Apex Code

Question 1

Primitive Data Types

Answer 1

Integer
Double
Long
Date
Date/Time
String
ID
Boolean
Blob
Decimal
Object
Time

Question 2

IDEs compatible with SalesForce

Answer 2

VS Code
Force.com IDE
Dev Console

Question 3

Collections

Answer 3

Maps
Lists
Sets

Question 4

Coding best practices 10

Answer 4

Comment
Bulkify 
Efficient for loops
Utilize collections
No SOQL/SOSL in loops
One trigger per object
Query large data sets
Use limits class
Use @future appropriately 
Test large data sets
Don’t hard core ID’s

Question 5

Testing best practices 10

Answer 5

Always test
Single actions
Bulk actions
Positive actions 
Negative actions 
User access
Test each branch of if statement 
No exceptions outside of try catch
Use system.assert to verify data
Test bulk of at least 20 records
Set up test data
Comment tests
Order by
Test individually to catch all errors
Start with most specific tests and get broader as you move along