Acorn Tech Interview Questions and Answers

Q1. Please explain your day to day activities
Add your answer
Q2. Tell me about a challenging situation
Add your answer

Virtual round for fundamental coding.

Physical round for coding assignment given on a paper.

Q1. How does twisted cable work? How to see CAN voltage levels on Oscilloscope?
Add your answer
Q2. Swap the bits in a byte.
Add your answer
Q3. Why you want to join the company?
Add your answer
Q4. How soon you can join the company?
Add your answer

Q1. Are you comfortable with this role, general corporate behaviour questions, background information
Add your answer
Q2. Puzzles
Add your answer

Q1. Test creation, case study
Add your answer
Q2. Python, selenium, SQL
Add your answer

Q1. Corporate behaviour questions, 2 puzzle questions
Add your answer

Q1. Compensation discussion
Add your answer

Q1. Sv hvm questions on constraiants and assertions
Add your answer
Q2. Questions on resume projects
Add your answer

Q1. Questions on protocols
Add your answer
Q2. Sv uvm questions
Add your answer

Q1. Salary and pckge discussion
Add your answer
Q2. Details on client interview
Add your answer

Q1. Projects and challenges
Add your answer
Q2. Sv uvm basics
Add your answer

Q1. What are the different types of maintenance?
Add your answer
Q2. What are the eight pillars?
Add your answer
Q3. What is the types of hydraulics?
Add your answer
Q4. How does hydraulic pump function?
Add your answer
Q5. What is the MTTR?
Add your answer

Q1. Merge intervals ( Leetcode)
Add your answer
Q2. Buy and sell stocks II (Leetcode)
Add your answer
Q3. Runtime polymorphism and how it works vptr and vtable
Ans. 
Runtime polymorphism in C++ is achieved through virtual functions, vptr (virtual pointer), and vtable (virtual table).
• Runtime polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Virtual functions are declared in a base class and overridden in derived classes to achieve polymorphism.

• vptr is a pointer that points to the vtable of an object, allowing dynamic binding of virtual ...read more
Answered by AI
Add your answer
Q4. Which version of c++ you use
Ans. 
I primarily use C++17, but I am familiar with earlier versions as well.
• I am comfortable working with features introduced in C++17 such as structured bindings and constexpr if

• I have experience with earlier versions like C++11 and C++14

• I stay updated with the latest features and improvements in C++ standards
Answered by AI
Add your answer
Q5. Design patterns
Add your answer
Q6. Have you used any windows api's?
Ans. 
Yes, I have used Windows API's extensively in my previous projects.
• I have used Windows API's for tasks such as creating windows, handling messages, and interacting with system resources.

• Examples include using functions like CreateWindow, SendMessage, and ReadFile.

• I have also worked with specific Windows API's like Winsock for networking and WinINet for internet-related tasks.
Answered by AI
Add your answer

Q1. One debugging question was given which will test knowledge on copy constructor, copy assignment, their return type move constructor, move assignment shallow copy, deep copy runtime polymorphism pointer ini...read more
Add your answer
Q2. What is dynamic_cast where it can fail and what will happen in that case
Ans. 
dynamic_cast is a C++ operator used for safe downcasting of pointers and references in polymorphic classes.
• dynamic_cast is used to safely downcast a pointer or reference from a base class to a derived class.

• It can fail if the object being casted is not of the target type, in which case it returns a null pointer for pointers or throws a std::bad_cast exception for references.

• Dynamic_cast can only be used with pointers o...read more
Answered by AI
Add your answer

Q1. Same debugging question while making it advance how will you handle in case there is data member of pointer to int array in deep copy how will you ensure that it does delete previous data in case new opera...read more
Add your answer
Q2. What is union in c++
Ans. 
Union in C++ is a data structure that allows storing different data types in the same memory location.
• Unions are similar to structures but all members share the same memory location.

• Only one member of a union can be accessed at a time.

• Unions are useful when you need to store different data types in the same memory space.

• Example: union MyUnion { int i; float f; };

• Example: MyUnion u; u.i = 10; // Accessing integer member
Answered by AI
Add your answer
Q3. What is weak pointer
Ans. 
Weak pointer is a type of smart pointer in C++ that does not control the lifetime of the object it points to.
• Weak pointers are used to break circular references in shared pointers.

• They do not increase the reference count of the object.

• They are used in scenarios where the object may be deleted while there are still weak pointers pointing to it.
Answered by AI
Add your answer
Q4. What are processes and threads memory is allocated to what process or threads? what is mutex and semaphore how many threads/process can you launch at a time what is meaning of core in 4-core system what is...read more
Ans. 
Processes and threads are units of execution in a computer system. Memory is allocated to processes. Mutex and semaphore are synchronization mechanisms. Core refers to a processing unit in a multi-core system. Context switching is the process of switching between different processes or threads.
• Processes are independent units of execution with their own memory space and resources.

• Threads are lightweight units of executi...read more
Answered by AI
Add your answer
Q5. What is this pointer tell me situation where only this pointer can be used nothing else will work
Add your answer

60 mins test which comprises of 2 sections, Technical and aptitude. Both sections have a time limit of 30 mins. The technical questions were easy to medium and i could finish it in time but i needed more time for finishing the aptitude, a total 40 questions.

Q1. Tell me about yourself
Ans. 
I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.
• Recent graduate with a degree in Computer Science

• Passionate about coding and problem-solving

• Experience with programming languages like Java, Python, and C++

• Completed internships at tech companies such as Google and Microsoft
Answered by AI
Add your answer
Q2. Find the voltage through the resistor
Ans. 
To find the voltage through a resistor, use Ohm's Law: V = I * R
• Use Ohm's Law: V = I * R, where V is the voltage, I is the current flowing through the resistor, and R is the resistance of the resistor

• If the current flowing through the resistor is 2A and the resistance is 5 ohms, the voltage would be V = 2 * 5 = 10V

• Make sure to use the correct units for current (Amps) and resistance (Ohms) to get the voltage in Volts
Answered by AI
Add your answer
Q3. The interviewer just kept on adding an extra resistor in parallel and in series to the resistor and asked me to find the voltage
Add your answer
Q4. He then asked a question on transient analysis ie 2 capacitors connected in series with a switch which closes at t>0 with the voltage across the 2 capacitors being 3 v and asked to find the total voltge
Add your answer
Q5. Explain the working of a capacitor and resistor and relation between resistance and length , area
Ans. 
Capacitors store electrical energy while resistors limit the flow of current. Resistance is directly proportional to length and inversely proportional to area.
• Capacitors store electrical energy by creating an electric field between two conductive plates separated by an insulating material

• Resistors limit the flow of current in a circuit by dissipating energy in the form of heat

• The resistance of a resistor is directly pr...read more
Answered by AI
Add your answer

Q1. How many elements are used in manufacturing of product
Add your answer
Q2. How Maine experience off manufacturing company
Add your answer

The interview included a basic coding exercise, followed by a CV screening and questions related to Object-Oriented Programming, such as how virtual functions are implemented by the compiler and how polymorphism operates.