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

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

Migrating NAS resources involves planning, testing, and executing the migration process.

• Identify the data to be migrated and the target storage system

• Plan the migration process, including downtime and data transfer methods

• Test the migration process in a non-production environment

• Execute the migration process, monitor progress, and verify data integrity

• Update any necessary configurations and test the new storage sy...read more

Cyber attacks can be classified into various types based on their methods and targets.

• Malware attacks (e.g. viruses, worms, trojans)

• Phishing attacks (e.g. social engineering, email scams)

• Denial of Service (DoS) attacks

• Man-in-the-middle (MitM) attacks

• SQL injection attacks

• Cross-site scripting (XSS) attacks

• Advanced Persistent Threats (APTs)

• Ransomware attacks

• Cryptojacking attacks

• IoT-based attacks

• Password attacks (e.g....read more

Dependency injection is a design pattern used to remove hard-coded dependencies and make components more modular and testable.

• Constructor injection: Dependencies are provided through a class's constructor.

• Setter injection: Dependencies are set through setter methods.

• Interface injection: Dependencies are injected through an interface.

• Spring framework in Java uses dependency injection to manage components.

• Angular fr...read more