    c. Verified Protocol Network
    d. Virtual Packet Node
    Answer: b. Virtual Private Networkyeahhub
13. What is the primary purpose of an intrusion detection system (IDS)?
    a. Encrypt user data
    b. Detect unauthorized access
    c. Repair network hardware
    d. Monitor network speed
    Answer: b. Detect unauthorized accessyeahhub
14. What is a common authentication method in network security?
    a. CAPTCHA
    b. Biometric scanning
    c. Cookies
    d. Third-party verification
    Answer: b. Biometric scanningyeahhub
15. What does “zero trust” mean in network security?
    a. Always assuming a network is secure
    b. Trusting all devices by default
    c. Verifying every access, regardless of origin
    d. Avoiding use of encryption
    Answer: c. Verifying every access, regardless of originyeahhub
16. Which attack exploits software vulnerabilities to gain unauthorized access?
    a. Malware injection
    b. Buffer overflow
    c. Social engineering
    d. Packet sniffing
    Answer: b. Buffer overflowyeahhub
17. Two-factor authentication (2FA) involves:
    a. Encrypting all user data
    b. Verifying identity in two independent steps
    c. Using two passwords at once
    d. Connecting to two networks
    Answer: b. Verifying identity in two independent stepsyeahhub
18. What role does a DMZ (Demilitarized Zone) play in network security?
    a. Isolates sensitive data
    b. Stores backup data
    c. Manages network firmware
    d. Provides public access with restricted permissions
    Answer: d. Provides public access with restricted permissionsyeahhub
19. What is the function of a honeypot?
    a. Stores sensitive user data
    b. Attracts and analyzes attackers
    c. Encrypts network packets
    d. Blocks phishing emails
    Answer: b. Attracts and analyzes attackersyeahhub
20. Why is network segmentation important?
    a. Increases data storage
    b. Divides network into smaller, secure sections
    c. Combines all network resources
    d. Improves encryption algorithms
    Answer: b. Divides network into smaller, secure sectionsyeahhub
21. What is a “man-in-the-middle” attack?
    a. Eavesdropping and manipulating communications
    b. Blocking network connections
    c. Sending spam emails
    d. Encrypting user data
    Answer: a. Eavesdropping and manipulating communicationsyeahhub
22. Which type of malware self-replicates and spreads without a host program?
    a. Trojan horse
    b. Worm
    c. Logic bomb
    d. Backdoor
    Answer: b. Wormscribd
23. What malware is disguised as legitimate software but harms the system?
    a. Trojan horse
    b. Worm
    c. Virus
    d. Rootkit
    Answer: a. Trojan horsescribd
24. What is a logic bomb?
    a. A virus that deletes files
    b. Code set to trigger under specific conditions
    c. An email phishing scam
    d. A firewall bypass method
    Answer: b. Code set to trigger under specific conditionsscribd
25. Which program does not replicate automatically?
    a. Virus
    b. Worm
    c. Trojan horse
    d. Logic bomb
    Answer: c. Trojan horsescribd
26. What does the term “fabrication” refer to in network security threats?
    a. Creating fake data or events
    b. Intercepting messages
    c. Modifying network packets
    d. Flooding the network
    Answer: a. Creating fake data or eventsscribd
27. What does integrity mean in network security?
    a. Allowing only authorized modifications
    b. Encrypting all traffic
    c. Ensuring data is always available
    d. Allowing random access
    Answer: a. Allowing only authorized modificationsscribd
28. What is the primary concern of confidentiality in network security?
    a. Only authorized parties can read data
    b. Only authorized parties can modify data
    c. All data is encrypted during transit
    d. All data is transmitted in clear text
    Answer: a. Only authorized parties can read datascribd
29. Which header in IPv6 provides security services for payload data?
    a. Encrypted Security Payload (ESP) header
    b. TCP header
    c. Source routing header
    d. ICMP header
    Answer: a. Encrypted Security Payload (ESP) headermgmgyp
30. What was the Data Encryption Standard (DES) designed by?
    a. Apple
    b. IBM
    c. Microsoft
    d. Intel
    Answer: b. IBMmgmgyp
31. Which protocol provides security at the application layer?
    a. Pretty Good Privacy (PGP)
