Protected Mode

Descriptor tables, selectors, protection rings.

Darshan N
Updated: 19 March 2026
10 min read

Protected Mode Quiz

Test your understanding of x86 protected mode, descriptor tables, selectors, and privilege rings.

Question 1 of 3

Q1.In x86 protected mode, a segment selector stored in a segment register contains a 13-bit index, a TI bit, and a 2-bit RPL field. What does the TI bit specify?