# Markdown table output
The 386 supports four privilege rings (0 through 3), though in practice nearly all operating systems use just two: ring 0 for the kernel and ring 3 for user programs. Three privilege levels interact on every segment access: CPL (Current Privilege Level), DPL (Descriptor Privilege Level), and RPL (Requested Privilege Level).
Кадр: U.S. Coast Guard。关于这个话题，im钱包官方下载提供了深入分析
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So Squire and his colleagues analysed everything they could see in Lucy's room: the bedspread, her outfits, her stuffed toys. Looking for any element which might help.
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