Firewall_MCQ Computer_Virus_MCQ for Cybersecurity Accenture

Firewall_MCQ

1. Question Which of the following best describes a firewall? A. A device that filters network traffic B. A software that provides antivirus protection C. A type of physical barrier D. A program that scans for malware

2. Answer The correct answer is: A. A device that filters network traffic

3. Question What is the primary function of a firewall? A. To block unwanted emails B. To filter incoming and outgoing network traffic C. To prevent hardware failures D. To provide backup for data

4. Answer The correct answer is: B. To filter incoming and outgoing network traffic

5. Question Which type of firewall filters traffic based on predefined rules at the network layer? A. Packet-filtering firewall B. Stateful inspection firewall C. Proxy firewall D. Application-layer firewall

6. Answer The correct answer is: A. Packet-filtering firewall

7. Question What does a stateful inspection firewall do? A. It blocks all incoming traffic B. It monitors active connections and makes decisions based on the state of the connection C. It inspects only the packet headers D. It provides end-to-end encryption

8. Answer The correct answer is: B. It monitors active connections and makes decisions based on the state of the connection

9. Question Which layer of the OSI model do most firewalls operate at? A. Physical Layer B. Data Link Layer C. Network Layer D. Application Layer

10. Answer The correct answer is: C. Network Layer

11. Question A proxy firewall operates primarily at which layer of the OSI model? A. Transport Layer B. Session Layer C. Network Layer D. Application Layer

12. Answer The correct answer is: D. Application Layer

13. Question What is a demilitarized zone (DMZ) in network security? A. A secure internal network B. A buffer zone between the public internet and an internal network C. A type of malware D. A secure email server

14. Answer The correct answer is: B. A buffer zone between the public internet and an internal network

15. Question Which type of firewall is considered to be the most secure? A. Packet-filtering firewall B. Stateful inspection firewall C. Proxy firewall D. NAT firewall

16. Answer The correct answer is: C. Proxy firewall

17. Question What is the main disadvantage of a packet-filtering firewall? A. It cannot block malware B. It does not provide NAT functionality C. It cannot make decisions based on the content of the data D. It requires too much processing power

18. Answer The correct answer is: C. It cannot make decisions based on the content of the data

19. Question Which of the following is a common feature of a firewall? A. Encryption B. Intrusion Detection System (IDS) C. Access control lists (ACLs) D. Data backup

20. Answer The correct answer is: C. Access control lists (ACLs)

21. Question Which of the following is NOT a type of firewall architecture? A. Dual-homed host B. Screened subnet C. Virtual firewall D. Triple-router configuration

22. Answer The correct answer is: D. Triple-router configuration

23. Question What does NAT stand for in the context of firewalls? A. Network Address Translation B. Network Access Technology C. Node Authentication Tool D. Network Application Transfer

24. Answer The correct answer is: A. Network Address Translation

25. Question Which type of firewall rule allows all traffic unless explicitly denied? A. Default allow B. Default deny C. Whitelist D. Blacklist

26. Answer The correct answer is: A. Default allow

27. Question What is an advantage of using a hardware firewall? A. It is easier to update than software firewalls B. It is generally faster and more reliable C. It can be installed on multiple devices simultaneously D. It is free to use

28. Answer The correct answer is: B. It is generally faster and more reliable

29. Question In a firewall, what does the term "deep packet inspection" refer to? A. Inspecting only the packet headers B. Inspecting the data within the packet C. Blocking all incoming traffic D. Allowing all outgoing traffic

30. Answer The correct answer is: B. Inspecting the data within the packet

31. Question What is a stateful firewall unable to do? A. Maintain state information about active connections B. Filter packets based on the state of the connection C. Monitor the application-layer data D. Track the state of connections over time

32. Answer The correct answer is: C. Monitor the application-layer data

33. Question Which of the following is a common firewall deployment scenario? A. Single-layer firewall B. Dual-layer firewall C. Multi-layered defense D. All of the above

34. Answer The correct answer is: D. All of the above

35. Question What is a common limitation of traditional firewalls? A. Inability to filter encrypted traffic B. High cost of deployment C. Limited to physical devices only D. Incompatibility with modern network protocols

36. Answer The correct answer is: A. Inability to filter encrypted traffic

37. Question Which type of attack can a firewall help mitigate? A. SQL injection B. Phishing C. Denial of Service (DoS) D. Social engineering

38. Answer The correct answer is: C. Denial of Service (DoS)

39. Question Which of the following is a feature of an application-layer firewall? A. It examines traffic at the network layer B. It can filter based on user identities C. It only allows HTTP traffic D. It cannot be configured with ACLs

40. Answer The correct answer is: B. It can filter based on user identities

41. Question What is the role of a VPN in conjunction with a firewall? A. To provide end-to-end encryption B. To block all external traffic C. To manage network addresses D. To filter packets at the application layer

42. Answer The correct answer is: A. To provide end-to-end encryption

43. Question Which of the following protocols might a firewall commonly filter? A. HTTP B. TCP C. FTP D. All of the above

44. Answer The correct answer is: D. All of the above

45. Question Which of the following is a common misconception about firewalls? A. They can block all types of cyberattacks B. They can be either hardware or software-based C. They can filter traffic based on IP addresses D. They are an essential part of network security

46. Answer The correct answer is: A. They can block all types of cyberattacks

47. Question What is an Intrusion Prevention System (IPS)? A. A type of firewall that blocks known attacks B. A software that scans for viruses C. A device that detects and prevents network attacks D. A tool for monitoring network performance

48. Answer The correct answer is: C. A device that detects and prevents network attacks

49. Question Which of the following can enhance the effectiveness of a firewall? A. Regular updates B. Strong encryption C. User education D. All of the above

50. Answer The correct answer is: D. All of the above