Across
1
Connected group of computers
3
Computer model of a real-world system
7
Global computer network
10
Wired networking technology
Down
2
Instructions written for a computer
3
Programs and applications on a computer
4
Wireless internet connection
5
Storage medium for digital data
6
Input device with letter and number keys
8
Encode data to keep it secure
9
Online data storage and computing
11
Security system blocking unauthorized access