HCL Networking Interview Questions Answers for Experience

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First Round (Webex) Second Round (Webex)

1 / 19

Write a macro to find maximum of two numbers. enhance it for 3 numbers.

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2 / 19

Debugging command to add breakpoint.

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3 / 19

How to debug a thread in gdb.

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4 / 19

How to attach a core file in gdb.

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5 / 19

What is priority inversion ? explain.

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6 / 19

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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7 / 19

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

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8 / 19

Write a program to delete a node in a Linked list.

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9 / 19

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

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10 / 19

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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11 / 19

Port numbers used for SNMP. What it inform?

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12 / 19

Difference in SNMP v2 trap and v1 trap.

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13 / 19

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

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14 / 19

How the Multicast Mac address is mapped from multicast IP address.

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15 / 19

How are the control packets identified?

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16 / 19

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

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17 / 19

Use of Volatile keyword?

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18 / 19

How a multicast communication happen?

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19 / 19

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

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First Round (Webex) Second Round (Webex)

1 / 13

Write your own strtok program in c.

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2 / 13

Write stack overflow program in c.

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3 / 13

Write a program in c,where memory leak happen.

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4 / 13

Find the middle node in circular linklist.

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5 / 13

Write your own strncpy program in c.

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6 / 13

Difference in mutex and semaphore.

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7 / 13

marco as variable argument.

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8 / 13

Write a prototype of function pointer. use of it.

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9 / 13

What is pointer to array and array to pointer. write a program for same.

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10 / 13

Use of register Keyword. Can it be declared globally.

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11 / 13

Can a Macro be declared with variable arguments ? if so How?

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12 / 13

Can a Nested function be declared? How?

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13 / 13

Can a Macro with a goto statement and a label be defined? If so, what happens, if the same macro is called repeatedly thrice?

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HCL Networking Interview Questions Answers for Experience

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