220-1101 Exam Dumps - CompTIA A+ Questions and Answers

The next troubleshooting step that the technician should attempt is to restart the smartphone. Restarting the smartphone can help resolve many common issues, such as battery drain, network utilization, app crashes, or performance slowdowns. Restarting the smartphone can do the following:

Clear the memory and cache of the smartphone, which can free up space and speed up the device.

Close any background apps or processes that may be consuming battery or network resources, such as syncing, updating, or streaming.

Reset the network settings and connections of the smartphone, which can improve the signal strength and quality.

Refresh the operating system and the user interface of the smartphone, which can fix any glitches or errors.

To restart the smartphone, the user can follow these steps:

Press and hold the power button of the smartphone until a menu appears on the screen.

Tap the option that says Restart, Reboot, or Power off and on.

Wait for the smartphone to turn off and then turn on again.

Enter the PIN, password, or pattern to unlock the smartphone.

Check the battery level and the network utilization of the smartphone.

If restarting the smartphone does not solve the problem, the technician may need to try other troubleshooting steps, such as updating the mobile OS, disabling Bluetooth, or connecting the smartphone to a Wi-Fi network. However, restarting the smartphone is usually the first and simplest step to try.

References:

How to stop "Mobile network standby" from draining my battery1

Battery life: Guide to everything that affects and drains your phone battery2

Mobile Network Standby Battery Drain; How To Fix It?3

Get the most life from your Android device’s battery4

How to Fix Battery Drain from Mobile Network on Galaxy S235

Calibration is the process of adjusting the printer settings to ensure that the printed output matches the original document. Calibration can fix issues such as misaligned images, color accuracy, and print quality. References: [Printer Calibration]

To route traffic to the next network. An IPv4 gateway is a device that connects two or more networks and forwards packets based on their destination IP addresses. It acts as an intermediary between a host and the rest of the internet, allowing communication across different networks. A gateway does not distribute IP addresses, generate ARP traffic, or assign APIPA addresses, as these are functions of other network components.

This is because a docking station can connect multiple monitors to a laptop without using USB ports, which are disabled in this scenario. A splitter cable would only allow two monitors to be connected, not three. A discrete graphics card would require opening the laptop and installing hardware, which may not be feasible or allowed in a high-security environment. An HDMI switch would only allow one monitor to be active at a time, not all three simultaneously.

A storage area network (SAN) is the type of network that the technician will be working with when adding more space to resolve the issue of all VMs being down due to the network being out of space. A SAN is a network that provides access to consolidated and block-level data storage, which can be used for virtualization and backup purposes. SCSI is a type of interface that connects devices such as hard drives and optical drives to a computer. NAC is a type of security solution that controls access to a network based on policies and device compliance. WISP is a type of internet service provider that delivers wireless broadband access over long distances. 

SAS stands for Serial Attached SCSI, which is a type of interface that connects storage devices to servers or workstations. SAS supports both mechanical hard disk drives (HDDs) and solid state drives (SSDs), but not other types of storage devices, such as NVMe M.2, mSATA, or optical drives12.

RAID stands for Redundant Array of Independent Disks, which is a method of combining multiple storage devices into a logical unit that provides improved performance, reliability, or both. RAID 10 is a combination of RAID 1 (mirroring) and RAID 0 (striping), which means that data is written across two or more striped sets of mirrored drives34.

Therefore, the only type of storage device that the technician can install in a server that only has SAS connectors and wants to use RAID 10 is mechanical HDDs. Mechanical HDDs use spinning platters and moving heads to store and access data, and they are usually cheaper and have larger capacities than SSDs, but they are also slower and more prone to failure .

References:

CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.3: Storage Devices, Page 131

CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 3: Storage, Section 3.2: Storage Interfaces, Page 97

CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.4: RAID, Page 143

CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 3: Storage, Section 3.4: RAID, Page 104

CompTIA A+ Core 1 (220-1101) Certification Study Guide, Chapter 3: Hardware, Section 3.3: Storage Devices, Page 129

CompTIA A+ Core 1 (220-1101) and Core 2 (220-1102) Exam Cram, Chapter 3: Storage, Section 3.3: Hard Disk Drives, Page 99

The scenarios that best illustrate a need for VDI are A and D.

