Cyber Security Interview

Top 20 Cyber Security Interview Questions and Answers

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Cyber Security remains one of the demanding techniques in a world which is driven by technology today. Accordingly, if you want to explore your career in the field of Cyber Security you need to prepare well enough for interviews. The following blog will provide you with top 20 cyber security interview questions and answers. These Cyber Security Analyst interview questions are crucial for your basic level preparation in the field.

Cyber Security Interview Questions and Answers 

1. What is Cyber Security?

The process through which protection of hardware, software and data is enabled for protection from hackers is called Cyber Security. The importance of Cyber Security entails in its purpose of inducing Cyber Security techniques is to protect different Cyber-attacks. It may include attacks like changing, accessing or destroying sensitive data.

2. What are the fundamental elements of Cyber Security ?

Given below are the fundamental elements of Cyber Security :

  • Information security
  • End-user security
  • Operational security
  • Application security
  • Network security
  • Business continuity planning

3. What are the main advantages of Cyber Security?

Following are the Advantages of Cyber Security :

  • Protecting businesses against unauthorised access like ransomware, malware, phishing and social engineering.
  • Ensuring protecting to end-users and improving business continuity management
  • Improving the confidence of stakeholders
  • Providing adequate protection for data and networks
  • Increasing recovery time in case of any data breach.

4. What is Cryptography?

The practice and study of the various techniques that useful for securing information and enabling communication with the purpose of data protection from third-parties.

5. What is the difference between IDS and IPS?

IDS (Intrusion Detection System) helps in detecting intrusions and with the help of an administrator helps in preventing intrusion carefully. On the other hand, IPS (Intrusion Prevention System) ensures to find the intrusion and prevent it effectively for better protection.

6. Explain the CIA Model

Confidentiality, Integrity and Availability (CIA) model is a highly popular and common model for developing security policy. It implies:

  • Confidentiality: ensures that confidential and private data is only accessible to the authorised users.
  • Integrity: this stands for information being in the right format.
  • Availability: ensures that data and other resources that are essential are available to the users who need them.

7. Define The Firewall

A firewall refers to a device of network security mainly designed for monitoring incoming and outgoing traffic. It is useful for blocking data based on the security rules. Firewalls are the best option for protecting network from malware, viruses, worms and content filtering.

8. What is Traceroute and how can we check it?

Traceroute refers to the network diagnostic tool that is useful for tracking real path of data packet on an IP address from the source to the final destination. With the help of traceroute, it is possible to report all the IP Addresses of routers and ensures to record the time taken for each hop. The primary purpose of the traceroute is to check the breaks in connection, identifying the point of failure.

You can check traceroute using the command prompt (cmd), write “tracert” and then enter any domain name after a single space.

9. What is the difference between HIDS and NIDS?

HIDS detects intrusions and monitors suspicious activities and traffic in the system of any particular device. NIDS on the other hand, which uses network monitors the traffic of all devices. Significantly, HIDS requires installation on every host it performs in while it can clearly monitor multiple hosts at a time.

10. What is SSL and Why we need to use it?

SSL is a technology helpful for creating encrypted connections between the web servers and web browsers. You need to use it because it is compulsory for every website to rank in first page of Google and protects online transactions, users’ data and digital payments.


11. Define Data Leakage.

Data Leakage refers to the unauthorised transmission of data from a network to an external network or destination. It occurs via mail, Optical media, USB keys or laptops.

12.  What is the Brute Force Attack and How to prevent it?

The brute force attack refers to the trial and error that guesses login information, or PIN or encryption keys. Consequently, hackers can make possible ways to try and guess the credentials one by one. With the help of Brute Force attacks that is automated, using a password dictionary containing millions of words, a password is made to use. You can try to minimise the brute force using the following ways:

  • Setting up password length
  • Using complex password
  • Setting up limits to login failures.

13. Define Port Scanning

A particular host that contains the name of identification of the open ports and services is referred to as Port Scanning. Attackers make use of this technique in finding the information for conducting malicious practices.

14. Enlist the names of the OSI Model Layers

The seven layers in the OSI Model are:

  • Physical layer
  • Data link layer
  • Network layer
  • Transport layer
  • Session layer
  • Presentation layer
  • Application layer


15. What is VPN?

A VPN is a virtual private network. It is a type of technology that enables you to use your device (such as a computer, smartphone, or tablet) to create a safe and secure connection with the internet. All of the data you send and receive when using a VPN is encrypted as it passes via a private server. It will be considerably more difficult for anyone attempting to spy on or listen in on your internet activity as a result.

16. Who are the Black Hat Hackers?

Black Hat Hackers are people or organisations that employ hacking techniques for immoral or harmful ends. They take part in theft of private information, financial fraud, the dissemination of malware or viruses, the deployment of DDoS assaults, and other types of cybercrime.

17. Who are the White Hat Hackers?

Ethical hackers and penetration testers are other names for white hat hackers. They employ their talents to identify security flaws in computer systems and networks and then notify the owners or vendors of the systems so that the flaws can be rectified before hostile actors can use them against them.

18. Who are the Grey Hat Hackers?

Grey Hat Hackers are individuals or groups who use hacking methods for both ethical and immoral purposes, typically based on the situation. They may act in ways that are legally prohibited or unethical, but they are not always doing so maliciously. They occasionally employ their skills for humanitarian purposes as well.

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19. How to resent the password-protected BIOS Configuration?

There are various ways to rest the BIOS Configuration which are:

  • Remove CMOS Battery
  • Utilising software
  • Motherboard Jumper
  • By using MS-DOS

20. Do you know about MITM Attack?

Man in the Middle or MITM refers to the attack where the attacker involves in intercepting the lines of communication between two networks or people. MITM works primarily to access confidential information.


Thus, the above blog has been able to present you with some of the top Cyber Security basic interview questions. These Cyber Security interview questions will help you expand learn and prepare for your job role as a security provider in the cyber world. You may also find significant Cyber Security interview questions for freshers and Cyber Security interview questions for experienced.  With the help of Data Science job guarantee program that Pickl.AI offers, you will find yourself learning the use of different tools that can help you explore job roles in Cyber Security. 


  • Asmita Kar

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    I am a Senior Content Writer working with Pickl.AI. I am a passionate writer, an ardent learner and a dedicated individual. With around 3years of experience in writing, I have developed the knack of using words with a creative flow. Writing motivates me to conduct research and inspires me to intertwine words that are able to lure my audience in reading my work. My biggest motivation in life is my mother who constantly pushes me to do better in life. Apart from writing, Indian Mythology is my area of passion about which I am constantly on the path of learning more.