Qualcomm Interview Questions & Reviews

Interview Details It has four rounds of interview. To begin with we had a written test and then a technical interview. Followed by a Hr interview. After the internship we also had a exit hr interview.

Interview Details Telephone interview for 30 mins and then onsite interview of about 5 rounds
Questions:
srns relocation procedure
what are the ranges of uplink and downlink frequencies in gsm? which is higher and which is lower? reasons why higher?
why Qpsk is used in cdma? why gmsk is used in gsm?
waveform of gmsk? properties of gmsk? how to generate gmsk
dpcm and delta modulation differences
Authentication procedures between Ms sgsn and hlr
ofdm basics - why ofdm? interleaving? disadvantages and advantages of ofdm. PAPR reduction techniques
sampling theorem related questions - nyquist rate
result of convolution of two sine waves of different frequencies
quantization related questions
Rayleigh and ricean fading differences
Maximum number of pdp contexts per subscriber
Integration and cyphering keys usage
Explain Paging of MS
functions of rnc
fields in ms network capability part in gmm attach message
messages involved in basic attach procedure

reversing a singly linked list using one temporary variable without recursion
easy way to multiply a number by 7
given x, program to count number of set bits in all number upto x
count number of set bits in a number
write a program for binary search tree
write a program to sort numbers using selection sort
questions related to malloc and calloc
how to delete a particular node in a singly linked list if the address of the node to be deleted is the only thing we know
what is memory leak
what is dangling pointer
difference between enum and costant
data type of enum
static and global variables related questions
difference between local static and global static variables
what is deadlock? causes? ways to avoid
page replacement in memory
mutex semaphore concepts
process control block related questions
scheduling a process
scheduling algorithms
what is message passing and how to synchonize concurrently running processes
cache memory/virtual memory related questions

how to cut a random piece of cake into two equal halves
building with n floor. find the floor of least height where a pane of glass breaks when dropped, in minimum number of attempts
derive the formula to find volume of a pyramid,cylinder
what is probability? sample size? probability related mathematical question
circuits related - draw and gate,or gate, xor gate
2s compliment of a number
bcd addition related

Negotiation Details – Not given a chance to negotiate !!

Interview Details It was an on-campus recruitment drive and there was an online written test followed by two technical and one HR interview a week after the test results were out.
The written test consisted of three sections: Quantitative Aptitude, Programming, VLSI/Communication. I appeared for the job in VLSI domain. There are basic questions asked in VLSI from Verilog,Digital Circuits, Microprocessor and programming questions included just finding the output for simple programs involving loops and selecting the correct implementation of a code,questions are not language specific, they are written in terms of algorithms. Quantitative Aptitude is also very simple.
There were two technical interviews. In my first intterview questions were basically targeted at CMOS Devices and my projects that i had done during my B.Tech.
In the second round of interiew questions were about digital system design(front end) and he also asked a few puzzles just to check the approach for tackling the question
In the last round, just salary details were mentioned to me and i got selected.

Negotiation Details – Keep the basics of digital circuits prepared and try to be talkative during the course of interview and try to tell them what approach you are following while tackling a question.

Interview Details After the resume was referred by one of the employees, got a call from the HR after 2 to 3 months. A telephonic discussion was setup and the hiring manager explained about the position and tried to understand my areas of expertise.
After the telephonic discussion was cleared, on-site interview was scheduled and there were 3 technical interviews with peers of hiring manager. Finally there was a discussion with the hiring manager and also with the group VP.

Interview Details Clear and Highly Detail Oriented. They check the concepts.

Negotiation Details – They matched my expectations

Interview Details A telephonic interview followed by an interview onsite. Interview lasted the whole day. There were about 5 rounds of interview followed by a meeting with team manager and HR. They try to see how you do over the day and decide based on consensus of the whole team at the end of day.

Negotiation Details – I accepted what they offered. They are the best pay masters in our domain as far as I know.

Interview Details face to face interview 4 rounds followed by 2 HR rounds

Interview Details 3 steps: Written Exam(Logical, Programming basics, Technical)

Interview Details Phone interview, followed by 3 rounds of interview face-to-face.

Questions on C
(check on naunces of C like alignments/pointers)
Data Structures: Linked Lists questions

Operating Systems : Process interactions/scheduling/race conditions/deadlocks etc.
Re-entrant code, interrupts, synchronication

Design round questions: Not be tough, look for hints given by interviewer to build on.

Negotiation Details – Not much to negotiate in Pay or Stocks. You can however ask and negotiate for High Joining Bonus(dont be conservative and ask more).