Cybersecurity Interview Questions and Answers 2021

By Nandini 

Last updated on Dec 7 2021

Cybersecurity Interview Questions and Answers 2021

Best Cybersecurity Interview Questions and Answers 2021


Technology has really changed the entire world. In today's date, we can say that we live in a completely digital world where life without technological gadgets is completely impossible. When we take a look around, this life is dependent on the usage. But with the growth of Cybercrime also happened. Cybercrime is basically performing criminal activities with the help of a computer and a network. The victims of cybercrime can either be an individual, an organization, or factors of national interest.


But it is very important to protect these organizations against cybercrime. Cybercriminal activities and protect the network used by the usage of cybersecurity. Cybersecurity is considered the only defense mechanism adopted by the organization to protect against cyber attacks. A lot of professionals have shown interest to work as cybersecurity professionals. Cybersecurity professionals are very high as cybersecurity is very important for every organization. Along with certification, it is also very important to know cybersecurity interview questions. these questions are allowed the professional to tackle the interview round of organizations to get a job as a cybersecurity professional.



Basic Level Cybersecurity Interview Questions and Answers


  1. What do you mean by cybersecurity?

Cybersecurity can be considered to be a defense mechanism that is used by a lot of people all around the world against cybercrime. It protects the hardware, software, and the data and information present in the device from potential cybercriminals. Cybersecurity is considered one of the most important sectors in an organization as it protects all the organization's data and information from getting stolen by cybercriminals. The primary purpose of why cybersecurity is an important part of every organization is because it prevents the data from getting stolen. Protect the network, which is used by the organization. Cybersecurity is active is actually not specific to organizations only. A lot of individuals use cybersecurity information


  1. What are the different components or elements of cybersecurity? 

Cybersecurity is such complex that there are many components that makeup cybersecurity as a whole. Cybersecurity information security, network security, operational security, application security, end-user education, and continuity planning business are major components of cybersecurity. All the different components of cybersecurity or different cybersecurity elements help in the overall protection of the data and information company. They look After the different sectors to fulfill the overall requirement.


  1. Mention a few advantages of cybersecurity.

As you know that the cybersecurity sector is one of the most desired sectors in the organization, it provides your organization with many benefits for which it is given a lot of importance. Organizations that don't have a proper cybersecurity system have always used many troubles when it comes to keeping the data safe. Having a well-developed system is very important to have an overall competitive growth of the organization. The first benefit of cybersecurity is that this helps a particular organization protect themselves and their own business from different cybercrime such as hacking, malware attacks, phishing, and many more. Cybersecurity is also focused on the protection of end-user, which makes it very desirable. Cybersecurity is not specific to the data and information only. It also helps in protecting the network and applications which are used throughout the organization. Usage of good cybersecurity systems helps in increasing the recovery time after a breach situation. Completely restrict unauthorized use of your sweet and sure that all the organization's data and information are safe and secure.


  1. What do you mean by cryptography?

When we talk about the network, we see that it is a huge place. There are many users, broadcasters, and a lot of third parties as well. The third parties, which are known as adversaries, are often related to stealing sensitive messages sent from the user to the receiver. This is one of the most dangerous forms of Cybercrimes as it steals all the sensitive messages that are being sent. The only way information can be protected from these adversaries is by using the technique known as cryptography. Cryptography is actually in accord with the original message it is transformed into. This ensures that all the data and information sent in the message are just limited to the sender and the receiver only.


  1. How will we differentiate between IDS and IPS?

IDS is the acronym used for intrusion detection systems, and IPS is the acronym used for the intrusion prevention system. The basic difference between IDS and IPS is that IDS is actually a monitoring system, whereas IPS is actually a controlling system. IDS does not have any relation with the alteration of network packets. In contrast, IPS has a great relationship with creating restrictions in the delivery of packets about the content stored in the package. IDS and IPS both have a very important role in the world of cybersecurity 


  1. What do you mean by the CIA?

CIA is actually a very important component of cybersecurity. CIA is the action that is used for confidentiality, integrity, and availability. It is actually a very popular model whose primary purpose was to help develop security policies. Three primary concepts built up the CIA. The first concept is confidentiality. Confidentiality is completely devoted to all the sensitive data and information of a user in an organization. Confidentiality is the CIA's first component, which takes all the data and information to the authorized user only. Integrity is the second component of the CIA, which focuses on providing accurate and right format while transmitting any information. Availability is focused on access and presence of all the data and information with the user who has any data requirement—these three components built up the CIA as one of the most fundamental pillars of cybersecurity.


