{"id":22273,"date":"2026-09-25T12:08:56","date_gmt":"2026-09-25T12:08:56","guid":{"rendered":"https:\/\/www.examlabs.com\/certification\/?p=22273"},"modified":"2026-09-25T12:08:56","modified_gmt":"2026-09-25T12:08:56","slug":"comptia-a-220-1101-practice-test-questions-and-exam-dumps-part4-q61-80","status":"publish","type":"post","link":"https:\/\/www.examlabs.com\/certification\/comptia-a-220-1101-practice-test-questions-and-exam-dumps-part4-q61-80\/","title":{"rendered":"CompTIA A+ 220-1101 Practice Test Questions and Exam Dumps Part4 Q61-80"},"content":{"rendered":"<h2><b>View Full <\/b><a href=\"https:\/\/www.examlabs.com\/220-1101-exam-dumps\"><b>CompTIA A+ 220-1101 Exam Dumps<\/b><\/a><b> and Practice Test Dumps<\/b><\/h2>\n<p>&nbsp;<\/p>\n<h3><b>Question 61.<\/b><\/h3>\n<p><b>Which connector is commonly used for CPU power on a motherboard?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SATA power<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PCIe power<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Molex<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ATX12V<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 4<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The ATX12V connector supplies dedicated power to the processor through the motherboard. Depending on the platform, modern systems may use a 4-pin or 8-pin CPU power connector, with some high-performance systems requiring additional CPU power connections. SATA power connectors are primarily used for storage devices, while PCIe power connectors commonly provide additional power to graphics cards. Molex connectors are older peripheral power connectors. When assembling or troubleshooting a desktop computer, technicians should ensure the CPU power connector is firmly attached because the system may fail to boot if it is missing.<\/span><\/p>\n<h3><b>Question 62.<\/b><\/h3>\n<p><b>Which storage technology has no moving mechanical parts?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HDD<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SSD<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optical drive<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tape drive<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A solid-state drive uses flash memory and contains no spinning platters or mechanical read\/write heads. This allows SSDs to provide faster access times and generally better resistance to physical shock than traditional mechanical hard disk drives. HDDs use spinning magnetic platters, optical drives use rotating discs, and tape drives use magnetic tape mechanisms. SSDs can use different interfaces, including SATA and NVMe. When selecting an SSD, technicians should consider capacity, interface, form factor, endurance, performance requirements, and motherboard compatibility rather than assuming every SSD uses the same technology.<\/span><\/p>\n<h3><b>Question 63.<\/b><\/h3>\n<p><b>Which protocol provides automatic time synchronization across network devices?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">FTP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">IMAP<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">LDAP<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Network Time Protocol, or NTP, synchronizes clocks between computers and network devices. Accurate system time is important for authentication, logging, security events, scheduled tasks, and troubleshooting. FTP is used for file transfers, IMAP provides email retrieval and synchronization, and LDAP provides directory-service access. If system clocks become significantly inaccurate, authentication mechanisms and event correlation can be affected. Technicians troubleshooting time-related problems should verify the configured NTP source, network connectivity, firewall permissions, time zone settings, and whether the system is actually synchronizing successfully.<\/span><\/p>\n<h3><b>Question 64.<\/b><\/h3>\n<p><b>Which motherboard slot is designed for installing a wireless adapter?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DIMM<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CPU socket<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PCIe<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SATA port<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">PCI Express slots can accommodate various expansion cards, including compatible wireless network adapters. Depending on the adapter and motherboard, a wireless card may use a small PCIe slot such as x1. DIMM slots are designed for system memory, the CPU socket holds the processor, and SATA ports connect compatible storage devices. When installing a PCIe wireless adapter, technicians should verify slot compatibility, available space, antenna connections, driver support, and operating-system recognition. Proper antenna placement can also affect wireless signal strength and overall network performance.<\/span><\/p>\n<h3><b>Question 65.<\/b><\/h3>\n<p><b>Which display characteristic describes the number of pixels shown on screen?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Contrast ratio<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Response time<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Resolution<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Refresh interval<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Display resolution describes the number of horizontal and vertical pixels available for displaying content. A higher resolution can provide greater image detail and more workspace, provided the graphics hardware and display support it. Contrast ratio describes the difference between dark and bright areas, response time measures how quickly pixels change states, and refresh rate describes how frequently the display updates its image. When configuring a monitor, technicians should ensure the selected resolution is supported by the display and graphics adapter and consider scaling settings for comfortable viewing.