View Full CompTIA A+ 220-1101 Exam Dumps and Practice Test Dumps

 

Question 101.

Which connector is used for motherboard front-panel switches?

1. SATA header
2. CPU socket
3. DIMM slot
4. System panel header

Correct Answer: 4

Explanation:

The system panel header connects case controls and indicators to the motherboard. Typical connections include the power switch, reset switch, power LED, and storage activity LED. These small connectors are usually grouped near the motherboard edge and are identified in the motherboard documentation. SATA headers connect storage devices, DIMM slots hold system memory, and the CPU socket accommodates the processor. When assembling a computer, technicians should carefully match each front-panel connector with the correct header pins because incorrect connections can prevent switches or indicator lights from functioning properly.

Question 102.

Which technology allows two devices to exchange data by touching?

1. GPS
2. NFC
3. LTE
4. Wi-Fi

Correct Answer: 2

Explanation:

Near Field Communication, or NFC, enables very short-range communication between compatible devices. It is commonly used for contactless payments, access cards, device pairing, and small data exchanges. NFC generally requires devices to be positioned very close together, often within a few centimeters. GPS determines geographic location, LTE provides cellular connectivity, and Wi-Fi supports local wireless networking. When troubleshooting NFC functionality, technicians should verify that NFC is enabled, the participating devices support compatible NFC features, and there are no physical or software conditions preventing the devices from communicating.

Question 103.

Which memory type is commonly used for graphics processing?

1. GDDR
2. DDR
3. SRAM
4. ROM

Correct Answer: 1

Explanation:

GDDR, or Graphics Double Data Rate memory, is designed for high-bandwidth graphics workloads and is commonly installed on dedicated graphics cards. It provides the GPU with fast access to textures, frame buffers, and other rendering data. Standard DDR memory is generally used as system RAM, SRAM is commonly used for processor cache and specialized applications, and ROM is nonvolatile memory used for persistent instructions or firmware-related purposes. When evaluating a graphics card, technicians should consider GDDR generation, capacity, bandwidth, GPU architecture, and the requirements of the intended workload.

Question 104.

Which device provides wireless network access to nearby clients?

1. Router
2. Modem
3. Access point
4. Patch panel

Correct Answer: 3

Explanation:

A wireless access point provides Wi-Fi connectivity to nearby client devices and bridges wireless clients to a wired network. Access points are commonly connected to Ethernet infrastructure and can support multiple wireless clients simultaneously. A router performs traffic forwarding between networks, a modem provides connectivity to a service provider, and a patch panel organizes cable terminations. When deploying an access point, technicians should consider placement, coverage, channel selection, power requirements, authentication settings, and interference from nearby wireless equipment.

Question 105.

Which cable carries broadband signals using a central copper conductor?

1. Twisted pair
2. Fiber optic
3. Coaxial
4. USB

Correct Answer: 3

Explanation:

Coaxial cable contains a central conductor surrounded by insulation, shielding, and an outer protective layer. It is commonly used for cable television, cable internet, antennas, and certain video applications. Twisted-pair cables use paired copper conductors, fiber-optic cables transmit data using light, and USB cables connect compatible peripherals. Coaxial cable types differ in impedance, shielding, and intended applications. When troubleshooting coaxial connectivity, technicians should inspect connectors, cable damage, signal levels, splitters, and termination quality because poor connections can introduce signal loss or interference.

Question 106.

Which processor architecture feature allows separate physical cores to share workload?

1. Multicore processing
2. Disk striping
3. Memory paging
4. Packet switching

Correct Answer: 1

Explanation:

Multicore processing places multiple physical processing cores within a single CPU package. Each core can execute instructions independently, allowing compatible workloads to run concurrently. This can improve responsiveness and performance when software supports parallel execution. Disk striping distributes data across storage devices, memory paging manages virtual memory, and packet switching is a networking technique. The benefits of multiple cores depend on application design and workload characteristics. Technicians evaluating a processor should consider core count along with clock frequency, architecture, cache, thermal limits, and software requirements.

Question 107.

Which connector is commonly used for removable flash storage in cameras?

1. SD card
2. DIMM
3. M.2
4. Compact PCI

Correct Answer: 1

Explanation:

SD cards are removable flash-storage media commonly used in digital cameras, mobile devices, embedded equipment, and other portable electronics. Different SD specifications can provide different capacities, speeds, and physical characteristics. DIMMs are internal system-memory modules, M.2 is a form factor commonly used for internal storage and other devices, and CompactPCI is an embedded computing platform. When selecting an SD card, technicians should verify the device’s supported capacity, speed class, physical format, and application requirements to ensure reliable recording and data transfer.

