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Interview Questions and Answers :: HCL Technologies

Home > Experience Archives > HCL Technologies > Interview Question Set 4
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    Question :: 1
    Write a macro to find maximum of two numbers. enhance it for 3 numbers.

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    Question :: 2
    Debugging command to add breakpoint.

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    Question :: 3
    How to debug a thread in gdb.

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    Question :: 4
    How to attach a core file in gdb.

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    Question :: 5
    What is priority inversion ? explain.

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    Question :: 6
    Tasks A,B,C are having priorities 100, 200, 255 respectively. Task C is holding a semaphore. Assuming priority inheritance is in place, if Task C wants a resource held by Task B, will it get the resource? if so what would be the priority of each task for that to be achieved. If not why?

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    Question :: 7
    How will free know how many bytes of memory to be freed? How is the sanity check implemented.

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    Question :: 8
    Write a program to delete a node in a Linked list.

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    Question :: 9
    Explain the timer library implementation, for a granularity of 1 sec given the efficiency should be only by time.

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    Question :: 10
    How will the interface number on which the response has to be sent is known to the SNMP Agent once it needs to send a reply?

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    Question :: 11
    Port numbers used for SNMP. What it inform?

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    Question :: 12
    Difference in SNMP v2 trap and v1 trap.

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    Question :: 13
    Questions related to VLAN, STP, RSTP, MSTP, LAG, ACL as discussed above in other companies.

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    Question :: 14
    How the Multicast Mac address is mapped from multicast IP address.

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    Question :: 15
    How are the control packets identified?

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    Question :: 16
    Ether type of VLAN, and QinQ. What is QinQ used for.

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    Question :: 17
    Use of Volatile keyword?

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    Question :: 18
    How a multicast communication happen?

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    Question :: 19
    Declare a function pointer. What is the difference between (void *func)() and void (*func)().

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