<\/span><\/p>\n<h3><b>Question 66.<\/b><\/h3>\n<p><b>Which component protects a system from overheating by increasing airflow?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Case fan<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CMOS battery<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Network adapter<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sound card<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Case fans move air through a computer chassis to remove heat generated by components such as the processor, graphics card, and power circuitry. Proper airflow typically requires a balance between intake and exhaust fans so that heated air can leave the enclosure efficiently. The CMOS battery maintains selected motherboard functions, while network adapters provide connectivity and sound cards handle audio processing. When diagnosing overheating, technicians should inspect fan operation, dust buildup, airflow direction, cable obstruction, thermal interfaces, and ambient temperature rather than assuming the processor itself is defective.<\/span><\/p>\n<h3><b>Question 67.<\/b><\/h3>\n<p><b>Which wireless frequency generally provides greater range through walls?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">6 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">5 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">2.4 GHz<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">60 GHz<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The 2.4 GHz Wi-Fi band generally provides greater propagation through walls and obstacles than higher-frequency bands such as 5 GHz and 6 GHz. However, 2.4 GHz also has fewer non-overlapping channels and can experience interference from devices such as Bluetooth equipment and some household appliances. Higher-frequency Wi-Fi bands can provide greater throughput under suitable conditions but typically have shorter effective range through obstacles. Technicians selecting a wireless band should consider distance, wall construction, interference, client capabilities, required bandwidth, and access-point placement.<\/span><\/p>\n<h3><b>Question 68.<\/b><\/h3>\n<p><b>Which connector is primarily designed for digital video output?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DisplayPort<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">RJ45<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PS\/2<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DB-9<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">DisplayPort is a digital interface designed primarily for connecting computers and other source devices to compatible displays. It can carry high-resolution video and, depending on implementation, digital audio as well. RJ45 connectors are commonly used for Ethernet, PS\/2 connectors are associated with legacy keyboards and mice, and DB-9 connectors have been used for serial communication and other legacy interfaces. When troubleshooting a DisplayPort connection, technicians should verify the selected monitor input, cable compatibility, graphics configuration, supported resolution, and whether the source device is correctly detecting the display.<\/span><\/p>\n<h3><b>Question 69.<\/b><\/h3>\n<p><b>Which component stores frequently accessed processor instructions?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">System RAM<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Cache memory<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hard drive<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">USB flash<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Cache memory is high-speed memory located within or near the processor and stores frequently accessed instructions and data. It helps reduce the time the CPU spends waiting for information from slower system memory. Modern processors commonly include multiple cache levels, each designed with different capacity and access characteristics. System RAM provides the processor with a larger working area but is slower than CPU cache. Hard drives and USB flash devices provide persistent storage rather than high-speed processor cache. Cache size and architecture are important factors when evaluating processor specifications.<\/span><\/p>\n<h3><b>Question 70.<\/b><\/h3>\n<p><b>Which network medium uses copper conductors twisted together to reduce interference?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Fiber optic<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Coaxial<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Twisted pair<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Infrared<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Twisted-pair cabling uses pairs of copper conductors twisted together to reduce electromagnetic interference and crosstalk. It is widely used for Ethernet networking and telephone connections. Different cable categories support different performance characteristics and transmission requirements. Fiber-optic cable uses light rather than electrical signals, coaxial cable uses a central conductor with shielding, and infrared uses light-based wireless communication. When installing twisted-pair Ethernet, technicians should observe maximum cable lengths, appropriate category requirements, proper termination, and separation from significant sources of electrical interference.<\/span><\/p>\n<h3><b>Question 71.<\/b><\/h3>\n<p><b>Which feature lets a laptop operate with its lid closed while using an external display?