Slide 1

1. 1 bit 01100010011000100 1 1 0 0 0 1 0

() 1 Games1234562. bit

011000101. (Simple transmission) 2. (Half duplex transmission) 3. (Full duplex transmission)

1. Twisted pair cable 100 Hz 5 MHz 2 (unshielded twisted-pair UTP) (shielded twisted-pair STP)

2. Coaxial cable 100 MHz 500 MHz

3. (Optical fiber cable)

1. (Infrared) IrDa port remote control

2. (Radio Wave)

3. (Microwave) (line of sight) 3. () 30- 50 .

3. () 4. (Satellite) 22,000 2

4. () (= delay time)

STP155 Mbps100 UTP1 Gbps100 Coaxial10 Mbps500 Fiber-Optic100 Gbps2 2. ring topology

(Topology)3. star topology hub hub

(Topology)4. mesh topology

(Topology)5. hybrid topology

(Topology)1. (centralized processing) server host host server

2. ( client/server processing) server

Personal area network : PAN Bluetooth PDA Desktop

Local area network : LAN 10 10-100 MbpsWireless LAN access point wireless adapter

Metropolitan area network : MAN

Wide Area network : WAN LAN MAN

(Network Interface Card : NIC) ==> Lan Card

RJ45 RJ45 pin 8 pin

(Hub) (Port) (Switch)

(Router)

(Access Point)

(Hub) (Switch) (Router) - (Protocol) Hardware Software (Protocol) TCP/IP ProtocolTCP/IP : HTTP (Hypertext Transfer Protocol) : World Wide Web Hypertext FTP (File Transfer Protocol) : POP3 (Post Office Protocol 3), SMTP (Simple Mail Transfer Protocol) : - e-mail (File Transfer Protocol : FTP) (Download File ) (Upload File)

(Protocol) - TCP

1. Transmission Control Protocol (TCP) (Protocol) 2. Internet Protocol (IP) IP IP

(Protocol) 3. FTP (File Transfer Protocol) FTP File Transfer protocol FTP SMTP FTP FTP server (Protocol) FTP : FILE TRANSFER PROTOCOL ftp://ftp.nectec.or.th (Protocol) 4. Hypertext Transfer Protocol (HTTP) HTTP WWW service TCP port 80

(Protocol) PMSHAREERDDRAIIVLANALOGELEIBPSRETTRLWAMOOCLIENTRSOKSCAOGLSIMPLEX12345789101112SHAREANALOGCLIENTSIMPLEXBPSERVERRALLELPDIETWORKMROOCOLMSSAGDIITA61. 2. 3. 4. 5. - 6. 7. 8. 9. 2 10. 0 111. 12. Cross Word GamePuzzle GameABCDEFGHIJKLMN1AD/PCSOOIDMESC2FTIBWYEFGTNE/F3ECDRERI/TPISTO4MPHUKWDCHUBREE5U/AMIXUFAWUTDY6PILOCOTORPCAHA7SPREKLEGIARWIF8DCONYIBN/TSLGU9LEVGBLUETOOTHA1. 2. 3. 4. 5. 12345 1 Microwave, Satellite 10 GbpsLANWANPANMAN : (Hybrid topology)123451 : (Ring topology)123452 : Hub Switch (Star topology)123453 : (Bus topology)123454 : (Mesh topology)1234551. 2. 3. 4. 5. . STP . . . . . . UTP . . /(Hub/Switch)

1RJ45

2Lan card

3 (Router)

4Access point

5 (Modem)6