Which of the following cloud-computing concepts describes an application that is hosted on the internet but can be used and configured as needed internally per organization?
A. Hybrid cloud
B. Public cloud
C. laaS
D. SaaS
E. PaaS
Correct Answer: D
Question 12:
A technician installed a high-end graphics card in a desktop, and now, the desktop randomly shuts down during operations. Which of the following should the technician do next?
A. Confirm the power supply is grounded.
B. Check the power supply wattage rating.
C. Check whether the power supply is redundant.
D. Confirm the power cables are well connected.
Correct Answer: B
The correct answer is B. Check the power supply wattage rating. A possible cause of the desktop randomly shutting down during operations is that the power supply is not able to provide enough power for the high-end graphics card. The power consumption of today's graphics cards has increased a lot, and the top models demand between 110 and 270 watts from the power supply1. Therefore, the technician should check the power supply wattage rating and make sure it is sufficient for the graphics card and the rest of the components. Confirming the power supply is grounded, checking whether the power supply is redundant, or confirming the power cables are well connected are not likely to solve this problem.
Question 13:
A server administrator is building a new application server. Which of the following, RAID levels provides MAXIMUM performance and redundancy?
A. RAID 0
B. RAID 1
C. RAID 5
D. RAID 10
Correct Answer: D
RAID 10 is a combination of RAID 1 and RAID 0, which provides both performance and redundancy. RAID 1 mirrors data across two or more disks, while RAID 0 stripes data across two or more disks. RAID 10 combines these two methods to create a mirrored stripe set, which can tolerate multiple disk failures as long as they are not in the same mirror. RAID 10 requires at least four disks and offers better performance than RAID 5, which uses parity to provide redundancy. References: https://www.comptia.org/blog/what-is-raid-0-1-5-6-10
Question 14:
Which of the following virtualization technologies allows Linux and Windows operating system to run concurrently?
Which of the following cables should be used to terminate ST connectors on each end?
A. Optical fiber
B. Coaxial
C. Shielded twisted pair
D. HDMI
Correct Answer: A
Optical fiber is the type of cable that should be used to terminate ST connectors on each end. ST connectors are commonly used for fiber optic cables, which transmit data using light pulses. Coaxial, shielded twisted pair, and HDMI are not types of cables that use ST connectors, but different types of connectors and transmission methods.
Question 16:
A technician is working on a desktop PC and wants to verify its NIC is functional. Which of the following should the technician use?
Which of the following handles touch-screen operation on a mobile device?
A. Stylus
B. Liquid crystal display
C. Processor
D. Digitizer
Correct Answer: D
A digitizer is a component that handles touch-screen operation on a mobile device. It is a layer of material that detects and converts the touch of a finger or a stylus into an electrical signal that can be processed by the device12. A digitizer works with a display screen to create a touch-screen interface that allows a user to interact with the device by touching pictures or words on the screen.
Question 18:
Which of the following wireless networking protocols will support both 2.4GHz and 5GHz devices?
A. 802.11ac
B. 802.11 ax
C. 802.11b
D. 802.11g
Correct Answer: B
802.11 ax is a wireless networking protocol that supports both 2.4GHz and 5GHz devices, as well as backward compatibility with previous 802.11 standards. 802.11 ax offers higher data rates, lower latency, increased capacity, and improved
power efficiency than previous protocols. It is also known as Wi-Fi 6 or High Efficiency Wireless (HEW).
A technician verifies the slow boot time and slow OS performance of a tower server with a RAID 5 on a PCIe RAID card that does not support hot swapping. Which of the following steps should the technician take NEXT to verify RAID health?
A. Verify S.M.A.R.T. operation on the RAID card.
B. Replace the failed drive while users are connected
C. Physically clean the HDDs and connectors.
D. Shut down the server and check the RAID controller's status.
Correct Answer: D
Since the RAID card does not support hot swapping, the technician needs to shut down the server and check the RAID controller's status to verify RAID health. S.M.A.R.T. is a feature of hard drives, not RAID cards. Replacing the failed drive while users are connected could cause data loss or corruption. Physically cleaning the HDDs and connectors is unlikely to solve the slow boot time and performance issues.
Question 20:
A service technician replaced the gateway, and a user is now unable to access the SOHO wireless network. Which of the following steps should the technician take to resolve the issue?
A. Assess the network cables for damage.
B. Disable Bluetooth connections.
C. Update the firmware.
D. Check if the password and SSID are correct
Correct Answer: D
Checking if the password and SSID are correct is the best step that the technician should take to resolve the issue of a user being unable to access the SOHO wireless network after replacing the gateway. The new gateway may have a different password and SSID than the old one, which would prevent the user from connecting to the wireless network. The technician should verify that the user has entered the correct password and SSID for the new gateway. Assessing the network cables for damage, disabling Bluetooth connections, or updating the firmware are not likely to solve the issue, as they are not related to the wireless network authentication
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