A fileshare becoming slow over time and then failing completely strongly suggests storage subsystem degradation, often due to a failing RAID array. CompTIA A+ explains that slow file access is an early sign of a degraded array, and eventual unavailability indicates the array may have failed or entered a critical state.
Since the technician can still RDP into the server, the OS is functioning, meaning memory is likely not the issue. Network connectivity is sufficient for remote login. Backup integrity does not affect real-time file availability.
Thus, the next step is to check the RAID array status, which directly controls the server's storage performance and availability precisely what CompTIA identifies as the primary point of failure in such scenarios.

When a workstation automatically assigns itself an IP address that is not part of the DHCP lease pool, the system has most likely configured an APIPA (Automatic Private IP Addressing) address. According to CompTIA Core 1 (220-1201) networking fundamentals, APIPA addresses fall within the range 169.254.0.0/16 and are assigned when a device cannot communicate with a DHCP server.
APIPA allows limited local network communication but does not provide access to the internet or network resources such as internal file shares that require routing or proper IP configuration. This explains why the workstation experiences connectivity issues.
A static IP address is manually configured and would not be automatically assigned. A DHCP address would come from the defined lease pool, which the technician has confirmed is not the case. A public IP address is assigned by an ISP and is not used directly on internal workstations.
CompTIA highlights APIPA as a key troubleshooting indicator of DHCP failure or network connectivity issues, making it the correct answer.

NVMe (Non-Volatile Memory Express) drives commonly use the M.2 interface and provide the highest performance for SSDs.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.2 - Storage devices:
"NVMe drives connect via the M.2 slot and provide the fastest data transfer rates available for storage devices." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Storage Technologies CompTIA Exam Objectives 220-1101, Domain 3.2

A hybrid environment combines both on-premises infrastructure and cloud-based resources, allowing virtual machines to operate seamlessly between the two. CompTIA A+ describes hybrid cloud as a deployment model where organizations maintain their own private servers or virtualization hosts while also leveraging public cloud platforms such as AWS, Azure, or Google Cloud. This model supports flexibility, scalability, and gradual migration, making it ideal for businesses not ready to fully abandon local infrastructure.
In this model, workloads can move between the local environment and the cloud depending on performance requirements, cost considerations, or redundancy needs. Additionally, hybrid clouds allow resource sharing, data synchronization, and load balancing across both environments.
A public cloud hosts resources entirely in the provider's data center, offering no on-premises integration. A private cloud exists solely within the organization's infrastructure with no external shared resources. SaaS delivers applications, not infrastructure, meaning it cannot host or manage virtual machines.
Therefore, an environment where VMs exist both on-site and in the cloud is best described as a Hybrid cloud.

In Wi-Fi, the 2.4GHz band contains 14 total channels (depending on region), but only channels 1, 6, and 11 are considered non-overlapping in most countries. CompTIA A+ highlights the importance of selecting these channels to minimize interference, especially in environments with multiple wireless networks or access points.
The 2.4GHz band is narrower than 5GHz, causing adjacent channels to overlap significantly. Using channels 1, 6, and 11 prevents overlap and reduces signal interference, improving performance and stability.
5GHz (B) has many non-overlapping channels and does not use the 1/6/11 scheme. The 6GHz band (C) is part of Wi-Fi 6E and uses entirely different channel planning. The 60GHz band (D) supports short-range high-speed connections like WiGig, not traditional Wi-Fi channels.
Therefore, the 2.4GHz band is the correct answer.