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Interview Questions and Answers :: NEC Technologies

Home > Experience Archives > NEC Technologies > Interview Question Set 1
Telephonic Round
    Question :: 1
    Can you introduce you self, covering what all are the project you have done, and what was your contributions in it?

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    Question :: 2
    Can you give brief idea about LACP state machine?

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    Question :: 3
    We have scenario like, 3 ports are part of port-channel, and one port in that goes down, so how the underlying protocol come to know

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    Question :: 4
    Which link has gone down, and how the load balancing happen at remaining two link.

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    Question :: 5
    What are the types of pdu used in LACP.

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    Question :: 6
    Can you tell the header for PDU.

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    Question :: 7
    How marker and control pdu differentiate.

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    Question :: 8
    We have scenario like at one switch lacp is supported and at another switch it doesn't, so can we bundle the ports in port channel if so then how if not then why not.

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    Question :: 9
    What advantage and disadvantage we have in the scenario where we have created bridge insted of port-channel. (3 ports are its part).

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    Question :: 10
    What is bridge, can you tell us the functionality of it. (There were some more question related to LACP and bridge, currently I am not able to re-call it.)

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    Question :: 11
    What is STP and can u tell how it works.

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    Question :: 12
    What is intension of resolving the loop , what impact will be if it will be.

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    Question :: 13
    What are the ports types in STP.

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    Question :: 14
    There is scenario, we attached one host< laptop> to switch,, what type of PDU will be transmitted once we connected the host to switch.

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    Question :: 15
    What all are the type of pdu in terms of STP.

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    Question :: 16
    at what interval pdu exchange between switches.

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    Question :: 17
    What is basic difference in STP and RSTP. Also what will be change in pdu of STP and RSTP.

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    Question :: 18
    What is PVSTP.

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    Question :: 19
    Can you name some IPC mechanism?

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    Question :: 20
    Suppose i have to communicate with one machine to another machine, can we use pipe for it, if not the why, if so then how.

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    Question :: 21
    Can you tell the procedure for creating the socket< client/server>?

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    Question :: 22
    What is purpose of using the bind? What are the argument we pass.

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    Question :: 23
    When TCP connection establish, at server side we define the port no X, and at client we define at port no Y, so will it work or.

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    Question :: 24
    What is pthread. What kind of library you have used for pthread.

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    Question :: 25
    When we create the thread what all thing will shared.

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    Question :: 26
    What is difference in mutex and binary semaphore?

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