CompTIA 220-1101 Actual Questions

A VLAN (Virtual Local Area Network) segments a physical network into separate logical networks, enhancing security by isolating traffic.

Why Not A (Minimizes collision domains): VLANs manage broadcast domains, not collision domains.

Why Not B (Provides private access to cloud resources): VLANs operate within a local network, not cloud-specific.

Why Not C (Increases network address space): VLANs do not affect address space.

CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.6, VLAN concepts​.

Comprehensive and Detailed In-Depth Explanation:

If a desktop fails to power on entirely, the most probable cause is a faulty Power Supply Unit (PSU). If there are no lights, fans, or POST beeps, the PSU may have failed, cutting off all power to the motherboard and components.

Option B (GPU): Could prevent video output, but the system would still power on and beep.

Option C (RAM): Missing or faulty RAM would cause POST errors but not prevent startup entirely.

Option D (CPU): A bad CPU may cause POST failure, but the system would usually at least power on.

CompTIA A+ Core 1 Exam Objective Reference:

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

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Comprehensive and Detailed In-Depth Explanation:

Thermal printers create images using a heated print head on specially coated thermal paper. Vertical white lines indicate that part of the heating element is dirty or blocked, preventing heat transfer to the paper. Cleaning the print head (heating element) will restore full functionality.

Option A: Thermal printers do not use ink or toner, so this is not applicable.

Option B: Wrong paper could cause blank output, but consistent vertical lines point to the print head.

Option C: Maintenance kits are typically for laser printers, not thermal printers.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.7: Given a scenario, troubleshoot common printer problems.

A VPN (Virtual Private Network) is the technology that allows a home PC to connect securely to a company's network over the internet. It extends a private network across a public network, enabling users to send and receive data as if their computing devices were directly connected to the private network. This makes VPNs ideal for remote work and accessing company resources securely from a home PC.