QUESTION NO: 146

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博客围绕网络管理问题展开，作为管理员需确保DHCP服务器不能为网段A的DHCP客户端分配IP。给出的有效解决方案是禁用DHCP服务与网络适配器A的绑定，还介绍了设置DHCP服务器绑定的步骤，并分析了其他方案的不足。

QUESTION NO: 146
You are the administrator of TestKing’s network. Your DMZ network includes a DHCP server that provides IP addressing information to remote users. The relevant portion of the DMZ is configured as shown in the exhibit.

Every five minutes, the management servers collect performance and security log information from all servers on segment A.
You need to ensure that the DHCP server cannot issue IP addressing information to any DHCP clients on segment A. Your solution must be effective even if a valid scope for that segment is created on the DHCP server.
What should you do?

A. Disable the DHCP service binding to network adapter A
B. Disable TCP/IP binding to network adapter A
C. Disable NetBIOS over TCP/IP binding to network adapter A
D. Disable the client for Microsoft Networks on network adapter A

Answer: A.

Explanation: By disabling the binding of the service on an interface, we achieve a more efficient way of disabling DHCP response to clients, rather than completely removing TCP/IP which might result in a total loss of connectivity.

Note: To selectively set DHCP server bindings for network connections
1. Open DHCP
2. In the console tree, click the applicable DHCP server.
3. On the Action menu, click Properties.
4. Click the Advanced tab.
5. Click Bindings.
6. In the Bindings dialog box, for the list of Connections and server bindings, select or clear check
boxes for any statically configured network connections that should be enabled or disabled for use
at the applicable DHCP server.
7. Click Apply.

Incorrect Answers:
B: This proposed solution has a drawback. If we disable the TCP/IP protocol on the interface no TCP/IP
traffic would occur on the interface. This might result in might result in a total loss of connectivity.
C: The “Disable NetBIOS over TCP/IP binding” is a WINS configuration and would not prevent DHCP
leases on the interface.
D: Client for Microsoft Network is network service. Disabling it will not prevent DHCP issuing IP
addressing information on segment A.