Automatically assigned IP addresses for "Laziness" by network administrators (2)

5. Configure and test the DHCP Client

1) configure the DHCP Client

Right-click "Network neighbors" and select "properties" on the desktop of the involved computers. In the displayed window, right-click "Local Connection" and select "properties ", double-click "Internet protocol TCP/IP)" in the displayed dialog box to open the "Internet protocol TCP/IP)" dialog box, as shown in figure 2 ), configure "automatically obtain IP Address" and "automatically obtain DNS server address" as DHCP clients by default ).

2) confirm the DHCP Client Configuration

Click "start"> "run" on the ce-congrq computer, enter "cmd", and press the Enter key. In the command line window that appears, enter "ipconfig/all ", confirm DHCP configuration, as shown in figure 6.

3) view the DHCP Client lease
In the DHCP Management Console of the DHCP server WNT-DHCP, click "address lease" under the scope of "Event" to view lease 7 for all DHCP clients, including "Event-Congrq ).

DHCP is used to automatically assign TCP/IP parameters to computers in the network, which greatly reduces the management time of network administrators and improves work efficiency. However, because DHCP needs to use broadcast communication during the automatic allocation process, it will bring a certain amount of extra traffic to the network during the allocation process, which usually does not have a great impact on network communication. In addition, because broadcast communication cannot span subnets, necessary additional configurations are also required for automatic allocation between different subnets.

In view of the length of the article, the detailed introduction of this technology will be published in the future of this publication. Please stay tuned.

Exercises after class
1. Which of the following protocols can dynamically allocate IP addresses:
A. dhcp B. DNS C. WINS D. SMTP

2. If you want to configure a computer as a DHCP server, the corresponding conditions must be met. Which of the following conditions is not required?
A. IP addresses with static configurations B. IP address ranges with allocable IP addresses C. Two Ethernet cards are installed D. A subnet mask is configured.

3. If there is more than one available DHCP server in the same subnet and the scope of these DHCP servers contains the same IP address, what would happen?
A. the DHCP server may allocate the same IP address to more than one DHCP client. B. The problem is not automatically corrected unless the DHCP server is also a client. C. The first DHCP server that finds duplicate IP addresses will automatically shut down until the problem is resolved. D. Duplicate addresses are automatically excluded from the IP address scope.

4. if the lease term of the previous scope of the DHCP server is set to one day, the DHCP client that rents an IP address from this scope will continue to start up, how long will it take to try to update its IP address lease to the server?
A. 6 hours B. 12 hours C. 24 hours D. 48 hours

5. what may happen if a DHCP client fails to rent an IP address from the DHCP server?
A. the client cannot communicate with other subnet computers. initialize TCP/IP on the client. All data packets are sent to the default gateway. assign a 127.0.0.1 address to the client until it can be rented from the DHCP server to the IP address D. data packets from and sent to the client are stored on the DHCP server until the client is rented to the IP address and then sent to the client together.

6. When the DHCP Client rents an IP address from the server, you need to use:
A. UDP ports 67 and 68 B. TCP ports 67 and 68 C. UDP ports 53 and 54 D. TCP ports 53 and 54

7. When deploying DHCP in the Windows 2000 domain, you need to authorize the DHCP server. The meaning of authorization is as follows:
A. Prevent Illegal DHCP servers B. Accelerate the response speed of DHCP servers C. Redundant DHCP servers D. Increase the number of automatically assigned IP addresses for DHCP servers

8. Which of the following DHCP options do I need to configure to enable the DHCP server to automatically assign the IP addresses of the default gateway and DNS server to the DHCP client?
A. 044 and 046 B. 003 and 015 C. 003 and 006 D. 003 and 047

9. Which of the following commands is used to manually update the lease to the DHCP server?
A. ipconfig/release B. ipconfig/renew C. ipconfig/rebind D. dhcpcmd/renew

10. The IP address of a DHCP server is 192.168.1.1/24, and only one scope is created, which contains 172.16.10.1/24 ~ The IP address range of 172.16.10.120/24. Which of the following IP addresses may be rented by the DHCP client in the same subnet as the DHCP server by default?
A. 172.16.10.120 B. 192.168.1.1 C. 172.16.10.1 D. The client cannot be rented to an IP address.
Reference answer: 1-5: A/C/A/B/A 6-10: A/C/B/D (T101)

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