CBSI Interview Questions and Answers

yum is a package manager for Linux that automates software installation, updates, and removal.

• yum stands for Yellowdog Updater Modified

• It is used to manage packages and dependencies in Red Hat-based Linux distributions

• It can be used to install, update, and remove software packages

• It automatically resolves dependencies and downloads necessary packages

• Examples of yum commands include 'yum install', 'yum update', and 'yum remove'

Apache server is a web server software used to serve web pages and applications.

• Apache server is open-source software

• It is used to host websites and web applications

• It supports multiple programming languages like PHP, Python, and Perl

• It can be configured to handle SSL/TLS encryption for secure connections

• Apache server is highly customizable and extensible with modules

• Examples of websites using Apache server include Airbnb, Apple, and IBM

DHCP stands for Dynamic Host Configuration Protocol. It is a network protocol that automatically assigns IP addresses to devices.

• DHCP is used to simplify network administration by automating the IP address assignment process.

• It allows devices to obtain IP addresses and other network configuration information from a DHCP server.

• DHCP leases IP addresses for a limited time period, after which the device must renew the lease or obtain a new IP address.

• DHCP can also be used to ass...read more

NFS stands for Network File System, a distributed file system protocol allowing a user on a client computer to access files over a network.

• NFS allows a user to access files on a remote server as if they were on their local machine.

• It is commonly used in Unix and Linux environments.

• NFS uses RPC (Remote Procedure Call) to communicate between the client and server.

• It supports both TCP and UDP protocols.

• NFS can be used for sharing files between servers as well.

• NFSv4 includes secu...read more

Abstract interface is used to define a set of methods without implementation. Difference lies in their usage.

• Abstract interface is used to define a contract between two parties.

• It is used to provide a common set of methods that can be implemented by different classes.

• It is used to achieve abstraction and loose coupling.

• Abstract classes can have implementation while interfaces cannot.

• Abstract classes can have constructors while interfaces cannot.

• Example: Comparable interface i...read more

CPU scheduling is the process of allocating CPU time to processes in a way that maximizes system performance.

• CPU scheduling is an important part of operating systems.

• It involves deciding which process gets to use the CPU at any given time.

• There are several scheduling algorithms, such as First-Come-First-Serve, Round Robin, and Priority Scheduling.

• The goal is to maximize system performance by minimizing wait times and maximizing throughput.

• CPU scheduling is a complex topic tha...read more

Multithreading is the ability of a CPU to execute multiple threads concurrently.

• Multithreading allows for parallel processing and can improve performance.

• Threads share the same memory space and can communicate with each other.

• Examples include web servers handling multiple requests simultaneously and video games rendering graphics while processing user input.