CompTIA A+ Core 1 (2022 series)624 questions across 63 pages are complete and free, with no account or card.
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Some keys on a user's laptop keyboard are sticking. Which of the following should the user use to clean the laptop keyboard?
Answer: B
Compressed air is ideal for dislodging dust, crumbs, and other debris that can accumulate under the keys, causing them to stick. It’s safe for electronic devices like laptops because it doesn't introduce moisture, which could damage the internal components.
Source: Adapted from community discussion — CloudChef
Which of the following should the label on a network jack faceplate refer to?
Answer: B
The label on a network jack faceplate should typically refer to: B. Patch panel port. The label on a network jack faceplate usually indicates the corresponding port on the patch panel where the network cable is terminated. This helps in identifying and tracing network connections from the endpoint (the network jack) to the network infrastructure, facilitating troubleshooting, maintenance, and organization of network infrastructure.
Source: Adapted from community discussion — Duke_CT
An administrator is using an RJ45 connector to terminate a network cable. Which of the following cables is the administrator terminating?
Answer: C
The administrator is terminating a Cat 6 (Category 6) cable. RJ45 connectors are commonly used for terminating Ethernet cables, including Cat 6 cables, which are widely used for high-speed network connections. Cat 6 cables are designed to support higher bandwidths and faster data transfer rates compared to previous generations of Ethernet cables, making them suitable for modern networking applications. Therefore, the correct answer is: C. Cat 6.
Source: Adapted from community discussion — Duke_CT
Which of the following protocols is the most appropriate to use for inventory tracking in a small warehouse?
Answer: B
For inventory tracking in a small warehouse, the most appropriate protocol to use is: B. Radio-frequency identification (RFID). RFID technology allows for the wireless transmission of data over short distances, making it ideal for inventory tracking applications in warehouses. RFID tags can be attached to inventory items, pallets, or containers, and RFID readers can be strategically placed throughout the warehouse to track the movement and location of items in real-time. This enables efficient inventory management, reduces manual tracking errors, and improves overall operational efficiency. Therefore, the correct answer is: B. Radio-frequency identification (RFID).
Source: Adapted from community discussion — Duke_CT
An administrator wants to replace a fiber-optic cable. Which of the following should the administrator most likely use?
Answer: A
A. LC Explanation: LC (Lucent Connector): This is a commonly used connector for fiber-optic cables. It's small and compact, making it ideal for high-density connections. Bayonet Neill Concelman (BNC): Used for coaxial cables, not fiber-optic cables. RJ45: Used for Ethernet cables (twisted pair), not fiber-optic cables. DB9: A 9-pin connector typically used for serial communication, not relevant to fiber-optic cables. Thus, LC is the most appropriate choice for replacing a fiber-optic cable.
Source: Adapted from community discussion — lara400
A technician is designing a new laptop for a local construction company. Company employees will move the laptop around frequently and are likely to drop the laptop while working. Which of the following drives should the technician install to mitigate for potential damage?
Answer: D
To mitigate potential damage from frequent drops, the technician should install: D. Solid-state drive (SSD). Solid-state drives (SSDs) are more durable than traditional hard disk drives (HDDs) because they have no moving parts. This means they are less susceptible to damage from shocks and drops, making them ideal for environments where laptops are moved around frequently and may be subject to rough handling, such as in a construction company. Therefore, the correct answer is: D. Solid-state drive (SSD).
Source: Adapted from community discussion — Duke_CT
The IT department at an insurance brokerage needs to acquire laptops that have built-in fingerprint readers in order to create a more secure environment. Which of the following would be the MOST secure way to implement the fingerprint readers?
Answer: B
When a user touches or swipes across an external touch screen, the image flickers but no input is registered on the presentation laptop. A technician verifies that the external touch screen appears free from physical damage. Which of the following should the technician do next?
Answer: B
Numerous vendors implemented a feature in routers and access points that allows for automatically moving wireless clients between 2.4GHz and 5.0GHz frequencies based on user density and the distance from the wireless equipment. Which of the following describes this feature?
Answer: D
The feature described, which automatically moves wireless clients between 2.4GHz and 5.0GHz frequencies based on user density and distance from the wireless equipment, is known as: D. Band steering. Band steering is a feature implemented in routers and access points to optimize wireless network performance by dynamically steering clients to the most appropriate frequency band (2.4GHz or 5GHz) based on factors such as user density and distance. This helps to balance client load across different frequency bands, improve overall network efficiency, and provide better performance for connected devices. Therefore, the correct answer is: D. Band steering.
Source: Adapted from community discussion — Duke_CT
A user's laptop is having performance issues when the user downloads large files over the internet. Other users with newer laptops are not experiencing any performance issues. Which of the following components should the technician replace?
Answer: B
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