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Interview Questions and Answers :: HCL Technologies

Home > Experience Archives > HCL Technologies > Interview Question Set 4

Accenture Adobe Alcatel-Lucent Alten Calsoft Lab Amazon Amdocs Aricent Arris Broadcom Ltd Brocade CA Technologies Cavium Networks Ciena Cisco Citrix Cognizant Deloitte EFI Ericsson Extreme Network Genpact Global Edge GlobalLogic Happiest Minds HCL Technologies Hewlett Packard Enterprise Incedo Infinite C S IpInfusion ISD Infotech J.P. Morgan Juniper Network L&T Technology Services MosChip Semiconductor NEC Technologies OLA One Access Qualcomm Radisys Redeem Software Reliance Jio Rolta India Limited Samsung Sasken Synopsys Tavant Technologies TCS Tech Mahindra Wipro XiLinx
First Round (Webex) Second Round (Webex)
    Question :: 1
    Write a macro to find maximum of two numbers. enhance it for 3 numbers.

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    Question :: 2
    Debugging command to add breakpoint.

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    Question :: 3
    How to debug a thread in gdb.

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    Question :: 4
    How to attach a core file in gdb.

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    Question :: 5
    What is priority inversion ? explain.

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    Question :: 6
    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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    Question :: 7
    How will free know how many bytes of memory to be freed? How is the sanity check implemented.

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    Question :: 8
    Write a program to delete a node in a Linked list.

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    Question :: 9
    Explain the timer library implementation, for a granularity of 1 sec given the efficiency should be only by time.

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    Question :: 10
    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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    Question :: 11
    Port numbers used for SNMP. What it inform?

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    Question :: 12
    Difference in SNMP v2 trap and v1 trap.

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    Question :: 13
    Questions related to VLAN, STP, RSTP, MSTP, LAG, ACL as discussed above in other companies.

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    Question :: 14
    How the Multicast Mac address is mapped from multicast IP address.

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    Question :: 15
    How are the control packets identified?

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    Question :: 16
    Ether type of VLAN, and QinQ. What is QinQ used for.

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    Question :: 17
    Use of Volatile keyword?

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    Question :: 18
    How a multicast communication happen?

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    Question :: 19
    Declare a function pointer. What is the difference between (void *func)() and void (*func)().

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