1. what is ddos attack and how to prevent?
2. What is file system?
3. What is IP spoofing?
4. Port Numbers.
5. How to work FTP and what is use of port 20 and 21?
6. What is kernerl?
7. How many tables in iptables?
8. What are shell variables?
9. What is 'inode'?
10. What are the main differences between RHEL4 & RHEL5?
11. What is difference between imap and pop?
12. Describe linux boot sequence:
13. What different between port and protocols?
14. What is the difference between UDP and TCP internet protocols?
15. What is a zombie process?
16. What is difference between daemon and process?
17. Logs location.
18. difference between unix and linux?
19. What are the main differences between RHEL4 & RHEL5?
20. What are seven fields in the /etc/passwd file?
21. What is a filesystem?
22. What command is used to remove the password assigned to a group?
23. Which of the following commands will show a list of the files in your home directory including hidden files and the contents of all subdirectories?
24. Which file defines all users on your system?
25. What is the minimum number of partitions you need to install Linux?
26. What is a PID?
27. Difference between Hard Link and Soft Link in Linux?
28. What is Raid? The different types and Levels of Raid?
29. What is NFS? What is its purpose?
30. What does nslookup do?
31. What is .htaccess?
32. How many field in crontab?
33. Which log contains information on currently logged in users?
34. What is DNS?
35. How do you create a swapfile?
36. How to get the mysqlbackup and restore?
37. Where is located hardware configuration file in linux?
38. Whats the advantage of using ssh over telnet?
39. How to assign temporary IP address to lan-card?
40. How to recover grub on linux server?
41. How to setup log rotation on linux server?
42. How to see only sub-directory in directory?
43. How to see only files in directory?
44. How to replace the word without opening the file?
2. What is file system?
3. What is IP spoofing?
4. Port Numbers.
5. How to work FTP and what is use of port 20 and 21?
6. What is kernerl?
7. How many tables in iptables?
8. What are shell variables?
9. What is 'inode'?
10. What are the main differences between RHEL4 & RHEL5?
11. What is difference between imap and pop?
12. Describe linux boot sequence:
13. What different between port and protocols?
14. What is the difference between UDP and TCP internet protocols?
15. What is a zombie process?
16. What is difference between daemon and process?
17. Logs location.
18. difference between unix and linux?
19. What are the main differences between RHEL4 & RHEL5?
20. What are seven fields in the /etc/passwd file?
21. What is a filesystem?
22. What command is used to remove the password assigned to a group?
23. Which of the following commands will show a list of the files in your home directory including hidden files and the contents of all subdirectories?
24. Which file defines all users on your system?
25. What is the minimum number of partitions you need to install Linux?
26. What is a PID?
27. Difference between Hard Link and Soft Link in Linux?
28. What is Raid? The different types and Levels of Raid?
29. What is NFS? What is its purpose?
30. What does nslookup do?
31. What is .htaccess?
32. How many field in crontab?
33. Which log contains information on currently logged in users?
34. What is DNS?
35. How do you create a swapfile?
36. How to get the mysqlbackup and restore?
37. Where is located hardware configuration file in linux?
38. Whats the advantage of using ssh over telnet?
39. How to assign temporary IP address to lan-card?
40. How to recover grub on linux server?
41. How to setup log rotation on linux server?
42. How to see only sub-directory in directory?
43. How to see only files in directory?
44. How to replace the word without opening the file?
