Top 35 Linux Networking Interview Questions With Answers 2023 PDF

The full form of LVM is Logical Volume Manager, which provides an advanced disk management approach in Linux. It is a subsystem that allows a user to efficiently allocate the disk space on the physical storage device. Once you run the above command, the system will start tracing the list command and show the system calls generated by it. Output from the above command includes information like call name, argument, and return values. It is called striping, which allows you to split the data into multiple disks without redundancy. Finally, mount the disk again through the mount command after the successful format.

Open the file with a text editor and modify the configuration to set a static IP address, subnet mask, gateway, and DNS servers. The crontab file in Linux is used to schedule recurring tasks or cron jobs. It contains a list of commands or scripts that are executed at specified time intervals. Network bonding is the process of creating a single network by combining two or more network interfaces. This combination of networks improves redundancy and performance by increasing bandwidth and throughput. The major benefit of network bonding is that the overall network works fine even if a single network in the bonding does not work properly.

What steps can I take to improve the security of my Linux network?

The time is dependent on the size of the journal which only takes a second which depends on the speed of the hardware. To improve the security of the password file, instead of using a compatible format we can use shadow password format. So, in shadow password format, the password linux network engineer will be stored as single “x” character which is not the same file (/etc/passwd). This information is stored in another file instead with a file name /etc/shadow. So, to enhance the security, the file is made word readable and also, this file is readable only by the root user.

Intrusion Detection Systems (IDS) scan and filter traffic for signals that attackers are attempting to penetrate or steal data from your network using a recognized cyber threat. IDS systems detect a variety of activities such as security policy violations, malware, and port scanners by comparing current network activity to a known threat database. Here we have some popular questions for a technical-level Linux interview that you can expect to be asked in the Linux interview.

What is /etc/resolv.conf file

You should also mention any tools or programs you used to help create and manage the security policies. Finally, make sure to explain how your work has helped protect the company’s data and systems from malicious attacks. The best way to answer this question is to explain the different types of cyber attacks, such as denial-of-service (DoS) attacks, phishing scams, and malware.

• So, here are few Linux questions that can help you with the Linux interview preparation.
• Rkhunter can be installed from the software repository by following the instructions of your distribution’s package management.
• Similar to the du command, the ncdu command also requires the path of the specific directory to check its space.
• It also provides the major requirements that candidates for the network security engineer role are usually asked to satisfy to be qualified for hiring.
• Finally, emphasize your ability to collaborate with other engineers and work in a team environment.
• These questions contain basic and advanced approaches of the field that you must learn before any interview.

Finally, mention any experience you have with developing or deploying security policies or procedures. The interviewer is asking this question to gauge the network security engineer’s understanding of how to protect a business’s network. It is important for businesses to protect their networks because if they are breached, sensitive data could be compromised and used to exploit the business or its customers. A network security engineer should be able to identify the most important steps for businesses to take in order to protect their networks. These steps may include implementing firewalls, encrypting data, and creating strong passwords.

Q: Define the salting process and what it’s used for.

Network security engineers are responsible for protecting an organization’s data and systems from malicious attacks. This means that they must have an in-depth knowledge of encryption protocols and the ability to implement them. By asking this question, the interviewer can assess the candidate’s knowledge of encryption protocols and gauge their ability to implement them in a secure network environment.

It determines which users are allowed to run commands with superuser (root) privileges. To configure sudo access, you can edit the sudoers file using the visudo command. /proc (Proc File System) is the virtual file system that shows information about the system and the Kernel data structures.