CompTIA 220-1101 Exam Practice Questions (P. 2)

GPT-4o - Answer

HDMI (High-Definition Multimedia Interface) supports both video and audio transmissions in a single cable and is widely used for connecting devices like PCs to projectors. This makes HDMI the probable fix if a projector displays video without audio during a presentation. Options involving VGA and DVI inputs or a change in refresh rate won't solve an audio issue, as they mainly relate to video quality and integrity.

GPT-4o - Answer

If a computer is limited to a 100Mbps data transfer rate despite having a gigabit LAN card, the likely culprit is the use of a Category 5 (Cat 5) network cable. This type of cable can only support data transfer speeds up to 100 Mbps, thereby preventing the computer from reaching speeds that the Gigabit LAN card is capable of, such as 1000 Mbps provided by Cat 5e and higher categories. Upgrading to a newer category of network cable would be advisable to utilize the full capacity of the gigabit LAN card.

GPT-4o - Answer

When dealing with webcam issues in a videoconferencing software where the webcam was previously operational, begin by ensuring no other programs are using the webcam. Multiple applications accessing the same webcam can cause conflicts, preventing the conference software from accessing it. Closing other software that might be utilizing the webcam often resolves this issue efficiently, without necessitating hardware modifications or configurations adjustments. This initial troubleshooting step is simple yet effective in most cases where the camera functioned correctly before encountering the problem.

GPT-4o - Answer

To access the building, the mobile device must be enabled with NFC (Near Field Communication), as it specifically operates using the 13.56MHz frequency, aligning with the updated security frequency requirements at the entrance. This ensures that the authentication method is compatible with the secure access protocol implemented.

GPT-4o - Answer

802.11n, often referred to as Wi-Fi 4, officially supports MIMO technology, which fundamentally enhances wireless network efficiency and signal strength. MIMO (Multiple-Input Multiple-Output) utilizes multiple transmitter and receiver antennas, allowing for increased data throughput and improved communication reliability. This is particularly beneficial in environments where high data rates and improved signal quality are essential. The adoption of MIMO technology was a significant advancement from previous standards such as 802.11a, 802.11b, and 802.11g, which do not support MIMO.

GPT-4o - Answer

Absolutely, B is the spot-on answer here. When both the PC and monitor are on but with no input detected, the quickest check is to ensure the monitor is set to the right input source. It's a simple yet effective solution that often fixes these kinds of issues. Just cycle through the input options or double-check it's correctly set to the port the PC is connected to. It’s usually the first thing to rule out before delving into more complex troubleshooting.

GPT-4o - Answer

The digitizer is the essential component that translates the user's touch into digital signals the device can understand and respond to. It operates directly below the screen and is the technology that detects and processes touch interactions. Unlike other components mentioned, such as the OLED, which is for display, or the CMOS sensor, which captures images, the digitizer's unique function is to enable touch input, making the device interactive.

GPT-4o - Answer

Three loud, consecutive beeps during startup typically indicate a memory-related issue, specifically concerning the RAM. This beep code is a diagnostic signal provided by most BIOS manufacturers. Reseating the RAM involves removing it from its slot, checking for any damage or dust on the contacts, and securely placing it back. This ensures that the connection is not only clean but also firm, essentially remedying the initial detection problem by the system's POST (Power-On Self-Test) process. This action is usually successful in resolving such beep-code issues, unless the RAM module itself is faulty, in which case replacement might be necessary.