Linux is a type of open-source OS. OS stands for Operating System. Let’s have a detailed explanation of Linux Interview Questions and answers. The operating system defines the particular software which helps in the direct management of hardware as well as the resources of the system. The operating system has its position between the hardware and applications.
It makes a connection between the complete software and physical resource responsible for performing the work. OS can be seen as a car engine that does not need any support to run, but it becomes meaningful when associated with an operating car. It acts as the core factor which binds all the other elements, and without its help, no work can be done.
Linux Interview Questions Part 1- Working of the Linux
Initially, Linux was designed to work the same way as UNIX, but the operating system evolved with time and is compatible with a wide range of hardware from supercomputers to smartphones. Linux kernel is present in every OS based on Linux. This Linux kernel is useful in managing the hardware resources and several software packages constituting the remaining part of the operating system.
There are a few core components common to the operating system, like GNU tools. These particular tools are of great benefit to the user in managing the resources rendered by the kernel. The tools also help the users to install other software as well as configure different security settings and performance. These tools also play a few more functions other than the above-mentioned ones. Together, these tools form a functional and complete operating system. The different combinations of various software in Linux distributions can vary as the operating system is open source.
The different pieces of the Linux operating system are:
- Boot loader – Boot loader is the software behind the management of the boot process of a certain computer. It normally comes as a pop-up on the screen and then goes back to boot in the operating system for many users.
- Kernel – The kernel is a piece of the complete system known as Linux. It manages the memory, peripheral devices, and central processing unit of the system. The kernel works as the core part of the system. It represents the lowest step of the operating system.
- Init system – The init system is a sub-system and helps in bootstrapping the userspace. It is in charge of controlling the daemons. System D is one of the widely known init systems. The init system manages the boot process after initial booting is done by the bootloader. The bootloader is otherwise called Grand Unified Bootloader or the GRUB.
- Daemons – The daemons refer to the background service that starts during the boot or after the user logs in to the system. The background services include printing, scheduling, and other system facilities.
- Graphical server – The sub-system behind displaying graphics on the desktopscreen is the graphical server. The x server is the common name used to denote the graphical server.
- Desktop environment – The desktop environment is the part of the system that the user interacts with. Many desktop environments are available for the user to choose from. The desktop environment consists of built-in applications like file manager and another desktop program.
- Applications – The full array of applications is not offered by desktop environments. Linux offers its clients much high-quality software which can be installed quite easily. The modern distributions of Linux have tools like app stores which help in centralization and simplification of the installation process.
Linux Interview Questions and Answers Part 2: Reasons to choose Linux.
Many people have doubts about choosing the Linux operating system over others. The question comes as to why to choose a computing environment that is completely different while the other operating systems available work pretty well.
To answer this question, another question can arise that is the prior operating system good enough to fight the virus, malware threats, and various system crashes. Linux operating system is the best platform to fight these hindrances.
Linux defined its place as the most reliable and versatile computer ecosystem that can help the users in many ways. It gives many opportunities for individuals to create the best experience with an amazing computer environment.
Linux comes as the best solution for almost all desktop or computer problems. It provides reliability as well as zero entry cost. Any user can install Linux in their computer system without having to pay a single penny. Software programming or server licensing does not cost anything to the user.
We can compare the server cost of Linux with Windows 2016. The price of a Windows 2016 server is $882.00 for the standard edition. The above-mentioned cost does not take into account the Client Access License and other necessary software licenses.
But the Linux server is free and very easy in terms of installation. This zero-cost facility wins over many customers. The operating system provides great benefits to the user in terms of cost as well as performance.
People using Linux also give great positive comments now and then. According to them, they have never faced any sort of problems relating to ransomware or other viruses. The operating system is not very vulnerable to virus and malware attacks.
In case the kernel is updated, a server reboot becomes necessary. It is normal for the Linux server to be fine without multiple reboots within less period. Stability and dependence of the operating system are maintained practically if the updates are done when recommended.
Open source feature- Linux
The open-source license is the governing agent for Linux distribution. The key features of an open-source are as follows:
- There is freedom in case of running the program let it be for any need.
- There is also freedom for studying the working of the program, and necessary changes can be done according to individual wishes.
- The user also gets to help the neighbors by redistributing the copies.
- The user can even distribute the modified version to others by making copies of it.
- It is very important for every person who works with the Linux platform to understand the above-mentioned points for their benefit. Linux is so far the best operating system as informed by the users.
- The freedom that Linux gives as an open-source operating system is one of the major reasons why most people prefer Linux over another operating system. It gives them freedom of choice as well as use.
Installation of Linux
Few people think that the installation of the operating is system is a very difficult task. But Linux helps the people in this situation by providing an easy installation facility. Almost all Linux versions have live distribution. Live distribution help in running the operating system with the help of both CD or DVD and USB flash drive.
This helps the user to carry on the work without having to change anything in the hard drive. There is complete functionality available at the time of installation. The process of installation is pretty simple, and the instructions flash at the time of practical use.
There is the presence of an installation wizard which helps the user to get through the complete process in a step by step manner.
The first step involves preparation. In this step, the machine meets the installation requirements of the Linux operating system.
Then the process of wireless setup follows where the connection of network takes place to manage and download various updates. The next step involves hard drive allocation, where the installation of the Linux operating system takes place along with a different operating system. This process denotes the dual booting of the system.
Then in the next step location is set in the map, and the user decides the keyboard layout. The final step is setting up a username and creating a password for the system.
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