Changed 220-1201 Exam Questions

CompTIA A+ explains that DMARC (Domain-based Message Authentication, Reporting, and Conformance) relies on TXT DNS records to define its policies. TXT records allow administrators to publish arbitrary text-based configuration data, including DKIM and SPF policies, which DMARC references.

MX records identify mail servers, A records map IP addresses, and CNAME records create aliases none are used to store DMARC policy rules.

DMARC improves email authenticity by requiring SPF and DKIM alignment and specifying how receiving servers should handle failed validations. The A+ exam explicitly mentions TXT records as the method used for SPF, DKIM, and DMARC storage.

Therefore, the correct answer is the TXT record, which stores the policy used by DMARC to authenticate senders and prevent spoofing.

If only one key is not functioning and debris has been checked, replacing the individual keycap is the most cost-effective next step. It ' s a simple, low-cost option before considering more extensive repairs like replacing the entire keyboard.

Adocking stationconnects to a laptop’sproprietary port or USB-C/Thunderbolt, providing access tomultiple additional ports(USB, Ethernet, video, audio, etc.). It allows users to transform a laptop into a full desktop workstation.

Option A (NFC adapter):Used for short-range communication, not port expansion.

Option C (Port replicator):Similar to a dock but usually less powerful and often lacks charging or video output.

Option D (USB dongle):Adds a single function (like Wi-Fi or storage), not full port expansion.

CompTIA A+ Core 1 Exam Objective Reference:

Objective 1.4: Given a scenario, configure settings and use cases for laptops and mobile devices.

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A Storage Area Network (SAN) is primarily used for data archiving and large-scale storage. SANs provide high-speed, block-level storage for enterprise environments.

Why Not A (PAN): Personal Area Networks are for connecting personal devices like phones and smartwatches.

Why Not B (MAN): Metropolitan Area Networks are for city-wide data communication, not storage.

Why Not D (LAN): Local Area Networks are for general connectivity, not dedicated storage.

Why Not WAN: Wide Area Networks are for connecting geographically dispersed networks, not storage.

CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.7, network types and purposes​.