Pass the CompTIA A+ Core 1Exam (2025) 220-1201 Questions and answers with ValidTests

If users canaccess local network resourcesbut not theinternet, the most likely culprit is amisconfigured or missing default gateway. The default gateway routes traffic from the local network to external networks (i.e., the internet). If it’s not properly set or was altered during a firewall update, internet traffic won’t be forwarded correctly.

Option A:Static IPs could cause conflict, but wouldn't affect only external access if configured correctly.

Option C:An incorrect subnet mask could isolate devices, but local communication would likely be impacted too.

Option D:VLANs segment networks; while misconfigured VLANs could cause access issues, they’d more likely isolate local traffic as well.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 2.6: Given a scenario, configure and troubleshoot network connectivity.

SMB (Server Message Block)is a protocol used to access files and printers over a network, including across shared network folders. It enables the user to access and print files stored remotely on a shared directory.

Option A (ADF):Automatic Document Feeder — hardware, not a network protocol.

Option B (USB):Used for direct physical connections, not for printing over networks.

Option C (PCL):Printer Command Language — relates to printer drivers, not file sharing or access.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 3.4: Given a scenario, install and configure printers.

A screenshot of a computer AI-generated content may be incorrect.

A hypervisor is software or firmware that allows multiple operating systems (virtual machines) to run on a single physical host. It manages the allocation of resources and isolation of each VM.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.7 – Virtualization concepts:

“A hypervisor is the key component of virtualization, enabling a physical server to host multiple virtual machines (VMs), each with its own OS and resources.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Virtualization

CompTIA Exam Objectives 220-1101, Domain 3.7

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Quality of Service (QoS) prioritizes VoIP traffic on the network, reducing jitter, latency, and packet loss to improve call quality.

From CompTIA A+ 220-1101 Official Study Guide, Objective 2.4 – Network troubleshooting:

“Enabling QoS in the router ensures time-sensitive traffic, like VoIP, receives network priority, reducing dropped or lagging calls.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Network Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 2.4

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Port flapping refers to a network port continuously going up and down, which can prevent the access point from fully coming online.

From CompTIA A+ 220-1101 Official Study Guide, Objective 2.4 – Wired and wireless troubleshooting:

“Repeated loss and restoration of network link is called port flapping and may result in network devices, such as access points, not coming online.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Network Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 2.4

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ECC (Error-Correcting Code) RAM is commonly used in servers because it can detect and correct memory errors, providing greater stability and reliability for mission-critical environments.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.2 – Types of RAM:

“Servers often require ECC memory, which can detect and correct single-bit errors, preventing data corruption and increasing system reliability.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Memory Technologies

CompTIA Exam Objectives 220-1101, Domain 3.2

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An older HDMI cable version may not support 4K resolution. For 4K output, both the device and the cable must support HDMI 2.0 or higher.

From CompTIA A+ 220-1101 Official Study Guide, Objective 3.1 – Display troubleshooting:

“Ensure the correct version of HDMI cable is used for high-resolution outputs like 4K. Older cables may be limited to 1080p.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Display and Video

CompTIA Exam Objectives 220-1101, Domain 3.1

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Plenum cabling is designed for use in commercial spaces where cables run through air ducts or plenum spaces, as it has fire-resistant properties and emits less toxic smoke.

Why Not A (USB 3.1 Gen 2): USB is for peripheral connections, not large-scale commercial installations.

Why Not B (Straight tip fiber connector): Fiber connectors are for high-speed connections but are not specifically for commercial spaces.

Why Not D (Cat 8): While Cat 8 is high-speed, it is not uniquely suited for commercial spaces like plenum cabling.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 3.1, cabling standards​.

A. Run the maintenance application:

Most modern printers include a built-in maintenance application that can calibrate the print heads and correct alignment issues. Running this tool is the first step to address misalignment.

Incorrect Options:

B. Clean the rollers: Cleaning rollers is typically done to resolve paper feed or jamming issues, not alignment problems.

C. Upgrade the firmware: While updating firmware is beneficial for performance improvements, it is not the first step for fixing alignment.

D. Reinstall the drivers: Misaligned printing is usually hardware-related, not a driver issue.

Key Takeaway: The maintenance application should be run first to resolve alignment issues in a newly installed printer.