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3. Chọn trang web mới liên kết từ trình đơn pop-up. 4. Trong hộp thoại Link New Site, chọn các trang web sẽ tham gia vào liên kết trang web này và gõ tên của trang web, như thể hiện trong hình A.16. Bạn phải đặt ít nhất hai địa điểm tại mỗi liên kết trang web. 5. Nhấn OK. | Chapter 2 Communication Technologies 53 organized into distributed systems that manage dynamically changing replicated data and take actions in a consistent but decentralized manner. For example routing a call may require independent routing decisions by the service programs associated with several switches and these decisions need to be based upon consistent data or the call will eventually be dropped or will be handled incorrectly. B-ISDN then and the intelligent network that it is intended to support represent good examples of settings where the technology of reliable distributed computing is required and will have a major impact on society as a whole. Given solutions to reliable distributed computing problems a vast array of useful telecommunication services will become available starting in the near future and continuing over the decades to come. One can imagine a telecommunications infrastructure that is nearly ubiquitous and elegantly integrated into the environment providing information and services to users without the constraints of telephones that are physically wired to the wall and computer terminals or televisions that weigh many pounds and are physically attached to a company s network. But the dark side of this vision is that without adequate attention to reliability and security this exciting new world will also be erratic and failure-prone. 2.6 ATM Asynchronous Transfer Mode or ATM is an emerging technology for routing small digital packets in telecommunications networks. When used at high speeds ATM networking is the broadband layer underlying B-ISDN thus an article describing a B-ISDN service is quite likely to be talking about an application running on an ATM network that is designed using the B-ISDN architecture. ATM technology is considered especially exciting both because of its extremely high bandwidth and low latencies and because this connection to B-ISDN represents a form of direct covergence between the telecommunications infrastructure
