A firewall implements ACLs (Access Control Lists) to filter traffic and enforce policies based on rules such as IP address, port, or protocol.
Why Not A (Managed switch): A managed switch supports VLANs and QoS but does not enforce ACLs at the network perimeter.
Why Not B (Gateway): Gateways connect networks and translate protocols but don't typically implement ACLs.
Why Not C (Repeater): Repeaters extend signal range but don't enforce policies.
CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.2, firewall concepts.

Cable modems supplied by ISPs connect to the coaxial wall outlet using an F-type connector. CompTIA A+ specifies that F-type connectors are threaded coaxial connectors used in broadband cable internet, cable TV, and some satellite systems. They attach to RG-6 or RG-59 coaxial cable and provide a secure, shielded connection to the cable provider's infrastructure.
The cable modem requires this coaxial uplink to receive downstream and upstream signals from the ISP before converting them into Ethernet on the LAN side.
LC (B) is for fiber optic connectors, not coaxial. RJ45 (C) is an Ethernet connector and is used on the LAN side of the modem-not on the wall uplink. Lightning (D) is an Apple connector and irrelevant to networking hardware.
Thus, the correct connector for the ISP cable modem uplink is F-type.

An uninterruptible power supply (UPS) protects systems against power outages by providing temporary backup power, giving users time to save data and safely shut down.
From CompTIA A+ 220-1101 Official Study Guide, Objective 3.3 - Power protection:
"A UPS supplies backup power to prevent data loss and hardware damage during outages or surges, ensuring system integrity." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 3: Power Protection CompTIA Exam Objectives 220-1101, Domain 3.3

Comprehensive and Detailed Step-by-Step Explanation:
Random BSODs (Blue Screen of Death), intermittent freezing, and degraded performance under load are common symptoms of failing or faulty RAM (Random Access Memory). Here's the reasoning:
RAM Module (Correct Answer):
Faulty or failing RAM can cause random BSODs due to memory errors when the system attempts to read or write to corrupted memory locations.
Intermittent freezing, especially under performance-intensive operations, can occur because the CPU relies heavily on RAM for active processing tasks.
Over time, heat generated during usage can exacerbate RAM instability, leading to progressively worse performance throughout the day.
Solution: The technician should run a memory diagnostic tool, such as Windows Memory Diagnostic or MemTest86, to confirm if the RAM is at fault.
Incorrect Options:
A). Video Card: A faulty video card can cause graphical glitches, screen artifacts, or crashes, but it is unlikely to cause system-wide performance degradation and random freezing under normal operations unless the issue is specific to GPU-intensive tasks (e.g., gaming or video rendering).
B). HDD: A failing hard drive can cause system slowdowns and freezing, but it typically produces other symptoms such as read/write errors, boot failures, or clicking sounds. HDD issues do not usually cause BSODs unless critical system files are corrupted.
D). TPM (Trusted Platform Module): A TPM is a hardware-based security module used for encryption and secure authentication. It does not affect performance or cause BSODs or freezing under normal operation.
Key Takeaway:
The symptoms described (random BSODs, intermittent freezing, and degraded performance under load) are most likely caused by faulty or failing RAM. Memory diagnostic tools should be used to confirm the issue.
Reference: CompTIA A+ Core 1 Exam Objectives (220-1201), Domain 5.2 - Troubleshooting problems related to motherboards, RAM, CPUs, and power.

See the explanation below
Explanation:
solution as
A screenshot of a network settings AI-generated content may be incorrect.

A screenshot of a computer AI-generated content may be incorrect.

A screenshot of a computer AI-generated content may be incorrect.