Viasat Softwaretest Engineer Interview Questions and Answers

Software testing

Q1. Tell about Yourself
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Q2. Tell about your project
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Q3. And Other Work Related Questions
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Asked basic Web Development related questions

Q1. Questions on Data structures
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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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Mcq based on language

Q1. Do you know STL. Find loop in linked list.
Ans. 
STL knowledge and finding loop in linked list
• STL (Standard Template Library) is a C++ library that provides containers, algorithms, and iterators.

• To find a loop in a linked list, we can use Floyd's cycle-finding algorithm.

• In this algorithm, we use two pointers, one moving at a slower pace and the other at a faster pace.

• If there is a loop in the linked list, the faster pointer will eventually catch up to the slower poin...read more
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