Newly Released CompTIA 220-1101 Exam PDF

Single-mode fiber uses a beam of light to transmit data over long distances through a very thin, flexible cable. It is commonly used for high-speed data transmission across wide areas, such as between buildings or over long distances within a network. Single-mode fiber offers a higher bandwidth and longer distance capabilities compared to other types of fiber optics.

D. Single-mode fiber: Transmits data using light through a fiber optic cable, making it ideal for long-distance communication.

Why the other options are incorrect:

A. Coaxial: Coaxial cables use electrical signals, not light, to transmit data.

B. HDMI: HDMI (High-Definition Multimedia Interface) is used for transmitting audio and video signals but does not use light for data transmission.

C. Thunderbolt: Thunderbolt cables transmit data using electrical signals and are typically used for high-speed data transfer and display connections.

This falls under the Networking and Hardware domain in the CompTIA A+ Core 1 exam​.

The ticking noise likely indicates a failing hard drive. The technician should attempt to extract data before the drive fails completely.

Comprehensive and Detailed In-Depth Explanation:

Dual-BIOS motherboards contain two firmware chips. If the primary BIOS becomes corrupted, the system can failover to the secondary BIOS. Most boards allow manual enabling of the secondary BIOS via a physical switch or jumper.

Option B: Downgrading firmware may not be possible if the system won’t POST or access UEFI.

Option C: Not necessary until both BIOS chips are non-functional.

Option D: Thermal paste affects heat dissipation, not BIOS/boot behavior.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.5: Given a scenario, troubleshoot problems related to motherboards, RAM, CPU, and power.