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Cadence Design Systems
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Cadence Design Systems SDE-2 Interview Questions, Process, and Tips
Top Cadence Design Systems SDE-2 Interview Questions and Answers
- Q1. Find All Pairs with Given Sum Given an integer array arr and an integer Sum , count and return the total number of pairs in the array whose elements add up to the given ...read more
- Q2. Minimum Number of Jumps Problem Given an array ARR of N integers, determine the minimum number of jumps required to reach the last index of the array (i.e., N - 1 ). Fro ...read more
- Q3. Two Teams (Check Whether Graph is Bipartite or Not) Determine if a given undirected graph can be divided into exactly two disjoint cliques. Print 1 if possible, otherwis ...read more
Cadence Design Systems SDE-2 Interview Experiences
2 interviews found
Anonymous
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Inheritancebased question, virtual function 2 times called
- Q2. Sort and array in user defined order
- Q3. Median from stream of integers
- Q4. Smart Pointer and all types
- Q5. Copy contructor
- Q6. Shallow and deep copy
- Q7. Tree taversals all types
Interview Preparation Tips
I appeared for an interview in Sep 2021.
(2 Questions)
Round duration - 60 minutes
Round difficulty - Medium
Standard Data Structures and Algorithms round . One has to be fairly comfortable in solving algorithmic problems to pass this round with ease.
- Q1.
Find All Pairs with Given Sum
Given an integer array
arrand an integerSum, count and return the total number of pairs in the array whose elements add up to the givenSum.Input:
The first line contain... - Ans.
Count and return the total number of pairs in the array whose elements add up to a given sum.
Use a hashmap to store the frequency of each element in the array.
Iterate through the array and for each element, check if (Sum - current element) exists in the hashmap.
Increment the count of pairs if the complement exists in the hashmap.
- Q2.
Minimum Number of Jumps Problem
Given an array
ARRofNintegers, determine the minimum number of jumps required to reach the last index of the array (i.e.,N - 1). From any indexi, you can jump to an in... - Ans.
The problem involves finding the minimum number of jumps required to reach the last index of an array, where each element indicates the maximum distance that can be jumped from that position.
Use a greedy approach to keep track of the farthest reachable index and the current end of the jump.
Iterate through the array, updating the farthest reachable index and incrementing the jump count when necessary.
Return the jump cou...
(5 Questions)
Round duration - 70 minutes
Round difficulty - Medium
This round was preety intense and went for over 1 hour . I was asked 2 preety good coding questions (one was from Graphs and the other one was from DP) . After that I was grilled on my Computer Networks and Operating System concepts but luckily I was able to answer all the questions and the interviewer was also quite impressed.
- Q1.
Two Teams (Check Whether Graph is Bipartite or Not)
Determine if a given undirected graph can be divided into exactly two disjoint cliques. Print 1 if possible, otherwise print 0.
Input:
The first line ... - Ans.
Check if a given undirected graph can be divided into exactly two disjoint cliques.
Create an adjacency list to represent the graph
Use BFS or DFS to check if the graph is bipartite
If the graph is bipartite, it can be divided into two disjoint cliques
- Q2.
Maximum Length Pair Chain Problem
You are provided with 'N' pairs of integers, where the first number in each pair is less than the second number, i.e., in pair (a, b) -> a < b. A pair chain is defi...
- Ans.
Find the length of the longest pair chain that can be formed using the provided pairs.
Sort the pairs based on the second number in each pair.
Iterate through the sorted pairs and keep track of the maximum chain length.
Update the maximum chain length based on the conditions given in the problem statement.
- Q3. Can you explain the TCP/IP Protocol?
- Ans.
TCP/IP is a set of rules governing the exchange of data over the internet.
TCP/IP stands for Transmission Control Protocol/Internet Protocol.
It is a suite of communication protocols used to connect devices on the internet.
TCP ensures that data is delivered reliably and in order, while IP handles the addressing and routing of data packets.
Examples of TCP/IP applications include web browsing (HTTP), email (SMTP), and file
- Q4. Can you explain the DHCP Protocol?
- Ans.
DHCP Protocol is used to automatically assign IP addresses to devices on a network.