VDI can provide several benefits for different use cases, such as:

Enhancing security and compliance by centralizing and encrypting data and applications on the server, rather than on the endpoint devices. This can prevent data loss, theft, or leakage, as well as reduce the risk of malware or unauthorized access. This is especially important for organizations that deal with sensitive or regulated information, such as banks, healthcare providers, or government agencies123.

Improving flexibility and mobility by allowing users to access their desktops and applications from any device, location, or network. This can enable remote work, bring your own device (BYOD) policies, or disaster recovery scenarios. This is especially useful for organizations that have distributed or mobile workforce, such as IT engineers, consultants, or sales representatives123.

Reducing costs and complexity by simplifying the management and maintenance of desktops and applications. This can lower the hardware, software, and energy expenses, as well as the IT staff workload. This is especially beneficial for organizations that have large or diverse desktop environments, such as schools, call centers, or manufacturing plants123.

Based on these benefits, the scenarios that best illustrate a need for VDI are:

A. An IT engineer who is designing and showcasing organization user experiences for multiple clients. This scenario requires flexibility and mobility, as the IT engineer needs to access different desktop environments and applications from various devices and locations. VDI can enable the IT engineer to create and switch between multiple virtual desktops on the same server, and to access them from any client device with an internet connection1.

D. A bank that has security concerns regarding employee activity. This scenario requires security and compliance, as the bank needs to protect its data and applications from internal and external threats. VDI can enhance the security of the bank’s desktop environment by storing and encrypting all data and applications on the server, rather than on the endpoint devices. VDI can also provide granular control and monitoring of user access and activity2.

The scenarios that do not illustrate a need for VDI are:

B. A company that needs to store IOPB worth of data. This scenario does not require VDI, as VDI is not a storage solution but a desktop virtualization solution. VDI can help reduce the storage requirements of endpoint devices by storing data on the server, but it does not provide storage capacity or performance for large-scale data processing or analysis. The company may need a different type of cloud service, such as storage as a service (SaaS) or big data as a service (BDaaS), to store and manage its massive amount of data4.

C. A manufacturing plant that has high turnover. This scenario does not require VDI, as VDI is not a human resource solution but a desktop virtualization solution. VDI can help reduce the costs and complexity of managing desktops and applications for a large number of users, but it does not address the root causes of high turnover, such as low wages, poor working conditions, or lack of training. The manufacturing plant may need to improve its human resource policies and practices to retain its employees.

E. A payment processor that is planning on implementing virtual currency. This scenario does not require VDI, as VDI is not a payment solution but a desktop virtualization solution. VDI can help improve the security and flexibility of accessing desktops and applications over the internet, but it does not provide the functionality or compatibility for processing virtual currency transactions. The payment processor may need a different type of cloud service, such as blockchain as a service (BaaS) or cryptocurrency as a service (CaaS), to implement and manage its virtual currency platform.

F. An application developer who needs to configure network settings for an application. This scenario does not require VDI, as VDI is not a development solution but a desktop virtualization solution. VDI can help provide different desktop environments and applications for testing purposes, but it does not provide the tools or resources for developing or configuring applications. The application developer may need a different type of cloud service, such as platform as a service (PaaS) or software development as a service (SDaaS), to create and deploy applications.

The most important factor to consider when upgrading a laptop’s RAM is the architecture of the RAM, which determines the type, speed, and capacity of the memory modules. The architecture of the RAM must match the architecture of the laptop’s motherboard and processor, otherwise the RAM will not be compatible or function properly. The architecture of the RAM includes the DDR generation (such as DDR3 or DDR4), the form factor (such as SO-DIMM), the pin count (such as 204 or 260), the voltage (such as 1.35V or 1.5V), and the frequency (such as 1600MHz or 2400MHz).

The other options are not as crucial or relevant for the RAM upgrade. The brand of the RAM does not matter as long as the RAM meets the specifications of the laptop and is of good quality. The CAS latency of the RAM is a measure of the delay between the memory controller requesting data and the RAM delivering it, and it affects the performance of the RAM. However, the CAS latency is not a fixed value and can vary depending on the frequency and voltage of the RAM. Therefore, purchasing RAM with the same CAS latency is not necessary or sufficient for compatibility. The laptop’s BIOS settings are usually configured to automatically detect and adjust to the RAM upgrade, and do not need to be manually changed by the technician.

