Systems Plus Interview Questions and Answers

I have used a variety of tools in my previous organization to support BI production.

• ETL tools like Informatica and Talend

• Monitoring tools like Splunk and Nagios

• Ticketing tools like JIRA and ServiceNow

Event loop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking way.

• Event loop is responsible for handling asynchronous operations in JavaScript.

• It continuously checks the call stack and the callback queue to see if there are any tasks to be executed.

• Tasks from the callback queue are moved to the call stack for execution when the call stack is empty.

• Event loop ensur...read more

React Hooks are functions that let you use state and other React features without writing a class.

• React Hooks were introduced in React 16.8.

• They allow you to use state and other React features in functional components.

• Some commonly used React Hooks are useState, useEffect, useContext, etc.

• Hooks are more readable and easier to maintain compared to class components.

Production support involves maintaining and troubleshooting software applications in a live environment.

• Monitoring application performance and availability

• Resolving technical issues and bugs reported by users

• Implementing hotfixes and patches to address critical issues

• Performing regular maintenance tasks to ensure system stability

• Providing technical support to end users

Performing a test activity on a remote site

• Ensure proper communication channels are established

• Define clear objectives and scope of the test

• Select appropriate tools and equipment for the test

• Conduct a pre-test site survey to identify potential issues

• Execute the test plan and document results

• Analyze the results and report findings to stakeholders

SIEM tools are security information and event management tools used to collect, analyze and correlate security events.

• SIEM tools help in detecting and responding to security incidents

• They collect data from various sources like firewalls, IDS/IPS, and endpoints

• SIEM tools use correlation rules to identify potential security threats

• Examples of SIEM tools include Splunk, IBM QRadar, and ArcSight