Xperi Intern Interview Questions and Answers

Three coding questions and MCQ's

Q1. Live coding, mostly questions based on C pointers
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Q2. Types of Memory Allocations in C
Ans. 
Types of memory allocations in C include static, dynamic, and automatic.
• Static memory allocation: memory is allocated at compile time and remains constant throughout the program's execution. Example: int x = 5;

• Dynamic memory allocation: memory is allocated at runtime using functions like malloc() or calloc(). Example: int *ptr = (int*)malloc(sizeof(int));

• Automatic memory allocation: memory is allocated on the stack and...read more
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Q3. Pointers in C - Types of pointers
Ans. 
Pointers in C are variables that store memory addresses. Types include null pointers, void pointers, function pointers, etc.
• Null pointers: int *ptr = NULL;

• Void pointers: void *ptr;

• Function pointers: int (*ptr)(int, int);
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The questions consisted of aptitude and since iam from cs, cs core subjects.

Q1. The interview was of 30 min. It started off with introducing ourselves and getting into projects. And core questions along with dsa .
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Q2. What is threading, how many threads a process contains?
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Q1. Tell me about your research.
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Q2. Probability of 2 rvs added.
Ans. 
The probability of 2 random variables added together.
• The sum of two independent random variables is the convolution of their probability distributions.

• The probability distribution of the sum of two random variables is the convolution of their probability distributions.

• The mean of the sum of two random variables is the sum of their means.

• The variance of the sum of two random variables is the sum of their variances.
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Based on talent retention

Q1. Questions About self and motivations
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Q2. Questions on how to go on to solve the case study
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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
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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
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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
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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
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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
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Basic EE, Aptitude and reasoning Questions. Focused on Analog and Digital

Q1. Solving a RC network circuit which further evolved into more complex network
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Q2. Explain the Projects on resume
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Genreal apptitude questions

Q1. Difference between latch and flipflop
Ans. 
Latch is level triggered, while flip-flop is edge triggered. Latch is asynchronous, while flip-flop is synchronous.
• Latch is level triggered, meaning it changes output when the input signal is high or low continuously.

• Flip-flop is edge triggered, meaning it changes output only on the rising or falling edge of the clock signal.

• Latch is asynchronous, meaning the output changes as soon as the input changes.

• Flip-flop is syn...read more
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Basic questions in electroics, digital and analog

Q1. Basic to tough questions on opamp
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Q2. Basic to tough RC circuit questions
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