CompTIA CompTIA Certifications 220-1101 Questions & Answers

• Question 521:

  A user purchased a new smartphone and headset and is trying to connect them. Which of the following is the best way to connect the devices?

  A. Enable pairing.

  B. Use a hotspot.

  C. Use NFC.

  D. Enable synchronization.

  Correct Answer: A

  Explanation: The best way to connect the devices is A. Enable pairing.

  Pairing is a process that allows two Bluetooth devices, such as a smartphone and a headset, to communicate with each other wirelessly. Pairing creates a secure connection between the devices and allows them to exchange data and audio signals. To pair the devices, the user needs to enable Bluetooth on both devices, make them discoverable, and select the desired device from the list of available devices. The user may also need to enter a PIN code or confirm a passkey to complete the pairing process . The other options are not the best ways to connect the devices. A hotspot is a feature that allows a smartphone to share its cellular data connection with other devices via Wi-Fi, Bluetooth, or USB. A hotspot can provide internet access to other devices, but it does not allow them to communicate with each other directly. NFC stands for Near Field Communication, which is a technology that allows two devices to exchange data by bringing them close together (usually within 4 cm). NFC can be used to initiate pairing between two Bluetooth devices, but it cannot establish a connection by itself. Synchronization is a process that allows two devices to update and match their data, such as contacts, calendars, photos, or music. Synchronization can be done via Wi-Fi, Bluetooth, USB, or cloud services, but it requires an existing connection between the devices.

• Question 522:

  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 DIMM slots

  B. Number of HDMI ports

  C. Number of PCI slots

  D. Number of USB ports

  Correct Answer: A

  Explanation: The correct answer is A. Number of DIMM slots. The number of DIMM slots on a motherboard determines how much RAM can be installed on the system. RAM is a crucial component for running multiple large applications at the same time, as it allows the CPU to access data faster and avoid swapping to the hard drive. Having more DIMM slots means that more RAM can be added, which can improve the performance and responsiveness of the system. B. Number of HDMI ports. This is not a correct answer. The number of HDMI ports on a motherboard determines how many monitors can be connected to the system. HDMI ports are used for video and audio output, but they do not affect the performance of the system when running multiple large applications.

  C. Number of PCI slots. This is not a correct answer. The number of PCI slots on a motherboard determines how many expansion cards can be installed on the system. PCI slots are used for adding devices such as sound cards, network

  cards, or graphics cards, but they do not affect the performance of the system when running multiple large applications.

  D. Number of USB ports. This is not a correct answer. The number of USB ports on a motherboard determines how many peripherals can be connected to the system. USB ports are used for connecting devices such as keyboards, mice,

  printers, or external drives, but they do not affect the performance of the system when running multiple large applications.

  Reference: Best motherboards 2022: the best motherboards for Intel and AMD - TechRadar1.

• Question 523:

  An online retailer is working to support increased sales and boost server capacity by installing additional servers. Which of the following should be used to ensure each new server will be properly utilized?

  A. Virtualization

  B. DNS

  C. Clustering

  D. Load balancer

  Correct Answer: D

• Question 524:

  Which of the following server roles does RADIUS perform?

  A. DNS

  B. AAA

  C. Mail server

  D. Syslog

  Correct Answer: B

  Explanation: AAA stands for Authentication, Authorization, and Accounting, and it is a framework that provides security services for network access control. Authentication verifies the identity of a user or device that requests access to a network resource. Authorization determines what level of access or privileges are granted to a user or device based on their identity or role. Accounting tracks and records the usage of network resources by users or devices for billing or auditing purposes. RADIUS (Remote Authentication Dial-In User Service) is a protocol that implements AAA functions by communicating with a central server that stores user credentials and policies.

• Question 525:

  Which of the following provides the highest level of isolation from the host operating system?

  A. Type Il hypervisor

  B. Resource pooling

  C. Hardware-assisted virtualization

  D. Single-node clustering

  Correct Answer: C

  Hardware-assisted virtualization, often implemented through technologies like Intel VT-x or AMD-V, allows the hypervisor to directly manage hardware resources, enhancing the isolation between virtual machines (VMs) and the host operating system. With hardware-assisted virtualization, VMs have more direct access to physical hardware resources, reducing the potential for interference or compromise from the host operating system.

• Question 526:

  Which of the following protocols is the most appropriate to use for inventory tracking in a small warehouse?

  A. Near-field communication

  B. Radio-frequency identification

  C. Bluetooth

  D. 802.11

  Correct Answer: B

  Radio-frequency identification (RFID) is the most appropriate protocol to use for inventory tracking in a small warehouse. RFID is a technology that uses radio waves to identify and track objects that have RFID tags attached to them. RFID

  tags are small devices that store information about the object, such as its name, serial number, location, or status. RFID tags can be passive, which means they do not have a battery and rely on the radio signal from the reader to power them,

  or active, which means they have a battery and can transmit their own signal. RFID readers are devices that can scan the RFID tags and read the information stored on them.

  RFID is suitable for inventory tracking in a small warehouse because it can provide several benefits, such as:

  Faster and more accurate scanning: RFID tags can be scanned without direct line of sight, unlike barcodes, and can be scanned in bulk, unlike QR codes. This means that RFID readers can scan multiple items at once, even if they are inside

  boxes or containers, and reduce the time and errors involved in manual scanning. Real-time visibility and control: RFID tags can be updated with the latest information about the inventory, such as its location, quantity, or condition. This means

  that RFID readers can provide real-time data and feedback on the inventory status, such as its availability, movement, or expiration. This can help improve inventory management, optimize warehouse space, and prevent stockouts or

  overstocking.

