Video engineer Interview Questions

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Spectrum
Advanced Video Engineer was asked...August 4, 2015

Whats the main difference between a DAC and DNCS

4 Answers

DAC - Digital addressable controller - This is the headend (media) component provided by arris (originally by Motorola). DNCS - Digital network control system - This is headend provided by Cisco (originally by Scientific Atlanta). These headend systems are responsible for managing STB's and subscriber database along with many other featured. Less

DAC - Digital addressable controller - This is the headend (media) component provided by arris (originally by Motorola). DNCS - Digital network control system - This is headend provided by Cisco (originally by Scientific Atlanta). These headend systems are responsible for managing STB's and subscriber database along with many other featured. Less

DAC - Digital addressable controller - This is the headend (media) component provided by arris (originally by Motorola). DNCS - Digital network control system - This is headend provided by Cisco (originally by Scientific Atlanta). These headend systems are responsible for managing STB's and subscriber database along with many other featured. Less

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NVIDIA

How would you implement int atoi ( const char * str );

3 Answers

I parsed the string from left to right, multiplying the temp int by 10 for each char traversed. Less

You need to subtract the ascii value of zero to get the integer value of the char before multiplying by 10. Less

#include #include unsigned int my_atoi(const char* str) { int num = 0; while (*str) { num *= 10; num += (*str++ - '0'); } return num; } int main(int argc, char* argv[]) { printf("atoi(%s)=%d\n",argv[1], my_atoi(argv[1]) ); return 0; } Less

Flipagram
Video Engineer was asked...September 11, 2014

I bombed the Android UI questions...

2 Answers

If you have any strengths, especially in narrow fields of knowledge, work it into the interview. Less

What type of question? Custom View? ListView (RecyclerView)?

WSP

Tell us about your work experience

1 Answers

Why do you want to work in this company ?

SolarCity

1. About the projects that you did. 2. If you need same database for 2 different applications how would you approach? 3. There are 10 stacks, each stack contains 10 bricks. Out of these 10 stacks.. one complete stack contains fake bricks and other 9 stacks has real bricks. Now when you take some collection of bricks (say 2 bricks from 1st stack, 3 from 4th stack, etc..) and weighing that collection of those picked bricks only once how would you identify which stack has fake bricks?? Note: Real bricks weighs 10 pounds and fake brick weighs 1 pound.

1 Answers

Take 1 brick from 1st stack 2 bricks from 2nd stack 3 from 3rd 4 from 4th 5 from 5th 6 from 6th. So now if I take only bricks from the above mentioned 6 stacks in the above said manner.. And when we weigh this collection what the weight should be? if all bricks are real - the weight will come to 210 pounds. if the weight is not 210 pounds then one of these stack has a fake brick. if the weight is 201 pounds then it means only 1 brick is fake. That means we have taken only one brick from 1st stack. So as we came to know that only 1 brick is fake, then that would be 1st stack. In the same way, if the weight is 192 pounds, then 2 bricks are fake. Which means the 2 bricks count is from 2nd stack. So 2nd stack is fake. and so on.. Less

Mozilla

What type of webacsting equipment have I used.

1 Answers

Varied types, osprey, black magic, trickster.

Amazon

Write a program to reverse endianness of bytes. Given 24hr to submit via email.

1 Answers

KNOW HOW TO CONVERT BETWEEN DECIMAL HEXADECIMAL AND BINARY!!

CDW

The technical interview questions were quite in depth. One question I recall as being quite difficult asked for the steps to perform a Cisco Unified Communications Manager upgrade from 7 to 8.6.

1 Answers

I didn't have a lot of CUCM experience so I didn't know the answer

NVIDIA

Describe how the producer-consumer problem works

1 Answers

We started a discussion of the producer consumer problem and how I would handle synchronization/concurrency issues when solving the problem. I understood the problem fairly well because I had just learned it, so I was able to correct the interviewer on several points (e.g. he only remembered that the consumer has to sleep if the buffer is empty, but not that the producer has to sleep if the buffer is full. Maybe he thought all buffers were infinite size?). Less

Intel Corporation

which is the best DS for implementing a dictionary of names? and why is it efficient

1 Answers

Trie data structure since it requires less memory when compared with hashtable.

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