Aricent

Aricent Face-2-Face Interview

1. Frame format of Dot1Q. Use of TPID. What if the vlan id is 0? How does it classify.
2. How to see the contents of an archive file?
3. Explain STP, RSTP, MSTP differences.
4. Explain Link OAM and how it can be used to detect faults.
5. How is the Discovery process done in Link OAM. How are the errors notified to the customer? How can the loopback detect the problems. How the configuration is done. is there any default configuration that can be used?
6. const char *p and char *const p differences.
7. What is segmentation fault? which signal is used to indicate it.
8. What is volatile used for. What is the difference between volatile const char *p and const char *volatile p.
9. What is QinQ? how is it used and where is it used
10. Ingress filtering related questions.
11. A TCP socket is used in sendto(). Will the packet pass?

12. What happens when a fork is done. How will the scheduler adjust the time slice for it?
13. What are the different system calls that change the execution from user mode to kernel mode?
14. How is process different from a thread.
15. Difference between Mutex and Binary semaphore?
16. Different IPC mechanisms used/available.
17. What is a zombie process?
18. What is padding problem? How can it be controlled? How is it handled using pragmas?
19. SNMP qns that are mentioned in Brocade were asked.
20. o/p of the program
 int main()
{
int *p;
p=value();
printf("%d",*p);
return 0;
}
int * value()
{
int p=100;
return &p;
}
21. What does a Malloc do. Return type of malloc.
22. Declare a function pointer.
23. Application of counting semaphore.
24. what are ACL's used for?
25. What is the ethertype for QinQ, VLAN.
26. What is the use of ioctl?
27. How are the sockets used for a communication link.
28. What is internal fragmentation and external fragmentation.
29. What is the difference between shared object and a library?
30. Use of Static key word. What are the different storage classifiers available.

31. Use of extern key word.
32. Difference between typedef and macro.


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