CompTIA CompTIA Certifications 220-1101 Questions & Answers

• Question 561:

  A systems administrator hears a clicking noise coming from a storage array that has a RAID configuration_ No LEOS are illuminated on the array but the logs show several hard drive errors. Which of the following should the systems administrator do to quickly eliminate the clicking?

  A. Reinstall the drive.

  B. Replace the bad drive.

  C. Reset the RAID software

  D. Run a chkdek on the drive.

  Correct Answer: B

  Explanation: The correct answer is B. Replace the bad drive.

  A clicking noise coming from a hard drive is a sign of a mechanical failure, which can cause data loss or corruption. Replacing the bad drive as soon as possible is the best way to prevent further damage and restore the RAID array to a

  healthy state. Reinstalling the drive, resetting the RAID software, or running a chkdek on the drive will not fix the underlying hardware problem and may even worsen the situation. Therefore, option B is the correct answer.

  References:

  CompTIA A+ Core 1 (220-1101) Certification Study Guide, page 131: "Clicking noises indicate that the hard drive is failing mechanically." RAID configuration on Linux - Amazon Elastic Compute Cloud, section "Replace a failed volume in a

  RAID 0 array": "If one of the volumes in your RAID 0 array fails, you must replace it as soon as possible to avoid data loss."

• Question 562:

  A laser printer is making humming and grinding noises, and the printouts have ghost images on the pages. Which of the following should be replaced?

  A. Cartridge

  B. Paper

  C. Fuser

  D. Rollers

  Correct Answer: C

  Explanation: The most likely answer is C. Fuser.

  A fuser is a component in a laser printer that uses heat and pressure to fuse the toner powder onto the paper. If the fuser is damaged or worn out, it can cause humming and grinding noises, as well as ghost images on the printouts. Ghost

  images are faint copies of previous images that appear on the same page. They are caused by the fuser not heating the toner properly, or by the toner sticking to the fuser roller and transferring to the next page12. To fix this problem, you

  should replace the fuser unit with a new one. You can check your printer manual for instructions on how to remove and install the fuser unit. You can also use a diagnostic ruler to measure the distance between the ghost images and

  determine if the fuser is the source of the problem2. If the ghost images are far apart (between 4cm and 5cm), then the fuser is likely to be faulty.

  References:

  1: Solved: "Ghost Images" When Printing - HP Support Community

  2: How to Fix Ghosting When Using a Laser Printer and Toner Cartridges ?Inksaver

• Question 563:

  A technician is unable to connect to a network device via SSH_ Which of the following cables should the technician use as an alternative connection method with a laptop?

  A. Serial

  B. HDMI

  C. Parallel

  D. Lightning

  Correct Answer: A

  Explanation: The correct answer is A. Serial. A serial cable is a type of cable that can be used to connect a laptop to a network device via a serial port. A serial port is a physical interface that allows data transmission between devices using serial communication, which is a method of sending data one bit at a time over a single wire. Serial ports are often used for console access to network devices, such as routers, switches, firewalls, or servers, when other methods of connection, such as SSH (Secure Shell), are not available or not working. SSH is a protocol that allows secure and encrypted remote login and command execution over a network. SSH uses public key cryptography to authenticate the client and the server, and to encrypt the data exchanged between them. SSH can be accessed through different ports, depending on the configuration of the server and the client. The default port for SSH is 22, but it can be changed to any other port for security reasons. HDMI (High-Definition Multimedia Interface) is a type of cable that can be used to transmit audio and video signals between devices, such as laptops, monitors, TVs, or projectors. HDMI cables support high-definition video and audio formats, and can also carry Ethernet and power signals. HDMI cables are not suitable for connecting to network devices via SSH, as they are designed for multimedia purposes. Parallel cables are a type of cable that can be used to connect devices that use parallel communication, which is a method of sending data multiple bits at a time over multiple wires. Parallel cables are often used for connecting printers or scanners to computers, but they are not commonly used for network devices or SSH connections. Lightning cables are a type of cable that can be used to connect Apple devices, such as iPhones, iPads, or iPods, to computers or chargers. Lightning cables support data transfer and power delivery, and can also be used with adapters to connect to other types of ports, such as USB or HDMI. Lightning cables are not compatible with network devices or SSH connections, as they are specific to Apple products. Therefore, the only cable that can be used as an alternative connection method with a laptop when SSH is not working is a serial cable. Serial cables can provide console access to network devices and allow configuration and troubleshooting commands to be executed. For more information about SSH and its alternatives, you can refer to the following web search results: Alternatives to SSH, How To Configure Custom Connection Options for your SSH Client, Understanding the SSH Encryption and Connection Process, How to Use Public Key Authentication with SSH.

