Clock frequency is one of the most significant factors influencing a computer system's processing performance. According to CompTIA Core 1 (220-1201) CPU and performance objectives, clock speed- measured in gigahertz (GHz)-determines how many instruction cycles a processor can perform per second.
Higher clock frequencies generally result in faster execution of instructions, leading to improved performance in both single-threaded and multi-threaded workloads. While modern CPUs also rely on core count, cache size, and architecture efficiency, clock frequency remains a primary metric for evaluating raw processing speed.
An integrated GPU affects graphics performance rather than overall CPU processing capability. Power connectors ensure proper electrical delivery but do not directly improve processing performance. The voltage regulator module (VRM) stabilizes and regulates power supplied to the CPU but does not itself increase processing speed.
CompTIA expects candidates to recognize clock frequency as a key determinant of CPU performance when upgrading or comparing processors.
References:CompTIA A+ Core 1 (220-1201) Official Study Guide - CPU Architecture and Performance

Platform as a Service (PaaS) is designed to host and run applications while the cloud provider manages the underlying infrastructure and operating system. With PaaS, an organization deploys its internal application code (and often configures runtime settings), but does not handle OS installation, patching, hardening, or most server maintenance tasks. This aligns with CompTIA A+ Core 1 cloud concepts that compare service models by responsibility: as you move from IaaS to PaaS to SaaS, the provider manages more of the stack.
IaaS (Infrastructure as a Service) provides virtualized compute, storage, and networking, but the customer still manages the OS, updates, drivers, and the application stack-so it does not meet the "without managing the underlying OS" requirement. SaaS (Software as a Service) delivers a complete finished application to users (like email or CRM), which typically doesn't fit hosting a custom internal application you develop. UCaaS focuses on communication services (voice, video, messaging) rather than general application hosting.
Therefore, PaaS is the best option for hosting an internal application without managing the underlying OS.

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

When both charging and dock-connected peripherals fail at the same time, the problem is most likely with the dock itself or its internal controller circuitry rather than the laptop's operating system or a single peripheral device. The technician has already verified key prerequisites: the dock has power, the laptop ports show no physical damage, and system firmware (BIOS/UEFI) is current. Those checks reduce the likelihood of a simple firmware incompatibility or a damaged laptop connector.
In CompTIA A+ troubleshooting methodology, the next step is to substitute with a known-good component to isolate the fault quickly. Replacing (or testing with) another dock confirms whether the original docking station has failed. If the replacement dock restores charging and peripherals immediately, the root cause is confirmed without unnecessary invasive actions.
Switching the power supply could be a valid step if power was questionable, but the prompt states the dock already has power and still provides no function-pointing to dock failure. Reinstalling the OS is excessive and unlikely because charging through a dock is not primarily OS-dependent. Rolling back BIOS updates is also not indicated because the issue persists despite current firmware and there is no evidence the BIOS update caused it.

When troubleshooting intermittent latency to a remote internal resource, CompTIA A+ recommends using tools that help identify where latency occurs and whether it is consistent or fluctuating over time. The best tools for this scenario are ping -t and tracert.
Ping -t (B) sends continuous ICMP echo requests, allowing the technician to observe packet loss, fluctuating response times, or timeouts. This helps identify intermittent connectivity problems that occur at specific times, such as bandwidth congestion, routing instability, or wireless interference.
Tracert (F) maps each hop between the local workstation and the remote office. If latency spikes occur only after a particular hop-such as a VPN tunnel, MPLS gateway, or inter-office router-that device becomes the suspected bottleneck. This makes tracert essential for isolating WAN-related slowdowns.
Ipconfig /all (A) only provides local configuration and does not diagnose latency. Nslookup (C) is for DNS testing-not latency to a specific internal host. Examining switchports (D) helps with local issues but not remote latency. QoS (E) is a solution, not a troubleshooting step. Calling ISP (G) may be premature unless testing confirms ISP-related issues.
Thus, ping -t and tracert are the correct diagnostic tools.