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Docking support<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sleep timer<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lid-close action<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Screen mirroring<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">The operating system&#8217;s lid-close action determines what happens when a laptop lid is closed. On supported systems, users can configure the laptop to remain active rather than entering sleep mode, allowing an external monitor, keyboard, and mouse to continue being used. Docking support describes broader hardware and connectivity capabilities. Screen mirroring controls how displays present content, while a sleep timer manages inactivity-based power behavior. Technicians configuring this setup should also consider cooling, external power, display settings, and whether the laptop manufacturer supports operation with the lid closed.<\/span><\/p>\n<h3><b>Question 72.<\/b><\/h3>\n<p><b>Which connector carries digital video but normally no analog signal?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DVI-D<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">VGA<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">RCA<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S-Video<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">DVI-D is designed to carry digital video signals and does not provide the analog signal capability associated with DVI-I. VGA carries analog video, while RCA and S-Video are older analog video connection methods. DVI-D was widely used before HDMI and DisplayPort became more common in modern systems. When connecting a DVI-D source to a display, technicians should verify that both devices support compatible digital signaling and that the required cable or adapter is appropriate. Passive adapters cannot convert incompatible signal types without the necessary conversion hardware.<\/span><\/p>\n<h3><b>Question 73.<\/b><\/h3>\n<p><b>Which technology allows a computer to boot from a network server?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">PXE<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">RAID<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TPM<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">POST<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Preboot Execution Environment, or PXE, allows a compatible computer to obtain boot information from a network and load an operating-system image or deployment environment. It is commonly used in enterprise environments for operating-system deployment, imaging, and provisioning. RAID provides storage redundancy or performance features, TPM provides hardware-based security functions, and POST performs hardware initialization checks during startup. PXE deployments typically require appropriate network infrastructure and services such as DHCP and a boot server. Technicians should verify firmware network-boot settings and network connectivity when troubleshooting PXE startup failures.<\/span><\/p>\n<h3><b>Question 74.<\/b><\/h3>\n<p><b>Which device converts optical signals into electrical network signals?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Repeater<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Media converter<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Patch panel<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Network tap<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 2<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A media converter translates signals between different physical network media, such as fiber optic and copper Ethernet. This allows devices using different transmission media to communicate across a network connection. A repeater regenerates signals to extend transmission distance, a patch panel provides organized cable termination, and a network tap provides a monitoring point for network traffic. When installing a media converter, technicians should verify compatible fiber types, connector styles, transmission speeds, duplex requirements, and Ethernet standards to ensure proper communication between the connected segments.<\/span><\/p>\n<h3><b>Question 75.<\/b><\/h3>\n<p><b>Which CPU feature reduces power consumption during periods of low workload?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Turbo mode<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Overclocking<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dynamic frequency scaling<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Multithreading<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Dynamic frequency scaling adjusts processor frequency according to workload and power requirements. When demand is low, the processor can reduce operating frequency and often voltage, decreasing energy consumption and heat generation. When workload increases, the processor can raise performance within supported thermal and power limits. Turbo technologies are designed to increase frequency under suitable conditions, overclocking intentionally raises operating parameters beyond standard configurations, and multithreading improves utilization of processor resources. Power-management behavior can vary by processor, firmware, operating system, and configured performance profile.<\/span><\/p>\n<h3><b>Question 76.<\/b><\/h3>\n<p><b>Which connector is commonly used for a wired Ethernet connection?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">RJ45<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">USB-C<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HDMI<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">3.5mm<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">RJ45 connectors are commonly used with twisted-pair Ethernet cables for wired network connections. They connect computers, switches, routers, access points, and other network devices. USB-C supports numerous peripheral and data functions, HDMI is primarily used for digital audio and video, and 3.5mm connectors are commonly used for analog audio. When diagnosing an Ethernet connection, technicians can inspect the RJ45 plug, cable, port link indicators, adapter status, IP configuration, and switch connectivity. Cable category and physical damage should also be considered when troubleshooting performance problems.