CommScope Senior Software Engineer Interview Questions and Answers

Q1. Find nth elements from last in linked list
Ans. 
Use two pointers to find the nth element from the end of a linked list.
• Use two pointers, one moving n steps ahead of the other

• When the first pointer reaches the end, the second pointer will be at the nth element from the end
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Q2. Difference between hashmap and concurrent hashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe and allows concurrent access.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if accessed by multiple threads simultaneously.

• ConcurrentHashMap allows concurrent access by multiple threads without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple th...read more
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Q1. Technical Interview + Coding
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Q1. Technical Interview
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The coding test was for 90 mins, and comprised of questions from topics such as DP and hashtables. It was taken on hackerrank platform

Q1. One question related to hashing (particularly about hashcode and equals method)
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Q2. A variation of number of connected islands from graph
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Q1. Thread synchronisation, print alternate numbers using 5 different threads
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Q2. C++ Related questions were asked, in which I was asked about how can I find the size of Object, difference between malloc and calloc. What are semaphores and how are they used
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Q1. It was completely on the project worked on using the spring boot. 1)how to handle if the applciation is restarting continuously 2)how to load multiple applccation property file in sequential way 3)how to h...read more
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Q1. Project related questions
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Q1. Technical Questions relevant to your domain and your previous experience.
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Q1. This Round is with your manager and Questions relevant to behavior, self-confidence, technical in quick overview
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Q1. Relevant to experience and self confidence, salary Discussion and further process guidelines
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Q1. What is arrow functions
Ans. 
Arrow functions are a concise way to write functions in JavaScript.
• Arrow functions are introduced in ES6.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword.

• They are best suited for non-method functions.

• Example: const add = (a, b) => a + b;
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Q1. Write code for parenthesis matching
Ans. 
Code to match parentheses in a string
• Use a stack to keep track of opening parentheses

• Iterate through the string and push opening parentheses onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the closing parenthesis
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Q1. Tell me about Hls ja
Ans. 
HLS stands for HTTP Live Streaming, a protocol used for streaming media over the internet.
• HLS breaks the media content into small chunks and delivers them over HTTP.

• It is widely used for streaming video and audio content on the internet.

• HLS allows adaptive bitrate streaming, where the quality of the video adjusts based on the viewer's network speed.

• Popular streaming services like Netflix and Hulu use HLS for delivering
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Q1. Spring and spring boot related microservice system design
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Q1. System design project related
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Coding test data structures and language related

Q1. Related to resume technology
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