Question 108.

Which power connector commonly supplies additional power to a graphics card?

1. SATA power
2. PCIe power
3. ATX motherboard
4. Molex peripheral

Correct Answer: 2

Explanation:

PCIe power connectors provide additional electrical power to graphics cards that require more power than the motherboard slot can supply. Depending on the graphics card, different PCIe auxiliary power connector configurations may be used. SATA power connectors commonly serve storage devices, ATX motherboard connectors supply power to the motherboard, and Molex connectors are legacy peripheral power connectors. Before installing a graphics card, technicians should verify that the power supply provides the required connector type and sufficient wattage and that the card has adequate physical clearance inside the chassis.

Question 109.

Which mobile technology provides location information using satellites?

1. NFC
2. Bluetooth
3. GPS
4. Wi-Fi Direct

Correct Answer: 3

Explanation:

Global Positioning System, or GPS, determines location using signals received from satellites. Smartphones, tablets, vehicle systems, and navigation devices commonly use GPS for mapping and location-based services. NFC is designed for very short-range communication, Bluetooth connects nearby peripherals, and Wi-Fi Direct enables devices to communicate directly over Wi-Fi technology. GPS performance can be affected by buildings, environmental conditions, and signal obstruction. When troubleshooting location problems, technicians should check location permissions, satellite visibility, application settings, and whether the device can establish an adequate positioning signal.

Question 110.

Which storage technology is designed for sequential long-term archival?

1. NVMe
2. SSD
3. Tape
4. RAM

Correct Answer: 3

Explanation:

Magnetic tape is commonly used for backup and long-term archival because it can provide high-capacity storage with relatively low media costs. Tape is particularly suitable for sequential access, where data is written or retrieved in an ordered stream. NVMe and SSD technologies provide fast random access and are better suited to active workloads. RAM is volatile working memory and is not intended for long-term storage. Organizations using tape should maintain appropriate media handling, labeling, storage conditions, backup rotation, and restoration procedures to ensure archived information remains usable when needed.

Question 111.

Which feature prevents unauthorized firmware from starting during boot?

1. Secure Boot
2. Fast Boot
3. Sleep Mode
4. Hibernation

Correct Answer: 1

Explanation:

Secure Boot is a firmware security feature that helps ensure only trusted, appropriately signed boot software is executed during system startup. It is commonly implemented through UEFI firmware and can help prevent certain forms of boot-level malware from launching before the operating system. Fast Boot reduces startup initialization time, while Sleep Mode and Hibernation are operating-system power states. When troubleshooting Secure Boot, technicians should inspect UEFI settings, trusted keys, operating-system compatibility, and bootloader configuration. Changing Secure Boot settings can affect some legacy operating systems and hardware.

Question 112.

Which cable is commonly used for cable television and broadband modems?

1. Cat 5e
2. Coaxial
3. Fiber jumper
4. USB 3.0

Correct Answer: 2

Explanation:

Coaxial cable is widely used for cable television and cable broadband services. It carries radio-frequency signals through a central conductor surrounded by shielding that helps reduce interference. Cat 5e is twisted-pair Ethernet cabling, fiber jumpers carry optical signals, and USB 3.0 is a peripheral interface rather than a broadband service cable. When troubleshooting cable modem connectivity, technicians can inspect coaxial connectors, splitters, signal levels, and cable condition. Poorly terminated connectors or excessive splitting can reduce signal quality and cause intermittent connectivity.

Question 113.

Which component provides a physical connection between a CPU and motherboard?

1. CPU socket
2. Expansion bracket
3. Drive cage
4. Heat pipe

Correct Answer: 1

Explanation:

The CPU socket provides the physical and electrical interface between the processor and motherboard. Different processor families use different socket designs, so compatibility must be confirmed before installation. Expansion brackets secure certain components to the chassis, drive cages hold storage devices, and heat pipes transfer heat in cooling assemblies. When installing a processor, technicians should verify socket compatibility, alignment markings, locking mechanisms, and manufacturer installation procedures. Applying excessive force can damage delicate socket contacts, particularly on motherboard sockets with exposed pins.

Question 114.

Which wireless standard operates in the 6 GHz band?

