The CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025) defines the least privilege model as:
"One of the key foundations of an authorization system is the least privilege model. This states that users should be granted only the least amount of access required to perform their jobs, and no more. This principle applies to computers, files, databases, and all other available resources." This concept ensures that a student cannot access restricted folders such as a teacher's network folder, because their role does not require that level of access.
Verified Reference:
* Chapter 10: Security Concepts and Threats - "Authorization and the Least Privilege Model" (pp. 549-
550).

The correct answer is A. To present identical content on multiple displays. Display mirroring is used when the same screen image must appear on more than one display, such as a laptop screen and a projector in a conference room. This is useful for presentations because the audience sees the same content the presenter sees. Mirroring does not improve cloud speed, add security by itself, or share files from network-attached storage.
Exact Extract/Reference: The Tech+ Study Guide explains that when "two or more displays are used at the same time to project the same image, that is called mirroring." It also states that "all actions performed on one display" are shown on the mirrored display.

The correct answer is B. Hypervisor. A hypervisor is the software layer that enables virtualization. It allows multiple virtual machines or guest operating systems to share the same physical computer and controls how physical resources such as CPU, memory, storage, and networking are assigned to those virtual systems. A guest OS uses the resources assigned to it but does not manage the overall allocation. PaaS and SaaS are cloud service models, not the virtualization component that allocates virtual computer resources.
Exact Extract/Reference: The Tech+ Study Guide states that the hypervisor is "also known as a virtual machine manager (VMM)" and "manages the physical resource allocation" to virtual operating systems. The Exam Essentials also states that a hypervisor "allows multiple operating systems to share the same host" and manages physical resource allocation.

The correct answer is B. Firewall. A firewall filters network traffic based on configured rules. To disallow inbound file-sharing connections, the firewall can block the relevant inbound traffic. Anti-malware scans for malicious software, multifactor authentication verifies identity, and certificates help establish trust or encryption, but a firewall is the correct control for blocking inbound network connections.
Exact Extract/Reference: The CompTIA Tech+ Study Guide states that firewalls "filter inbound and outbound network traffic based on rules defined by the administrator." It also explains that host-based firewalls protect one computer and that Windows includes Microsoft Defender Firewall. The guide further explains that firewall ACLs determine which traffic is passed and which traffic is blocked.

The CompTIA Tech+ Study Guide explains:
"A compiled programming language is one that requires the use of a compiler to translate it into machine code. Creating and using a program using a compiled language consists of three steps:
* Write the source code.
* Use a compiler to translate the source code into machine code.
* Execute the program file, which usually has an .exe extension."
Compiled languages package programs into executable files.
Verified Reference:
* Chapter 6: Software Development Concepts - "Compiled Languages" (pp. 361-363).