1. A technician is replacing the motherboard of a workstation for a user who runs multiple large applications at the same time. Which of the following motherboard specifications would provide the most significant improvement in performance?
A. Number of DMAI slots
B. Number of HDMI ports
C. Number of PCI slots Correct
D. Number of USB ports
Explanation
The number of PCI slots directly impacts the ability to add expansion cards, such as additional GPUs, high-speed network cards, or storage controllers, which can significantly enhance performance for multitasking and running large applications. DMA slots are not a standard motherboard specification. HDMI ports are for video output and do not affect application performance. USB ports are for peripherals and offer minimal performance gain for core computing tasks.
2. Which of the following components converts light into a digital signal?
A. Inverter
B. OLED
C. Digitizer
D. Webcam Correct
Explanation
A webcam contains a sensor, typically a CMOS or CCD, that captures light and converts it into a digital signal for processing and transmission. An inverter is used to provide power to the backlight in an LCD display. OLED is a display technology that emits light and does not convert it. A digitizer converts touch analog signals into digital data, not light.
3. A user has noticed high CPU temperatures when gaming. The user would like to lower the CPU temperature, and cost is not an issue. Which of the following should the user do to best cool the CPU while keeping noise to a minimum?
A. Upgrade the Remmi paste.
B. Use a copper heat sink.
C. Upgrade the CPU fan.
D. Install liquid cooling. Correct
Explanation
Liquid cooling systems, especially all-in-one (AIO) closed-loop systems, offer superior heat dissipation compared to air coolers. They are highly effective at transferring heat away from the CPU and maintaining lower temperatures under heavy loads like gaming. Because they use a larger radiator for heat exchange, the fans can run at lower RPMs, resulting in significantly quieter operation than high-performance air coolers with loud fans. Replacing thermal paste or using a copper heatsink offers minor improvements but is insufficient for high heat loads. Upgrading the CPU fan may improve cooling but often increases noise.
4. A technician recently received a written warning for causing a system-wide outage. The outage was a result of an unattributed patch being manually pushed during production hours. Which of the following could have most likely prevented the technical from receiving the warning?
A. Following corporate procedures Correct
B. Validating a rollback plan
C. Documenting the findings
D. Establishing a plan of action
Explanation
Corporate procedures typically mandate that changes, especially patches, are not deployed during production hours and require proper testing, approval, and change management processes. Adhering to these procedures would have prevented the unauthorized and ill-timed patch deployment that caused the outage. While a rollback plan, documentation, and a plan of action are important aspects of change management, the core failure was the violation of the fundamental rule against making changes during production without authorization.
5. A user is attempting to connect a streaming media device to a hotel's free wireless Internet. However, the user is unable to pass through the captive portal. Which of the following would **meet** likely allow the user to connect the device to the internet?
A. Connecting to the hotspot on the user's device Correct
B. Obtaining the Wi-Fi security on the device
C. Asking the hotel to disable the captive portal on the Wi-Fi
D. Adjusting the date and time stamps on the device to reflect another country
Explanation
Many streaming devices lack a web browser, which is required to interact with a captive portal login page. Using the personal hotspot feature on a smartphone (or other device) that has already authenticated with the hotel's Wi-Fi allows the streaming device to connect to the internet through the smartphone's shared connection, bypassing the need for the streaming device itself to handle the captive portal. Obtaining security details doesn't help if a portal is present. Hotels are unlikely to disable their security portal. Adjusting date and time is irrelevant to network authentication.