1. 802.11n
2. 802.11ac
3. 802.11ax
4. 802.11g

Correct Answer: 3

Explanation:

Wi-Fi 6E extends Wi-Fi 6 capabilities into the 6 GHz spectrum. The underlying 802.11ax technology is associated with Wi-Fi 6 and Wi-Fi 6E, while 802.11ac is associated with Wi-Fi 5 and 802.11n with Wi-Fi 4. The 6 GHz band can provide additional spectrum and channels for compatible devices, helping reduce congestion in suitable environments. However, support depends on the access point, client hardware, regional regulations, and firmware. Technicians should verify that both infrastructure and client devices support the required 6 GHz functionality.

Question 115.

Which device provides temporary electrical power after an outage?

1. Surge strip
2. UPS
3. Power splitter
4. Voltage meter

Correct Answer: 2

Explanation:

An uninterruptible power supply provides temporary battery-backed electrical power when normal utility power is interrupted. This allows connected equipment to remain operational for a limited period and gives users time to save work or perform an orderly shutdown. A surge strip provides electrical protection but does not normally contain a backup battery. A power splitter distributes connections, while a voltage meter measures electrical voltage. UPS units are rated by their power capacity and expected runtime, so technicians should select a model capable of supporting the connected equipment without exceeding its rated load.

Question 116.

Which motherboard component stores configuration settings using nonvolatile flash memory?

1. UEFI firmware
2. CPU cache
3. RAM module
4. GPU buffer

Correct Answer: 1

Explanation:

UEFI firmware is stored in nonvolatile flash memory on the motherboard. It initializes hardware, provides firmware configuration options, manages boot processes, and can expose security features such as Secure Boot. CPU cache, RAM, and GPU buffers are volatile memory resources used during active system operation. Firmware updates can add hardware compatibility, improve functionality, or address security issues. Technicians should use the correct firmware image for the exact motherboard model and follow manufacturer procedures because an interrupted or incorrect firmware update can prevent a system from starting properly.

Question 117.

Which device provides wired connectivity to multiple Ethernet clients?

1. Modem
2. Switch
3. Antenna
4. Repeater

Correct Answer: 2

Explanation:

An Ethernet switch provides multiple wired network ports for connecting computers, printers, access points, servers, and other network devices. It forwards Ethernet frames according to learned MAC-address information. A modem provides communication with a service provider, an antenna handles radio-frequency transmission or reception, and a repeater regenerates signals to extend a transmission path. When installing a switch, technicians should consider port speed, uplink capacity, PoE requirements, VLAN support, and physical placement. Link indicators can also help diagnose basic cable and connectivity problems.

Question 118.

Which display technology uses liquid crystals with a separate backlight?

1. OLED
2. LCD
3. Plasma
4. E-ink

Correct Answer: 2

Explanation:

LCD, or liquid-crystal display technology, uses a liquid-crystal layer that controls light produced by a separate backlight. Common LCD panels can use different technologies such as IPS and TN, each offering different characteristics. OLED displays use self-emitting pixels, plasma displays use gas-filled cells, and e-ink uses electrophoretic technology commonly associated with low-power reading devices. When troubleshooting an LCD monitor, technicians can check backlight behavior, display cables, input selection, brightness settings, graphics output, and panel damage to determine whether the issue originates from the computer or display.

Question 119.

Which port is commonly used for unencrypted HTTP traffic?

1. 443
2. 22
3. 80
4. 3389

Correct Answer: 3

Explanation:

TCP port 80 is traditionally associated with HTTP traffic. Standard HTTP does not provide the encryption offered by HTTPS, which commonly uses port 443 with TLS. Port 22 is associated with SSH, while port 3389 is commonly used for Remote Desktop Protocol. During troubleshooting, technicians can use port information to identify expected services and investigate firewall rules or connectivity problems. Port numbers are conventions rather than absolute requirements because administrators can configure services to listen on alternative ports.

Question 120.

Which component converts electrical signals into sound output?

1. Network adapter
2. Audio codec
3. Storage controller
4. Display adapter

Correct Answer: 2

Explanation:

An audio codec processes digital and analog audio signals, allowing a computer to convert digital audio information into signals suitable for speakers or headphones and to convert microphone input back into digital data. Network adapters provide network connectivity, storage controllers manage storage communication, and display adapters process visual output. Modern motherboards commonly integrate audio functionality rather than requiring a separate sound card. When troubleshooting audio problems, technicians should check the selected playback device, volume settings, drivers, physical connections, mute status, and whether the audio codec is correctly recognized by the operating system.