C DOT Interview Questions, Process, and Tips

Virtual interview after shortlisted
1-2 Med level coding qn approach and implementation

Q1. Qn related to Project i worked
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Q2. Qn related techstacks i were used in the project and why i choose that techstack etc.
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Q1. Normal Behavioral qns
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Q1. Function overloading, Question related with pointers in c input output
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Q2. Memory layout in c program
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Memory layout in C program refers to how variables are stored in memory.
• Variables are stored in memory in a specific order based on their data types and sizes.

• Local variables are typically stored on the stack, while dynamically allocated memory is stored on the heap.

• Memory layout also includes the concept of memory alignment to optimize memory access.

• Example: int x; char c; double d; will be stored in memory as x -> c
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Q3. Os virtual memory
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Q1. JK FF diagram and state table
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Q2. Resistor color coding, pipelining
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Q3. Few projects related
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Q4. Fan-in, Fan-out, understanding of microcontroller
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Q1. Basic Analog and digital electronics questions, PLL , SHD reciever
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Q2. What is difference between latch and flip flop?
Ans. 
Latch is level triggered and flip flop is edge triggered. Flip flop has clock input while latch does not.
• Latch is level triggered, while flip flop is edge triggered

• Flip flop has a clock input, while latch does not

• Latch is asynchronous, while flip flop is synchronous

• Flip flop stores data in two stable states (0 or 1), while latch stores data in one stable state

• Examples: SR latch, D flip flop
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Q3. How to remove Metastable problem ?
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Metastable problem can be removed by carefully designing the system to prevent sudden changes in input signals.
• Ensure proper grounding and shielding to minimize external interference.

• Use filtering techniques to remove noise from input signals.

• Implement hysteresis in the system to prevent rapid switching between states.

• Calibrate sensors and components regularly to maintain accuracy.

• Utilize feedback control systems to st...read more
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Q1. About FPGA, Digital electronics , Metastable,
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Q1. Technical questions stemmed initially from projects mentioned in CV, and follow up questions thereafter. Mostly based on communications (ISI, OFDM), EM theory, control system basics, digital electronics, s...read more
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