    b. Handshake Protocol
    c. Alert Protocol
    d. Record Protocol
    Answer: a. Pretty Good Privacy (PGP)mgmgyp
32. What is message nonrepudiation?
    a. A sender cannot deny sending a message
    b. A receiver cannot refuse a message
    c. Message integrity is ensured
    d. Encryption of all message payloads
    Answer: a. A sender cannot deny sending a messagemgmgyp
33. Which is NOT a typical security service?
    a. Confidentiality
    b. Integrity
    c. Availability
    d. Routing efficiency
    Answer: d. Routing efficiencyuninets
34. What is the primary role of a router in network security?
    a. Routes data packets between networks
    b. Blocks all network traffic
    c. Encrypts every packet automatically
    d. Detects all viruses
    Answer: a. Routes data packets between networksuninets
35. Which of the following best describes a firewall?
    a. A security tool for detecting malware
    b. A system preventing unauthorized network access
    c. A protocol manager
    d. A hardware-based packet sniffer
    Answer: b. A system preventing unauthorized network accessyeahhub
36. What technique helps manage network traffic to prevent congestion?
    a. Flow control
    b. Encryption
    c. Routing
    d. Honeypot deployment
    Answer: a. Flow controluninets
37. What is malware?
    a. Malicious software designed to harm systems
    b. Software for accelerating networks
    c. Secure access protocol
    d. Routing table manager
    Answer: a. Malicious software designed to harm systemstestbook
38. Which term refers to tricking users into revealing sensitive information?
    a. Phishing
    b. Buffer overflow
    c. Packet filtering
    d. VPN tunneling
    Answer: a. Phishingtestbook
39. What does ransomware do?
    a. Encrypts files and demands payment for decryption
    b. Repairs network devices remotely
    c. Protects network against DDoS attacks
    d. Deletes all user passwords
    Answer: a. Encrypts files and demands payment for decryptiontestbook
40. Which security goal ensures network resources are accessible when needed?
    a. Availability
    b. Integrity
    c. Confidentiality
    d. Non-repudiation
    Answer: a. Availabilityscribd
41. What type of security threat involves intercepting communications without modifying content?
    a. Interception
    b. Modification
    c. Interruption
    d. Fabrication
    Answer: a. Interceptionscribd
42. Which protocol helps establish encrypted web sessions?
    a. HTTPS
    b. FTP
    c. SMTP
    d. DNS
    Answer: a. HTTPSyeahhub
43. Which device segments a network to limit broadcast traffic?
    a. Switch
    b. Hub
    c. Modem
    d. Repeater
    Answer: a. Switchuninets
44. A signature in IDS and IPS is a set of:
    a. Routing rules
    b. Predefined malware patterns
    c. Firewall exceptions
    d. User credentials
    Answer: b. Predefined malware patternsuninets
45. What is a primary benefit of using strong passwords?
    a. Reduces chance of unauthorized access
    b. Improves network speed
    c. Increases VPN performance
    d. Avoids packet loss
    Answer: a. Reduces chance of unauthorized accesstestbook
46. Which network security protocol uses public and private keys for encryption?
    a. SSL/TLS
    b. TCP
    c. UDP
    d. ARP
    Answer: a. SSL/TLSyeahhub
47. What is the primary function of access control in networking?
    a. Restrict access to authorized users
    b. Improve routing efficiency
    c. Limit bandwidth usage
    d. Repair devices remotely
    Answer: a. Restrict access to authorized userssanfoundry
48. What kind of attack involves manipulating human behavior to gain access?
    a. Social engineering
    b. Buffer overflow
    c. Brute force
    d. Spoofing
    Answer: a. Social engineeringtestbook
49. Which network segment is often used to host public-facing servers to minimize risk?
    a. DMZ (Demilitarized Zone)
    b. VLAN
    c. Subnet
    d. Private LAN
    Answer: a. DMZ (Demilitarized Zone)yeahhub
50. Which mechanism can quickly block suspicious traffic automatically in modern networks?
    a. Intrusion Prevention System (IPS)
    b. Network switch
    c. Modem
    d. Load balancer
    Answer: a. Intrusion Prevention System (IPS)uninets

1. https://www.sanfoundry.com/computer-fundamentals-questions-answers-network-security/
2. https://testbook.com/objective-questions/mcq-on-network-security–5eea6a0939140f30f369d917
3. https://www.yeahhub.com/top-20-frequently-asked-network-security-mcqs-with-answers/
4. https://www.scribd.com/doc/191588501/Solved-MCQ-of-Computer-Security-and-Network-Security
5. https://mgmgyp.org/mcqs/Notepad/M.Sc.%20I.T/3rd%20Sem/network%20securely.pdf
6. https://www.uninets.com/blog/computer-networks-mcq
7. https://www.studocu.com/in/document/heritage-institute-of-technology/aeie-b-tech/network-security-mcq-questions/70712702
8. https://www.scribd.com/doc/229495035/Network-Security-Cryptography-MCQ-S
9. https://www.scribd.com/document/490391757/network-security-mcq-with-answers-pdf
10. https://www.sanfoundry.com/1000-cryptography-network-security-questions-answers/
11. https://www.interviewbit.com/cyber-security-mcq/
12. https://www.sanfoundry.com/1000-cyber-security-questions-answers/
13. https://www.geeksforgeeks.org/quizzes/network-security-gq/
14. https://www.theknowledgeacademy.com/blog/cyber-security-mcq-and-answers/
15. https://examradar.com/computer-networking-network-security-mcqs/
16. https://www.sanfoundry.com/computer-network-questions-answers-security-management/
17. https://www.sanfoundry.com/network-security-questions-answers-networking-overview-i/
18. https://www.interviewbit.com/computer-network-mcq/
19. https://www.studocu.com/in/quiz/191588501-solved-mcq-of-computer-security-and-network-security/676441