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Exam 101-400 topic 2 question 21 discussion

Actual exam question from LPI's 101-400
Question #: 21
Topic #: 2
[All 101-400 Questions]

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

  • A. dd if=/dev/zero of=/dev/sda bs=512
  • B. dd if=/dev/zero of=/dev/sda bs=512 count=1
  • C. dd if=/dev/zero of=/dev/sda bs=440 count=1
  • D. dd if=/dev/zero of=/dev/sda bs=440
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Suggested Answer: C 🗳️
by DuboisNicolasDuclair at Oct. 21, 2023, 2:43 p.m.

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DuboisNicolasDuclair
1 year, 4 months ago
Selected Answer: C
The command that overwrites the bootloader located on `/dev/sda` without overwriting the partition table or any data following it is: C. `dd if=/dev/zero of=/dev/sda bs=440 count=1` This command specifically writes zeros to the first 440 bytes of the MBR (Master Boot Record), which contains the bootloader code. It leaves the partition table and any data following it untouched.
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