• Question 564:

  A customer reports a network connectivity issue. A technician discovers that LAN ports have been damaged during remodeling. Which of the following tools should the technician use to fix the issue?

  A. Cable stripper

  B. Punchdown tool

  C. Crimper

  D. Network tap

  Correct Answer: B

  Explanation: The correct answer is B. Punchdown tool. A punchdown tool is a device that can connect wires to a patch panel or a network jack by inserting them into the appropriate slots and cutting off the excess. A punchdown tool can be used to fix the damaged LAN ports by replacing the wires or reconnecting them to the correct terminals. A cable stripper is a device that can remove the insulation from a cable to expose the wires inside. A cable stripper is not useful for fixing the damaged LAN ports, unless the technician needs to strip new wires before punching them down. A crimper is a device that can attach connectors to the ends of cables, such as RJ-45 or RJ-11. A crimper is not useful for fixing the damaged LAN ports, unless the technician needs to replace the connectors on the cables. A network tap is a device that can monitor and capture network traffic by creating a copy of the data passing through a network link. A network tap is not useful for fixing the damaged LAN ports, as it does not affect the connectivity of the network devices. Reference: CompTIA A+ Certification ore 1 Objectives

• Question 565:

  A printer displays an error message even after a paper jam is cleared. Which of the following should a technician do to fix the issue?

  A. Check the paper path for a blocked sensor.

  B. Verify the pickup roller is functioning.

  C. Change the duplex settings.

  D. Run internal printer diagnostics.

  Correct Answer: A

  Explanation: A paper path is the route that paper takes through a printer from the input tray to the output tray. A blocked sensor is a sensor that detects paper jams or other errors in the paper path but fails to clear after the problem is resolved. A blocked sensor can cause a printer to display an error message even after a paper jam is cleared. The technician should check the paper path for any debris or obstructions that may trigger the sensor.

• Question 566:

  Which of the following is a scenario in which an F-type connector would be used?

  A. A technician is making a serial connection to a hardware device.

  B. An internet service provider is installing service for a client.

  C. A user is purchasing a charging cable for a laptop.

  D. An electrician is upgrading the service on an electrical panel.

  Correct Answer: B

  Explanation: An F-type connector is a coaxial RF connector that is commonly used for cable television, satellite television, and cable modems. An internet service provider (ISP) may use an F-type connector to connect the coaxial cable from the wall outlet to the cable modem or the set-top box. The F-type connector has a threaded interface that provides a secure and reliable connection. The F-type connector can also support high-frequency signals up to several GHz, which can deliver high-speed internet and high-definition television. Other scenarios, such as making a serial connection to a hardware device, purchasing a charging cable for a laptop, or upgrading the service on an electrical panel, are not likely to use an F-type connector. A serial connection to a hardware device may use a DB-9 or a DB-25 connector, which are D-shaped connectors with pins. A charging cable for a laptop may use a USB or a barrel connector, which are flat or cylindrical connectors with contacts. An electrical panel may use a twist-lock or a pin-and-sleeve connector, which are round connectors with locking mechanisms. References: F connector - Wikipedia1 F-Type Connectors - RF Connectors | Amphenol RF2 How to Install F Connectors on Coaxial Cable - The Spruce3

• Question 567:

  An engineer is installing a 500W power supply in a server that requires continuous availability. Which of the following is the most suitable type of power supply for the application?

  A. Redundant

  B. Modular

  C. Switched-mode

  D. Semi-modular

  Correct Answer: A

  Explanation: A redundant power supply is a type of power supply that consists of two or more independent units that can provide power to the same device or system. A redundant power supply can increase the reliability and availability of the device or system, because if one unit fails, the other unit can take over and continue to provide power without interruption. A redundant power supply is often used in servers that require continuous availability, such as web servers, database servers, or file servers.

• Question 568:

  A technician is working to replace a single DDR3 RAM module on a laptop that has two occupied slots_ When the technician tries to tum on the laptop, the computer starts beeping and does not pass POST The technician double-checks the newly installed RAM and notices a motherboard message indicating low voltage. Which of the following is the most likely cause of this Issue?

