NFC (Near-Field Communication)operates atvery short ranges - usually less than 4cm, and is ideal for quick, secure transactions like contactless payments.Bluetoothsupportslonger ranges (up to 10 meters or 32 feet)and is suited for ongoing connections like wireless headsets or file transfers.
Option A:Bluetooth is faster for large file transfers.
Option B:NFC usesless power, not more.
Option C:NFC doesnotrequire pairing - Bluetooth does.
CompTIA A+ Core 1 Exam Objective Reference:
Objective 1.5: Given a scenario, connect and configure accessories and ports of mobile devices.

A VLAN (Virtual Local Area Network) is a network technology used to logically segment a physical network into multiple distinct broadcast domains, even if they share the same hardware.
From the CompTIA A+ 220-1101 Official Study Guide, Objective 2.2 - Compare and contrast common networking hardware:
"VLANs allow network administrators to segment a network logically, isolating broadcast traffic and improving security and management, regardless of the physical network layout." Other options explained:
MAC (Media Access Control) is a hardware address, not a segmentation method.
NIC (Network Interface Card) is network hardware, not for logical segmentation.
DSL (Digital Subscriber Line) is an internet connection type.
Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 2: Networking Concepts CompTIA Exam Objectives 220-1101, Domain 2.2

If print quality remains poor after replacing the ink cartridge, the next step is to clean the printheads. Printheads can become clogged with dried ink, especially in inkjet printers, causing streaks or faded output.
From the CompTIA A+ 220-1101 Official Study Guide, Objective 4.3 - Troubleshoot printing problems:
"Poor print quality after replacing cartridges is commonly caused by clogged or dirty printheads. Use the printer's cleaning cycle or manually clean the printheads as needed." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Printer Troubleshooting CompTIA Exam Objectives 220-1101, Domain 4.3

Mobile Device Management (MDM) enables administrators to enforce controls on enterprise devices, such as restricting apps, ensuring compliance, and remotely managing security policies.
Why Not B (MFA): Multi-Factor Authentication secures user access but does not control device configurations.
Why Not C (VPN): VPN secures communication but does not enforce device controls.
Why Not D (SSL): SSL secures data in transit but does not provide device management.
CompTIA A+ Exam Reference: Core 2 (220-1102), Section 2.7, device management concepts.

When port issues persist after moving to a different switch port, the next logical troubleshooting step is to test the patch cable. Faulty or damaged cables are a common cause of network connectivity problems. Using a cable tester between the computer and the network closet verifies the integrity of the cable and rules out a physical layer issue.
From CompTIA A+ 220-1101 Official Study Guide, Objective 4.2 - Troubleshoot wired and wireless networks:
"If a device continues to experience connectivity issues after switching ports, test the cabling with a cable tester to check for continuity, shorts, or pinout issues before replacing hardware." Verified Source:
CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Troubleshooting Network Connectivity CompTIA Exam Objectives 220-1101, Domain 4.2