Here are 2 CXC General Proficiency sample papers, along with the answer keys. These will give you a better understanding of how CXC marks are allocated.
Note that as this is a 2009 sample paper, the problem solving and programming sections, along with some of the theory, is more complex than it is in the current (2010) syllabus [so don't stress too much over it].
The folder with all the documents (Google Docs)
Paper 2
Comments:
For queries, if multiple conditions are used, AND must be used in between each condition (see: 8.9 (d)(i) ).
The Mock Exam papers and their answers will [hopefully] follow by Monday.
About copyright: I downloaded these papers from a site that allowed them for free download (can’t remember where) without any license agreement, so I assume they are free for sharing and use.