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1. Program for String reversal in best efficient way.
2. Program for reversal of n characters in a string. Say string is "interview", your o/p should be "tinvrewei". Reversing for every 3 characters.
3. Basic working of Switch.
4. Use of PVID.
5. Ingress filtering use.
6. ACL's and their use. What is TCAM.
7. Difference between process and threads.
8. How a thread is a light weight process.
9. Difference between binary and counting semaphores. How binary sem is different from mutex.

10. Difference between SNMP V1, V2,V3 protocols.
11. What is Gauge used for. DIfference between Gauge and Counter.
12. Explain what happens when www.yahoo.com is entered in the browser. All the communication that happens. How will the data be retrieved. What happens if the DNS server is connected to a different network.
13. Compose the datastructure that is used in SNMP while searching for a particular OID. Explain the entire search process done to ascertain the OID.
14. give examples for RTOS applications. Where and why they are preferred. How the latency is reduced. Advantages of RTOS over other OS.
15. If a faulty thread is present which has infinite loop, explain how the scheduler handles it. How to fix this ?
16. How to determine merging in a linked list.
17. How to use two queue's to get the behavior of a stack.
18. What are the traversals available. Come out with a traversal technique which can print 1,2,3,4,5,6,7,8 for a tree shown below.
                   1
           2               3
     4         5      6     7
  8
19. How do you search for duplicate data in a linked list?
20. How to know if a data structure was modified when it is shared between different threads which can read, modify, delete data from it. What mechanism is followed in general.
21. How to debug a system hang.
22. How to debug a crash. Especially when the core file does not give proper information.
23. Priority inheritence explain.
24. What are the IPC mechanisms available.
25. How will the scheduler schedule the threads in a normal OS (i.e. Non premptive priority based). How will it handle when a thread malfunctions in the process.
26. Explain how security is achieved using SNMP V3.
27. How  do you determine Little endian or Big Endian. Write program.
28. Write prog for ntohs()
29. Explain STP, RSTP and MSTP. Which one is better top down or bottom top model for ST, w.r.t Root bridge position. Edge ports use.
30. How to detect a memory is corrupted? What are the mechanisms used?
31. What are the different signals you have used?
32. what are the different segments you know.
33. what is a heap data structure.

34. What happens if a ARP packet is L3 broadcast?
35. How do you implement a timer library.



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