TCS Interview Questions and Answers for 3 years Experience

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1 / 18

Briefly introduce yourself and about current project.

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2 / 18

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

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3 / 18

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

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4 / 18

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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5 / 18

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

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6 / 18

Do you know LACP. What is difference in LACP/LAG.

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7 / 18

Can you tell me how link aggregation mention in Broadcom.

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8 / 18

What are the type of IPC used in your project?

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9 / 18

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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10 / 18

Can you tell me process memory layout in linux.

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11 / 18

How do u rate yourself in c in scale of 5.

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12 / 18

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

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13 / 18

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

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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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14 / 18

Can you give example of stack overflow, another example then calling main function inside main().

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

Another

void main()
{
stackOver();
}

void stackOver ();
{
stackOver ();
}

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15 / 18

Have you used call back function, what will be the prototype of it.

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16 / 18

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

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Answer:
int * (* arroffunctionpointer [10 ] ) (arg1, arg2)

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17 / 18

What is dangling pointer.

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

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18 / 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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TCS Interview Questions and Answers for 3 years Experience

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