横向
1
Named storage location in code
5
Computer model of a real-world system
7
Connected group of computers
8
Encode data to keep it secure
13
Rules for data communication
14
Collection of web pages
纵向
2
Ordered collection of data elements
3
Unit of digital information equal to 8 bits
4
Program to access the internet
6
Physical components of a computer
9
Device that directs network traffic
10
Online data storage and computing
11
Set of instructions for a computer
12
Organized collection of stored data
15
Point where user interacts with system