Intermediate Level Cybersecurity Interview Questions and Answers


  1. What do you mean by a firewall? 

A firewall is actually a defense system that is used in cybersecurity. But for the sure firewall is not as simple as it sounds. The primary work of a firewall is to protect the network, which is used by the organization. The design of firework is done in a specific way to be completely specified to protect the network. A firewall is actually set in the boundary of a network. The system helps monitor all the network traffic and helps maintain all the users who are using the network. A firewall is very beneficial to protect the organization against any potential malware attacks. Projecting the network is very important as all the specific data is being transferred through the network only. As a firewall prevents content filtering and remote access, it is considered an ideal design to protect the network.


  1. What do you mean by a traceroute? 

As we know that when a network or data is transferred there usually segmented. All the segment data is then formed into packets that contain different segments of different data. A tool designed to help provide the packets with the rightful packet path is known as traceroute. Traceroute is actually a tool that helps provide checkpoints to the packet, which ensures all the points through which the packet should be passed. The usage of traceroute is only seen when a packet seems to not reach its destination. Then check the entire passage to identify connection breakage to prevent the failure of delivery of the package. Traceroute is very beneficial for many organizations as it ensures proper connectivity of all the different points through which the packet should be passed for transmitting data.


  1. What are the differences between HIDS and NIDS?

The primary difference between HIDS and NIDS is based on usage and functionality. HIDS is there is used for host-based intrusion detection systems. This is a system that helps in the detection of different intrusions. HIDS is extremely beneficial and functional in monitoring the computing systems and the network packets to help identify a host-based intrusion. NIDS, on the other hand, is the acronym used for network intrusion detection systems. The NIDS is a very functional part of the organization as it helps identify loopholes where hackers are performing any form of activity. The primary goal of a network intrusion detection system to identify different actions that are currently happening over the network unauthorized activities that are functional in the network.


  1. What is the meaning of SSL? 

SSL is used for the secure sockets layer. What is a very beneficial feature in cybersecurity, which primarily deals with the creation of encrypted connections? The secure socket locker creates encrypted connections, which is established between the web server and the web browser. It helps in the proper reflection of data and information transmitted from the network in a very precise way. The secure sockets are beneficial as they also help protect all the data and information when having any online transactions. So it also helps make a safe atmosphere for your monetary transactions over the internet without any of the data being stolen. Monetary safety is a very important feature as it protects all the amount stored in the user's bank, which is connected to the devices. It's a very beneficial feature of cybersecurity as that helps property development of monetary sanctions in a very safe and secure way.


  1. What is the basic meaning of data leakage?

It might sound very simple, but data leakage is actually theft of data information through unauthorized sources. It is actually a form of cybercrime that is completely related to accepting data and information from the user's device in a very authorized manner. This is done by hacking through malware attached where is the cybercriminal gains complete access into the user's device and steals all the sensitive data and information. Cybercriminals mostly look forward to weak loopholes over the internet or the network through which they can gain access. Data leakage is one of the biggest of many users as it can be a great threat to personal and professional life. Data leakage can happen through email, optical media, and a lot more.


  1. What do you mean by brute force attack, and how can it be prevented?

Every user of the internet has faced a little trouble dealing with the passport at one point in time. The trial and error method, which helps find the right password over a particular internet portal, is called a brute force attack. There are two types of brute force attack which is used over the internet. Firstly, when the user starts entering multiple passwords of their own account to gain access back after forgetting the password.


The second situation is where cybercriminals continuously potential passwords. The second equation is what is considered a cybercrime. The hackers use a different combination of alphabets and letters to finally given the right password. There are many cases in which the user has actually save their passwords through which brute force attacks automatically generate or create login passwords for the user. This brute force attack feature is very dysfunctional and can be very dangerous for the user as the cybercriminal can misuse the data and information from the internet portal. 


Brute force attacks can also be prevented. It can be done in three major ways. The first one is by creating a password length. Password length is a very important feature was created by internet portals to increase the safety of data. The length of the password plays a very crucial role as it increases the difficulty of getting the password, and the criminal can't guess through the trial and error method. The next episode by increasing the complexity of the password. This is done by involving the alphabet, symbols, and letters at the same time. This makes it very difficult for the cybercriminal to gain access. The most important feature of a lot of internet bottles to prevent brute force attacks is by setting up limitations of what the login failures.


  1. What do you mean by port scanning?

Every specific host lot of open ports and services that are available over the portal. The only way to identify please open ports and services over the specific host is by port scanning. This helps in identifying these places over the specific host. A lot of hackers actually use port scanning to identify all the information for performing criminal activities. Port scanning can be considered to be constructive and destructive activities at the same time as hackers can misuse this technique to identify the information for the performance of malicious activities.


