CompTIA A+ Practice Test (220-1101)

A WiFi Analyzer is a mobile device (or software on a mobile device) that scans and tracks WiFi signals. It can help you find areas where a signal is low, and which wireless channels are being used the most. With this information you can reconfigure or reposition your WiFi Access Point for the best speeds and reliability.

Software as a Service (SaaS) allows users to connect to and use cloud-based apps over the Internet. Common examples are email, calendaring, and office tools like Microsoft Office 365. SaaS provides a complete software solution that you purchase on a pay-as-you-go basis from a cloud service provider. You rent the use of an app for your organization, and your users connect to it over the Internet, usually with a web browser.

Cat 6 uses twisted-pair copper cabling. Fiber optic uses plastic or glass to transmit data using light. RJ-11 and RJ-45 and connector types not cable types.

When a device is assigned an address that starts with 169.254, it indicates that it has self-assigned an Automatic Private IP Addressing (APIPA) address. This is a fallback mechanism used when a workstation configured to obtain an address automatically is unable to reach a DHCP server to obtain one. This typically points to issues with the DHCP server itself being unreachable or malfunctioning. It is not due to manual static address configuration, incorrect subnet settings, or interference from a rogue DHCP server, as those scenarios would lead to different outcomes such as deliberate network assignment, connectivity issues related to incorrect network segmentation, or invalid network configurations respectively.

A patch panel is used as a central point to connect and manage the cables from network devices to the ports on the network switch, making the cabling infrastructure neater and more organized. It simplifies cable management by offering a single location where all network cables can be easily connected, disconnected, and rerouted. This greatly aids in maintaining a clear and manageable networking environment within the office space.

Dynamic Host Configuration Protocol (DHCP) is used to assign IP addresses to devices on a network automatically. When a device connects to a network, it sends a request to the DHCP server, which then leases an IP address to the device. This protocol simplifies network management by eliminating the need for manual IP configuration. SNMP is used for managing and monitoring network devices but is not responsible for IP assignment. IMAP is used to retrieve emails from a server and also doesn't handle IP addressing. RDP allows remote connection to another computer but does not relate to assigning IP addresses.

A touch pen, also known as a stylus, is specifically designed to interact with the capacitive touchscreens of modern smartphones and tablets. It allows for more precise control compared to a finger, particularly for drawing or selecting small interface elements.

A port replicator is used to connect a laptop to multiple peripherals through a single connection, thereby expanding the available ports and making it easier to connect and disconnect the laptop from these peripherals. It is not designed to improve the laptop’s internal wireless signal, nor does it serve as an external storage device. Though it might indirectly assist with ergonomics by reducing clutter, this is not its primary purpose.

The technology that uses a constellation of satellites to provide accurate location information to mobile devices is commonly referred to by its initials, which stand for Global Positioning System. This service uses the timing of signals from multiple satellites to calculate the receiver's position on Earth. The other options listed refer to different wireless technologies or services. Cellular triangulation uses the signal from phone towers to determine a less accurate position, while the remaining options, are used for short-range wireless communication and data transmission, not for pinpointing geographic location.

Based on the given options and the correct classifications for IPv4 address spaces:

192.168.0.0 to 192.168.255.255 is classified as a private IPv4 address space. This range is used for local networks and is not routable over the internet, making it the correct answer to your question. The other ranges have specific purposes or classifications different from being standard private IP ranges:

224.0.0.0 to 224.0.0.255 is part of the multicast address range, not a private address space. 172.32.0.0 to 172.36.255.255 is not a recognized private address range according to the standards set by RFC 1918. The private address space in the 172.x.x.x block actually spans from 172.16.0.0 to 172.31.255.255.

169.254.0.0 to 169.254.255.255 is used for Automatic Private IP Addressing (APIPA) for link-local addresses within a single network segment when DHCP is not available, rather than for standard private networking purposes. Therefore, the address range 192.168.0.0 to 192.168.255.255 is the correct answer for a classified private IPv4 address space that is not routable over the internet.

Quality of Service (QoS) is a common feature on routers that allows you to set minimums and maximums to certain types of traffic and give priority to some traffic over others. For example you could set a max bandwidth for some devices or simply give your devices network priority over other device's traffic.

Realigning or reseating the digitizer cable correctly is often necessary after a screen replacement, as touch screen functionality depends heavily on a secure and proper connection. Factors such as dust on the connector or misalignment can cause improper touch input, which matches the symptoms described in the scenario. While recalibrating the touch screen might be another step, it assumes that the digitizer is already correctly installed, making this a subsequent action to ensure proper functionality after addressing hardware concerns like cable connections. Updating the device's firmware or restarting the tablet are appropriate troubleshooting steps for software-related issues, but given that the scenario describes a hardware change (screen replacement), they do not address the fundamental issue described.

Scalable infrastructure is a technical benefit and not a business benefit of cloud computing. Of course this is still indirectly beneficial to a business, but most non-IT department personnel at a business will not know what scalable infrastructure means. It is important to be able to explain the business and technical benefits of different computing options based on your audience.

Port 110 is used for Post Office Protocol version 3 (POP3), which is designed to retrieve emails from a mail server. When using POP3, emails are downloaded to the client and can be deleted from the server thereafter, depending on the client's configuration. This is useful for users who want to manage their emails locally and keep the server mailbox from running out of space.

Garbled prints can indeed be caused by problems with the printer's memory, such as when it is faulty or running low. The printer may not be able to process the print job correctly, resulting in garbled or jumbled output. Other potential causes for garbled prints include driver issues, incorrect settings, or communication errors, but the statement is accurate as printer memory can be a source of this problem.