CompTIA CompTIA A+ Core 1 Exam (2026) 220-1201 Exam Dumps: Updated Questions & Answers (June 2026)

The correct answer is D. Dual channel .

In the CompTIA A+ Core 1 (220-1201) hardware objectives, memory bandwidth refers to the amount of data that can be transferred between RAM and the CPU in a given amount of time.

Dual channel memory architecture increases bandwidth by:

Allowing the memory controller to access two memory modules simultaneously

Effectively doubling the data transfer rate compared to single-channel configurations

Improving overall system performance, especially in memory-intensive tasks

Why the other options are incorrect:

A. CAS latency

CAS latency measures the delay before data is available after a request. Lower latency improves response time, but it does not significantly increase total bandwidth.

B. ECC

ECC (Error-Correcting Code) improves reliability by detecting and correcting errors, but it does not increase data transfer bandwidth.

C. High clock speed

Higher clock speed does increase bandwidth, but not as significantly as enabling dual channel , which allows parallel data transfer paths and provides a greater overall increase.

Final Answer: D. Dual channel

The correct answer is B. Change the resolution .

According to the CompTIA A+ Core 1 220-1201 objectives, troubleshooting display issues involves checking the display settings, including resolution, scaling, and orientation. When a projector is only showing part of a laptop screen:

The most common cause is that the laptop’s output resolution does not match the projector ' s native resolution. If the laptop is set to a resolution larger than what the projector supports, only a portion of the screen is visible.

The technician should first adjust the laptop ' s resolution to match the projector’s native resolution before attempting other options like extending or mirroring the desktop.

Why the other options are incorrect:

A. Extend the desktop : This is only used if the user wants to have two separate screens (dual monitors), not to fix partial display issues.

C. Mirror the desktop : Mirroring duplicates the laptop display but does not solve issues caused by resolution mismatch.

D. Switch the input source : Necessary only if the projector is on the wrong input, but the problem here is a partial display, not no display.

Answer of both steps below.

A group of wires with different colors AI-generated content may be incorrect.

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

B. Correct the keystone:

A keystone correction adjusts the image shape when a projector is angled either up or down. When a projector is not positioned directly perpendicular to the screen, the image becomes distorted or offset. Correcting the keystone will resolve alignment issues, ensuring that the presentation matches the display.

Incorrect Options:

A. Adjust the color settings: This is used for improving color balance and has no impact on ghosting or mismatched images.

C. Increase the brightness levels: Brightness changes the visibility of the image but does not address ghosting or alignment.

D. Replace the monitor: Replacing the monitor is unnecessary unless there is hardware failure, which is not indicated here.

Key Takeaway: Keystone correction is essential to resolve alignment and distortion issues in projected images.

A shutdown during POST combined with a burning smell strongly indicates an overheating condition occurring almost immediately after power-on. In a newly built workstation, the most common cause of rapid CPU overheating is improper heatsink installation, especially failing to apply thermal paste (thermal compound) between the CPU and the heatsink. Thermal paste fills microscopic imperfections between the two metal surfaces so heat can transfer efficiently into the heatsink. Without it, the CPU can spike to unsafe temperatures within seconds. Modern systems detect this and trigger protective thermal shutdown during POST to prevent permanent CPU or motherboard damage. The burning smell can occur when components near the CPU socket heat excessively or when protective coatings/dust residues warm quickly due to poor heat dissipation.

The wrong type of RAM (B) would more likely cause no-boot/beep codes rather than a burning smell. Not properly grounding (A) relates to ESD damage risk, but that typically causes intermittent or dead hardware symptoms, not immediate thermal shutdown. A disconnected case exhaust fan (C) can contribute to higher case temperatures, but it’s less likely to cause an immediate POST shutdown compared to missing thermal paste on the CPU cooler.

Mobile Device Management (MDM) enables administrators to enforce controls on enterprise devices, such as restricting apps, ensuring compliance, and remotely managing security policies.

Why Not B (MFA): Multi-Factor Authentication secures user access but does not control device configurations.

Why Not C (VPN): VPN secures communication but does not enforce device controls.

Why Not D (SSL): SSL secures data in transit but does not provide device management.

CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.7, device management concepts​.

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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APrivate Cloudis operated solely for a single organization. It ishosted on-premises or in a dedicated off-site data center, giving the company full control over data, security, and compliance often hosted in theorganization’s own local data center.

Option B (Public):Hosted by third-party providers and shared by multiple clients.

Option C (Hybrid):Combines private and public cloud resources.

Option D (Community):Shared by several organizations with similar goals.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 4.1: Compare and contrast cloud computing concepts.

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The correct answer is A. Liquid cooling .

High CPU utilization and intensive graphics workloads generate significant heat. According to CompTIA A+ Core 1 220-1201 hardware objectives, ensuring proper thermal management is crucial for system stability and performance.

Liquid cooling provides more efficient heat dissipation than standard air cooling, allowing CPUs and GPUs to maintain optimal performance under heavy load and preventing thermal throttling. This is especially beneficial in gaming, video editing, rendering, or scientific computation workloads.

Why the other options are incorrect:

B. Advanced RISC : Refers to a type of processor architecture optimized for efficiency and specific instruction sets but does not directly address heat or cooling in high-utilization systems.

C. x86 processor : This is a general processor architecture; while important, it does not mitigate heat or improve cooling under heavy CPU/GPU usage.

D. Hardware security module : Focused on cryptographic operations and secure key storage, unrelated to CPU or GPU thermal management.

The correct answer is D. SMTP (Simple Mail Transfer Protocol) .

According to CompTIA A+ Core 1 220-1201 objectives under Networking:

SMTP is the standard protocol used to send emails from a client to a mail server or between servers.

POP3 (Post Office Protocol 3) and IMAP (Internet Message Access Protocol) are used for receiving emails , not sending them.

LDAP (Lightweight Directory Access Protocol) is used for accessing and managing directory services, such as authentication and organizational information, not for email transport.