CommScope Software Development Engineer II Interview Questions and Answers

Q1. 1. To check if word 1 is an anagram of word 2. 2. Questions around Springboot basics 3. SOLID design principles.
Ans. 
To check if two words are anagrams, compare the sorted characters of each word.
• Sort the characters of both words

• Compare the sorted characters to check if they are equal

• Handle edge cases like different lengths or special characters
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Q1. 1. Multi threading related questions and managerial round.
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Q1. Sql related ques mege into, rank,dense rank,queries of joins etc.
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Q2. Java 8 related ques optional and stream
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Q1. Reverse a linked list.
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Q2. Merge sort on a array/
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Basi aptitude and coding mcq

Q1. What is hashmap
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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. What are the things that u do when your what app screen is blank
Ans. 
I would check for internet connection, restart the app, clear cache, and update the app.
• Check internet connection

• Restart the app

• Clear cache

• Update the app
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Q2. Simple python code
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Questions were asked

Dsa dp, graphs and many more questions from arrays and linked list were asked

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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