5-15-1.1(Local Area NetworkLAN)(Router)

---(Wide Area NetworkWAN)

5-1.2(Protocol) ()

TCP/IP

http://www.ntnu.edu.twhttp()FTPTELENTSMTPTCP/IPTCP()TCP/IPIPIPIP(Ethernet)

OSITCP/IP(International Organization for StandardizationISO)(Open Systems InterconnectionOSI)OSI(Layer)OSI 7(5-1.4)

OSIOSI 7OSI 7n

DHCP (Dynamic Host Configuration PortocolDHCP) IPDHCPIP(IP)

() www .savs.ilc.edu.tw

5-1.1

NTNUbbsbbs.ntnu.edu.tw

WWWwww.tcivs.tc.edu.twFTPftp.savs.ilc.edu.twMailmail..tcivs.tc.edu.tw.BBSbbs.ntu.edu.tw

(Domain NameDN)(Server)IPIP

NTUwww.ntu.edu.tw

5-1.2

()()TwTaiwanCnChinaHkHongKongJpJapanAuAustraliaSgSingapore(www.nba.com)

5-1.3

tzuchihttp://www.tzuchi.org.tw/

EduEducation()ComCommerceGovGovernment()NetNetwork(www.hinet.net)OrgOrganization()MilMilitaryIdvIndividual

(Domain Name ServerDNS)IP IPIPIP Ping

IP(http://

5-1.3 tracert www.ttv.com.tw IP

TTV () www.ttv.com.tw

(Hinet)

()

A

B

C

T

D

1

2

E

F

3

4

5-1.3 (TaNet)(5-1.10)(Hinet)

5-1.4 1.56kbps(bit per secondbps) ISP (Modem)()

5-1.4 2. (Internet Service ProviderISP)(Asymmetric Digital Subscriber LineADSL)(Cable)

2.ADSLADSLADSL(256k~9Mbps)(9.6k~1Mbps)DSL() ADSLISP(Internet Service Provider)6

ADSL()()ADSL

2.CMCM(Cable Modem)ISP()1.5Mbps

()()

(Hub)

(Hub)

(Ring)

(Tree)

3. (Access PointAP)5-1.17

3. IEEE 802.11 IEEE 802.11b IEEE 802.g802.11(CSMA/CA)IEEE 802.11b11MbpsIEEE802.11g802.11b55Mbps

5-25-2.1 P201~204(1) / Internetr() (2)YahooYahoo

5-25-4.2 P205~206()

5-3 5-3.1(E-mail)()E-mailSMTP(Simple Mail Transfer Protocol)POP3(Post Office Protocol 3)

5-3.1(E-mail)Jeff E-mail() mary@hinet.net

SMTPSMTPHinet.netPOP3Mary E-mail()POP3Jeff

At()

5-3.2(FTP) FTP://(IP) FTPFTPQFTPFTP

5-3.3(BBS) (Talk)(Chatroom)(Telnet)WebBBS -- TelnetBBS(p208~210)

5-3.4(WWW)(World Wide WebWWW)(Browser)(Hyperlink)() (Internet ExploreIE) (HyperText Markup LanguageHTML) /

5-45-4.1 P211~214(1)() ()category 5e (6e)RJ45

5-4.1 P211~214(2)()(568A)(568B) *

12345678

5-4.2 (1)RJ45(2)(3)

5-4.3 ADSLADSL

5-4.3 ADSL(IP)ADSL(RouterIP)IP(DHCP+ NAT)

192.168.0.101192.168.0.102IPWANADSL LineLAN

5-4.4 ADSLALERT()LANADSL()LinKALERTDATA RXDATA TX

5-4.4 () WAN

5-4.5(1) P219~222(2) P223~227(3) P227~230