và bạn không còn cần phải cho phép để tiếp tục. 11. Chuyển đổi người dùng parent_standard. 12. Cố gắng thực hiện một nhiệm vụ quản trị, chẳng hạn như thay đổi thời gian hệ thống, hoặc chạy một ứng dụng. Như Hình 5-21 cho thấy, | 310 Chapter 7 Configuring Network Connectivity You can also implement a hybrid network. In this case the WAP is typically connected to the modem as before and computers in fixed locations are connected using wired connections to Ethernet ports on the WAP. Most third-party WAPs have several Ethernet ports in addition to the wide area network WAN port that connects to the modem. You can wire the fixed computers directly to the WAP or you can connect them by using a switch or a hub and connect the switch to the WAP. Wireless-enabled devices connect directly to the WAP and both wired and wireless devices are on the same network and obtain their IP configuration from the WAP which provides DHCP and internal DNS services in the case where a Wi-Fi-enabled computer provides wireless access DHCP and DNS services are provided through ICS . The WAP forwards any datagrams that need to go to the Internet for example browser requests through the modem to your ISP which provides external DNS resolution. Typically you configure a third-party WAP by accessing a webpage interface and a Wi-Fi adapter card through a dialog box. Refer to the manufacturer s documentation for details. MORE INFO Internal vs. external resolution If you need to resolve a computer name on your internal network to an IP address for example if you entered ping Glasgow in the Command Prompt window then the DNS service on your WAP or ICS computer provides the IPv4 address that corresponds to the computer name. If on the other hand you needed to resolve an FQDN on the Internet if you entered http in your browser for example then that FQDN is resolved over the Internet. FQDNs are resolved over the Internet using a DNS server hierarchy and an iterative process. Although it is unlikely that the 70-620 examination will test your knowledge of iterative DNS queries you will need to know how DNS works over the Internet if you intend to develop your career as a network engineer. For more information .