Advanced Cybersecurity Interview Questions and Answers


  1. What are the different layers that are used in the OSI model?

OSI is used for open system interconnection modeling. The primary function of this model is true to standardize different modes of communication to telecommunication devices. It is very beneficial to enhance the mode of communication through these telecommunication devices with the proper restrictions over the usage of networking. The OSI model is made up of several layers, which help in the fundamental construction of this model. There are a total of seven layers in the OSI model. The 7 layers are the physical layer, the data link layer, the network layer, the transport layer, session layer, presentation layer, and application layer. The different layers of this model solve different issues and problems which are related to the OSI model.


  1. What do you mean by VPN, and what is its usage? 

VPN is used for the virtual private network. In the most simple terms, we can call VPN a safe network connection method. But VPN is a complex concept when it comes to cybersecurity. The VPN helps in establishing network connections, which then create encrypted and safe connections with the intermediate telecommunication devices and the network. Using a VPN is a very constructive way to protect the data from getting stolen to buy any cyber-criminal. VPN is considered to be very beneficial for a lot of users as there are many uses of VPN. VPN is very beneficial when it comes to building up a business network when a person is traveling. This allows business professionals to access the networking portal even when the current location of the professional is continuously changing. When using a VPN, it does not provide any browsing activity to the network provider, which is used by the user. This makes the browsing activity of the user completely safe and secure.


  1. What do you mean by white hat hackers? 

As we associated hacking with cybercriminal activity when the cybercriminal gains access to the victim's device to steal all the sensitive data and information. But it's not just limited to Cybercrime only. White hat hackers are ethical hackers who have permission to hack a service network to check the security or stability of the network. These professionals have ethical standards that they have to follow while hacking a particular network. The requirement of white hat hackers is very high in an organization as they have a very crucial role in strengthening the networking system of the company. There are also known as the factors which conduct these activities to stand in the network with the use of ethical standards.


  1. Who are Black hat hackers? 

The term black hat hackers are referred professional to have amazing knowledge about how to breach network security. Black hat hackers are probably professional to do not fall under the category of ethical hackers as the primary function of these hackers is to damage the network. They have amazing knowledge about the generation of malware, which has the potential to affect the network. These hackers identify the weak loopholes in the network, which they used to steal all the sensitive data and information from the user's device for their own benefit. These hackers are extremely knowledgeable and know how to break a secure network without much of an issue.


  1. How can I use another reset to the password-protected BIOS configuration?

Resetting the BIOS password is very easy, and any user can usually do it. The first-ever which the user has to perform for changing the BIOS password is to remove the CMOS battery. When the user removes the CMOS battery, it is very easy for the user to actually change the BIOS password. The next train by which the user can change the BIOS password is by utilizing the software. The next way to change the BIOS password is bar utilizing a motherboard jumper. And the last way through which a BIOS password can be changed is by utilizing MS-DOS. These are the four primary methods to which a user can easily change the BIOS password configuration.


  1. What is Hacking? 

Criminal activities that are spread all around The World Are hacking. The reason why hacking is very common is that the number of hackers in the world is continuously increasing. The number of factors has rapidly increased in the last decade as organizations that use Information Technology sectors have also increased. Hacking is a technique in which a third party or unauthorized user gains complete access to a particular network. The hacker has the potential to intrude into the network and steal sensitive data and information from the victim's device. The hacker identifies the weak loopholes in the network. After identification of the loopholes, the hacker tries to connect the device. The hacker steals all the sensitive data information stored in the device and uses it for his own benefit. The biggest drawback of hacking is that the victim might have any idea that he is that information is constantly stolen.


  1. What are the different cyberattacks that can affect an organization?

The number of Cybercriminals in the world has rapidly increased. These online criminals have adapted Different cybercrime activities, which can damage an organization in different ways. The cybercriminal activities which can hamper the growth of the organization are malware attacks, phishing, password attacks, hacking, Rogue software, and a lot more.


These are the top 20 cybersecurity questions which are very important for a professional to understand. The set of questions is made after a lot of research about interview questions of different organizations in the field of cybersecurity. All the questions which come up in an interview are made to test the knowledge and skills the professional has in this field of work.


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Suggested Read:

Best Cyber Security Certifications in 2020

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About the Author

Sprintzeal   Nandini 

With over 3 years of experience in creating informative, authentic, and engaging content, Nandini is a technology content writer who is skilled in writing well-researched articles, blog posts, newsletters, and other forms of content. Her works are focused on the latest updates in E-learning, professional training and certification, and other important fields in the education domain.

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