CompTIA A+ Online Quiz

USB-C features a symmetrical reversible connector that can be inserted in either orientation. USB-A, Micro-USB, and Mini-USB all have specific orientations and must be plugged in correctly. The reversible design is USB-C's key usability feature.

When malware is identified, the first priority is containing the threat by isolating the system from the network to prevent spread or data exfiltration. Moving to a lab with no network connectivity is the immediate containment step. Updates, scans, and user education come after containment.

Spear phishing uses personalized information about specific targets to make attacks more convincing. Unlike generic phishing which casts a wide net, spear phishing tailors messages using the victim's name, role, or other personal details. Spoofing fakes identities, and impersonation pretends to be someone else - but spear phishing is defined by its personalized approach.

When an employee cannot access in-office network folders from home, the most likely cause is VPN disconnection. VPNs create secure tunnels to office networks; without an active VPN connection, remote employees cannot access internal network resources. Bad credentials would cause authentication errors, not inability to view folders.

When recycling PCs for reuse, low-level formatting is the most appropriate method to ensure data is gone. Low-level formatting overwrites the entire disk surface, making data unrecoverable. Standard formatting only clears the file system table, and high-level formatting is not a standard term. HD drilling destroys the disk, preventing reuse.

An in-place upgrade installs the new OS while preserving existing applications, settings, and files. This is ideal when you want to maintain the current configuration. Clean installation wipes everything, image deployment copies a pre-built image, and 'safe installation' is not a standard installation method.

Dumpster diving involves searching through trash or recycling bins to find sensitive information like passwords, account numbers, or corporate documents. This physical social engineering attack exploits improper disposal practices. Phishing and spear phishing use electronic messages, while impersonation involves pretending to be someone else.

Remote wipe completely erases all data on the iPhone, providing the strongest protection against unauthorized access. Remote lock only prevents access but doesn't remove data. Remote access is not a security feature, and remote shutdown is not the correct term for iOS data protection features.

chkdsk /f fixes file system errors on the disk. The /f switch specifically tells chkdsk to fix any errors found, unlike /r which also locates bad sectors. Option C is incorrect - /f does not refer to a specific drive letter.

tracert is the Windows command that displays the route (path) packets take to a destination by showing each hop along the way. traceroute is the Unix/Linux equivalent. ping only tests if a host is reachable without showing the route.

microSD cards add storage to mobile phones and are not supported on Apple devices. SIM cards are for carrier identification, not storage. miniSD is an older, larger format that's not compatible with most modern phones.

LCD (Liquid Crystal Display) technology works by shining light through liquid crystals to create images. LED displays use light-emitting diodes as the light source. OLED uses organic compounds that emit light when current flows through them.

The OS not found error occurs because the computer tried to boot from the USB drive instead of the hard drive. This happens when the boot sequence has USB before the hard drive. A corrupted file or virus wouldn't cause this specific boot error.

Dropbox is a Public Cloud service because it's accessible to anyone over the internet. Public cloud services are available to the general public. Hybrid cloud combines public and private, while community cloud is shared by organizations with common concerns.

When a computer is completely dead, first check if the power supply is functional - no power means nothing else matters. CMOS battery, outlet voltage, and EMI checks come later. A dead computer typically has a power delivery issue.

SaaS (Software as a Service) allows access via web browser without installation. IaaS provides infrastructure, PaaS provides development platforms, TaaS is not a standard cloud service model. SaaS is what enables browser-based applications.

To extend a laptop display to a second monitor, you select Monitor 2 and choose Extend My Desktop. This creates a continuous workspace across both screens. Other options describe non-existent or incorrect methods for dual monitor setup.

Laptop internal expansion cards, such as wireless network adapters, typically use the Mini-PCIe or newer M.2 form factor. USB and IEEE1394 (FireWire) are external interfaces, while Bluetooth is a wireless standard rather than an expansion slot interface.

A dynamic IP address is temporarily assigned to a device from a pool of available addresses each time it connects to the network. In contrast, a static IP address remains constant and does not change between sessions.

A private cloud is dedicated solely to a single organization, providing the highest level of control, ownership, and security over data and infrastructure. Public and hybrid clouds involve shared infrastructure, while Confidential and Secure clouds are not standard deployment models in this context.

An NVMe M.2 SSD uses the Non-Volatile Memory Express protocol over a PCIe interface, offering extremely fast read and write speeds. While standard M.2 drives can also run on the slower SATA interface, NVMe specifically indicates the high-performance controller.

The highest standard rotational speed for high-performance enterprise magnetic hard drives is 15,000 rpm. Higher speeds like 25,000 or 40,000 rpm are not commercially available or practical due to physical limitations and heat generation.

When a system fails to recognize the full capacity of a newly installed large hard drive, it is often due to outdated motherboard firmware. Flashing the BIOS updates the system's low-level hardware support, allowing it to correctly address and recognize larger storage capacities.

Error-Correcting Code (ECC) memory can detect and correct single-bit errors in data, preventing system crashes and data corruption. Non-parity and standard dual-channel RAM do not have this built-in capability to correct errors on the fly.

The eSATA (external Serial ATA) interface is specifically designed to connect external storage drives at speeds comparable to internal SATA drives. Standard SATA and EIDE are internal interfaces, making them unsuitable for external connections without an enclosure.

RAID 0 stripes data across multiple drives, providing the fastest read and write speeds, which is ideal for demanding tasks like video editing. Hardware-based RAID is superior to software-based RAID because it offloads the processing overhead from the CPU to a dedicated RAID controller.

PCI Express (PCIe) utilizes high-speed serial connections called lanes to transmit data, allowing for much higher bandwidth than older parallel standards. PCI, PCI-X, and AGP are older expansion slot standards that rely on parallel communication.

A network hub is a legacy device that lacks the intelligence to route traffic, so it broadcasts all incoming data packets to every connected port. Switches and routers are more advanced devices that direct traffic only to the intended recipient.

RAID 0 stripes data across two or more drives, allowing simultaneous read and write operations to maximize performance. However, it offers no fault tolerance, meaning the failure of a single drive results in complete data loss.

Modern PCI Express video cards feature HDMI and DisplayPort outputs, which are designed to transmit high-definition video and multi-channel audio simultaneously. Other expansion cards, like LAN or RAID cards, do not handle direct audio and video output.