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Interview Questions and Answers :: TCS

Home > Experience Archives > TCS > Interview Question Set 1
Telephonic Round
    Question :: 1
    Briefly introduce yourself and about current project.

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    Question :: 2
    Lets we have topology where host is moving (mac), so how we can manage and control it.

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    Question :: 3
    While implementing the feature what are the basic issue you faced, and how you resolve it.

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    Question :: 4
    If in mac address table mac entry for host A is exist as both static and dynamic, what will happen when pkt will receive at switch. Have you observed such scenario?

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    Question :: 5
    What all are the step will performed when switch received first pkt from Host A.

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    Question :: 6
    Do you know LACP. What is difference in LACP/LAG.

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    Question :: 7
    Can you tell me how link aggregation mention in Broadcom.

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    Question :: 8
    What are the type of IPC used in your project?

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    Question :: 9
    How to create message queue, what are the field will be required. Then how to protect. Can we not achieve it by pipe.

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    Question :: 10
    Can you tell me process memory layout in linux.

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    Question :: 11
    How do u rate yourself in c in scale of 5.

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    Question :: 12
    Which one is efficient in 2D array or array of pointer.

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    Question :: 13
    Can you just tell how to write Const char pointer. If I want to have const data.

    Answer:
    It will point to constant address
    Char * const tmp = 'h';
    I.e if we do char c = 'k';
    tmp= &c; (throw error)
    But we can change the tmp value

    To have constant data

    Const char *tmp='k';
    Or
    Char const *tmp='k';
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    Question :: 14
    Can you give example of stack overflow, another example then calling main function inside main().

    Answer:
    Stack overflow
    ###########
    void main()
    {
    main();
    }

    Another

    void main()
    {
    stackOver();
    }

    void stackOver ();
    {
    stackOver ();
    }
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    Question :: 15
    Have you used call back function, what will be the prototype of it.

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    Question :: 16
    Can you just tell me how to write Array of function pointer returning int pointer.

    Answer:
    int * (* arroffunctionpointer [10 ] ) (arg1, arg2)
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    Question :: 17
    What is dangling pointer.

    Answer:

    Dangling pointer is the pointer which points to invalid memory location.


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    Question :: 18
    If ptr is pointer and pointing to some memory, doing ptr++ five time and then freeing the ptr what will be the issue here.

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