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Although HTTPS has certain encryption capabilities, they are typically judged insufficient, and additional encryption methods are preferred whenever practical. Clients and servers collaborate as different logical entities to complete a network task. A hub and a switch are both networking devices that help you connect to various devices. The hub is the layer 1 device, i.e., it works at the physical layer and sends the signal to the port. Meanwhile, the switch is a layer 2 device that routes and transmits information over a network.

System logs can be checked using the ‘tail’ or ‘less’ command to view the contents of log files located in the ‘/var/log’ directory, such as ‘syslog’, ‘messages’, or ‘auth.log’. 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. Runlevels in Linux define different system states, such as single-user mode or multi-user mode with or without a GUI. They determine which services start or stop during system startup and shutdown.

What is the difference between absolute and relative paths in Linux?

Here we have a comprehensive list of Linux interview questions and answers that are useful for admin level. So, here are few Linux questions that can help you with the Linux interview preparation. The questions based on INODE is the most common linux interview question you may come across in your linux interview. So, read well and get enough knowledge even if you are not familiar with it and get ready with the answer.

linux questions and answers for network security engineer

To terminate a process, the ‘kill’ command followed by the process ID (PID) can be used. The ‘systemctl start ’ command is used to start a service, and ‘systemctl stop ’ is used to stop a service in Linux. The ‘ifconfig’ or ‘ip addr show’ command can be used to display the IP address of a Linux system. The root directory is denoted by “/”, and files are organized in directories or folders within the root directory. We can copy a file to multiple directories in Linux by these methods and command xargs, find, tee and shell loop. In Linux we can use the `cat` command to view the content of a file without opening it in an editor form.

How do you optimize Linux system performance?

To answer this question, you should be prepared to discuss your experience with different network security protocols and technologies. Explain which ones you’ve used in the past, how they function, and any successes or challenges you faced while using them. You can also talk about your experience with learning new protocols and technologies, as well as any certifications or training you have related to these topics.

  • Network security engineers are responsible for keeping networks safe from external and internal threats.
  • This command will show you all of the network interfaces that are currently active on your system as well as their IP addresses.
  • Here are the top command-based interview questions and answers that are asked in a Linux interview.
  • Disable unnecessary services during boot using ‘systemctl,’ identify problematic startup processes, and verify hardware integrity.

Knowing how to navigate the command line is a critical skill for Linux engineers, and your answer to this question will determine whether or not you’re the right fit for the job. Network security is a very technical field and it is important to make sure that potential employees are aware of the specific challenges that come with the job. By asking this question, the interviewer can get an idea of how the candidate deals with complex security issues and determines how they can use their skills to solve the problem. Linux is an open-source operating system that is considered faster and more efficient than other operating systems like Windows. Here, we give a range of technical and behavioral questions about Linux—so you can prepare for the interview all in one place.

How can DevOps tools help in automating the deployment of Linux servers?

It creates two links (virtual circuits) between the hosts, one for informational control and the other for data transport. Routing chooses the traffic path across multiple networks, between two networks or within linux network engineer a network. Different types of networks, such as computer networks and circuit-switching networks, support routing. Routing entails making decisions to direct data packets from the source to the destination.

  • A firewall is a network security device that monitors and controls incoming and outgoing network traffic.
  • However, it does not scale effectively for applications like the Internet.
  • Both TLS and SSL rely on underlying public-key infrastructure (PKI) and certificates to facilitate the encrypted sessions.

By asking this question, the interviewer is looking to see if you are up to date on the latest technology and tools used in the field. A Linux network administrator is responsible for managing and maintaining the network infrastructure of a Linux-based system. They are responsible for configuring and managing network services, monitoring network performance, troubleshooting network issues, and ensuring network security. The VPN also improved the overall security posture of the organization, ensuring that sensitive data and information remained confidential and well-protected. During my time at Company X, I was tasked with setting up a VPN to connect remote employees and branch offices to the company network. When setting up a security protocol, it is crucial to balance practicality with security.

Free Practice Test Questions

In the event of a failure or crash, my first step is to identify the root cause of the issue by checking system logs, monitoring tools, and analyzing performance metrics. Once I have determined the root cause, I work quickly to resolve the issue. I successfully configured https://remotemode.net/ a cluster of servers using Pacemaker and Corosync to ensure that the application remains highly available in case of any server failure. As a result, the application’s uptime significantly increased, and the business achieved a new level of operational efficiency.