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KLA Interview Questions and Answers

Updated 20 Jun 2025
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22 Interview questions

A Senior Software Engineer was asked 2mo ago
Q. Describe a sliding window problem where, given positions on the x-axis with items, the goal is to collect the maximum number of items.
Ans. 

Maximize item collection using a sliding window approach on a 1D axis.

  • Identify the range of positions on the x-axis where items are located.

  • Use two pointers to represent the current window of positions being considered.

  • Expand the right pointer to include more items until the window exceeds the desired range.

  • Contract the left pointer to reduce the window size while maintaining the maximum sum of items.

  • Keep track of...

View all Senior Software Engineer interview questions
A Software Quality Engineer was asked 8mo ago
Q. Draw a flow diagram of wafer test cases.
Ans. 

Flow diagram of Wafer Test cases

  • Start with wafer preparation

  • Perform electrical testing on each die

  • Check for defects and record results

  • Sort dies based on test results

  • End with final wafer disposition

View all Software Quality Engineer interview questions
A Software Quality Engineer was asked 8mo ago
Q. Write test cases.
Ans. 

Test cases should cover various scenarios to ensure software quality.

  • Test case for positive scenario

  • Test case for negative scenario

  • Test case for boundary value testing

  • Test case for error handling

  • Test case for performance testing

View all Software Quality Engineer interview questions
A Summer Intern was asked 10mo ago
Q. Write pseudo code for a bit manipulation problem.
Ans. 

Bit manipulation involves using bitwise operations to solve problems efficiently, often related to integers.

  • Bitwise AND (&) can be used to check if a bit is set. Example: 5 & 1 = 1 (binary 101 & 001).

  • Bitwise OR (|) sets a bit. Example: 5 | 2 = 7 (binary 101 | 010 = 111).

  • Bitwise XOR (^) toggles bits. Example: 5 ^ 3 = 6 (binary 101 ^ 011 = 110).

  • Left shift (<<) multiplies by 2. Example: 5 << 1...

View all Summer Intern interview questions
A Summer Intern was asked 10mo ago
Q. Describe an array-based problem and provide a pseudo-code solution.
Ans. 

The task involves manipulating an array of strings to achieve a specific goal.

  • 1. Define the array: e.g., `String[] names = {"Alice", "Bob", "Charlie"};`

  • 2. Iterate through the array using a loop to access each element.

  • 3. Perform operations like filtering, sorting, or modifying elements.

  • 4. Example: To find names starting with 'A', use a conditional check inside the loop.

View all Summer Intern interview questions
A Senior Software Engineer was asked
Q. Write a pseudo code for the given scenario.
Ans. 

Pseudo code for a scenario

  • Define variables and data structures needed

  • Write the main logic using conditional statements and loops

  • Handle edge cases and error conditions

  • Test the pseudo code with sample inputs

View all Senior Software Engineer interview questions
A Senior Software Engineer was asked
Q. How would you extract customized data from a given dynamic array and perform mathematical operations on the extracted data?
Ans. 

Extract data from a dynamic array and perform mathematical operations on it.

  • Identify the dynamic array structure, e.g., ['12', '15', '20'].

  • Convert string elements to integers for mathematical operations.

  • Perform operations like sum, average, or product on the extracted data.

  • Example: For array ['2', '3', '5'], sum = 2 + 3 + 5 = 10.

  • Use built-in functions like map() for conversion and reduce() for aggregation.

View all Senior Software Engineer interview questions
Are these interview questions helpful?
A Software Quality Engineer was asked
Q. How do you prepare for testing without requirements?
Ans. 

Prepare by gathering information from stakeholders, exploring the application, creating test scenarios, and using exploratory testing.

  • Gather information from stakeholders to understand the purpose of the application.

  • Explore the application to identify key functionalities and potential areas of risk.

  • Create test scenarios based on the observed behavior and potential user interactions.

  • Use exploratory testing to uncov...

View all Software Quality Engineer interview questions
A Softwaretest Engineer was asked
Q. What is Software testing?
Ans. 

Software testing is the process of evaluating a software application or system to identify defects or errors.

  • Software testing is essential to ensure the quality and reliability of software.

  • It involves executing test cases and comparing the actual results with expected results.

  • Testing can be done manually or using automated tools.

  • Types of testing include functional, performance, security, and usability testing.

  • Exam...

View all Softwaretest Engineer interview questions
A Software Developer was asked
Q. You are given a linked list where each node has two pointers: one to the next node and one to a random node in the list. Clone this linked list.
Ans. 

Clone a linked list with random pointers.

  • Create a new node for each node in the original list.

  • Store the mapping between the original and cloned nodes in a hash table.

  • Traverse the original list again and set the random pointers in the cloned list using the hash table.

  • Return the head of the cloned list.

View all Software Developer interview questions

KLA Interview Experiences

48 interviews found

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

I am asked to give the coding test and tech questions on resume and job description

Round 2 - Technical 

(2 Questions)

  • Q1. Domain test questions are asked
  • Q2. Behaviour questions are asked
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - Group Discussion 

What is machine learning

Interview experience
3
Average
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
No response

I applied via Approached by Company and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Coding Test 

2 problem was given to solve
1) Smallest Negative balance - -----%20America%20-%20Weekly%20Algorithm%20Challenges/Week%2021%20Algorithm%20Challenge/Smallest%20Negative%20Balance.md
2) Find the absolute difference between alpha & beta from the array.
Alpha -An element k in a array occurs k consecutive time
Beta - An element k in an array occurs k consecutive time starting from index k

Sample input
Arr[] = {2,2,2,4,4,4,4,1,2,2]
Output
Alpha - 3
Beta - 1
Absolute difference - 1

Note : consider array index starts with 1

Interview Preparation Tips

Interview preparation tips for other job seekers - Understand the problem statement clearly, prepare well for problem solving & DSA

Summer Intern Interview Questions & Answers

user image Anonymous

posted on 20 Aug 2024

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

2 coding questions were given , Running atleast one question with all test cases passing is mandatory.

