CompTIA A+ Practice Test (220-1101)

One of the most common causes of a system overheating is CPU fan failure. The CPU fan is an important component within the computer system due to the CPU being one of the main components within the system that produces heat.

Wireless Wide Area Network (WWAN) is a wireless network type that uses the same technology used by cellular networks like LTE, 5G, etc. It is used for larger networks like one spanning a city or large campus.

Non-Volatile Memory Express (NVMe) is a protocol that allows very high speed access to Solid State Drives (SSDs). The important thing to understand about NVMe is that it only defines how the data is read and transferred. The NVMe protocol can be used on M.2 based drives and PCIe based drives. NVMe is not comparible to M.2 because M.2 is not a protocol but instead a physical form factor specification. You can think of NVMe as the logical side while M.2 is the physical side.

VDI on premises does not necessarily require continuous internet connectivity to function. It relies on the local network infrastructure to deliver virtual desktops to users. Continuous internet connectivity would be more relevant to VDI solutions provided through cloud services, where desktops are hosted off-site and delivered over the internet.

Synchronization between a mobile device and cloud services, like Google Workspace, indeed requires an active internet connection to update any changes made on one device across all other devices. Without internet connectivity, the synchronization process cannot occur.

Digital Visual Interface - Integrated (DVI-I) can send both digital and analog signals. DVI-D (Digital), HDMI and Mini-HDMI are digital only cable types.

An IP address starting with 169.254.x.x indicates that the printer is using Automatic Private IP Addressing (APIPA), which usually means that the Dynamic Host Configuration Protocol (DHCP) server is not reachable or not working properly, as APIPA is a fallback when DHCP fails to assign an address.

The correct answer is 'Active touch pen with pressure sensitivity' because these touch pens are designed with specific technology that allows for fine control and are capable of detecting varying levels of pressure, which is crucial for detailed graphic work. Active touch pens often include additional features such as palm rejection, which ensures that only the pen input is detected, even when the hand is resting on the screen. On the other hand, Stylus pens without pressure sensitivity do not provide the nuanced control needed for detailed digital artwork, and a Digital eraser is not a type of touch pen but a feature on some active pens for deleting digital content.

A Private cloud is the correct answer because it provides an organization with its own cloud infrastructure, giving full control over data and resources while still offering the benefits of cloud computing like virtualization, scalability, and provisioning. Public clouds are owned by service providers offering services to the general public, and they don't provide the same level of control over data and resources. Hybrid and Community clouds involve sharing resources with other organizations, which does not meet the CIO's requirement for full control.

Magnetic Disk drives or Hard Disk Drives (HDDs) are common storage devices found in laptops and desktop computers. Flash drives generally refer to external storage devices. Volatile refers to Volatile Memory and loses all data when a laptop is powered off.

If a DHCP server is not available, clients configured for DHCP will auto-configure an IP address from a specific range. This range, designated for this purpose, is 169.254.0.1 through 169.254.255.254. Understanding that this range is reserved for APIPA is crucial because it indicates that the computer has self-assigned an IP address in the absence of a DHCP server. Having knowledge of this range is helpful for network troubleshooting and ensuring connectivity.

Servers should always be given a static IP Address to ensure it can be quickly resolved and any applications using the IP address do not need to be reconfigured.

Given a system with 8 cores and 32GB RAM, an IT specialist can run a maximum of 3 virtual machines, each requiring 2 cores and 4GB RAM, without overallocating resources. This calculation considers the CPU and RAM requirements for both the virtual machines and the host system. More than 3 is not possible, as this leaves no CPU cores for the host machine.

Fiber optic cables are immune to electromagnetic interference (EMI), making them the ideal choice in environments with high EMI. They use light to transmit data, which is not affected by EMI, unlike electrical signals in copper cables.

In a public cloud model, infrastructure resources are shared among multiple tenants (organizations or users) rather than dedicated to a single tenant, which is a characteristic of a private cloud. Public clouds are managed by third-party providers and offer scalable, on-demand services. This multi-tenant environment is one of the fundamental differences between public and private cloud models.