tailieunhanh - sams teach yourself tcp ip in 24 hours phần 7

nhưng bạn cũng có thể chọn ghi đè lên các thiết lập DHCP bằng cách cho phép hoặc vô hiệu hóa NetBIOS qua TCP / IP. Khi một khách hàng WINS khởi động máy tính sau khi được cấu hình để sử dụng WINS, quá trình sau đây xảy ra:Dịch vụ khởi động Khi khởi động máy tính, | 254 HOUR 14 TCP IP Utilities If you are working at a computer and you don t know its hostname use the hostname command. hostname is a simple command available on most operating systems that returns the hostname of the local computer. There are no options or parameters to hostname. Simply enter the command hostname and view the one-word response. Network Performance Problems Network performance problems are problems that cause your network to respond slowly. Because TCP IP protocols commonly use TTL Time to Live settings limiting the age of a packet on the network slow performance can cause lost packets and therefore loss of connectivity. Even if you don t lose connectivity slow network performance can be an irritation and a source of lost productivity. A common cause for poor network performance is excessive traffic. Your network might be experiencing heavy traffic because there are too many computers on the network or the cause might be a malfunctioning device such as a network adapter creating unnecessary traffic on the network in what is known as a broadcast storm. Sometimes the cause for poor network performance is a downed router that has stopped forwarding traffic and caused a bottleneck somewhere else in the network. TCP IP offers a number of utilities that let you see where packets are going and display statistics related to network performance. The following sections discuss these utilities. traceroute The traceroute utility is used to trace the path taken by datagrams as they travel from your computer through multiple gateways to their destinations. The path traced by this utility is just one path between the source and destination there is no guarantee or assumption that datagrams will always follow this path. If you are configured to use DNS you can often determine the names of cities regions and common carriers from the responses. traceroute is a slow command you need to give it as much as 10-15 seconds per router. The traceroute or tracert if you are