Cadence Design Systems Interview Questions, Process, and Tips

Q1. Capacitor and voltage in series and parallel
Ans. 
Capacitors in series add reciprocally, in parallel add directly. Voltage in series is the sum, in parallel is the same.
• Capacitors in series: 1/Ctotal = 1/C1 + 1/C2

• Capacitors in parallel: Ctotal = C1 + C2

• Voltage in series: Vtotal = V1 + V2

• Voltage in parallel: Vtotal = V1 = V2
Answered by AI
Add your answer
Q2. RLC circuit and circuit theory
Add your answer

Q1. Analyse the output of the circuitry
Ans. 
The output of the circuitry needs to be analyzed for functionality and accuracy.
• Examine the input and output signals to ensure they are within expected ranges

• Check for any noise or interference in the output

• Verify that the circuit is functioning as designed based on the specifications

• Look for any potential issues or errors in the output
Answered by AI
Add your answer
Q2. Draw the output waveforms
Ans. 
The output waveforms can be drawn based on the input signal and circuit configuration.
• Understand the input signal characteristics (frequency, amplitude, etc.)

• Analyze the circuit components and their effects on the signal

• Draw the output waveform based on the input and circuit analysis
Answered by AI
Add your answer

Q1. Add two linked list
Ans. 
To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.
• Create a dummy node to hold the result.

• Initialize current node to dummy node.

• Iterate through both lists, adding values and carry from previous addition.

• Move to next nodes in both lists.

• Handle cases where one list is longer than the other.

• Handle final carry if present.
Answered by AI
Add your answer
Q2. Find shortest path in graph
Ans. 
Use Dijkstra's algorithm to find the shortest path in a graph
• Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph

• Maintain a priority queue to keep track of the shortest distance to each node

• Update the shortest distance to each node as you traverse the graph

• Track the path by storing the previous node for each node visited
Answered by AI
Add your answer

Q1. Check tree is BST
Ans. 
Check if a binary tree is a Binary Search Tree (BST)
• Perform an in-order traversal of the tree and check if the resulting array is sorted

• Keep track of the previous node value during traversal to compare with the current node value

• Ensure that each node's value is greater than the previous node's value in the in-order traversal
Answered by AI
Add your answer
Q2. Check substring palindrome or not
Ans. 
Check if a substring in an array of strings is a palindrome or not.
• Iterate through each string in the array

• For each string, check if any of its substrings are palindromes

• Return true if a palindrome substring is found, false otherwise
Answered by AI
Add your answer

It was an online assesment followed by an offline assessment.

Q1. Create a Linked List
Ans. 
A linked list is a data structure where each element points to the next element in the sequence.
• Create a Node class with data and next pointer

• Initialize a head pointer to null

• Add elements by creating new nodes and updating next pointers

• Traverse the list by following next pointers
Answered by AI
Add your answer
Q2. Insert a node in a Linked List
Ans. 
To insert a node in a Linked List, update the next pointer of the new node to point to the current node's next, then update the current node's next pointer to the new node.
• Create a new node with the desired value

• Set the new node's next pointer to the current node's next

• Update the current node's next pointer to the new node
Answered by AI
Add your answer
Q3. Project based questions and CS fundamentals
Add your answer

Q1. CGPA over 8 was the criteria
Add your answer

Logical Reasoning, Verbal Reasoning , Quantitative Ability, Digital Electronics
DSP, C, Verilog, Digital Design

Q1. Array addition of two numbers
Ans. 
Add two numbers represented as arrays
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other

• Return the result as a new array
Answered by AI
Add your answer
Q2. Access modifiers in java
Ans. 
Access modifiers in Java control the visibility of classes, methods, and variables.
• There are four types of access modifiers in Java: public, protected, default (no modifier), and private.

• Public: accessible from any other class.

• Protected: accessible within the same package or subclasses.

• Default: accessible only within the same package.

• Private: accessible only within the same class.

• Example: public class MyClass {}
Answered by AI
Add your answer
Q3. Complete code of all projects
Ans. 
It is not common practice to provide complete code of all projects in an interview setting.
• It is not recommended to share complete code of all projects due to confidentiality and intellectual property concerns.

• Instead, focus on discussing the technologies used, challenges faced, and solutions implemented in your projects.

• Provide code snippets or high-level overviews of your projects to showcase your skills and experien
Answered by AI
Add your answer
Q4. Deep learning- Yolov5 architecture, details on kernel size, reason for choosing Yolov5, preprocessing techniques
Add your answer
Q5. BLE(Bluetooth Low Energy), Macros in C
Add your answer

Q1. Explain the working of CMOS inverter
Ans. 
CMOS inverter is a type of logic gate that converts input signals into their complementary outputs.
• CMOS inverter consists of a PMOS transistor and an NMOS transistor connected in series.

• When input is high, PMOS conducts and NMOS is off, resulting in output low.

• When input is low, NMOS conducts and PMOS is off, resulting in output high.

• CMOS technology is widely used in digital integrated circuits due to its low power con
Answered by AI
Add your answer
Q2. Write a verilog code for sequence detectro
Ans. 
Verilog code for sequence detector
• Use state machines to detect the desired sequence

• Define states for each part of the sequence

• Use combinational logic to transition between states

• Implement the Verilog code using if-else statements and always blocks
Answered by AI
Add your answer

Asked about Network theory

Q1. Asked about electrical questions
Add your answer
Q2. Does not remember
Add your answer

Q1. Describe virtual functions
Ans. 
Virtual functions allow a function to be overridden in a derived class, enabling polymorphic behavior.
• Virtual functions are declared in a base class with the 'virtual' keyword.

• They are meant to be overridden in derived classes to provide specific implementations.

• When a virtual function is called through a base class pointer or reference, the actual function to be executed is determined at runtime based on the object's ...read more
Answered by AI
Add your answer