DHCP stands for Dynamic Host Configuration Protocol
It allows devices to obtain IP addresses and other network configuration information dynamically
DHCP servers assign IP addresses to devices for a specific lease period
DHCP uses a client-server model where the client requests an IP address and the server assigns one
DHCP uses UDP port 67 f
- Q5. What is meant by multitasking and multithreading in operating systems?
- Ans.
Multitasking involves running multiple tasks concurrently, while multithreading allows multiple threads within a single process to run concurrently.
Multitasking allows multiple processes to run concurrently on a single processor, switching between them quickly.
Multithreading allows multiple threads within a single process to run concurrently, sharing resources like memory and CPU time.
Multitasking is at the process lev...
(4 Questions)
Round duration - 60 minutes
Round difficulty - Hard
This round majorly focused on past projects and experiences from my Resume and some standard System Design + LLD questions + some basic OOPS questions which a SDE-2 is expected to know .
- Q1. How would you design a system like Pastebin?
- Ans.
Design a system like Pastebin for sharing text snippets
Use a web application framework like Django or Flask for the backend
Store text snippets in a database like MySQL or MongoDB
Generate unique URLs for each snippet to share with others
Implement features like syntax highlighting, expiration time, and password protection
Consider implementing user accounts for managing and organizing snippets
- Q2. What is data abstraction and how can it be achieved?
- Ans.
Data abstraction is the process of hiding implementation details and showing only the necessary features of an object.
Data abstraction can be achieved through classes and objects in object-oriented programming.
It involves creating a class with private data members and public methods to access and modify those data members.
By using data abstraction, users can interact with objects without needing to know the internal wo...
- Q3. What is the Diamond Problem in C++ and how can it be resolved?
- Ans.
Diamond Problem is a common issue in multiple inheritance in C++ where a class inherits from two classes that have a common base class.
Diamond Problem occurs when a class inherits from two classes that have a common base class, leading to ambiguity in accessing members.
It can be resolved in C++ using virtual inheritance, where the common base class is inherited virtually to avoid duplicate copies of base class members.
...
- Q4. What are friend functions in C++?
- Ans.
Friend functions in C++ are functions that are not members of a class but have access to its private and protected members.
Friend functions are declared inside a class with the keyword 'friend'.
They can access private and protected members of the class they are friends with.
Friend functions are not member functions of the class.
They can be standalone functions or functions of another class.
Example: friend void displayD
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I appeared for an interview before May 2021.
(3 Questions)
Round duration - 90 Minutes
Round difficulty - Medium
DS, ALgo & Operating systems.
- Q1. What is a race condition?
- Ans.
A race condition is a situation in which the outcome of a program depends on the timing of uncontrollable events.
Occurs when multiple threads or processes access shared data or resources concurrently
Can lead to unpredictable behavior and bugs in the program
Example: Two threads trying to increment the same variable simultaneously
- Q2. What is the difference between a mutex and a semaphore?
- Ans.
Mutex is used for exclusive access to a resource by only one thread at a time, while semaphore can allow multiple threads to access a resource simultaneously.
Mutex is binary semaphore with ownership, used for mutual exclusion.
Mutex is typically used to protect critical sections of code.
Semaphore is a generalized synchronization primitive that can have a count greater than 1.
Semaphore can be used to control access to a ...
- Q3.
Power of Two Problem Statement
Determine whether a given integer
Nis a power of two. Returntrueif it is, otherwise returnfalse.Explanation
An integer 'N' is considered a power of two if it can be e...
- Ans.
Check if a given integer is a power of two or not.
Check if the given integer is greater than 0.
Check if the given integer has only one set bit (i.e., it is a power of 2).
Return true if the above conditions are met, else return false.
Round duration - 100 Minutes
Round difficulty - Medium
Focus on projects, Computer Architecture.
Round duration - 30 Minutes
Round difficulty - Easy
Interview Preparation Tips
Tip 1 : Work on fundamentals of C, focus more on reading standard text like The C programming language by DR.
Tip 2 : Operating Systems is a must, use either galvin or tanenbaum.
Tip 3 : Focus on DS Like linked list, trees, stacks , queues and arrays.
