I am studying for the 2002 Network+ exam and finding out that one place that I am weak in the OSI Layer model with its layer's functions, its operating devices, and its TCP/IP protocols. How well do I need to know it for the exam?
Humor me, please and answer these stupid questions!
What do I need to know about other network OSs & their protocol suites for the 2002 Network+ exam?
What is a service, what is a protocol and what is the difference between them? What is data encapsulation, what is a frame, what is a packet, what is packet switching, and what is circuit switching?
How do you remember what the different TCP/IP port numbers are for their protocols (I think I have it correctly)?
How do you know which protocol works at which OSI Layer, even the non-TCP/IP ones too?
What advice can you give me and what websites, test prep software, books, PDF files etc. are good?
How do I find out the answer with explananations as to why the answer is correct and the incorrect choices are incorrect to my questions from the Internet? How do I know I can trust the info I find?
I am sorry that I didn't read the free version of the TechExam's notes yet. (Is there any difference between the Special Edition and the free edition?)