Across
1
Security system blocking unauthorized access
4
Set of instructions for a computer
5
Device that directs network traffic
6
Reusable block of code
8
Data type with true or false values
10
Computer model of a real-world system
11
Interface for software to communicate
Down
2
Program to access the internet
3
Connected group of computers
7
Moving images created digitally
9
Portable personal computer