Round 2 - Technical 

(2 Questions)

  • Q1. Bit manipulation question(asked to write atleast pseudo code)
  • Ans. 

    Bit manipulation involves using bitwise operations to solve problems efficiently, often related to integers.

    • Bitwise AND (&) can be used to check if a bit is set. Example: 5 & 1 = 1 (binary 101 & 001).

    • Bitwise OR (|) sets a bit. Example: 5 | 2 = 7 (binary 101 | 010 = 111).

    • Bitwise XOR (^) toggles bits. Example: 5 ^ 3 = 6 (binary 101 ^ 011 = 110).

    • Left shift (<<) multiplies by 2. Example: 5 << 1 = 10...

  • Answered by AI
  • Q2. Array based question(asked to write atleast pseudo code)
  • Ans. 

    The task involves manipulating an array of strings to achieve a specific goal.

    • 1. Define the array: e.g., `String[] names = {"Alice", "Bob", "Charlie"};`

    • 2. Iterate through the array using a loop to access each element.

    • 3. Perform operations like filtering, sorting, or modifying elements.

    • 4. Example: To find names starting with 'A', use a conditional check inside the loop.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - If you are going for software engineer roles , dont neglect your DSA preparation.
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
  • Q1. What is the longest palindromic substring in a given string?
  • Q2. Given an array where every element occurs twice except for one element that occurs only once, how can you find the element that occurs only once? Additionally, what is the expected time complexity of your ...
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview in Feb 2025, where I was asked the following questions.

  • Q1. What your exp?
  • Ans. 

    I have over 5 years of experience in software development, specializing in web applications and cloud technologies.

    • Developed a full-stack web application using React and Node.js, improving user engagement by 30%.

    • Led a team of 4 developers in creating a microservices architecture for a scalable e-commerce platform.

    • Implemented CI/CD pipelines using Jenkins and Docker, reducing deployment time by 50%.

    • Worked with Agile met...

  • Answered by AI
  • Q2. What is you total exp?

Test Lead Interview Questions & Answers

user image mohan kumar

posted on 11 Dec 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Simple easy not much difficult to clear for 3 years experience

Round 2 - Coding Test 

Easy leetcode easy question asked easy to clear

Round 3 - HR 

(2 Questions)

  • Q1. Basic personal details
  • Q2. Salary Negotiations

Sdet Engineer Interview Questions & Answers

user image Anonymous

posted on 28 Aug 2024

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.

Round 1 - Case Study 

Chart diagram from Given Test Scenario

Round 2 - Assignment 

Algo on Image Comparison

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Round 1- 30 questions of aptitude

Round 2 - One-on-one 

(2 Questions)

  • Q1. Draw flow diagram of Wafer Test cases
  • Ans. 

    Flow diagram of Wafer Test cases

    • Start with wafer preparation

    • Perform electrical testing on each die

    • Check for defects and record results

    • Sort dies based on test results

    • End with final wafer disposition

  • Answered by AI
  • Q2. Write Test cases
  • Ans. 

    Test cases should cover various scenarios to ensure software quality.

    • Test case for positive scenario

    • Test case for negative scenario

    • Test case for boundary value testing

    • Test case for error handling

    • Test case for performance testing

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on test cases creation
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Instahyre and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Coding Test 

Question based on the array and graph. its 1 hour test on hackerrank

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare medium level leetcode question

Top trending discussions

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Interview Tips & Stories
2w
toobluntforu
·
works at
Cvent
Can speak English, can’t deliver in interviews
I feel like I can't speak fluently during interviews. I do know english well and use it daily to communicate, but the moment I'm in an interview, I just get stuck. since it's not my first language, I struggle to express what I actually feel. I know the answer in my head, but I just can’t deliver it properly at that moment. Please guide me
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KLA Interview FAQs

How many rounds are there in KLA interview?
KLA interview process usually has 2-3 rounds. The most common rounds in the KLA interview process are Coding Test, Technical and HR.
How to prepare for KLA interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at KLA. The most common topics and skills that interviewers at KLA expect are Packaging, Application Development, C++, Chip Design and Semiconductor Manufacturing.
What are the top questions asked in KLA interview?

Some of the top questions asked at the KLA interview -

  1. What is the angle between minute and hour hand for a particular time...read more
  2. If new and malloc both allocated in heap then how to access them separately? Ho...read more
  3. How default ” = ” operator and copy constructor is used and why we need to ...read more
What are the most common questions asked in KLA HR round?

The most common HR questions asked in KLA interview are -

  1. Where do you see yourself in 5 yea...read more
  2. What are your strengths and weakness...read more
  3. Tell me about yourse...read more
How long is the KLA interview process?

The duration of KLA interview process can vary, but typically it takes about less than 2 weeks to complete.

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Overall Interview Experience Rating

4.1/5

based on 32 interview experiences

Difficulty level

Easy 19%
Moderate 57%
Hard 24%

Duration

Less than 2 weeks 62%
2-4 weeks 33%
4-6 weeks 5%
View more
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based on 71 reviews

3.8/5

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