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RSA Security Interview Questions and Answers

Updated 2 Jul 2024

Q1. diff between GCD and Queue in depth

Ans.

GCD is a low-level API for managing concurrent operations, while Queue is a high-level API for managing tasks in a FIFO order.

  • GCD stands for Grand Central Dispatch and is a low-level API for managing concurrent operations in iOS and macOS.

  • Queues are a high-level API in GCD used for managing tasks in a FIFO (First In, First Out) order.

  • GCD allows you to create and manage queues, while queues are used to execute tasks concurrently or serially.

  • GCD provides a way to manage threads...read more

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Q2. what is static ? what is depency injection ? Give me 4 annotation in spring @Autowire how to use it

Ans.

Static keyword is used in Java to create class-level variables and methods. Dependency injection is a design pattern used to inject dependencies into a class. @Autowired is a Spring annotation used for automatic dependency injection.

  • Static keyword is used to create variables and methods that belong to the class itself, rather than to instances of the class.

  • Dependency injection is a design pattern where the dependencies of a class are provided from the outside, rather than cre...read more

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Q3. Simple core Java and program to find the least produce able number in a given int array

Ans.

Program to find the least producible number in a given int array using core Java

  • Iterate through the array and check if any two numbers can be multiplied to get a number in the array

  • If not, return the smallest number in the array

  • Handle edge cases such as negative numbers and zero

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Q4. How money hours duty security guard

Ans.

The number of hours a security guard works depends on the specific job requirements and shifts.

  • Hours can vary from part-time positions with a few hours per week to full-time positions with 40+ hours per week.

  • Some security guards work night shifts, weekends, or holidays, which may require longer hours.

  • Overtime may be available depending on the employer and job responsibilities.

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Q5. Code snippets for predicting output and compilation errors and explain the reason of errors

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Q6. How Datafeed works

Ans.

Datafeed is a mechanism for transferring data from one system to another in real-time or near real-time.

  • Datafeed is used to transmit data from a source to a destination system.

  • It can be used for various purposes such as syncing data between systems, updating databases, or triggering actions based on incoming data.

  • Datafeed can be implemented using APIs, webhooks, messaging queues, or other communication protocols.

  • Examples of datafeeds include RSS feeds for news updates, webhoo...read more

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