CompTIA Updated 220-1201 Exam Questions and Answers by raisa

Overheating is a common cause of projectors shutting down after extended use. A clogged air filter can cause overheating, resulting in intermittent shutdowns.

From CompTIA A+ 220-1101 Official Study Guide, Objective 4.1 – Troubleshooting displays:

“If a projector shuts down after running for a period, clean or replace the filter to prevent overheating and automatic shutdown.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Display Troubleshooting

CompTIA Exam Objectives 220-1101, Domain 4.1

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Shielded Twisted Pair (STP) cabling is specifically designed to protect data transmissions from electromagnetic interference (EMI) and radio frequency interference (RFI). According to CompTIA Core 1 (220-1201) networking cabling objectives, STP cables include an additional shielding layer—either around individual wire pairs or the entire cable—that reduces the impact of external electrical noise.

In environments where network cables are installed near heavy machinery, fluorescent lighting, power cables, or radio transmitters, EMI can cause data corruption, retransmissions, and reduced network performance. STP helps maintain signal integrity in these high-interference environments.

Unshielded Twisted Pair (UTP) relies only on wire twisting to reduce interference and is more susceptible to EMI compared to STP. Thunderbolt and USB are peripheral interface standards, not structured network cabling solutions, and they are not intended for long-distance network installations.

CompTIA emphasizes selecting the appropriate cabling type based on environmental factors, particularly when interference is a concern. For locations with potential EMI, STP is the recommended choice.

Scan-to-email functions rely on the printer sending scanned documents to an email server. CompTIA A+ identifies SMTP (Simple Mail Transfer Protocol) as the protocol responsible for sending email messages from clients to mail servers. When configuring scan-to-email, the technician must enter:

SMTP server address

Authentication credentials

Port number (25, 465, or 587)

Encryption type (TLS/SSL)

Without SMTP, the printer cannot transmit emails.

SMS (A) refers to text messaging. SFTP (C) is secure file transfer, common for scan-to-folder workflows, not email. SMB (D) is used for Windows file sharing.

Therefore, the correct protocol is SMTP.

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.

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