Information Security Interview Questions And Answers

Information Security Interview Questions list for experienced

  1. What is cybersecurity?
  2. What are the elements of cybersecurity?
  3. What are the advantages of cyber security?
  4. Explain SSL
  5. What do you mean by data leakage?
  6. Explain the brute force attack. How to prevent it?
  7. What is port scanning?
  8. Name the different layers of the OSI model.
  9. What is a VPN?
  10. What are black hat hackers?
  11. How to reset a password-protected BIOS configuration?
  12. What is MITM attack?
  13. Define ARP and its working process.
  14. What is the main difference between SSL and TLS?
  15. What is the abbreviation of CSRF?
  16. What is 2FA? How to implement it for a public website?
  17. Define the process of salting. What is the use of salting?
  18. What is SSH?
  19. Is SSL protocol enough for network security?
  20. What is black box testing and white box testing?
  21. Explain vulnerabilities in network security.
  22. Explain TCP Three-way handshake.
  23. Define the term residual risk. What are three ways to deal with risk?
  24. Define Exfiltration.
  25. What is exploit in network security?
  26. List out some of the common cyber-attack.
  27. How to make the user authentication process more secure?
  28. Explain the concept of cross-site scripting.
  29. Name the protocol that broadcast the information across all the devices.
  30. How to protect email messages?
  31. What are the risks associated with public Wi-Fi?
  32. What is Data Encryption? Why it is important in network security?
  33. Explain the main difference between Diffie-Hellman and RSA.
  34. What is a remote desktop protocol?
  35. Define Forward Secrecy.
  36. What is a computer virus?
  37. What is IP and MAC Addresses?
  38. List out the types of sniffing attacks.

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Top Information Security interview questions and answers for freshers and experienced

What is Information Security ?

Answer :

Questions : 1 :: What is cybersecurity?

Cybersecurity refers to the protection of hardware, software, and data from attackers. The primary purpose of cyber security is to protect against cyberattacks like accessing, changing, or destroying...View answers

Questions : 2 :: What are the elements of cybersecurity?

Major elements of cybersecurity are: Information security Network security Operational security Application security End-user education Business continuity...View answers

Questions : 3 :: What are the advantages of cyber security?


Benefits of cyber security are as follows: It protects the business against ransomware, malware, social engineering, and phishing. It protects end-users. It gives good protection for both data...View answers

Questions : 4 :: Explain SSL

SSL stands for Secure Sockets Layer. It is a technology creating encrypted connections between a web server and a web browser. It is used to protect the information in online transactions and digital...View answers

Questions : 5 :: What do you mean by data leakage?

Data leakage is an unauthorized transfer of data to the outside world. Data leakage occurs via email, optical media, laptops, and USB keys.

Questions : 6 :: Explain the brute force attack. How to prevent it?


It is a trial-and-error method to find out the right password or PIN. Hackers repetitively try all the combinations of credentials. In many cases, brute force attacks are automated where the software...View answers

Questions : 7 :: What is port scanning?

It is the technique for identifying open ports and service available on a specific host. Hackers use port scanning technique to find information for malicious...View answers

Questions : 8 :: Name the different layers of the OSI model.

Seven different layers of OSI models are as follows: Physical Layer Data Link Layer Network Layer Transport Layer Session Layer Presentation Layer Application...View answers

Questions : 9 :: What is a VPN?


VPN stands for Virtual Private Network. It is a network connection method for creating an encrypted and safe connection. This method protects data from interference, snooping,...View answers

Questions : 10 :: What are black hat hackers?

Black hat hackers are people who have a good knowledge of breaching network security. These hackers can generate malware for personal financial gain or other malicious reasons. They break into a...View answers

Questions : 11 :: How to reset a password-protected BIOS configuration?

There are various ways to reset BIOS password. Some of them are as follows: Remove CMOS battery. By utilizing the software. By utilizing a motherboard jumper. By utilizing...View answers

Questions : 12 :: What is MITM attack?

A MITM or Man-in-the-Middle is a type of attack where an attacker intercepts communication between two persons. The main intention of MITM is to access confidential...View answers

Questions : 13 :: Define ARP and its working process.

It is a protocol used for finding MAC address associated with IPv4 address. This protocol work as an interface between the OSI network and OSI link layer.

Questions : 14 :: What is the main difference between SSL and TLS?

The main difference between these two is that SSL verifies the identity of the sender. SSL helps you to track the person you are communicating to. TLS offers a secure channel between two...View answers

Questions : 15 :: What is the abbreviation of CSRF?

CSRF stands for Cross-Site Request Forgery.

