What is OSPF?
2-  What is DHCP?
3-- Briefly explain what is ICMP.
4-  What is a Ping?
5-  What are the advantages of optic fiber?
6-  What do you mean by Ethernet?
7-  What is slip?
8-  What do you mean by iPv6? 
9-  Explain the RSA algorithm briefly.
10-  What is an encoder?
11-  What is a decoder?
12-  What is a sneakernet?
13-  What are the components of a protocol?
14-  What is DNS?
15-  Explain Beaconing.
16-  Define IEEE in the networking world.
17. Missing Windows desktop Recycle Bin icon.
18. How to empty or manage the Windows Recycle Bin.
19. How to make files not go to the Recycle Bin in Windows.
20. How to recover a deleted file from the Windows Recycle Bin.
21 What files are not sent to the Windows Recycle Bin?
22. How to rename the Microsoft Windows Recycle Bin??