220-1101 Online Practice Questions and Answers

Correct Answer: A

One possible solution to address the issue of a webcam not working with a videoconferencing program is to close other video software and retry (option A). It's possible that another video software program is currently using the webcam and preventing the videoconferencing program from accessing it. By closing any other video software that may be running on the computer, the user can ensure that the webcam is available for use by the videoconferencing program.

Correct Answer: A

Cat 5 cable is limited to a maximum data transfer rate of 100Mbps, while Cat 5e, Cat 6, and Cat 6a cables support Gigabit Ethernet (1000Mbps) and higher speeds. Even though the LAN card is capable of Gigabit speeds, it cannot achieve that speed when using a Cat 5 cable. Upgrading to a Cat 5e or higher cable would allow the computer to achieve Gigabit speeds. References: CompTIA A+ Certification Exam: Core 1 - Page 196

Correct Answer: A

Correct Answer: AB

Correct Answer: A

Correct Answer: A

NFC (Near Field Communication) is the technology used for contactless payment features on mobile payment devices. If a mobile payment device is having issues with its contactless payment feature and is not detecting payment options, it is most likely due to an issue with the NFC functionality of the device. The contactless payment feature on a mobile payment device uses NFC (Near Field Communication) to detect payment options. If the device is not detecting payment options, the issue may be related to a problem with the NFC feature. References: https://www.techopedia.com/definition/31790/near-field-communication-nfc

Correct Answer: BC

Explanation: The technician is unable to access the company portal website, but other websites work fine. This suggests an issue with resolving the specific URL of the company portal, which is a function of DNS.

Here's why other options are not the most likely cause:

DHCP reservations: This is not relevant as the issue persists even when the technician tries a different workstation, indicating a problem beyond individual device configuration. Static IP addresses: Similar to DHCP reservations, static IPs are

not likely the cause as both affected workstations are experiencing the issue. Default gateway: While the default gateway is necessary for internet access, other websites are working, making it less likely to be the root cause.

References:

CompTIA A+ Certification Core 1 220-1101 Study Guide, Chapter 4: Networking, Section 4.2 Addressing and Naming

Correct Answer: D

Explanation: The answer is D. Perform a full backup.

Before replacing a failed drive in a RAID 5 array, the technician should perform a full backup of the data on the array to ensure that no data is lost during the hot swapping process. Hot swapping is the process of replacing a drive without shutting down the system or the array, which allows for faster recovery and minimal downtime. However, hot swapping also involves some risks, such as accidentally removing the wrong drive, damaging the new drive, or encountering another drive failure during the rebuild process. Therefore, performing a full backup is a precautionary measure that can prevent data loss in case of any unexpected errors or complications. The other options are not the first steps that the technician should take before hot swapping the drive. Documenting the replacement date is a good practice, but it is not as important as backing up the data. Shutting down the array is not necessary for hot swapping, and it may cause more disruption to the system or the users. Safely disposing of the failed drive is a step that should be done after replacing it, not before. References: Hot-swapping the hard drives when the RAID crashes | QNAP, section "Install a new drive to rebuild RAID 5 by hot swapping": "Important: Do not install a new drive when the system is not in degraded mode, otherwise you may encounter unexpected system failures." Hot Swapping hard drives on Raid 5 with data on them - Spiceworks Community, reply by Magnus369: "Part of that slowness would be the raid level you are using. Highly doubt you can change it without losing data either, but your writes are going to be atrociously slow due to having to figure out parity across 11 drives for each write you do. While you may have a ton of space, it's unstable and subject to self destruction." hard drive - How do I Change a damaged Disk in a Raid 5 array - Server Fault, answer by Chris S: "If you have another disk failure during rebuild you will lose all your data."

Correct Answer: C

Explanation: The correct answer is C. Check the RAID drive status LEDs.

RAID stands for Redundant Array of Independent Disks, which is a technology that combines multiple physical disks into a logical unit that provides improved performance, reliability, or both1. RAID can be implemented using hardware or software, and there are different levels of RAID that use different methods of data distribution and redundancy1. One of the common issues with RAID is disk failure, which means that one or more of the disks in the array stop working properly. Disk failure can affect the performance and availability of the network fileshares, depending on the RAID level and the number of failed disks2. For example, RAID 0, which uses striping to split data across multiple disks, has no redundancy and will lose all data if any disk fails. RAID 1, which uses mirroring to duplicate data on two disks, can tolerate one disk failure and still function. RAID 5, which uses striping with parity to distribute data and error correction information across three or more disks, can also tolerate one disk failure and still function1. One of the ways to detect disk failure is to check the RAID drive status LEDs, which are lights that indicate the health and activity of each disk in the array. Different RAID controllers may have different LED patterns and colors, but generally, a green LED means that the disk is working normally, a red LED means that the disk has failed or is offline, an amber LED means that the disk is degraded or rebuilding, and a blinking LED means that the disk is active or busy34. The first step that a technician should perform when troubleshooting network fileshare issues is to check the RAID drive status LEDs to see if any disk has failed or is degraded. This can help identify the cause of the problem and determine the appropriate solution. For example, if a disk has failed in a RAID 1 or RAID 5 array, the technician can replace the failed disk and rebuild the array to restore performance and redundancy. If a disk has failed in a RAID 0 array, the technician will need to restore the data from a backup2. The other options are not the best steps to perform first. Defragmenting the files on the network share may improve performance by reducing fragmentation, but it will not solve the problem if there is a disk failure in the RAID array. Asking the users to perform a network speed test may help diagnose network issues, but it will not help identify disk issues in the RAID array. Starting the process of rebuilding the array may be necessary after replacing a failed disk, but it should not be done before checking the RAID drive status LEDs.

Correct Answer: C

Rapid elasticity is the ability of a cloud service to scale up or down the resources (such as virtual servers, storage, bandwidth, etc.) according to the demand of the users. This is an efficient way to handle unusually high web traffic usage, as it allows the company to provision more virtual servers when needed and release them when not needed, without wasting resources or paying for unused capacity. Rapid elasticity also improves the performance and availability of the web service, as it can adjust to the fluctuations in traffic and avoid overloading or downtime. References Rapid Elasticity in Cloud Computing: On-Demand Scaling for Business Chapter 4: Virtualization and Cloud Computing