Tip 1 : Include Operating system, computer architecture
Tip 2 : Include projects related to IOT
Skills evaluated in this interview
I applied via Campus Placement and was interviewed before Jul 2021. There were 3 interview rounds.
(1 Question)
- Q1. SDLC, digital circuit, rtl
(1 Question)
- Q1. Rtl coding verilog system verilog
(1 Question)
- Q1. Introduction, hr policy company profile
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Apr 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Vlsi design flow, sta, perl programming, puzzle
Interview Preparation Tips
I appeared for an interview in Sep 2017.
Interview Questionnaire
2 Questions
- Q1. Find the sum of two numbers without using any mathematical operarors.
- Ans.
Use bitwise operations to find the sum of two numbers without using mathematical operators.
Use bitwise XOR to find the sum of two numbers without carrying.
Use bitwise AND and left shift to find the carry.
Repeat the process until there is no carry left.
- Q2. Delete a node from linked list when we are given a reference to the node. But the head pointer is not given.
- Ans.
To delete a node from a linked list when only given a reference to the node, we can copy the data of the next node to the given node and delete the next node.
Copy the data of the next node to the given node
Update the next pointer of the given node to skip the next node
Delete the next node
Interview Preparation Tips
Tips: Strong understanding and thorough knowledge of C programming.
College Name: IIT Madras
Skills evaluated in this interview
Niranjhana Narayanan
I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Why UDP and not TCP in project
- Ans.
UDP is preferred over TCP in this project due to its low latency and lightweight nature.
UDP is a connectionless protocol, which means it does not establish a direct connection between the sender and receiver.
UDP is faster than TCP as it does not have the overhead of establishing and maintaining a connection.
UDP is suitable for applications where real-time data transmission is crucial, such as video streaming or online ...
- Q2. How would you clear the 7th bit in a 32 bit register
- Ans.
To clear the 7th bit in a 32-bit register, perform a bitwise AND operation with a mask that has all bits set to 1 except the 7th bit.
Create a mask with the 7th bit set to 0 and all other bits set to 1
Perform a bitwise AND operation between the register and the mask
Store the result back in the register
Interview Preparation Tips
Experience: Questions were based on C concepts, given piece of code, find error, output, etc then data structures, bit manipulation, a few aptitude questions were also there (around 5-7).
Tips: Practice aptitude, C, data structures (geeksforgeeks.org is a good source).
Duration: 1 hour
Total Questions: 30
Round: Technical + HR Interview
Experience: I was asked to explain project in detail, I had done projects on embedded, so was asked about that, details like what fields did you use in that structure, why this implementation and not some related other. Memory management, network communications, operating systems. Then questions on C concepts like memory allocation, function pointers, then data structures like linked lists, then bit manipulation in registers. Questions from electrical coursework. Then later, why higher studies, would you still go for higher studies if you had a good job at a company, why etc.
Tips: Be thorough with C (know your Kernighan & Ritchie) and be prepared to go into details about your projects.
Skills: C, Data Structures, Coursework Understanding, Project And Internship
College Name: IIT Madras
Skills evaluated in this interview
I applied via Campus Placement
Interview Questionnaire
16 Questions
- Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be us...
- Q2. Given an array A[n], write a C program to find P and Q (P>Q) such that A[P] - A[Q] is maximum
- Q3. A pyramid is given many blank spaces. Condition is that number in a cell equals sum of numbers in bottom two cells. Fill the blanks
- Ans.
The question asks to fill the blanks in a pyramid where each number is the sum of the numbers in the bottom two cells.
Start from the bottom row and work your way up, calculating the sum of the numbers in the bottom two cells for each blank space.
Use a loop to iterate through each row and column of the pyramid.
Store the calculated sum in the corresponding blank space.
Repeat the process until all the blanks are filled.
- Q4. What are the basic functions of OS?
- Q5. What is scheduling? List different types of scheduling
- Q6. What is a deadlock? How to know if a deadlock is present?
- Q7. What is Moore's Law?
- Ans.
Moore's Law is the observation that the number of transistors in a dense integrated circuit doubles about every two years.
Named after Intel co-founder Gordon Moore
First stated in 1965
Has been a driving force behind technological advancements
Predicts exponential growth in computing power
Has been challenged in recent years due to physical limitations
- Q8. Differentiate between a process and a thread
- Ans.