  A. Faulty power adapter

  B. Incorrect BIOS settings

  C. Failing CMOS battery'

  D. Unsupported memory

  Correct Answer: D

  Explanation: Memory modules are physical components that store data and instructions for the computer to access and process. Memory modules have different specifications and features, such as type, speed, capacity, voltage, and form factor. These specifications and features must be compatible with the motherboard and the processor of the computer, otherwise the memory modules may not work properly or cause errors. In this scenario, the technician is working to replace a single DDR3 RAM module on a laptop that has two occupied slots. DDR3 stands for Double Data Rate 3, and it is a type of memory technology that offers faster performance and lower power consumption than its predecessors. DDR3 RAM modules have different variants, such as DDR3L, DDR3U, or DDR3R, which have different voltage requirements. For example, DDR3L operates at 1.35V, DDR3U operates at 1.25V, and DDR3R operates at 1.5V. When the technician tries to turn on the laptop, the computer starts beeping and does not pass POST. POST stands for Power-On Self-Test, and it is a process that checks the hardware components and functionality of the computer before loading the operating system. If POST detects an error or a failure, it may produce a series of beeps or codes to indicate the problem. The number and pattern of beeps or codes may vary depending on the manufacturer or model of the computer. The technician double-checks the newly installed RAM and notices a motherboard message indicating low voltage. This means that the motherboard is not receiving enough power from the memory module to operate normally. This could indicate that the memory module is not compatible with the motherboard or the processor, or that it is defective or damaged. The most likely cause of this issue is that the technician installed an unsupported memory module that has a lower voltage than what the motherboard or the processor requires. To resolve this issue, the technician should remove the newly installed RAM module and replace it with a compatible one that has the same voltage as the existing ones. The technician should also check the specifications and features of the motherboard and the processor to ensure that they support the type, speed, capacity, and form factor of the memory modules. The technician should also follow proper safety precautions when handling memory modules, such as wearing an anti-static wrist strap, avoiding physical damage or static discharge, and aligning the notches correctly.

• Question 569:

  Which of the following is a characteristic of cloud computing that prioritizes reliability?

  A. Shared resources

  B. High availability

  C. Rapid elasticity

  D. Hybrid

  Correct Answer: B

  Explanation: High availability is a characteristic of cloud computing that prioritizes reliability. High availability means that cloud services can be accessed without interruption or failure, even in the event of a disaster or a hardware malfunction. This is achieved by using redundant components, backup systems, load balancing, and failover mechanisms. According to the CompTIA Core1 objectives, one of the benefits of cloud computing is high availability. A research paper on cloud reliability also defines high availability as the ability to provide continuous service despite faults or failures.

• Question 570:

  A laptop's external webcam software is running, but neither images nor videos can be viewed. Which of the following should a technician do first?

  A. Reseat the webcam.

  B. Restart the computer and run system diagnostics.

  C. Reinstall the webcam software and drivers.

  D. Research new webcam firmware.

  Correct Answer: A

  Explanation: The first step that a technician should do is A. Reseat the webcam. Reseating the webcam means unplugging and plugging back the webcam into the laptop's USB port. This can help to ensure that the webcam is properly connected and recognized by the laptop. Reseating the webcam is a simple and quick troubleshooting technique that can solve many common issues, such as loose or faulty connections, power or bandwidth problems, or driver or software conflicts. Reseating the webcam is the first step that a technician should do, because it follows the principle of starting with the easiest and most obvious solution before moving on to more complex and time-consuming ones. Reseating the webcam can also help to isolate the problem and eliminate other possible causes. The other options are not the first steps that a technician should do, because they are more disruptive or less effective. Restarting the computer and running system diagnostics (option B) may be helpful if the problem is caused by a software or hardware error, but it may also cause data loss or interruption of other tasks. Reinstalling the webcam software and drivers (option C) may be necessary if the problem is caused by a corrupted or outdated software or driver, but it may also introduce compatibility or configuration issues. Researching new webcam firmware (option D) may be useful if the problem is caused by a firmware bug or vulnerability, but it may also pose security or stability risks. For more information about troubleshooting external webcams, you can refer to the following web search results: [How to Fix Webcam Problems on Your Laptop], [How to Troubleshoot Webcam Issues on Windows 10], [How to Fix Common Webcam Problems].