Collins Aerospace Software Engineer Interview Questions and Answers

Basic leetcode problems

Q1. Basic java questions
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First levelWe can choose among different layer, webapi, UI and they asked to write sample program in 90 mins. Second level was really bad though. Will be asked to write code basics to advanced.

Q1. Second level was also coding.
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Q1. Frequency of character
Ans. 
The question is asking about how often each character appears in a given string.
• Iterate through the string and count the frequency of each character using a hashmap.

• Return the hashmap with characters as keys and their frequencies as values.
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Hacker Rank code testing. Now it is removed.

Q1. C/C++ coding round. Simple questions related to memory segments.
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Q1. Thread synchronisation, internal architecture of Linux.
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Q1. Where do you see yourself after 5 years ? What is your future aspirations?
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Coding on dsa with easy will question

Q1. Draw a linked list
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There was simple aptitude questions along with some C snippet

Q1. Difference between RISC and CISC?
Ans. 
RISC (Reduced Instruction Set Computing) has a smaller set of simple instructions, while CISC (Complex Instruction Set Computing) has a larger set of complex instructions.
• RISC processors have simpler instructions that can be executed in a single clock cycle, making them faster.

• CISC processors have more complex instructions that may require multiple clock cycles to execute.

• RISC architectures typically have a smaller chi...read more
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Q2. How ADC(Analog to Digital Converter) works?
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ADC converts analog signals into digital data by sampling the input signal at regular intervals.
• ADC samples the input signal at regular intervals

• It quantizes the sampled values into discrete digital values

• The resolution of ADC determines the number of possible digital values

• Common types of ADC include successive approximation ADC and delta-sigma ADC
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Q1. Oops concepts . Design patterns
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