  Enhanced security and quality: RFID tags can be encrypted and authenticated, unlike barcodes or QR codes, which can be easily copied or tampered with. This means that RFID tags can prevent unauthorized access or theft of the inventory,

  and ensure its authenticity and quality. This can help protect the inventory from damage, loss, or fraud, and increase customer satisfaction and trust.

  References:

  Inventory Tracking Simplified: Steps, Methods and Efficiency Tips1 17 Essential Inventory Management Techniques Forbes Advisor2 Inventory Tracking vs Inventory Traceability - Kardex3

• Question 527:

  A user reports the following:

  When accessing large images, PC performance is degraded. When accessing small text files, PC performance is as expected.

  Which of the following is the most likely cause of the performance issues?

  A. HDD fragmentation

  B. RAID controller failure

  C. RAID array configuration errors

  D. Insufficient power supply

  Correct Answer: A

• Question 528:

  Which of the following wireless standards can operate in the 6GHz frequency range?

  A. 802.11ac

  B. 802.11ax

  C. 802.11g

  D. 802.11n

  Correct Answer: B

  Explanation: The correct answer is B. 802.11ax.

  802.11ax, also known as Wi-Fi 6 or Wi-Fi 6E, is the latest wireless standard that can operate in the 6GHz frequency range. This standard was approved by the IEEE in February 2021 and offers higher throughput, lower latency, and improved efficiency compared to previous standards1 The 6GHz frequency range spans from 5.925 GHz to 7.125 GHz and provides 1200 MHz of additional spectrum for Wi-Fi devices. This means that Wi-Fi 6E can support more channels, wider bandwidths, and less interference than the existing 2.4 GHz and 5 GHz bands. Wi-Fi 6E can access up to 59 20-MHz channels, 29 40-MHz channels, 14 80-MHz channels, or 7 160-MHz channels in the 6GHz band1 802.11ac, also known as Wi-Fi 5, is the previous wireless standard that can only operate in the 5GHz frequency range. It was approved by the IEEE in December 2013 and offers faster speeds and better performance than older standards. However, it cannot use the new spectrum in the 6GHz band and has limited channel availability and capacity in the crowded 5GHz band2 802.11g and 802.11n are older wireless standards that can only operate in the 2.4GHz frequency range. They were approved by the IEEE in June 2003 and October 2009, respectively, and offer lower speeds and performance than newer standards. They also suffer from more interference and congestion in the saturated 2.4GHz band, which is shared by many other devices and technologies32

• Question 529:

  A user calls the help desk about a 4K monitor that will not output an image from a desktop. The monitor was working previously but now shows a black screen with a message stating a signal is not detected. The desktop is connected via HDMI, and the monitor has an empty DVI port. Which of the following steps should the technician perform first? (Select two).

  A. Check the version of the HDMI cable.

  B. Check the input source.

  C. Set up the desktop for DVI.

  D. Replace the HDMI cable.

  E. Install OS updates.

  F. Initiate a system restore.

  Correct Answer: AB

  Explanation: The first steps that the technician should perform are A. Check the version of the HDMI cable and B. Check the input source.

  A possible cause of the problem is that the HDMI cable is not compatible with the 4K resolution of the monitor. HDMI cables have different versions that support different features and bandwidths. For example, HDMI 1.4 supports up to 4K at 30 Hz, while HDMI 2.0 supports up to 4K at 60 Hz1. The technician should check the version of the HDMI cable and make sure it matches the specifications of the monitor and the desktop. Another possible cause of the problem is that the monitor is not set to the correct input source. The input source is the option that allows the monitor to switch between different video signals from different ports, such as HDMI, DVI, VGA, or DisplayPort2. The technician should check the input source and make sure it is set to HDMI, since that is how the desktop is connected to the monitor. The input source can usually be changed using the buttons or menu on the monitor itself2.

• Question 530:

  A technician is troubleshooting a PC that has been experiencing random system crashes. The technician has already checked the hard drive and the RAM, and both were in good working order. Which of the following steps should the technician take next to troubleshoot the system crashes?

  A. Test the fan speed.

  B. Disable the USB ports

  C. Replace the PSU

  D. Decrease the RAM timings.

  Correct Answer: C

  A PSU (power supply unit) is a component that converts the AC power from the wall outlet into DC power that the PC components can use. A faulty or failing PSU can cause random system crashes, as well as other problems such as noise, overheating, or no power at all. A PSU can fail due to various reasons, such as age, dust, power surges, or poor quality. To troubleshoot a PSU, the technician can use a multimeter to measure the voltage output of the PSU connectors. The voltage should be within the acceptable range of the specifications. For example, the 12V rail should be between 11.4V and 12.6V. If the voltage is too low or too high, the PSU is likely defective and needs to be replaced. Alternatively, the technician can try swapping the PSU with a known good one and see if the system crashes persist. If the system works fine with a different PSU, then the original PSU is the problem and should be replaced. The other options are not likely to fix the random system crashes. Testing the fan speed may help to diagnose overheating issues, but it is not related to the PSU. Disabling the USB ports may help to eliminate potential conflicts with USB devices, but it is not related to the PSU. Decreasing the RAM timings may help to improve performance and stability, but it is not related to the PSU. References: Fix Random PC Crashes: 10 Steps to Identify and Fix Issues Why Does Windows Crash? The 9 Most Common Reasons