MSCA 70-291 Windows Server 2003 Exam Prep

Answer - D - By default, a DHCP client attempts to renew its IP address lease after 8 days.

Key Takeaway: Once the default lease period is crossed, a computer has to renew its use of the address they've been leased by your DHCP server. A grace period of four hours is added to the end of the lease to prevent against clock drift between the DHCP client and the server.

Certain circumstances when you might want to lengthen this lease period include: While maintaining a stable network where computer count and location is not changed; when you have a large pool of available IP addresses to lease from; and when your network is saturated with very little available bandwidth and you want to reduce DHCP traffic to increase available bandwidth.