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30 Questions to Ask Before Hiring a Network Security Expert

Cyber ​​Security Is One Of The Most Important Areas Of Information Technology That Always Creates A Good Job Market For Experts Familiar With Information Security Topics. The More Demand There Is, The More Competition There Is. 

Therefore, to get a job in cybersecurity, people must have a wide range of practical skills. While having the skills needed to get a career in cybersecurity is essential, one of the main parts of the story is the success of the job interview.

To be more precise, if you have the highest qualifications in this field but do not appear in a successful job interview, you will fail. Accordingly, in this article, we have compiled a list of the top cyber security job position answers and questions.

These questions give job seekers a clear view of the sample questions they may encounter in job interviews.

In addition, it helps human resource managers ask purposeful questions that are relevant to the job title of an information security expert. Let’s go to the questions and answers without margins.

1. What is cryptography?

2. What is the difference between asymmetric and asymmetric encryption?

جدول In the table below, you can see the difference between these two patterns.

3. What is the difference between IDS and IPS?

4. Explain Confidentiality, Integrity, and Availability.

Confidentiality, integrity, and accessibility are the three main pillars of the security world on which information security policies are designed. Today, most organizations’ security models and doctrines are designed based on these principles.

5. What is a firewall, and why is it used?

6. What is the difference between Vulnerability Assessment and Penetration Testing?

Vulnerability is finding a flaw in the target system or network. Here, the organization knows that the system/network has problems or weaknesses and wants to find and fix these problems.

Intrusion testing finds vulnerabilities (Vulnerabilities) in the target system or network. In this case, the organization wants to know if the security measures and solutions it has implemented to deal with cyber threats are correctly set up and if there is a way to hack the system/network out of its security experts?

7. What is a three-step achievement?

3 ‐ Way Handshake is a method used in TCP / IP-based networks to establish a connection between the host and the client. This communication mechanism is called three-step output because it is done in three steps as follows:

8. What response codes might receive from a web application?

Typically, you may receive the following answers when you plan to connect to a website or web application:

Now let’s look at more specialized network-related security questions:

9. What is traceroute, and why is it used?

10. What is the difference between HIDS and NIDS?

Host IDS HIDS and Network IDS Network NIDS are intrusion detection systems and have the same functionality. The only difference is that HIDS is configured on a specific host/device and controls the traffic of a particular machine and suspicious activities on the system. In contrast, NIDS operates on a network and controls the traffic of all network devices.

11. What are the steps for setting up network firewalls?

In general, security and networking experts perform the following steps:

 13. Explain SSL encryption

Secure Sockets Layer (SSL) is a standard security technology that creates encrypted connections between the web server and the browser. The above approach protects the confidential data and information exchanged in online transactions. The steps for building an SSL connection are as follows:

14. What should be done to secure the server?

Secure servers use the Secure Sockets Layer (SSL) protocol to encrypt and decrypt data and protect data against unauthorized eavesdropping. There are several ways to secure servers as follows:

15. Explain data leakage

Data leakage is the intentional or unintentional transfer of data from within an organization to an unauthorized external destination. Disclosure of confidential information is not allowed in all countries, and the individual or organization faces many legal problems. Data leakage can be divided into the following three categories based on the occurrence model:

Data leakage can prevent by using tools, software, and strategies known as DLPs called Data Leakage Prevention.

16. Name some common cyber attacks

17. What is a Brute Force attack, and how can you prevent it?

An all-inclusive search attack refers to repeated attempts and possible combinations to discover passwords or credentials. In most cases, pervasive search attacks occur when the software or web forms allow users to log in with authentication. There are several ways to prevent pervasive search attacks, some of which are as follows:

18. What is a port scan?

Port scanning is a technique used to identify open ports and services in the host. Hackers use port scans to find information that is useful for exploiting vulnerabilities. However, network administrators also use the port scanning mechanism to verify network security policies. Standard port scanning techniques include the following:

19. Name the different layers of the OSI model

OSI is a reference model that defines how applications and services on a network communicate. The model is formulated as a general guide so that vendors and developers active in hardware and software under the web have a clear view of the communication mechanisms. Figure 1 shows the layers of the OSI model. The function of each of these layers is as follows:

figure 1

20. How much do you know about risk, vulnerability, and threats in the network?

A brief explanation of each of the above concepts is as follows:

21. How can identity theft be prevented?

In general, several steps can take to prevent identity theft. These actions are as follows:

22. What are the differences between black, white, and gray hat hackers?

23. How often should we do Patch Management?

24. How to reset password-protected BIOS configuration?

25. Explain the MITM attack and how to prevent it

26. Explain the DDOS attack and how to prevent it

One of the constant questions is about job interviews. Distributed Denial of Service (DDoS) Denial of Service is a cyber attack that prevents servers from serving users. DDOS attacks can be classified into two groups:

The following strategies can use to counter DDoS attacks:

27. Explain the XSS attack and how to prevent it

XSS Cross-Site Scripting is a cyber attack that enables hackers to inject malicious client-side scripts into web pages. XSS can hijack meetings, steal cookies, change DOMs, execute remote code, corrupt servers, etc. The following solutions should use to deal with the above attacks:

28. What is ARP, and how does it work?

29. What is port blocking in LAN?

30. What is Button?

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