A process is an instance of a program while a thread is a subset of a process.
A process has its own memory space while threads share memory space
Processes are heavyweight while threads are lightweight
Processes communicate through inter-process communication while threads communicate through shared memory
Examples of processes include web browsers, text editors, etc. while examples of threads include GUI updates, backgro
- Q9. What are the advantages of having multi-core processor?
- Ans.
Multi-core processors provide faster and more efficient computing.
Improved performance and speed
Ability to handle multiple tasks simultaneously
Reduced power consumption
Better multitasking capabilities
Enhanced user experience
Examples: Intel Core i7, AMD Ryzen 9
- Q10. Tell me about yourself and your family briefly
- Ans.
I am a software engineer with a loving family.
I have been working as a software engineer for 5 years.
My wife is a teacher and we have two children.
We enjoy spending time together outdoors and traveling.
My parents live in a different state but we keep in touch regularly.
Family is very important to me and I prioritize spending time with them.
- Q11. Tell me about your course projects
- Ans.
Developed a web-based project management tool and a mobile app for tracking expenses
Created a responsive UI using React and Bootstrap
Implemented user authentication and authorization using Firebase
Integrated Google Maps API for location tracking in the mobile app
Used Node.js and MongoDB for backend development
Collaborated with a team of four to complete the projects
- Q12. Tell me about your professional experience
- Ans.
I have 5 years of experience in software engineering with expertise in Java and Python.
Developed and maintained web applications using Java and Spring framework
Designed and implemented RESTful APIs using Python and Flask
Worked on database management and optimization using MySQL and MongoDB
Collaborated with cross-functional teams to deliver high-quality software products
Participated in code reviews and provided construc
- Q13. What are your academic interests?
- Ans.
My academic interests include computer science, artificial intelligence, and machine learning.
Computer science
Artificial intelligence
Machine learning
- Q14. Explain one CS topic(of your choice) in layman terms
- Ans.
Explain Big O notation
Big O notation is used to describe the time complexity of an algorithm
It helps us understand how the algorithm's performance changes with input size
O(1) means constant time, O(n) means linear time, O(n^2) means quadratic time
We want algorithms with lower Big O values for better performance
- Q15. What are your location preferences?
- Ans.
I am open to relocation based on the job opportunity and growth prospects.
Open to relocation for the right opportunity
Willing to move for career growth
Flexible with location based on job requirements
- Q16. Would you like to have a pizza slice? ;)
- Ans.
Yes, I would love to have a pizza slice!
I am a big fan of pizza and would never say no to a slice!
Pizza is the perfect food for any occasion, whether it's a quick lunch or a late-night snack.
I particularly enjoy pepperoni and mushroom pizza, but I'm open to trying new toppings as well.
Interview Preparation Tips
Experience: Questions were of average difficulty but lengthy. The test was conducted between 7:30 PM and 9 PM. I had a long day so it was a little tiresome.
Tips: Time is of importance. I suggest you to quickly browse through all the questions and pick the easy ones beforehand instead of being stuck on a single difficult question.
Duration: 90 minutes
Total Questions: 60
Round: Technical Interview
Experience: I found the questions easy so I was able to answer them all.
Tips: Don't just think in your mind. Think out loud so that the interviewer can correct you.
Round: HR Interview
Experience: Interviewer was friendly. It was like talking with a friend.
Tips: Keep it short and brief. It's fine even if your English is not good. (Mine wasn't )
General Tips: Be cool and calm. If you don't know something, admit it. You can come back to it later.
Skill Tips: No need to go very deep. Just know the basics properly.
Skills: Puzzle Solving Capability, Computer Organisation, Operating System Basics, Object Oriented Programming (OOP) Basics, C Programming, Aptitude
Duration: 2
College Name: IIT Madras
Motivation: Qualcomm is an industry leader in mobile hardware. The work profile suited me well.
Funny Moments: The nice HR lady offered me a pizza slice.
Skills evaluated in this interview
I appeared for an interview in Nov 2016.
