tailieunhanh - Microsoft Press mcsa mcse self paced training kit exam 70 - 293 phần 2

24 phiên bản ngôn ngữ địa phương, ngôn ngữ giao diện người dùng địa phương, khả năng giao dịch kinh doanh chủ yếu bằng tiếng Anh nhưng để có quyền truy cập vào các ngôn ngữ bổ sung, khả năng giao dịch kinh doanh chủ yếu trong một hoặc | 2-14 Chapter 2 Planning a TCP IP Network Infrastructure Lesson 2 Planning an IP Routing Solution An IP router is a hardware or software device that connects two local area networks LANs relaying traffic between them as needed. Part of designing a network infrastructure is determining how many LANs you will create and how you will connect them. When you are designing a small network routing is not a major consideration because you can put all your computers on a single LAN. For medium-to-large networks this is not a practical solution. You have to create several LANs and then connect them so that any computer on the network can communicate with any other computer. Your IP routing plan can be simple or complex depending on the size of the network installation the number of LANs you decide to create and how you choose to connect the LANs. A small network might have a single router connecting the LAN to an ISP to provide network users with Internet access. A large network installation might consist of many different LANs all connected with routers. The ultimate IP routing scenario is the Internet itself which is composed of thousands of networks connected by thousands of routers. Typically an IP routing plan specifies how many LANs there will be in your network installation and how you will connect the LANs. The plan should also specify the types of routers the network will use and how the routers will get the information they need to forward packets to their destinations. After this lesson you will be able to Understand router functions Use routers to connect LANs and wide area networks WANs Understand the difference between routing and switching Estimated lesson time 20 minutes Understanding IP Routing When a computer on a TCP IP network transmits a packet the datagram in the packet contains the IP address of the destination computer as well as the address of the sender. If the destination address is on the same LAN as the sender the packet travels directly to that .