References:

CompTIA A+ Certification Exam Core 1 Objectives1

The Official CompTIA A+ Core 1 Student Guide (Exam 220-1101) eBook2

How to Upgrade the RAM in Your Laptop | Tom’s Hardware3

How to Upgrade RAM on a Laptop | Crucial.com4

A USB-C cable is the best option for installing an RS-232 serial signature pad to an ultralightweight laptop. USB-C is a universal connector that supports various protocols and devices, including serial devices. A port replicator is a device that expands the connectivity options of a laptop by providing additional ports. Wi-Fi Direct is a wireless technology that allows devices to connect directly without a router or access point. Hotspot is a feature that allows a device to share its internet connection with other devices via Wi-Fi, Bluetooth, or USB. 

A power supply unit (PSU) is a component that converts AC power from the wall outlet to DC power that can be used by the computer components. A PSU has various specifications, such as input voltage, output voltage, wattage, connector type, form factor, and efficiency rating3. In this scenario, the engineer is building a workstation that requires the following components: an ATX motherboard, a multi-core processor, a dedicated graphics solution, a SATA hard drive, and DDR4 memory. The most suitable power supply specification for this workstation is 12V, 500W output. This means that the PSU can provide 12 volts of DC power and 500 watts of total power to the components. 12V is the standard output voltage for most modern PSUs, and it is compatible with the ATX motherboard and the SATA hard drive4. 500W is a sufficient wattage for a workstation that has a multi-core processor and a dedicated graphics solution, which are power-hungry components5. The other power supply specifications are not suitable for this workstation because:

•SFX, 18-pin connector is a form factor and a connector type that are not compatible with the ATX motherboard, which requires an ATX form factor and a 24-pin connector6.

•DC input is a type of input voltage that is not common for desktop PSUs, which usually use AC input from the wall outlet.

•Type A socket is a type of AC power plug that is used in North America and Japan, but it is not a power supply specification.

References

3: What Power Supply Do I Have: Quick Ways to Find Your PSU Specs

4: Power Supply 101: A Reference Of Specifications

5: How to Choose the Right Power Supply for Your PC

6: SFX vs ATX PSU: What’s the Difference?

AC vs DC Power Supply: What’s the Difference?

AC power plugs and sockets - Wikipedia

One of the possible causes of random and incorrect characters appearing on print jobs sent to a laser printer is an outdated or corrupted driver. The driver is a software component that communicates between the operating system and the printer, and converts data into a format that the printer can understand. If the driver is outdated or corrupted, it may send incorrect or garbled data to the printer, resulting in poor print quality or errors. The technician should update the driver to the latest version from the manufacturer’s website, or uninstall and reinstall it if necessary. Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 47)

A patch panel is a mounted hardware unit containing ports used to manage cable connections. The individual pairs of a Cat 6 cable are terminated on the patch panel, which then provides a central location for cable management and organization. The patch panel is then connected to the switch using a patch cable.

RAID stands for Redundant Array of Independent Disks, which is a technology that combines multiple disks into a logical unit to improve performance, reliability, or both. There are different types of RAID levels that use different methods of data distribution and redundancy.

RAID 0 is a level that stripes data across multiple disks without any redundancy. It offers the highest performance but no fault tolerance. If any disk fails, the entire array is lost.

RAID 1 is a level that mirrors data across two disks. It offers the lowest performance but the highest fault tolerance. It can survive the failure of one disk.

RAID 5 is a level that stripes data across multiple disks with parity information. It offers a balance between performance and fault tolerance. It can survive the failure of one disk, but not two or more disks.

RAID 10 is a level that combines RAID 1 and RAID 0. It creates a striped array of mirrored pairs. It offers high performance and high fault tolerance. It can survive the failure of one disk in each pair, or multiple disks in different pairs.

Therefore, if the server administrator wants to rebuild the array to withstand a potential multidrive failure in the future, RAID 10 is the most likely choice.

When installing a wireless point-to-point connection between two buildings, the technician should consider the allowable limits for transmit power, which vary depending on the country or region. Exceeding these limits could interfere with other wireless devices or violate regulations. NFC protocol data rate, RFID frequency range, and Bluetooth version compatibility are not relevant for a wireless point-to-point connection.