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Home > Experience Archives > HCL Technologies > Interview Question Set 5
Telephonic Round

    1 / 16

    First question was about yourself and Project discussion.

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    2 / 16

    How mac-learning happen, i.e. ping Host-1 to Host-2, where both Host connected to switch and

    (A) Both host are in same subnet.
    topology

    (B) When both host are in different subnet.
    topology

    Answer:

    Option: A

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    3 / 16

    What is LACP, What is difference between LACP & LAG.

    Answer:

    Link Aggregation Control Protocol. Within the IEEE Ethernet standards, the Link Aggregation Control Protocol (LACP) provides a method to control the bundling of several physical links together to form a single logical link.

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    4 / 16

    How would mac learning happened for LACP port?

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    5 / 16

    How load balancing happen in LAG? Suppose 3 ports are in LAG, How does it decide, by which port this pkt should will be egressed. Does it pre-decided that or does it make some calculations decide.

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    6 / 16

    Which mac-address will be assigned to ports in LACP bundle ports?

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    7 / 16

    Will mac-address table have entry for LAG's mac or its ports mac? Have you seen the mac-address table that what are the information it contain.

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    8 / 16

    What are the mac-address will be learned for LACP.

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    9 / 16

    What is the use of marker in LACP, Does it required, if so than how it help.

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    10 / 16

    What happen in the scenario, when lowest port get down, what are the changes will LAG have? Does mac-address re-assign to all remaining ports.What are the changes will be happened in mac table.

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    11 / 16

    Previous question continue, if new mac-address assign to other ports than does re-learning again happened.

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    12 / 16

    Explain LAG in HA scenario, where mac-address learning will be happen (active/standby card) when pkt received at standby card port.

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    13 / 16

    What is major difference between STP and RSTP?

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    14 / 16

    Have you fixed any challenging bug, and what is it.

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    15 / 16

    Do you have individually develop any new feature?

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    16 / 16

    Do you have any question for me?

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