Answers for sample questions.
1. (b) commit
2.(f) b+c
3.(e) gcc -g prog.c // question doesn't specify the program needs to have a particular name
4.(b) preprocess, compile, link
5.(a) 1,3,4
// can't declare vars of type void, string to char =, illegal comments
6.(a) var=int, foo=int, baz=pointer to an int
7.(d) not legal C
// no return type given for function
8.(e) Not legal C.
9.(d) x=4,y=1,z=5
10.(b) 4,2,4
11.(a) 0,4,0
// Its a bitwise and so the result is zero and the x++ won't execute
// short circuit eval means the second ++x won't run but the y*=2 will
12.(d) none of the above // its actually 2,2,1
13.(d) Not legal C
// you can't declare vars inside for loop headers
14.(c) 4,6
// previously there was an error in this answer so let's look at each one
// individually:
// 1 does not have any exec
// 2 is a directory
// 3 jim!=bob and haxors does not have exec
// 4 yes - bob has exec
// 5 bob is owner but the owner does not have exec
// 6 jim!=bob others!=people and others!=haxors but world has exec so yes
// 
// This leaves us with possible answers or 4 and 6
// so the correct answer is (c)
15.(d) 3
// 1 for each of the blocks and 1 for the indirect block
16.(b) A hard link can prevent a file being removed.
// a file isn't deleted until its link count hits 0
// (e) is false because symlink don't need to point at anything valid
17.(b) Storage
// (e) fails for processes and signals
18.(e) Movie
// A movie will be a large file read sequentially
19.(i) none of the above // PATH, USER and HOME must be upper case.