Top 50 Cyber Security Interview Questions


Cyberattacks have become common in the digital world, and to tackle these attacks, there is a need for warriors who can detect, restrict, and foresee these threats. This has demanded cyber security professionals. So go through these cyber security questions.

Top Cyber Security Interview Questions

Here are the cyber security interview questions.

  1. Explain cyber security.

Cyber security is the protection of software, hardware, and data from various attackers.

2. What is the main purpose of cyber security?

 The main purpose of cyber security is to protect against various cyber attacks. 

3. What do cyber security professionals do?

Cyber security professionals prevent cyber attacks.

4. What are the cyber security elements?

Information, network application, operational security, end-user education, business continuity, and planning.

5. What are the various benefits of cyber security?

Protection of the business against malware, ransomware, phishing, and social engineering and protecting the end-user. The professionals also give protection to the data as well as to the networks. They increase the recovery time after there is a breach and also prevent any unauthorized access.

6. What is the full form of IDS?

IDS stands for intrusion Detection System 

7. What does IDS do?

IDS detects any intrusion.

8. What is the full form of IPS?

IPS stands for Intrusion Prevention System 

9. What does PDS do?

PDS is where the system detects the intrusion and then prevents it.

10. What is the full form of the CIA?

CIA stands for Confidentiality, Integrity, and Availability

11.What is the CIA?

This is a well-known model that has been designed to develop a security policy. 

12.Explain confidentiality in the CIA?

Confidentiality ensures that any sensitive data is accessed only by the user who is authorized to gain access. 

13.What does integrity mean in the CIA?

Integrity means that the information is present in the correct format. 

14.What is available in the CIA?

Availability ensures that the resources and the data is available to the users who need them.

15.What is a firewall?

A firewall is a security system that has been designed for a network.

16.What is the firewall settings on?

 It is set on the network or system boundaries, which monitors and helps to control the traffic network. 

17.What does the firewall help in?

The firewall helps to protect the network or the system from a malware virus.

18.What is traceroute?

Traceroute is a tool that shows the way that is packeted. 

19.How is the traceroute tool used?

The tool is used in cases when the packet fails to reach the destination. The tool finds use to check where the connection will break or step to identify the failure.

20.What is HIDS used for?

HIDs are used to detect if there is an intrusion.

21.What is NIDS?

NIDS is used in a network, and it monitors the traffic of every device on a network.

22.What is the full form of SSL?

SSL stands for Secure Sockets Layer.

23.What is SSL?

SSL is a technology that creates encrypted connections between the web browser and a web server

24.Where is SSL used?

The information is protected using the case of digital payments or online transactions, which maintains the privacy of data. 

25.What is data leakage?

When there is a transfer of unauthorized data to the world outside, then this is data leakage. 

26.How can data leakage be caused?

It can be caused by an optimal medium, laptop, or email.

27.Explain what port scanning is?

Port scanning is the method by which the open services and ports are identified. 

28.How do hackers use port scanning?

Hackers use the port scanning method to find information to be used for malicious purposes.

29.What are the different OSI model layers?

Physical, data link, network transport, session, presentation, and applications are the different layers of OSI.

30.What is the full form of VPN?

VPN is a Virtual Private Network.

31.What does VPN do?

VPN is a network connection method that is used to create safe and encrypted connections. 

32.How does VPN save data?

The method protects the data from snooping and interference.

33.What are black hat hackers?

They are those who know breaching network security.

34.Why do black hat hackers break into the system?

They break into a system to steal, modify, or to destroy the data.

35.Who is a white hat hacker?

White hat hacker is a security specialist, and they have specialization in penetration and testing.

36.Who are grey hat hackers?

The grey hat hackers are the computer hackers, and they violate the ethical standards but do not carry any malicious intention.

37.What is a MITM attack?

The Man-in-the-Middle is an attack where the attacker will intrude into the communication between two people and access the confidential information.

38.What is ARP?

ARP is a protocol that is used to find the MAC address that is associated with the IPv4 address

39.What is the ARP working process?

The ARP is an interface between the OSI link layer and the OSI network.

40.What is Botnet?

The botnet is the number of devices that are connected with the internet that are controlled and infected by the malware.

41.What is SSL used to verify?

SSL helps in verifying the senders’ identity and helps to track down the person with whom you are communicating with.

42.What is TLS?

TLS helps to form a secure channel between two people.

43.What is the full form of CSRF?

The full form of CSRF is Cross-Site Request Forgery.

44.What is 2FA?

2FA stands for two-factor authentication.

45. What is 2FA used for?

The 2FA is a security process that is used to identify the person who is gaining access to an account.

46.What is asymmetric encryption?

Asymmetric encryption needs different keys for decryption and encryption.

47.What is asymmetric encryption

Symmetric encryption needs the same key for encryption and decryption.

48.What is XSS?

XSS stands for cross-site scripting.

49.What is WAF

WAF stands for Web application Firewall.

50.What do HIDs do?

 HIDS monitors the system activities and any specific device traffic that is suspicious.


The career options for cyber security professionals look promising. So if you wish to clear an interview for your job as a cyber security professional, then go through the cyber security interview questions listed above.

So, have you made up your mind to make a career in Cyber Security? Visit our Master Certificate in Cyber Security (Red Team) for further help. It is the first program in offensive technologies in India and allows learners to practice in a real-time simulated ecosystem, that will give you an edge in this competitive world.

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