Jio Softwaretest Engineer Interview Questions and Answers

Software testing

Q1. How the Amazon category load so fast
Ans. 
Amazon category loads fast due to optimized server infrastructure, efficient caching mechanisms, and streamlined code.
• Optimized server infrastructure with high-performance servers and load balancers

• Efficient caching mechanisms to store frequently accessed data and reduce load times

• Streamlined code with minimal dependencies and optimized algorithms

• Content delivery networks (CDNs) to serve static content quickly to users
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Q2. How does images load so fast on Amazon.
Ans. 
Amazon uses a content delivery network (CDN) to cache images closer to users, reducing load times.
• Amazon uses a global network of servers to cache images closer to users, reducing latency.

• They utilize a content delivery network (CDN) to distribute images across multiple servers worldwide.

• Amazon optimizes images for web delivery by compressing them without losing quality.

• They may also use lazy loading techniques to prio
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Q3. Design a cache in Java
Ans. 
Design a cache in Java
• Use a HashMap to store key-value pairs

• Implement a mechanism to limit the size of the cache and remove least recently used items

• Consider using a doubly linked list to keep track of the order of items in the cache
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Maths, Reasoning, GK, English - Basic knowledge test will be there at the time of interview

Current topics will be given for GD

Q1. Go with flow, be what you are in real Do show your passion for working
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Q2. Future plans can be asked
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Q1. How to handle exception?
Ans. 
Handle exceptions by using try-catch blocks to gracefully manage errors in code execution.
• Use try-catch blocks to catch exceptions and handle them appropriately.

• Throw custom exceptions when necessary to provide more specific error information.

• Use finally block to execute code that should always run, regardless of whether an exception is thrown.

• Avoid catching generic exceptions like Exception class, instead catch specif...read more
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Q2. What is inheritance?
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class inherits properties and behaviors of the base class

• Supports the 'is-a' relationship, where a derived class is a specialized version of the base class
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