Hardware / Microprocessor Interview Questions
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Hardware and software design questions
- What is Finite Automata
- What is a Turing machine?
- How many processors are there in a pentium microprocessor? In Sparc?
- Difference between RISC and CISC
- Is RISC always fast?
- What is a real time system?
- Name some real time OSs.
- Is DOS a real time OS?
- What is a kernel,shell?
- What is binary search, traversal, hashing?
- Write a code to count the no. of 1’s in a binary representation of a number.
- Memory taken for char *, int * etc.
-
char *cp; int *ip; cp++; ip++;
What is the result?
RF and radio engineering interview questions
- What’s a PCB? Printed Circuit Board.
- Name some band definitions. L-Band - 1-2 GHz, S-Band - 2-4 GHz, C-Band - 4-8 GHz, X-Band - 8-12 GHz, Ku-Band - 12-18 GHz.
- What’s the definition of gain? The signal going into the device is smaller than the signal going out.
- What’s a definition of an amplifier? It’s a device that exhibits gain.
- Insertion loss? The signal going in is greater than the signal that’s coming out.
- Thermal impedance? A measure of how hot the device gets with varying electrical input.
RF and radio engineering interview questions II
- Describe circular polarization. The signal travels both vertically and horizontally.
- What’s the job of the amplifier? To increase the incoming signal.
- What is noise figure? The level of noise that a low-noise amplifier (LNA) is capable of discriminating.
- What’s a transfer curve? It is a graph of the output power versus the input power of an amplifier.
- What’s the 911 point? The point where the input power results in flames on the other end.
- What’s saturation point? The point where the amplifier loses its linearity of the transfer curve.
Computer architecture and design interview questions
- What is pipelining?
- What are the five stages in a DLX pipeline?
- For a pipeline with ‘n’ stages, what’s the ideal throughput? What prevents us from achieving this ideal throughput?
- What are the different hazards? How do you avoid them?
- Instead of just 5-8 pipe stages why not have, say, a pipeline with 50 pipe stages?
- What are Branch Prediction and Branch Target Buffers?
- How do you handle precise exceptions or interrupts?
- What is a cache?
- What’s the difference between Write-Through and Write-Back Caches? Explain advantages and disadvantages of each.
Embedded systems interview questions
- Can structures be passed to the functions by value?
- Why cannot arrays be passed by values to functions?
- Advantages and disadvantages of using macro and inline functions?
- What happens when recursion functions are declared inline?
- Scope of static variables?
- Difference between object oriented and object based languages?
- Multiple inheritance - objects contain howmany multiply inherited ancestor?
- What are the 4 different types of inheritance relationship?
- How would you find out the no of instance of a class?
- Is java a pure object oriented language? Why?
