10+ IT Engineer Interview Questions and Answers for Freshers

Auto scaler in AWS automatically adjusts the number of EC2 instances in a group based on traffic or performance metrics.

• Auto scaler helps in maintaining optimal performance and cost efficiency by scaling EC2 instances up or down as needed.

• Horizontal scaling adds more instances to the existing pool, while vertical scaling increases the size of existing instances.

• Horizontal scaling is generally more preferable as it provides better fault tolerance and scalability compared to ve...read more

Commands used in Dockerfile are instructions that define how an image should be built.

• FROM: specifies the base image

• RUN: executes commands in a new layer on top of the current image

• COPY: copies files from the host machine to the image

• CMD: specifies the default command to run when a container is started

• EXPOSE: exposes ports from the container to the host machine

• WORKDIR: sets the working directory for any RUN, CMD, ENTRYPOINT, COPY, and ADD instructions

• ENV: sets environment var...read more

Data can be maintained using various software such as MS Office, Tally, ERP, and CRM.

• Identify the type of data to be maintained

• Choose the appropriate software for the specific data

• Ensure regular backups are taken to prevent data loss

• Implement security measures to protect sensitive data

• Train employees on how to use the software effectively

Cloud computing is the delivery of computing services over the internet.

• Cloud computing allows users to access and use computing resources on-demand.

• Types of cloud computing include public, private, and hybrid clouds.

• Public clouds are owned and operated by third-party providers, like Amazon Web Services (AWS) or Microsoft Azure.

• Private clouds are dedicated to a single organization and can be located on-premises or hosted by a third-party provider.

• Hybrid clouds combine public ...read more

Dynamic refers to something that is constantly changing or updating, while statistics involves collecting, analyzing, and interpreting data.

• Dynamic refers to elements that can change or be updated in real-time, such as dynamic websites or dynamic programming languages like JavaScript.

• Statistics involves collecting, organizing, analyzing, and interpreting data to make informed decisions or predictions, such as in surveys, experiments, or research studies.

BIOS stands for Basic Input/Output System. It is a firmware used to perform hardware initialization during the booting process.

• BIOS is a program stored on a chip on the computer's motherboard.

• It is responsible for initializing and testing hardware components during the boot process.

• BIOS provides the basic instructions that allow the operating system to communicate with the hardware.

• It also contains settings for configuring hardware parameters, such as boot order and system ti...read more

C is a high-level programming language used for system programming and embedded systems. Python is a high-level interpreted language.

• C is used for developing operating systems, device drivers, and other system software.

• Python is used for web development, data analysis, artificial intelligence, and scientific computing.

• C is a compiled language while Python is an interpreted language.

• C++ is an object-oriented extension of C.

Jenkins is an open-source automation server used for continuous integration and continuous delivery of software projects.

• Jenkins helps automate the building, testing, and deployment of software projects.

• It integrates with various version control systems like Git, SVN, etc.

• Jenkins allows for the creation of pipelines to automate the software delivery process.

• It provides a web-based dashboard for easy monitoring and management of jobs.

• Plugins can be added to Jenkins to extend i...read more

Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications.

• Kubernetes helps in automating the deployment, scaling, and management of containerized applications.

• It allows for easy scaling of applications by adding or removing containers based on demand.

• Kubernetes provides features like load balancing, self-healing, and rolling updates for applications.

• It simplifies the process of managing c...read more

List is mutable in Python

• Lists in Python are mutable, meaning they can be changed after creation

• Elements can be added, removed, or modified in a list

• Example: list1 = [1, 2, 3], list1[0] = 4 will change the first element to 4