100-140 Question 84
Select 2You are troubleshooting a power issue for an IT support ticket. A user reports that their desktop computer is not turning on, and you suspect the power cable may be the issue. Which of the following cables are commonly used to connect a desktop computer to a power source?
- A
C13/C14 power cable
- B
USB-C cable
- C
Barrel connector
- D
Lightning cable
- E
Two-prong power adapter (AC adapter plug)
Show answer and explanation
Correct answers: A, E
Explanation
Desktop computers typically use a C13/C14 power cable to connect the power supply unit to an AC power outlet. In some setups, a two-prong AC adapter plug may also be used for peripherals or specific designs. Understanding the correct type of power cables for different devices is essential for IT support technicians to resolve power-related issues effectively.
- A. Correct.
C13/C14 power cables are the most common type of power cable used for desktop computers. They connect the power supply unit (PSU) of the desktop to an AC power outlet.
- B. Incorrect.
USB-C cables are typically used for charging laptops, tablets, and mobile devices but are not used for desktop computers.
- C. Incorrect.
Barrel connectors are generally used for powering smaller electronic devices such as routers or some laptops, but not for desktop computers.
- D. Incorrect.
Lightning cables are proprietary to Apple devices (such as iPhones and iPads) and are used for charging and data transfer, not for powering desktops.
- E. Correct.
Two-prong power adapters or AC adapter plugs are commonly used for laptops and some desktop monitors. They can also be used in certain desktop setups, especially for peripherals or low-power devices.