Below is an approximate summary of requirement 6. Be sure to check the official set of requirements in effect.
Requirement 6: Be prepared to discuss several terms used in each of the following categories:
The fastest way to learn about each of these is to use it to search for them one by one in a comprehensive encyclopedia of computer terms.
Alternatively, an online text, requiring Adobe Acrobat, but quite useful is about Computer Architecture and goes into tremendous detail on these topics.
More details on some terms can be found for: