Large electrical motors can emit electromagnetic interference (EMI), which can disrupt wireless signals and prevent connectivity.
From CompTIA A+ 220-1101 Official Study Guide, Objective 2.4 - Wireless troubleshooting:
"Sources of external interference such as motors or other electrical equipment can disrupt wireless network connectivity." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Troubleshooting CompTIA Exam Objectives 220-1101, Domain 2.4

The customer wants to consolidate multiple physical servers running different operating systems, including Windows, Linux, and Unix, while maintaining strong isolation between systems. CompTIA A+ identifies Infrastructure as a Service (IaaS) as the best model for hosting fully isolated virtual machines in a cloud environment, allowing each OS to run independently on its own virtual hardware.
IaaS provides virtualized computing resources-CPU, RAM, networking, and storage-while allowing the customer full control over the OS and application layer. This means Windows, Linux, and Unix VMs can coexist without compatibility concerns because each VM runs its native OS without modification.
Containers (B) are unsuitable because they share the host OS kernel, meaning they cannot run different OS families. A Type 2 hypervisor (C) is workstation-based and not designed for enterprise server consolidation.
VDI (D) provides user desktops, not server workload consolidation.
Thus, IaaS is the correct solution for compatibility, isolation, and consolidation across multiple OS types.

A DHCP reservation binds a specific MAC address to an IP address so the device always receives the same IP from the DHCP server. This ensures network devices like printers maintain consistent connectivity and availability even when the IP pool is low.
Reference: "CompTIA A+ Complete Study Guide" by Quentin Docter - Chapter 18, page 1252.

Port3389is used by the Remote Desktop Protocol (RDP) for remote desktop connections in Windows environments. This port allows remote control and management of systems across the network.
Reference:CompTIA A+ Certification Exam Core 1 Objectives - Domain 2.0 Networking - Objective 2.2:
Compare and contrast common networking hardware devices and ports.

CompTIA A+ teaches that the default gateway is required for any device to communicate with external networks such as the internet. Without a configured default gateway, the computer can communicate only with devices on the same local subnet explaining why the file server is reachable.
DNS and IPv6 settings are not the issue; without a gateway, external routing cannot occur. Flushing DNS affects hostname resolution, not routing. NetBIOS settings have no effect on internet connectivity.
Adding or correcting the default gateway (usually the router's LAN IP, such as 192.168.1.1) will allow the PC to route traffic beyond its local network.
This aligns precisely with CompTIA's troubleshooting steps for missing or incorrect gateway configuration.