Interview Questionnaire
8 Questions
- Q1. A random number will be given as input to system,write a program to detect its data type(int or float ) without using size of function
- Q2. General hr questions
- Q3. Once again general hr interview questions
- Q4. 1.given a large rectangle
- Ans.
Need more context. What needs to be done with the large rectangle?
What are the dimensions of the rectangle?
Is it a 2D or 3D object?
What is the context of the problem?
Are there any constraints or limitations?
What tools or programming languages can be used?
- Q5. You will be given dimensions of a bigger rectangle and smaller rectangle,derive a formula to get how many smaller rectangles fit into the bigger rectangle
- Ans.
Derive a formula to determine how many smaller rectangles fit into a bigger rectangle given their dimensions.
Calculate the number of times the smaller rectangle can fit into the bigger rectangle horizontally and vertically
Divide the width of the bigger rectangle by the width of the smaller rectangle to get the horizontal count
Divide the height of the bigger rectangle by the height of the smaller rectangle to get the ve...
- Q6. How many points are required to draw a rectangle
- Ans.
At least 4 points are required to draw a rectangle.
A rectangle has 4 sides and 4 corners, so at least 4 points are needed to define those corners.
The points must be arranged in a specific order to form a closed shape with 4 sides.
Additional points can be used to add details or modify the shape of the rectangle.
The number of points required may vary depending on the software or tool used to draw the rectangle.
- Q7. What will be the new coordinates of a rectangle points if rectangle length and breadth is scaled and write a program to calculate the coordinates of corner points of scaled rectangle
- Ans.
Answering how to calculate new coordinates of a scaled rectangle and providing a program for it.
To calculate new coordinates, multiply the original coordinates by the scaling factor
Scaling factor can be calculated by dividing the new length/breadth by the original length/breadth
Program can take input of original coordinates, scaling factor, and output new coordinates
Example: Original coordinates: (0,0), (0,5), (5,5), (...
- Q8. Lastly a puzzle: i dont remember the question
Interview Preparation Tips
Experience: The test had three sections:
1.aptitude:It was like any other aptitude test,all it takes is a bit of practice to crack all the questions
2.C programming:Basics of c were asked,outputs of some programs,u have to be thorough with concepts of c
3.Electronics:The company hired for both profiles: 1. PDK:software
and 2.Logic library:hardware,so this electronics section was also there,questions are mostly Network analysis,cmos logic,digital logic,vlsi etc
u should have good basics to get the electronics questions of course they are not very hard,but not too easy
Tips: practice aptitude,basics of c programming and also basics of electronics
Duration: 1 hour 30 minutes
Total Questions: 60
Round: Test
Experience: after 1st round i was shortlisted to this technical round,i was asked this question, i suggested that i will convert that number into a string and check whether string has a dot or not to check if it is float or int,the interviewer was not very impressed but was ok and asked few small questions and promoted me to next round
Tips: If u crack test with top marks,the technical rounds will be very easy,because the interviewers do not ask tough questions for people who cracked written test with high marks
Round: Technical Interview
Experience: tell me about yourself,strengths,weakness,three principles u follow in life,etc
Tips: This round depends on you,dont try to bluff something,they will know if u are bluffing,take a breath and speak up ur mind,be confident u can do it
Round: HR Interview
Experience: same questions,but this time less duration,not involving lengthy discussions, i think this round was just for double check
Round: HR Interview
Experience: After the hr round,only seven were shortlist,this interview round was very much easy and they checked my approach to the given problem,they were checking how well i am thinking adding complexities to the given problem
Tips: they did not check my programming ability,but just problem solving skills,so be good at aptitude,by practicing as much as you can
Round: Group Discussion
Experience: after technical interview,4 were shortlisted,so they went for gd round,it was general topic,which checks your general knowledge
Tips: Dont be nervous,just speak what ever you know,never mind language issues
Duration: 20 minutes
Skills: for pdk profile :programming
College Name: NIT Warangal
I appeared for an interview in Aug 2017.
Interview Preparation Tips
Duration: 1 hour 30 minutes
Total Questions: 60
Round: Technical Interview
Experience: Questions about DS , CN and basic resume
Round: Technical Interview
Experience: Questions about RT OS and memory mapping. And other operating system related questions.
Projects done so far.
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