Bài giảng Basic network management, chương 12 giới thiệu các mô hình mạng WAN. Trong chương này người học có thể biết được các kết nối WAN như leased line, ADSL, PSTN. để biết thêm các nội dung chi tiết. | Chapter 12: Wan Overview Objective WAN Transmission Technology Leased Line ADSL PSTN Mục đích: giới thiệu các mô hình mạng WAN -Đưa ra ví dụ các kết nối WAN như leased line,ADSL,PSTN Introduction In order to take advantage of WAN services, local networks and individual users must select a method for gaining access Service providers offer a wide range of WAN access options Each designed to meet a specific set of transmission needs in an efficient and cost-effective manner WAN Overview WANs connect remote sites. Connection requirements vary depending on user requirements, cost, and availability. Purpose: This figure introduces students to WAN connections. Emphasize: Highlight the interconnected WAN connections between the various company sites. The site graphically present a mobile dial-up user, a telecommuter using a DDR connection, and two office sites with multiple connections. This course teaches students how to configure a WAN. Tell students that a WAN is a data communications network that serves users across a broad geographic area. Transition: Following are the various physical connections that will connect these sites. WAN Technology Leased line Frame Relay ISDN (integrated services digital network) ADSL Leased Line Purpose: This figure introduces students to various physical WAN connections. Emphasize: Leased lines have point-to-point connections that are indefinitely reserved for transmissions, rather than switched as transmission is required. Typically, a leased connection is made using serial lines. Circuit-switched connections are dedicated physical circuit paths established only during the duration of a call. Physical circuit-switched examples are asynchronous serial and ISDN. Packet-switched networks use packet switching technology for data transfer. Evolving physical connections not discussed in this course follow: Digital subscriber line (DSL)—DSL is an emerging technology that delivers high bandwidth over conversational copper lines. There are four | Chapter 12: Wan Overview Objective WAN Transmission Technology Leased Line ADSL PSTN Mục đích: giới thiệu các mô hình mạng WAN -Đưa ra ví dụ các kết nối WAN như leased line,ADSL,PSTN Introduction In order to take advantage of WAN services, local networks and individual users must select a method for gaining access Service providers offer a wide range of WAN access options Each designed to meet a specific set of transmission needs in an efficient and cost-effective manner WAN Overview WANs connect remote sites. Connection requirements vary depending on user requirements, cost, and availability. Purpose: This figure introduces students to WAN connections. Emphasize: Highlight the interconnected WAN connections between the various company sites. The site graphically present a mobile dial-up user, a telecommuter using a DDR connection, and two office sites with multiple connections. This course teaches students how to configure a WAN. Tell students that a WAN is a data communications .
