- (Topic 4)
A user called the help desk to request assistance with selecting appropriate storage to back up a large collection of DVDs and photos in the most
economical way. Which of the following should the help desk recommend?
Correct Answer:
D
Optical media, such as CDs, DVDs, or Blu-ray discs, are a suitable choice for backing up a large collection of DVDs and photos in the most economical way. Optical media are inexpensive, widely available, and have a long shelf life. They can store large amounts of data, up to 50GB on a dual-layer Blu-ray disc, and can be easily labeled and organized. Optical media are also less prone to mechanical failure, data corruption, or accidental deletion than hard disk drives (HDDs) or solid state drives (SSDs).
The other options are not as economical or suitable for this purpose. A 5,400rpm HDD is a slow and noisy type of HDD that has moving parts that can wear out or break. A HDD also consumes more power and generates more heat than an SSD. A M.2 NVMe SSD is a fast and compact type of SSD that uses a PCIe interface to transfer data. However, an SSD is more expensive than an HDD or optical media, and has a limited number of write cycles before it degrades. A SAS RAID array is a complex and costly system that uses multiple HDDs or SSDs connected by a Serial Attached SCSI (SAS) interface to provide redundancy, performance, or both. A RAID array requires a RAID controller, a compatible motherboard, and a dedicated power supply.
References:
✑ CompTIA A+ Certification Exam Core 1 Objectives1
✑ The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook2
✑ Best ways to backup photos of 2023 | TechRadar3
✑ Best external hard drives in 2023: clever drives for added storage and …4
✑ DVD Storage Ideas | Remodelaholic5
- (Topic 4)
A user reports intermittent connectivity. The technician checks the network logs and sees the following output:
Interface 0/1 Status Up Interface 0/1 Status Down
Interface 0/1 Status Up 13:03:20
Interface 0/1 Status Down 13:04:10 Switch elected as Root bridge
Interface 0/1 Status Up 13:05:40
Which of the following is the most likely reason for this issue?
Correct Answer:
D
Port flapping, also known as link flapping, is a situation in which a physical interface on the switch continually goes up and down, causing intermittent connectivity for the devices connected to that port12. Port flapping can be caused by various factors, such as faulty or incompatible cables, hardware issues, configuration errors, or other network problems123. The network logs show that interface 0/1 on the switch changes its status from up to down and vice versa several times within a short period of time. This indicates that the port is flapping and affecting the network connectivity. The log also shows that the switch was elected as the root bridge, which means that it is the central point of a spanning tree protocol (STP) network. STP is a protocol that prevents loops in a network by blocking some ports and creating a tree-like topology. Port flapping can cause STP to recalculate the topology and change the status of the ports, which can further disrupt the network performance2.
To troubleshoot port flapping, the technician should check the physical and hardware aspects of the device, such as cables, SFPs, gigabit interface converters, and power supplies. The technician should also check the configuration settings of the port, such as auto-negotiation, duplex mode, speed, power-saving features, and smartport. The technician should also check for other network issues that may cause port flapping, such as link synchronization and spanning tree issues123.
- (Topic 4)
A technician tries installing different toners to fix a printer that is printing blank pages, but the issue persists. Which of the following is most likely causing the issue?
Correct Answer:
A
A printer drum is a component of a laser printer that transfers the toner to the paper. It is a cylindrical metal or plastic piece that is coated with a photosensitive material. The drum is charged by a laser beam, which creates an electrostatic image of the document to be printed. The toner then sticks to the charged areas of the drum, and the drum rolls over the paper, transferring the toner to the paper and creating the printout1.
If the printer drum is damaged, worn out, or dirty, it may not be able to transfer the toner properly, resulting in blank pages. According to some web search results23, some signs that a printer drum needs to be replaced are:
•Faint, light, faded, or blank printed pages
•Streaks, spots, or lines on the printed pages
•Error messages indicating a drum problem
To fix this issue, the technician may need to clean or replace the printer drum. Some web search results12 provide instructions on how to perform a manual drum cleaning or replacement.
Printer ink is not a likely cause of the issue, since the user has already tried installing different toners and the issue persists. Toner is the powder used by laser printers, while ink is the liquid used by inkjet printers. They are not interchangeable4.
Environmental temperature is not a likely cause of the issue, since most printers can operate in a wide range of temperatures. However, extreme temperatures may affect the quality and performance of some printers. For example, high temperatures may cause ink to dry out or toner to clump, while low temperatures may cause ink to freeze or toner to become brittle.
Corrupted printer drivers are not a likely cause of the issue, since they would affect the communication between the printer and the computer, not the printing process itself. Corrupted printer drivers may cause errors, delays, or incorrect outputs, but not blank pages.
- (Topic 4)
A remote user is unable to access files at home but can open the files at the office. Which of the following should a technician check so the user can access the files both places?
Correct Answer:
D
One possible reason why a remote user is unable to access files at home but can open the files at the office is that the offline file settings are not configured properly. Offline files are a feature of Windows that allows users to access files and folders that are stored on a network drive even when they are not connected to the network. Offline files are cached copies of the network files that are stored on the local computer and synchronized with the network files when the connection is restored.
To use offline files, the user needs to enable the feature on their computer and on the network drive that contains the files they want to access. The user also needs to make sure that the files and folders they want to access are available offline, which means they are marked for offline synchronization. The user can check and change these settings by following these steps:
✑ Open Control Panel and select Network and Internet > Sync Center > Manage offline files.
✑ In the Offline Files window, click Enable offline files if the feature is disabled, and then click OK.
✑ Restart the computer to apply the changes.
✑ Open File Explorer and navigate to the network drive that contains the files and folders the user wants to access.
✑ Right-click the files and folders and select Always available offline. A green sync icon will appear next to the items that are available offline.
✑ To manually sync the offline files with the network files, open Sync Center and click Sync All.
By doing this, the user should be able to access the files and folders on the network drive even when they are at home or away from the office. However, the user should also be aware of some limitations and risks of using offline files, such as:
✑ Offline files may not reflect the latest changes made by other users on the
network, and may cause conflicts or errors when syncing.
✑ Offline files may take up a lot of disk space on the local computer, and may affect the performance or stability of the system.
✑ Offline files may be vulnerable to theft, loss, or damage if the local computer is not secured or backed up.
Therefore, the user should always backup their important files and folders, and use encryption or password protection to safeguard their offline files.
References:
✑ Make a network file or folder available offline - Windows Client1
✑ How to use offline files in Windows 10 - The Windows Club2
✑ Offline Files - Enable or Disable the Use Of - Windows 7 Help Forums3
- (Topic 4)
Which of the following protocols provides the fastest bandwidth?
Correct Answer:
C
The 802.11ax protocol, also known as Wi-Fi 6, provides the fastest bandwidth among the options listed. It can achieve up to 10 Gbps of data transfer rate, using technologies such as OFDMA, MU-MIMO, and 1024-QAM. The 802.11ac protocol, or Wi-Fi 5, is the second fastest, with a maximum of 3.46 Gbps, followed by the 802.11n protocol, or Wi-Fi 4, with a maximum of 600 Mbps. The 802.11a protocol is the slowest, with a maximum of 54 Mbps
https://www.lifewire.com/wireless-standards-802-11a-802-11b-g-n-and-802-11ac-816553