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Interview Questions and Answers :: Wipro

Home > Experience Archives > Wipro > Interview Question Set 1
First Round (F-2-F) Second Round (F-2-F) HR Round
    Question :: 1
    Introduce yourself briefly.

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    Question :: 2
    How ping works.which protocol used in it.

    Answer:

    PING is standard for Pocket internet grouper.



    PING command is used a simple way to verify to that computer can communicate over another network or computer.



    PING is used ICMP (Internet control message protocol), This protocol is verified communication ECHO Request and ECHO response technology.



     

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    Question :: 3
    What is NAT.

    Answer:

     Network Address Translate is Called NAT.



    Firewall used to assign private networks to public networks, NAT used to assign limited of public networks based on economy or security.

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    Question :: 4
    Write a program to reverse a number, input 12345 output 54321.

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    Question :: 5
    Write a program to find the loop in a single linklist.

    Answer:
    /* pass the head reference to detectLoop */
    int detectLoop(struct node *list)
    {
    struct node *slowp = list, *fastp = list;

    while (slowp && fastp && fastp->next)
    {
    slowp = slowp->next;
    fastp = fastp->next->next;
    if (slow_p == fast_p)
    {
    printf("\r\nLoop detected in given linked list.\r\n");
    return 1;
    }
    }
    return 0;
    }
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    Question :: 6
    Now Modify your program to remove the loop in same linklst.

    Answer:
    /* pass the head reference to detectLoop */
    int detectLoop(struct node *list)
    {
    struct node *slowp = list, *fastp = list;

    while (slowp && fastp && fastp->next)
    {
    slowp = slowp->next;
    fastp = fastp->next->next;
    if (slow_p == fast_p)
    {
    printf("\r\n Loop detected in given linked list.\r\n");
    removeloop(slowp, list);
    return 1;
    }
    }
    return 0;
    }

    void removeLoop(struct node *slow_node, struct node *head)
    {
    struct node *ptr1;
    struct node *ptr2;

    ptr1 = head;
    while (1)
    {
    ptr2 = loop_node;
    while (ptr2->next != loop_node && ptr2->next != ptr1)
    ptr2 = ptr2->next;
    if (ptr2->next == ptr1)
    break;

    ptr1 = ptr1->next;
    }
    ptr2->next = NULL;
    }
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    Question :: 7
    What is dangling pointer. So As per him in question 6 it will occurred

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    Question :: 8
    What is deadlock.

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    Question :: 9
    Write a program in which deadlock created. there were two question ...

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    Question :: 10
    Write a program to delete a node in double linklist if info match.

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    Question :: 11
    what are the procedure to allocate the memory dynamically in c.

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    Question :: 12
    what are the difference in malloc, calloc and realloc.

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    Question :: 13
    what are the scheduling technique available.

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    Question :: 14
    What are the interprocess communication available.

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    Question :: 15
    In pipe IPC, whether first pipe get terminated or still in BG.

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    Question :: 16
    what is shell.

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    Question :: 17
    How to protect the shared memory.

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    Question :: 18
    Do you know the GDB. Where it will be used. how you will load.

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    Question :: 19
    How you will have the core dump, what are all the information you will get it, how you will debug it.

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    Question :: 20
    Do you know chunk file.

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    Question :: 21
    what is fork(). what fork will return, whether parent will run first or child when you will do fork.

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    Question :: 22
    What is NULL pointer.

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    Question :: 23
    What is void pointer.

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    Question :: 24
    Can you write a generic single linklist program using void.

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    Question :: 25
    JUMP, breakpoints, next,continue etc. in GDB, what is and how to use it.

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    Question :: 26
    Do you know the socket programming, Write a simple client/server program.

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    Question :: 27
    What are the call will be in UDP.

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    Question :: 28
    How TCP handshake will be happen.

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    Question :: 29
    What is fragmentation in IP packet. Then what is it in OS context.

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    Question :: 30
    What is priority inversion.

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    Question :: 31
    What is ARP, what are the filed in ARP table ,how it will updated.

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First Round (F-2-F) Second Round (F-2-F) HR Round First Round (F-2-F) Second Round (F-2-F) HR Round