Vem Technologies Software Engineer Interview Questions and Answers

Basic leetcode problems

Q1. Basic java questions
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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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Q1. Basic about resume and project
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Q2. Details in c /c ++ programming
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Q3. What is difference between c and c++
Ans. 
C++ is an extension of C with object-oriented programming features.
• C++ supports object-oriented programming while C does not.

• C++ has a richer set of data types and operators than C.

• C++ has better support for exception handling and templates than C.

• C++ allows function overloading while C does not.

• C++ has a standard library that includes many useful functions and classes.

• C++ is backward compatible with C code.

• C++ is gene
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Q4. What is tupple in python and also details in python programming
Ans. 
Tuple is an immutable sequence type in Python that can store multiple values of different data types.
• Tuples are defined using parentheses () and separated by commas.

• Tuples can be accessed using indexing or slicing.

• Tuples are immutable, meaning their values cannot be changed once defined.

• Tuples are commonly used for returning multiple values from a function.

• Tuples can also be used as keys in dictionaries.

• Example: my_tup...read more
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Q5. Asked about software development life cycle
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Basic c Programming and Embedded Systems

Q1. C and Do-178b questions
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Q1. C and Embedded system and Project related
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Q1. Manager Round, Mostly technical
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Q1. Package discussion and my previous employer details
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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?
Ans. 
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. Javascript basics, Easy to Medium coding problems
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Q1. React server side vs client side
Ans. 
React server side rendering generates HTML on the server while client side rendering generates HTML on the browser.
• Server side rendering is better for SEO and initial page load time

• Client side rendering is better for interactivity and dynamic content

• Server side rendering requires more initial setup and configuration

• Client side rendering can be easier to develop and maintain
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Q2. Convert class based component to functional component
Ans. 
To convert a class based component to functional component, we need to remove the class syntax and use hooks instead.
• Remove the class syntax and replace it with a function

• Remove the render method and return the JSX directly

• Replace this.props with props

• Use useState hook to manage state

• Use useEffect hook to manage lifecycle methods
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Q3. SQL easy to medium questions
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Q1. Manager round. Discussion about the current project that you are working, technical implementation using AWS
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Q2. Behavioural questions
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Q1. Behavioural questions
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