Hey guys, just had my IT class for next year and the teacher thought it would be funny to give us past exams to complete. Because i havent done year 11 IT, i have no idea what is going and I need help

I might ask some really noobish questions so dont laugh

These questions are from a year 11 exam
1.Boolean variables have:
a) null values
b) one value
c) two values
d) many values
2. A key field, or primary key is:
a) the first field shown in a data structure table
b) a field that uniquely identifies each record in a file
c)vthe most important field in a database
d) a password protected field in a database
3. An example of a convention would be:
a)centering a heading in a document
b) right aligning numbers in a column in a spreadsheet
c) using a bulleted list for ingredients in a recipe
d) using a dark colour for text in a webpage
And also, can someone please very briefly explain what debugging is. Thanks
