World-Wide-Web (Wait) • Web Browser: Internet Explorer, Netscape Navigator, Opera, World-Wide-Web (t.t) • K t n i n Web Serverế ố đế Web Server Web Server www.microsoft.com www.microsoft.com User Browser http://www.microsoft.com/a.html GET <a.html> file <a.html> File Transfer Protocol (FTP) • FTP client và FTP Server FTP Server FTP Server www.microsoft.com www.microsoft.com User ftp://www.microsoft.com/b.txt GET <a.txt> Here you are <b.txt> FTP Client (WS-FTP Pro, ftp.exe,…) EMail Mail Server Mail Server hcm.vnn.vn hcm.vnn.vn User SEND TO me@yahoo.com Mail Client (Outlook, Netscape Mail, Eudora) GET ALL messages Here you mesages Webmail Mail Server Mail Server hcm.vnn.vn hcm.vnn.vn User SEND TO me@yahoo.com Here you mesages WebMail Client = Browser (Yahoo, Hotmail, FPTNET, VASC,…) GET ALL messages Chat Chat Server Chat Server WebChat, mIRC, ICQ, Yahoo Messenger, MSN) Xây d ng m t Intranet n ự ộ đơ gi nả Intranet = LAN + TCP/IP Local Area Networks (LANs) • M ng s h u riêng c a m t t ch c, ạ ở ữ ủ ộ ổ ứ công ty • Ph m vi gi i h nạ ớ ạ – Kho ng vài km, Ph c v t 10 ả ụ ụ ừ ÷ 100 user • Kênh truy c p chia s (shared) ậ ẻ 10÷ 100 Mbps • Thi t b ế ị – twisted pair, coaxial cable, fibre optic, wireless • Ch y u là chu n Ethernetủ ế ẩ Chu n Ethernet cho LANẩ (IEEE 802.3) Thi t b m ng - NICế ị ạ [...].. .Thiết bị mạng ­ NIC Chức năng của card mạng • Nối máy tính vào mạng • Cung cấp địa chỉ MAC trong  các lần kết nối • Hiện thực CSMA/CD để truy  cập kênh truyền vật lý, phát  hiện và xử lý đụng độ . World-Wide -Web (Wait) • Web Browser: Internet Explorer, Netscape Navigator, Opera, World-Wide -Web (t.t) • K t n i n Web Serverế ố đế Web Server Web Server www.microsoft.com www.microsoft.com User Browser http://www.microsoft.com/a.html GET. Client (WS-FTP Pro, ftp.exe,…) EMail Mail Server Mail Server hcm.vnn.vn hcm.vnn.vn User SEND TO me@yahoo.com Mail Client (Outlook, Netscape Mail, Eudora) GET ALL messages Here you mesages Webmail Mail. Server hcm.vnn.vn hcm.vnn.vn User SEND TO me@yahoo.com Here you mesages WebMail Client = Browser (Yahoo, Hotmail, FPTNET, VASC,…) GET ALL messages Chat Chat Server Chat Server WebChat, mIRC, ICQ, Yahoo Messenger, MSN) Xây