Interview exam for B.Tech electronics and Communication

Provide me some important question for interview examination during placement for B.Tech electronics and Communication engineering course ?

[Quick Sam]

Here I am giving you some important question for interview examination during placement for B.Tech electronics and Communication engineering course .

Interview questions :
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?
Order of constructor and destructor call in case of multiple inheritance?
Can u have inline virtual functions in a class?
When you inherit a class using private keyword which members of base class are visible to the derived class?
What is the output of printf("\nab\bcd\ref"); -> ef
#define cat(x,y) x##y concatenates x to y. But cat(cat(1,2),3) does not expand but gives preprocessor warning. Why?
Can you have constant volatile variable? Yes, you can have a volatile pointer?
++*ip increments what? it increments what ip points to
Operations involving unsigned and signed — unsigned will be converted to signed
a+++b -> (a++)+b
malloc(sizeof(0)) will return — valid pointer
main() {fork();fork();fork();printf("hello world"); } — will print 8 times.
Array of pts to functions — void (*fptr[10])()
Which way of writing infinite loops is more efficient than others? there are 3ways.
# error — what it does?
How is function itoa() written?
Who to know wether systemuses big endian or little endian format and how to convert among them?
What is interrupt latency?
What is forward reference w.r.t. pointers in c?
How is generic list manipulation function written which accepts elements of any kind?
What is the difference between hard real-time and soft real-time OS?
What is interrupt latency? How can you recuce it?
What is the differnce between embedded systems and the system in which rtos is running?
How can you define a structure with bit field members?
What are the features different in pSOS and vxWorks?
How do you write a function which takes 2 arguments - a byte and a field in the byte and returns the value of the field in that byte?
What are the different storage classes in C?
What are the different qualifiers in C?
What are the different BSD and SVR4 communication mechanisms

1. What is the difference between a latch and a flip flop. For the same input, how would the output look for a latch and for a flip-flop.

2. Finite state machines:

(2.1)Design a state-machine (or draw a state-diagram) to give an output '1' when the # of A's are even and # of B's are odd. The input is in the form of a serial-stream (one-bit per clock cycle). The inputs could be of the type A, B or C. At any given clock cycle, the output is a '1', provided the # of A's are even and # of B's are odd. At any given clock cycle, the output is a '0', if the above condition is not satisfied.

(2.2). To detect the sequence "abca" when the inputs can be a b c d.
3. minimize a boolean expression.
4. Draw transistor level nand gate.
5. Draw the cross-section of a CMOS inverter.
6. Deriving the vectors for the stuck at 0 and stuck at 1 faults.
7. Given a boolean expression he asked me to implement just with muxes but nothing else.
8. Draw Id Vds curves for mosfets and explain different regions.
9. Given the transfer characteristics of a black box draw the circuit for the black box.
10. Given a circuit and its inputs draw the outputs exact to the timing.
11. Given an inverter with a particular timing derive an inverter using the previous one but with the required timing other than the previous one.
12. Change the rise time and fall time of a given circuit by not changing the transistor sizes but by using current mirrors.
13. Some problems on clamping diodes.