200 Most Important Questions for IT Security Jobs

200 Most Important Questions for IT Security Jobs

Hey guys, this is the first blog of our collection of “200Most Important Questions for IT Security Jobs” along with answers.

If you want to check your knowledge first, you can go to this collection’s GitHub repo and get an idea of how much you are prepared for IT Security jobs.

github.com/dheerajydv19/200-IT-Security-Job..

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General IT Security Administration

Q1. What is information security and how is it achieved? Ans. Information security, also known as InfoSec, means securing information from unauthorized access. It refers to the tools and processes used to secure any kind of information(whether sensitive business information or database of the users on a website or anything else) from disclosure, disruption, modification, inspection, recording, or destruction of information. Some people confuse it with cybersecurity but it refers exclusively to the processes designed for data security, while Cybersecurity is a more general term that includes InfoSec.

In simple terms, Information security is all about achieving the three objectives that are confidentiality, integrity, and availability i.e the CIA triad.

For a more detailed answer, click here.

Q2. What are the core principles of information security? Ans. In simple terms, Information security is all about achieving the three objectives that are confidentiality, integrity, and availability i.e the CIA triad.

Here, Confidentiality means information is disclosed only to some selective individuals, enterprises and organizations mean only to the authorized ones.

Integrity means ensuring that the data is accurate and reliable, and is not modified either intentionally or unintentionally.

Availability means data is accessible to the people who are authorized to access it whenever they need it.

For a more detailed answer, click here.

Q3. What is non-repudiation (as it applies to IT security)? Ans. In a general information security context, assurance that the sender of information is provided with proof of delivery, and the recipient is provided with proof of the sender’s identity, so neither can later deny having processed the information. It is a legal concept that is widely used in information security and refers to a service, which provides proof of the origin of data and integrity of the data.

It is widely used in Data Audit logs, online transactions, digital contracts and emails, and in business-to-business transactions.

For a more detailed answer, click here.

Q4. What is the relationship between information security and data availability? Ans. An easy way to understand the relationship between information security and data availability is through cybersecurity. Beyond protecting your data confidentiality, cybersecurity ensures the availability and integrity of your data, as well.

Even though data availability is an overlooked area, its importance cannot be undermined. Availability of data will ensure that your systems keep working and can be accessed at the correct time. For instance, let’s assume that you are releasing a highly hyped product and your website crashes on the day of the product launch. Here, you might be at the risk of hampering your business’s reputation and upsetting your customers.

For a more detailed answer, Click here.

Q5. What is a security policy and why do we need one? Ans. A security policy (also called an information security policy or IT security policy) is a document that spells out the rules, expectations, and overall approach that an organization uses to maintain the confidentiality, integrity, and availability of its data. Security policies exist at many different levels, from high-level constructs that describe an enterprise’s general security goals and principles to documents addressing specific issues, such as remote access or Wi-Fi use.

We need security policies because they protect our organization's assets, both physical and digital. They identify all company assets and all threats to those assets.

Physical security policies are aimed at protecting a company’s physical assets, such as buildings and equipment, including computers and other IT equipment. Data security policies protect intellectual property from costly events, like data breaches and data leaks.

For a more detailed answer, Click here.

Q6. What is the difference between logical and physical security? Can you give an example of both? Ans. Logical security protects computer software by discouraging user excess by implementing user identifications, passwords, authentication, biometrics, and smart cards. Physical security prevents and discourages attackers from entering a building by installing fences, alarms, cameras, security guards and dogs, electronic access control, intrusion detection, and administration access controls. The difference between logical security and physical security is logical security protects access to computer systems and physical security protects the site and everything located within the site.

For a more detailed answer, Click here.

Q7. What’s an acceptable level of risk? Ans. The level of risk that is tolerable in a given situation. It is determined from an analysis of threats and vulnerabilities, the sensitivity of data and applications, a cost/benefit analysis, and a study of the technical and operational feasibility of available controls.

Q8. What are the most common types of attacks that threaten enterprise data security? Ans. The most common types of attacks that threaten enterprise data security are accidental exposure, phishing, other social engineering attacks, insider threats, ransomware, data loss on the cloud, and SQL injection.

For a more detailed answer, Click here.

Q9. What is the difference between a threat and a vulnerability? Ans. Threats have the potential to steal or damage data, disrupt business, or create harm in general. To keep that from happening, you need to know what cyber threats exist.

Threats could be of three types, which are as follows:

Intentional- Malware, phishing, and accessing someone’s account illegally, etc. are examples of intentional threats. Unintentional- Unintentional threats are considered human errors, for example, forgetting to update the firewall or the anti-virus could make the system more vulnerable. Natural- Natural disasters can also damage the data, they are known as natural threats. Vulnerability refers to a weakness in your hardware, software, or procedures. It’s a gap through which a bad actor can gain access to your assets. In other words, threats exploit vulnerabilities.

For a more detailed answer, Click here.

Q10. Can you give me an example of common security vulnerabilities? Ans. Broken Authentication

Problems that might occur during broken authentication don’t necessarily stem from the same root cause. Rolling your own authentication code is not recommended, as it is hard to get right. There are myriad possible pitfalls, and here are a few:

The URL might contain the session ID and leak it in the referer header. Passwords might not be encrypted in storage and/or transit. Session IDs might be predictable, making it a little too easy to gain unauthorized access. Session fixation might be possible. Session hijacking could occur if timeouts are not implemented correctly, or if using HTTP (no SSL security), etc. For a more detailed answer, Click here.

Note — Always try to answer these questions wisely as these are the ones that create a good impact in the mind of the interviewer as answers to these types of questions varies person to person.

So, here we end the first part of this collection. The next part will be published soon.

You can always see the full collection along with answers once it is completed at the below GitHub repo link.

github.com/dheerajydv19/200-IT-Security-Job..

You can follow me for reading my writeups on topics related to ethical hacking and cybersecurity and a few topics on technology and to knowing my tips and tricks which I use to save my time and for better results.

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