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Interview Questions and Answers :: Cavium Networks

Home > Experience Archives > Cavium Networks > Interview Question Set 1
Telephonic Round First Round (F-2-F) Second Round (F-2-F) Third Round (F-2-F)
  • 1. Introduce yourself.
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  • 2. And briefly about the project and role in that.
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  • 3. What is VRF.
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  • 4. What is private vlan.
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    A private VLAN domain has only one primary VLAN. Each port in a private VLAN domain is a member of the primary VLAN; the primary VLAN is the entire private VLAN domain.

    Secondary VLANs provide isolation between ports within the same private VLAN domain. The following two types are secondary VLANs within a primary VLAN:

    Isolated VLANs—Ports within an isolated VLAN cannot communicate directly with each other at the Layer 2 level.
    Community VLANs—Ports within a community VLAN can communicate with each other but cannot communicate with ports in other community VLANs or in any isolated VLANs at the Layer 2 level.

    http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/configuration/guide/cli/CLIConfigurationGuide/PrivateVLANs.html
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  • 5. What is lacp.
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  • 6. What happen if mtu size is set as 1200 for interface and pkt received > 1200.
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  • 7. What is vlan. What is tagged and untagged vlan.
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  • 8. Ping from host A to host B, there are intermediate router. Explain each step taken to successful ping.
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  • 9. How you will debug in above scenario.
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  • 10. What is TTL in pkt. what if ttl will be in L2 header?
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  • 11. Can you design the ola cab application. In this just tell you understanding.
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  • 12. puzzel .. There are 100 doors, all closed. In a nearby cage are 100 monkeys.
    The first monkey is let out, and runs along the doors opening every one. The second monkey is then let out, and runs along the doors closing the 2nd, 4th, 6th,... all the even-numbered doors. The third monkey is let out. He attends only to the 3rd, 6th, 9th,... doors (every third door, in other words), closing any that is open and opening any that is closed, and so on. After all 100 monkeys have done their work in this way, what state are the doors in after the last pass, which doors are left open and which are closed?
  • Answer:

    Consider door number 56, monkeys will visit it for every divisor it has. So 56 has 1

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  • 13. Difference in pointer to function and function pointer.
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  • 14. How to analyze the core dump.
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  • 15. How L2 table maintain.
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  • 16. Do you have any question?
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Telephonic Round First Round (F-2-F) Second Round (F-2-F) Third Round (F-2-F) Telephonic Round First Round (F-2-F) Second Round (F-2-F) Third Round (F-2-F)
  • 1. About the project.
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  • 2. Write a program to find and remove the duplicate in linklist.
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  • 3. Write a program to compare the string.
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  • 4. What is difference in memcpy and strncpy.
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  • 5. What is the difference in pass by value and pass be reference, with example.
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  • 6. Write any program using function pointer
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  • 7. Write a program to print the matrix element in clock-wise and anti clock-wise sprial, if the given value of i=0 and i=1
    Ex.
    | 1 2 3 4 |
    | 5 6 7 8 |
    | 9 10 11 12 |
    | 13 14 15 16 |
    OutPut:
    For i=0
    1 2 3 4 8 12 16 15 14 12 9 5 6 7 11 10
    for i=1
    1 5 9 13 14 15 16 12 8 4 3 2 6 10 11 7
  • Answer:
    void ClockwisespiralPrint(arr[4][4], int m, int n)
    {
    int i = 0, k = 0, l = 0;

    while (k < m && l < n)
    {
    for (i = l; i < n; ++i)
    {
    printf(" %d ", arr[k][i]);
    }
    k++;

    for (i = k; i < m; ++i)
    {
    printf(" %d ", arr[i][n-1]);
    }
    n--;

    if ( k < m)
    {
    for (i = n-1; i >= l; --i)
    {
    printf(" %d ", arr[m-1][i]);
    }
    m--;
    }

    if (l < n)
    {
    for (i = m-1; i >= k; --i)
    {
    printf(" %d ", arr[i][l]);
    }
    l++;
    }
    }
    }


    int main()
    {
    int arr[4][4] = {
    {1, 2, 3, 4},
    {5, 6, 7, 8},
    {9, 10, 11, 12},
    {13, 14, 15, 16}
    };

    ClockwisespiralPrint(arr, 4, 4);
    return 0;
    }


    For anti-clockwise reverse the operation;
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  • 8. How interface vlan work .
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  • 9. What is lacp, and lacp state machine.
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  • 10. Write a program to find machine is little endian or big endian.
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  • 11. Byte swapping program.
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Telephonic Round First Round (F-2-F) Second Round (F-2-F) Third Round (F-2-F)