Questions : 16 :: What is 2FA? How to implement it for a public website?

TFA stands for Two Factor Authentication. It is a security process to identify the person who is accessing an online account. The user is granted access only after presenting evidence to the...View answers

Questions : 17 :: Define the process of salting. What is the use of salting?

Salting is that process to extend the length of passwords by using special characters. To use salting, it is very important to know the entire mechanism of salting. The use of salting is to safeguard...View answers

Questions : 18 :: What is SSH?

SSH stands for Secure Socket Shell or Secure Shell. It is a utility suite that provides system administrators secure way to access the data on a network.

Questions : 19 :: Is SSL protocol enough for network security?

SSL verifies the sender's identity, but it does not provide security once the data is transferred to the server. It is good to use server-side encryption and hashing to protect the server against a...View answers

Questions : 20 :: What is black box testing and white box testing?

Black box testing: It is a software testing method in which the internal structure or program code is hidden. White box testing: A software testing method in which internal structure or program is...View answers

Questions : 21 :: Explain vulnerabilities in network security.

Vulnerabilities refer to the weak point in software code which can be exploited by a threat actor. They are most commonly found in an application like SaaS (Software as a service)...View answers

Questions : 22 :: Explain TCP Three-way handshake.

It is a process used in a network to make a connection between a local host and server. This method requires the client and server to negotiate synchronization and acknowledgment packets before...View answers

Questions : 23 :: Define the term residual risk. What are three ways to deal with risk?

It is a threat that balances risk exposure after finding and eliminating threats. Three ways to deal with risk are: Reduce it Avoid it Accept...View answers

Questions : 24 :: Define Exfiltration.

Data exfiltration refers to the unauthorized transfer of data from a computer system. This transmission may be manual and carried out by anyone having physical access to a...View answers

Questions : 25 :: What is exploit in network security?

An exploit is a method utilized by hackers to access data in an unauthorized way. It is incorporated into malware.

Questions : 26 :: List out some of the common cyber-attack.

Following are the common cyber-attacks which can be used by hackers to damage network: Malware Phishing Password attacks DDoS Man in the middle Drive-by downloads Malvertising Rogue...View answers

Questions : 27 :: How to make the user authentication process more secure?

In order to authenticate users, they have to provide their identity. The ID and Key can be used to confirm the user's identity. This is an ideal way how the system should authorize the...View answers

Questions : 28 :: Explain the concept of cross-site scripting.

Cross-site scripting refers to a network security vulnerability in which malicious scripts are injected into websites. This attack occurs when attackers allow an untrusted source to inject code into...View answers

Questions : 29 :: Name the protocol that broadcast the information across all the devices.

Internet Group Management Protocol or IGMP is a communication protocol that is used in game or video streaming. It facilitates routers and other communication devices to send...View answers

Questions : 30 :: How to protect email messages?

Use cipher algorithm to protect email, credit card information, and corporate data.

Questions : 31 :: What are the risks associated with public Wi-Fi?

Public Wi-Fi has many security issues. Wi-Fi attacks include karma attack, sniffing, war-driving, brute force attack, etc. Public Wi-Fi may identify data that is passed through a network device like...View answers

Questions : 32 :: What is Data Encryption? Why it is important in network security?

Data encryption is a technique in which the sender converts the message into a code. It allows only authorized user to gain access.

Questions : 33 :: Explain the main difference between Diffie-Hellman and RSA.

Diffie-Hellman is a protocol used while exchanging key between two parties while RSA is an algorithm that works on the basis two keys called private and public...View answers

Questions : 34 :: What is a remote desktop protocol?

Remote Desktop Protocol (RDP) is developed by Microsoft, which provides GUI to connect two devices over a network. The user uses RDP client software to serve this purpose while other device must run...View answers

Questions : 35 :: Define Forward Secrecy.

Forward Secrecy is a security measure that ensures the integrity of unique session key in event that long term key is compromised.

Questions : 36 :: What is a computer virus?

A virus is a malicious software that is executed without the user's consent. Viruses can consume computer resources, such as CPU time and memory. Sometimes, the virus makes changes in other computer...View answers

Questions : 37 :: What is IP and MAC Addresses?

IP Address is the acronym for Internet Protocol address. An internet protocol address is used to uniquely identify a computer or device such as printers, storage disks on a computer network. MAC...View answers

Questions : 38 :: List out the types of sniffing attacks.

Various types of sniffing attacks are: Protocol Sniffing Web password sniffing Application-level sniffing TCP Session stealing LAN Sniffing ARP...View answers
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