10+ Fondever Interview Questions and Answers

I have 5 years of experience as a Linux System Administrator.

• 5 years of experience in managing Linux servers and systems

• Proficient in troubleshooting, maintenance, and security of Linux systems

• Experience with shell scripting, automation, and monitoring tools

• Certifications like RHCSA or LPIC demonstrate expertise

• Worked with distributions like CentOS, Ubuntu, and Red Hat

Apex latest version introduces new features like Lightning Web Components, Apex Recipes, and improved debugging capabilities.

• Lightning Web Components allow developers to build reusable components using modern web standards like JavaScript and HTML.

• Apex Recipes provide pre-built code snippets for common use cases, making development faster and easier.

• Improved debugging capabilities include enhanced error messages and better tools for troubleshooting code issues.

Performance issues in Oracle Apex can be handled by optimizing SQL queries, reducing network latency, and caching data.

• Optimize SQL queries by using indexes, reducing unnecessary joins, and avoiding full table scans.

• Reduce network latency by minimizing the number of round trips between the client and server.

• Cache data to reduce the need for repeated database queries and improve response times.

Immutability can be achieved by classes through using final keyword, returning new instances in methods, and using defensive copying.

• Use final keyword to make class variables immutable

• Return new instances in methods instead of modifying existing ones

• Use defensive copying to prevent modification of internal state

Server side condition is evaluated on the server before the page is sent to the client, while client side condition is evaluated on the client side after the page is received.

• Server side condition is processed on the server before the page is rendered to the client

• Client side condition is processed on the client's browser after the page is received

• Server side conditions are typically used for security and data validation

• Client side conditions are often used for user interface...read more

Authentication verifies the identity of a user, while authorization determines what actions they are allowed to perform.

• Authentication confirms the identity of a user through credentials like passwords or biometrics.

• Authorization determines the level of access a user has to resources or actions.

• Examples: Logging into a system with a username and password is authentication. Being able to view/edit specific files based on user roles is authorization.

Immutable classes other than String

• Integer

• Double

• Boolean

• LocalDate

Types of joins in SQL with examples

• Inner Join: Returns rows when there is a match in both tables

• Left Join: Returns all rows from the left table and the matched rows from the right table

• Right Join: Returns all rows from the right table and the matched rows from the left table

• Full Outer Join: Returns rows when there is a match in either table

• Cross Join: Returns the Cartesian product of the two tables

Closer functions are functions that have access to the parent scope even after the parent function has closed.

• Closer functions are nested functions within another function.

• They have access to variables and parameters of the parent function.

• They can access variables even after the parent function has finished executing.

Joins in SQL and Hive tables involve combining data from multiple tables based on a common column.

• Use JOIN keyword to combine tables based on a common column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id

Event Loop is a mechanism in programming that allows for asynchronous execution of code by continuously checking and processing events.

• Event Loop is commonly used in JavaScript to handle asynchronous operations.

• It allows for non-blocking I/O operations by delegating tasks to the operating system.

• Event Loop continuously checks the event queue for new events and processes them in a sequential manner.

• Example: In Node.js, the Event Loop allows for handling multiple concurrent con...read more