220-801 · Question #1026
Which of the following features is used for security in laptops and can be used by BitLocker in Windows 7 to encrypt the hard drive?
The correct answer is C. TPM. TPM is a dedicated security chip that stores cryptographic keys, enabling BitLocker to encrypt the hard drive without requiring a USB key at every boot.
Question
Which of the following features is used for security in laptops and can be used by BitLocker in Windows 7 to encrypt the hard drive?
Options
- AVirtualization extensions
- BBIOS password
- CTPM
- DCMOS
How the community answered
(28 responses)- A4% (1)
- B7% (2)
- C89% (25)
Why each option
TPM is a dedicated security chip that stores cryptographic keys, enabling BitLocker to encrypt the hard drive without requiring a USB key at every boot.
Virtualization extensions (Intel VT-x / AMD-V) enable hypervisor support for running virtual machines and have no direct role in BitLocker drive encryption.
A BIOS password restricts access to firmware settings but does not provide the cryptographic key storage that BitLocker requires for full-disk encryption.
The Trusted Platform Module (TPM) is a hardware security chip embedded on the motherboard that securely stores encryption keys. BitLocker in Windows 7 leverages TPM to bind the volume encryption key to the platform, allowing seamless drive encryption and integrity verification at startup without exposing keys to software attacks.
CMOS is a small battery-backed memory chip that stores BIOS configuration settings such as date and time; it has no cryptographic capability and is unrelated to BitLocker.
Concept tested: TPM chip role in BitLocker encryption
Source: https://learn.microsoft.com/en-us/windows/security/operating-system-security/data-protection/bitlocker/
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