1

1 2556

. .

. .4

2

3

Computer Network )

Host)

4

5

6

1.

7

2.

E-mail

E-Learning

E-Commerce E-Banking

8

3.

9

WAN

MANLAN

10

1. LAN Local Area Network

11

2. MAN Metropolitan Area Network

12

3. WAN Wide Area Network

13

14

1.

-

- Bus Topology)

- Ring Topology)

- Tree Topology)

- Star Topology)

15

16

2.

ServerClient

17

8

9

10