A+ 220-1201 Book

When a device shows asnot connectedeven though it previously paired, the most effective action is tore-pair the devices. This resets the Bluetooth connection, clears any corruption in pairing profiles, and re-establishes communication.

Option A:Entering a PIN is only relevant during initial pairing and may not be prompted again.

Option B:Turning off Wi-Fi doesn’t typically affect Bluetooth; they operate on similar frequencies but don’t conflict this way in normal use.

Option D:If Bluetooth were disabled, the device wouldn’t appear at all, not just show as “not connected.”

CompTIA A+ Core 1 Exam Objective Reference:

Objective 1.5: Given a scenario, connect and configure accessories and ports of mobile devices.

DisplayPort is a fully digital video interface that supports HDCP (High-bandwidth Digital Content Protection), a digital rights-management protocol used to protect copyrighted content such as movies, streaming video, and Blu-ray playback. The CompTIA A+ study guide notes that DisplayPort and HDMI support HDCP, while analog connections like VGA and DVI-A do not support HDCP because analog signals cannot enforce digital content protection.

F-type connectors are used for coaxial cabling (cable TV, satellite), not digital video output. DisplayPort's support for encrypted high-definition video streams makes it the correct answer and aligns with CompTIA’s coverage of display connectors and digital content protection technologies.

The Trusted Platform Module (TPM) is a hardware-based security feature used to store cryptographic keys, such as those used for encryption, authentication, or device identification. It plays a critical role in ensuring secure operations for encrypted drives, BitLocker, and secure boot processes. Clearing TPM keys involves wiping all stored cryptographic data, which can lead to several consequences depending on what the TPM was being used for. Let’s break it down:

Correct Answer: A. Encrypted hard drives would probably not be accessible.

Encrypted hard drives, such as those secured with BitLocker encryption, rely on the cryptographic keys stored in the TPM to unlock data.

Clearing the TPM will erase these keys, making it impossible for the encrypted drive to decrypt its contents unless a recovery key (separate from the TPM) is available. Without this recovery key, the data will likely become inaccessible.

CompTIA A+ Core 1 Exam Objective Reference: This falls under Objective 3.5, which covers understanding BIOS/UEFI configurations, TPM functions, and securing devices.

Why the Other Options Are Incorrect:

B. All security certificates would need to be reinstalled from trusted roots.

Clearing the TPM does not erase security certificates stored in the operating system or other areas. Certificates are generally managed by the OS or specific applications, not the TPM.Clearing the TPM only affects cryptographic keys and data stored in the TPM chip, so this is incorrect.

C. The device would need to be reenrolled in the MDM platform.

Mobile Device Management (MDM) enrollment typically does not rely on the TPM. While certain enterprise security configurations may involve the TPM, clearing it does not inherently trigger MDM reenrollment unless specifically tied to the MDM configuration.

D. The laptop would need to be registered to the domain as a new client.

While domain registrations may sometimes use TPM for authentication or secure operations, clearing the TPM alone does not require re-registering the device to the domain. The domain registration and authentication process rely more on system-level credentials than the TPM itself.

Practical Example:

A user enables BitLocker on their laptop, which relies on the TPM to store the encryption key. Later, if they clear the TPM via BIOS/UEFI without saving the BitLocker recovery key separately, they will not be able to unlock the hard drive, leading to data loss unless the recovery key is available. This is a common issue when technicians or users inadvertently clear the TPM without understanding its role in encryption.

CompTIA A+ Exam Objective Alignment:

Objective 3.5: Given a scenario, install and configure laptop hardware and components, including UEFI/BIOS security settings (TPM, secure boot, etc.).

This question tests understanding of TPM functionality, encryption technologies, and secure device configurations.

Comprehensive and Detailed Explanation From Exact Extract:

PIN printing (also known as secure printing) ensures that documents are held in a queue until the authorized user enters a PIN directly at the printer. This prevents unauthorized viewing of confidential documents.