II0-001 · Question #123
Which of the following represents the data found at a NTFS hard drive, and lasts for 3 bytes?
The correct answer is B. Jump Instruction. Jump Instruction (B) occupies the first 3 bytes of the NTFS Boot Sector (typically EB 52 90), directing the CPU to skip over the BPB metadata and execute the actual boot code - exactly 3 bytes, no more. Why the distractors are wrong: A. OEM ID - also found in the NTFS boot…
Question
Which of the following represents the data found at a NTFS hard drive, and lasts for 3 bytes?
Options
- AOEM ID
- BJump Instruction
- CBPD
- DEnd of sector marker
How the community answered
(28 responses)- A4% (1)
- B75% (21)
- C14% (4)
- D7% (2)
Explanation
Jump Instruction (B) occupies the first 3 bytes of the NTFS Boot Sector (typically EB 52 90), directing the CPU to skip over the BPB metadata and execute the actual boot code - exactly 3 bytes, no more.
Why the distractors are wrong:
- A. OEM ID - also found in the NTFS boot sector, but it occupies 8 bytes (the string
"NTFS "), not 3. - C. BPB (BIOS Parameter Block) - follows the OEM ID and spans many more bytes (25+ bytes), storing volume geometry like sector size and cluster count.
- D. End of sector marker - is only 2 bytes (
0x55 0xAA), located at the very end of the boot sector, not 3 bytes.
Memory tip: Think of the boot sector as a letter - the Jump Instruction is the "stamp" (small, 3 bytes, comes first), the OEM ID is the "return address" (slightly larger, 8 bytes), and the BPB is the letter's body (the bulk of the metadata). Three bytes = the tiny stamp that kicks off execution.
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