A managed switch allows an administrator to enable or disable individual ports as part of network security and management. If a port on a managed switch has been disabled, the device connected to that port will lose connectivity, which matches the scenario described.
Reference: CompTIA A+ Certification Exam Core 1 Objectives - Domain 2.0 Networking - Objective 2.2:
Compare and contrast common networking hardware devices.

Excessive heat buildup due to insufficient cooling is a primary cause of unexpected shutdowns. A high- performance heat sink improves thermal transfer, dissipates more heat, and helps maintain CPU temperature within safe limits. When CPU temperatures reach levels like 208°F (98°C), the system may shut down to prevent damage.
Reference: "CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 1, pages 68-71, discusses CPU cooling and heat sink improvements.

When migrating large volumes of data to a cloud provider, CompTIA A+ notes that the transfer speed is dominated by the WAN (internet) connection speed. Among the given options, fiber-optic internet (C) provides the highest upload and download throughput, often delivering speeds from 1 Gbps to 10 Gbps or more, depending on the service. Fiber supports symmetrical upload speeds, which is critical because data migration requires heavy upstream bandwidth.
Coaxial (A) and DSL (B) offer much lower upstream speeds-often under 30 Mbps-making them too slow for large-scale cloud migration. A SAN (D) is a local storage network that operates within the data center; it does not provide a path to the cloud and cannot replace an internet connection.
Fiber's extremely high capacity, low latency, and resistance to electromagnetic interference make it the best and most efficient option for cloud migration performance.

Wireless coverage issues at the physical edges of a building are typically caused by weak RF signal strength.
The CompTIA A+ study material says the best solution is to add additional wireless access points (APs) or implement a mesh system to extend coverage and eliminate dead zones.
Enabling 5GHz often worsens the issue because 5GHz has shorter range. Wi-Fi 6 NIC upgrades improve performance but do not increase signal reach. Flushing DNS does not affect wireless coverage.
Installing more APs ensures stronger coverage, better signal-to-noise ratio, and stable connectivity aligning with CompTIA's wireless troubleshooting best practices.

To allow multiple users to print to networked printers:
Printer shares enable users to access printers shared on the network.
Print servers manage print jobs and provide centralized control of printing.
Why Not B (DHCP server): DHCP is unrelated to print management.
Why Not D (Printer subnet): Subnets group devices but don't manage printing.
Why Not E (SMB configuration): SMB is for file sharing, not specifically print management.
Why Not F (Printer Wi-Fi settings): These settings are irrelevant since the printers use Ethernet.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 4.6, printer configuration.