<\/span><\/p>\n<h3><b>Question 77.<\/b><\/h3>\n<p><b>Which storage device typically provides the lowest access latency?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">HDD<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optical disc<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">NVMe SSD<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tape drive<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">NVMe SSDs typically provide very low access latency because they use solid-state flash memory and communicate through PCI Express. NVMe was designed specifically to take advantage of the parallelism and low latency available through modern PCIe interfaces. HDDs rely on mechanical movement, optical discs require physical disc access, and tape drives use sequential magnetic media. Actual performance depends on the specific hardware, workload, thermal conditions, and system configuration. Technicians selecting high-performance storage should consider sustained throughput, random access performance, endurance, capacity, and interface compatibility.<\/span><\/p>\n<h3><b>Question 78.<\/b><\/h3>\n<p><b>Which mobile component detects ambient light for automatic brightness adjustment?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Proximity sensor<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Accelerometer<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ambient light sensor<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Magnetometer<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 3<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">An ambient light sensor measures surrounding light levels and allows compatible devices to adjust screen brightness automatically. This can improve visibility under changing lighting conditions and may reduce unnecessary power consumption. A proximity sensor detects nearby objects and is often used to turn off a phone display during calls. An accelerometer detects linear movement and orientation changes, while a magnetometer detects magnetic fields and can support compass functionality. When automatic brightness behaves unexpectedly, technicians can inspect sensor settings, software permissions, physical obstruction, calibration, and relevant device drivers or firmware.<\/span><\/p>\n<h3><b>Question 79.<\/b><\/h3>\n<p><b>Which component temporarily stores frequently used graphics data?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">GPU VRAM<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CMOS<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">System firmware<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Optical cache<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Video RAM, or VRAM, is dedicated memory used by a graphics processor to store graphics-related data such as textures, frame buffers, and other information needed for rendering. Dedicated graphics cards typically include their own VRAM, while integrated graphics may use a portion of system memory. CMOS stores configuration information, system firmware contains low-level instructions, and optical cache is not a standard graphics-memory technology. The amount and type of VRAM can affect performance in graphics-intensive workloads, although GPU architecture, bandwidth, processing power, and software also have significant impact.<\/span><\/p>\n<h3><b>Question 80.<\/b><\/h3>\n<p><b>Which technology securely identifies a platform using a dedicated hardware chip?<\/b><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">TPM<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">BIOS<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">CMOS<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">POST<\/span><\/li>\n<\/ol>\n<p><b>Correct Answer: 1<\/b><\/p>\n<p><b>Explanation:<\/b><\/p>\n<p><span style=\"font-weight: 400;\">A Trusted Platform Module, or TPM, is a dedicated security component designed to provide hardware-based security functions. It can securely store cryptographic keys and support functions such as device authentication, measured boot, and disk-encryption protection. BIOS or UEFI provides firmware-based system initialization, CMOS-related storage maintains selected configuration information, and POST checks hardware during startup. TPM capabilities can be integrated into a motherboard or provided through firmware implementations depending on the platform. Technicians should verify TPM availability and firmware configuration when deploying security features that depend on it.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>View Full CompTIA A+ 220-1101 Exam Dumps and Practice Test Dumps &nbsp; Question 61. Which connector is commonly used for CPU power on a motherboard? SATA power PCIe power Molex ATX12V Correct Answer: 4 Explanation: The ATX12V connector supplies dedicated power to the processor through the motherboard. Depending on the platform, modern systems may use [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1648,1647],"tags":[],"_links":{"self":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/22273"}],"collection":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/comments?post=22273"}],"version-history":[{"count":1,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/22273\/revisions"}],"predecessor-version":[{"id":22274,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/posts\/22273\/revisions\/22274"}],"wp:attachment":[{"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/media?parent=22273"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/categories?post=22273"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.examlabs.com\/certification\/wp-json\/wp\/v2\/tags?post=22273"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}