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[学习交流] CCNA640-802 V13题库试题分析37(艾迪飞吴老师讲解)

1How does a DHCP server dynamically assign IP addresses to hosts?

A. Addresses are permanently assigned so that the host uses the same address at all times.

B. Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.

C. Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.

D. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.

Answer: C

解释一下:大部分DHCP配置包括一个租约时间,这个时间定义了客户端可以使用地址的时间期限,当到达时间期限时,客户端必须重新刷新起租约并获得一个新的IP地址。

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