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Top 20 Network Security Interview Question and Answers

Top 20 Network Security Interview Question and Answers

Are you planning to have a career in the field of network security? Are you worried about the upcoming interview? You need to be! The demand for network security experts is getting higher, and so is the package associated with the respective post. There are a number of students applying for this course to have an exciting career ahead in the domain. So, the competition is quite high.

It is important that you are well prepared for the network security interview so that you can enhance your chances of getting selected. If you are thinking about the questions that you need to be prepared for, then we are here to help you with some of them. Below mentioned are a few of the interview questions that you must know before moving ahead. Take a look:

1. How do you get yourself educated about network security-related advancements and news?

There are several forums and platforms available online where one can find all the news and advancements related to the world of network security. One can easily find maximum information about the same on different social media platforms like Reddit, Twitter, and more. (Also, make sure to share one of the latest news related to this field)

2. How can you keep the WAP protected?

There are several ways you can keep your WAP protected, and the popular ones are mentioned below, take a look:

  • Not transmitting the SSID
  • Using WPA2(Wi-Fi Protected Access II)
  • Employing MAC address filtering

3. Which False Positive or False Negative is terrible in terms of firewall detection?

The answer has to be false negative. The reason is that a false positive is a very relevant result that got flagged falsely. So, it is certainly not difficult to get the same corrected. But, when it comes to a false negative, this means that something seriously unacceptable has occurred, and it remained undetected through a firewall.

4. Name the three types of user authentication?

The three types of user authentication are:

  • Something you know – This segment is comprised of passwords and pins. This can be remembered without any hassle.
  • Something you have – This segment is comprised of physical objects that includes USB drives or smartphones.
  • Something you are – This segment is comprised of facial expressions, fingerprints, or palms.

5. Can you differentiate between White hat hackers, Black hat hackers, and Grey hat hackers?

  • The hackers who are testing a system to keep the vulnerability secure and protected are called white hat hackers. They help cybersecurity analysts.
  • The hackers that get into your computer system by passing through security protocols and are primarily responsible for scripting malware are called Black hat hackers.
  • The hackers who are not malicious hackers and are violating the rules are acknowledged as Grey hat hackers.

6. Can you differentia between Symmetric And Asymmetric Encryption?

When it comes to Symmetric encryption, only uses one key for the purpose of decryption and encryption. When it is asymmetric encryption, it uses two different keys that are the public key for the purpose of encryption and the also uses private key for the need for decryption.

7. Which Among These Is A More Secure Project: Open Source Or Proprietary?

When compared to proprietary, Open source has to be more secure and safe. Here, the white hat hackers can get the problem resolved without any hassle.

8. Explain The Salting Process?

When it comes to the salting process, it is basically an approach that is acknowledged as password hashing. It’s a unique value, and it is used at the end of the password so that a specific hash value can be generated. This is done to get the passwords secure.

9. How to secure a Linux Server? 

To keep your Linux operating system secure and safe, you need to take complete care of the operating system and encryption and also ensure that the attack surfaces are kept to a minimum.

10. How do you deal with “Man In The Middle Attack (Eavesdropping)”? 

This type of attack is generally happening when there is a third party involved. This means that the third party is controlling and keeping track of all the conversation. The best way to deal with it is to work on end-to-end encryption and also not use free Wi-Fi networks.

11. What are the different types of common cyberattacks?

Some of the common forms of cyberattacks are:

  • Smurf attacks
  • Man in the middle of eavesdropping
  • Ping of death attacks
  • Teardrop attacks
  • DDoS
  • Drive-by attacks

12. What is the objective of Information Security Management?

The primary objectives of information security management are to:

  • Protect the privacy of all the users
  • Avert unauthorized network access
  • Keep all sensitive information secure and sound from fraud and corruption
  • Safeguard the uninterrupted network availability for the users
  • Protect the networks from hackers, malware, and DDoS attacks

13. Explain the best security measures for a personal network?

Few of the best security measure to keep the personal network secure and protected is using:

  • Firewalls
  • Antivirus software
  • Operating system updates
  • Password updates
  • VPN

14. HTTPS Or SSL Which one is better?

When it comes to HTTPS, is HyperText Transfer Protocol known for providing secure and safe communications. Talking about SSL, it is just a protocol that keeps communications online secure.

15. What can be the result of an attack on a computer network?

An attack on the computer network can result in the form of :

  • Data or information loss
  • Assets misused
  • DoS(Denial of Service)
  • DDoS attack(Distributed DoS)
  • Loss of trust

16. Tell the best defenses against a brute force attack on the login network?

The best defenses are:

  • You need to keep the password long as it enhances its strength.
  • Include special characters, numbers, and uppercase and lowercase letters in the password.
  • Have a limit set for the login. This means that one can try to log in a particular number of times. if the attempt fails, it throws an error.

17. Explain Firewall?

When it comes to a firewall, it is basically a network security mechanism that is considered for the purpose of auditing all the outgoing and incoming network movement. Accordingly, it decides whether to allow or block specific network traffic as per the set guidelines.

18. Explain Data Leakage?

Data leakage is the process of transferring sensitive data illegitimately to an external target stop from within the company network. This term is considered for defining the sensitive data that has been transmitted physically or electronically. But, it has been seen that data leakage threats generally occur through the web and email.

19. Differentia between IDS And IPS?

  • When it comes to IDS or Intrusion Detection systems, it is considered for the purpose of monitoring the system and sending the alert as and when it notices anything suspicious.
  • When it is about IPS, it is considered for the purpose of controlling the system and averting packets from delivering if there is any suspicious aspect found.

20. Define Forward Secrecy?

When it comes to Forwarding secrecy, it specifies an encryption system that modifies the keys that are considered to decrypt and encrypt sensitive information regularly.

Wrap Up

These are the most important network security interview questions that you must know about before moving ahead. You can always connect with Securium Solutions to prepare well in the respective domain so that you can enhance your chances of selection a lot more. Good luck!


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