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Robert Bosch (RBEI) Interview Experience - Hubli, July 16, 2015

Consists of 3 rounds: 

Online test, Technical Interview, HR Interview.

The online test was easy. Total 60 questions , time limit was 60 minutes. Negative marking of -0.25 for each wrong answer. 25 aptitude questions and 35 Technical questions
Negative Marking wherein 0.25 mark will be deducted for each of the wrong  answers.[So think twice before you answer]

These were the questions asked to me during technical interview:

About yourself, Brief explanation of projects, your contribution.

Block diagram of 8051.
Differences between microprocessor and micro controller.
What is DPTR, SCON ? Use of DPTR.
What is the size of address lines and data lines in 8051?
How interrupts work in 8051? how many interrupts are present ?what happens if two interrupts occur at the same time? What is priority? Which interrupt has highest priority ?
What is Program counter?
Differences between RAM and ROM.
What is volatile memory?
What is trap?

Differences between macros and functions. Applications of each of them.
What is 2D array in C? syntax?(say a[2][3]={0,1,2,3,4,5}    ), what will the output for a[2][0] ? What is a in the above example? What is a[0] ?
What is pointer to pointer? Difference between pointer and pointer to pointer?
What are storage classes in c?
What is the difference between static and global variables ? Applications of static variables.

What are encoders, decoders and mux?
What will be the output of MUX, if you connect output of encoder to the select lines of MUX?(can take eg. to explain.)
Difference between synchronous and asynchronous ?
What is positive edge triggered and negative edge triggered?
SR latch logic diagram, working ? Gated SR latch ? What modifications have to be made to get output when clock goes high to low?
What is sampling? Where it is used ?

Four prisoners are arrested for a crime, but the jail is full and the jailer has nowhere to put them. He eventually comes up with the solution of giving them a puzzle so if they succeed they can go free but if they fail they are executed. The jailer puts three of the men sitting in a line facing same direction. The fourth man is put behind a screen (or in a separate room). He gives all four men party hats .The jailer explains that there are two red and two blue hats. The prisoners can see the hats in front of them but not on themselves or behind. The fourth man behind the screen can't see or be seen by any other prisoner. No communication between the men is allowed. If any prisoner can figure out and say (out loud) to the jailer which colored hat he has on his head all four prisoners go free. The puzzle is to find how the prisoners can escape.

Draw  a square inside circle. Find ratio of area of square to that of area of circle.(radius of circle given).

HR round: About yourself, family background, interests, strengths, study related future plans ?

If you don't know the answer to any question at least explain your thinking process and methodology , sometimes the process of thinking is checked more than the accurate answer.

I got Placed ...!!! "Confident & Coolness is all required "   All the Best... :) :).


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