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unknown Interview Question for Software Engineer / Developers






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Setup a NFS Server on the machine which has the large file.Create a exports file with all the 1000 machines and mount it on all the machines.

- krannycool March 11, 2011 | Flag Reply
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so, what you said is to put the file on a network drive? :P

- Anonymous March 11, 2011 | Flag
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Yes, the actual question was:

How to copy a very large file (let's say 10 TB) to 1000 computers within the same network in a timely and efficient way?

- montegobay March 11, 2011 | Flag
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Use UDP mutlicast

- gago March 12, 2011 | Flag Reply
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>> montegobay,
I mean "How to copy a very large file (let's say 10 TB) to 1000 computers within the same network in a timely and efficient way?" is solved by multicasting (IGMP protocol)
while
"Best way to share a large file to 1000 computers in the same network." is completely different story.
It seems you did not understand the question correctly during the interview.

- gago March 12, 2011 | Flag
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The interviewer was not looking for a one-word answer, but how you think thru a problem.

My answer was that we had the same problem is sharing a large SDK file at the last minute at a conference, and how we split up the work.

So, what is the algorithm behind UDP? What are the limits? Is it the ideal fit for this problem?

- montegobay March 15, 2011 | Flag Reply
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Having just read more on UPD and IP multicast, Gago's solution may not work since it requires routers and switches to do the caching / buffering of the data. Now I understand why the interviewer specified it had to be in the same LAN.

Looking for alternative ideas...

- montegobay March 15, 2011 | Flag Reply


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