Anti-malware software is specifically designed to detect, quarantine, and remove malicious software from a system. It is the most appropriate tool for protecting a computer after a suspicious or infected file is downloaded.
"Anti-malware software scans downloaded files and running processes to identify and remove malicious software, providing real-time protection against viruses, trojans, and spyware." - CompTIA ITF+ Study Guide Other options:
* B. Firewall - Prevents unauthorized access but doesn't clean infections
* C. Patching - Prevents exploitation of known vulnerabilities, not infection removal
* D. Permissions - Limit access but do not remove malware
Correct answer: A

The requirement to change passwords every 60 days is a policy known as password expiration. It is part of enforcing secure authentication by limiting the amount of time a password is valid.
"Password expiration is a security measure that requires users to change their passwords after a specific period, such as every 60 or 90 days, to reduce the risk of compromised credentials being used over time." - CompTIA ITF+ Official Guide
* Password complexity refers to rules about what characters are required.
* Password management refers to overall policies and tools for handling passwords.
* Password privacy relates to confidentiality but not periodic resets.
Thus, the correct choice is C.

According to the CompTIA Tech+ Study Guide (Exam FC0-U71, 3rd Edition, 2025):
"A crimper is used to attach modular connectors, such as RJ45 or RJ11, to network or phone cables. The crimper pushes the metal contacts into the wires, securing them in place." Punchdown tools, by contrast, are used for patch panels or keystone jacks, not RJ45 ends.
Verified Reference:
* Chapter 2: Peripherals and Connectors - "Networking Tools: Crimpers, Punchdown Tools, Cable Testers" (pp. 106-108).

In terms of storage measurement hierarchy:
* 1TB = 1,000GB
* 1GB = 1,000MB
* 1MB = 1,000KB
Therefore:
* 20TB = 20,000GB
* 2,000GB = 2,000GB
* 200MB = 0.2GB
* 2,000KB = 0.002GB
Thus, 20TB is the largest. The CompTIA ITF+ FC0-U71 Official Study Guide defines storage units in this way under data representation topics.
Reference: CompTIA ITF+ FC0-U71 Official Study Guide, Chapter 3 - Data Representation and Storage.
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The correct answer is A. CPU. The CPU, or central processing unit, is the processor that controls and directs computer activities. The operating system provides instructions, and the CPU processes them. An HDD stores data, RAM temporarily stores active data and instructions, and a NIC provides network connectivity. Only the CPU executes instructions.
Exact Extract/Reference: The CompTIA Tech+ Study Guide states that the role of the CPU is "to control and direct all the activities of the computer" and that the terms "processor" and "CPU" are interchangeable. It also explains that the processor "just does what it's instructed to do."