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I - Of.t ,"p Mode"a ku : + Mbps (3o n'fu'¿ 4, ISDN l,2tl'rs D9L R"rlæ Fr"çr^" n 3 , bYt (tomolo-s4 CrIl"'.(", Ptã,tt Pt!;h > ts î-t b?t LW on (o8 /'( sf s Ctgat"'*fe¡ d4t ?.1zr 27121 , ,. tr'lbf¡ U BI''e- T""14- f'4ì.- Na'v€5 t5 o . Stafrtns .e'/øY Jo ' t SeeJU?'" lr'1* C" C +8 ) 04b¡zs Kn) I ebP s if-< Start => search "Computer name" => select "Rename this compute/' E Сtcm Propertirs Computer Name Adva¡ced Haldvuarc Sy$ern Protection Benu*e Start => search "network connections" => select "view network connections" E Netror* Connection Details E # Network Connection letails: I-t \,úindows uses the following infomation to identiþ your computer on tha nctwoft. Property Eomputer glescdption: Description Value Eonnection-specific DN.. lntelfHJB2ST9LM 6 I Hffi PhysicalAddress Fol exemple: "Kitchen Compute/'or "Märy's Compute/'. Full computar nama: Dom¡in: CS03Ê1 04.¡d.cityu.adu.hk ad.ciþu.adu.hk To use a wizard to ioin a domain or woftgroup. click Netwoù lD. DHEP Ensbled No lPv4 Address 144.214.36.104 lPv4 Subnet Mask 255.255.0.0 lPv4 Defcult Gateway 144.214.3Ê.254 lPv4 DNS Servers 144.214.121.221 Nctwo¡k lD.. r:*u(S 144.214.5.20 144.214.5.27 lPv4i'VINS Setver To raname this computel ol change its domain or workgoup, click Change. ehange.. NetBl0S over ïcpip { OK Cancel åppþ En... Yes til Elose DHCP - a protocol to dynamically assign lP addresses +b Computer Networks E E Network - collection of computers or devices connected via communication devices and ransmission media Common t¡ryes of nenøorls ß uN flocal area network) úNetworkln llmited geographlcal area such as home or oñce building(s) where conrputers/devlces are rclatively near eacl¡ other and can be physlcally connectcd using cables or wlreless mcdla ó8.9., homc network CS departrnentnetworkin Cltyu fr WAN (wide area network) ó Network tl¡at covers a wide geographic area úUses longdlstance transmission med¡a to llnk computcn separated by a few or thousands of mlles ó lnte¡¡et ls the world's latsest """,ffi'or,s*ö 19 -¡tñ h ttp //wh ati s tech ta rg et. co m/d efi n iti o n/n etwo rk-to : . p o Io g y The physicaltopology of a network is the actual geometric layout of workstations. There are several common physicaltopologies, Ërs described below and as shown in the illustratïon. Star Bus Mesh Ring http://whatis.techt arget. com/definitio n/networktopology Tree *l,o http://www.info.gov.hk/gia/general/201312/04/P201312040364.htm Lec08 Computer Network \},.ct OSI Network Model: f.t' \t"o Appticat¡o;9t? , Layer 6) presentatio,Pî\T s' Layer 5) Session i Layer 3) Network $ ¿É Layer 7) Layer 4) Transport Layer 2) Data I \ I f p $ebb.øurw) t t, filce Dfu , [^{a p^'te w8 cP s4., ;ì^tÞ þ¿k¿Jt s*-w În.9t fP f Allaçs ¡achøtt (tlft Link ryt É{tur,.¿f lech''["¿a Layer 1) Physical bt'lt Co¡nn¡,;..f.ìn Ct*".ril ( 'Hffi^^ C^¡L o4 ê-. ^{t'}'e') ,,î,\c.* " Vo rl ,tt COMMUNICATIONS SOFTWARE: Using a Web browser program, you request a Web page on a Web server be displayed on your computer screen. TCP/IP: Your computer uses the TCP/IP standard to establish a connection with the Web server that stores the requested Web page, divide the web page into packets, provide an address for each packet, and reassemble the Web page once it arrives at your computer. Routers send the packets over the Internet from the Web server to your computer. ETHERNET: The Ethernet standard controls how devices (adapter cards, routers, modems, etc.) share access to the media (cables and lines) and how devices transmit data over the communications channel.