CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
CompTIA A+ Core 1 (1101) | WGU D317
WGU D317 COMPTIA A+ CORE 1 1101 | 300 REAL EXAM QUESTIONS WITH
ANSWERS | 2026 UPDATE | 100% PASS
Q1: What type of connector is used by most modern Android devices for
charging and data transfer?
ANSWER USB-C (Universal Serial Bus Type-C) is the standard connector used
by most modern Android devices.
Q2: Which display technology uses organic compounds that emit light
when electricity is applied, offering deeper blacks and better contrast?
ANSWER OLED (Organic Light-Emitting Diode) uses organic compounds and
does not require a backlight, resulting in true blacks and superior contrast ratios.
Q3: What is the difference between IPS and TN LCD panel types?
ANSWER IPS (In-Plane Switching) panels offer better color accuracy and wider
viewing angles. TN (Twisted Nematic) panels have faster response times and are
cheaper but have narrower viewing angles and poorer color reproduction.
Q4: A user's laptop screen shows correct output on an external monitor but
is blank on the built-in display. What is the most likely cause?
ANSWER The most likely cause is a failed LCD inverter (on older CCFL
screens), a damaged LCD panel, or a faulty display cable/connection between
the motherboard and the screen.
Q5: What wireless standard is used by NFC (Near Field Communication)?
ANSWER NFC operates at 13.56 MHz and is based on ISO/IEC 14443
standards. It enables short-range communication (typically under 4 cm) and is
used for contactless payments and device pairing.
Q6: Which laptop component is typically soldered directly to the
motherboard and CANNOT be upgraded?
ANSWER In many modern ultrabooks and MacBooks, RAM is soldered directly
to the motherboard. Additionally, CPUs in most laptops are also soldered (BGA
package) and cannot be removed or upgraded.
Q7: What is the purpose of a docking station for a laptop?
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, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
ANSWER A docking station expands a laptop's connectivity by providing
additional ports (USB, HDMI, Ethernet, audio), allowing peripherals to remain
connected and enabling the laptop to function like a desktop workstation.
Q8: What is the standard used for wireless charging in mobile devices?
ANSWER Qi (pronounced 'chee') is the most widely adopted wireless charging
standard, developed by the Wireless Power Consortium (WPC), operating at
100–205 kHz.
Q9: A mobile device screen has digitizer issues where touch is not
registering correctly. What component needs to be replaced?
ANSWER The digitizer (the touch-sensitive layer of the display assembly) needs
to be replaced. On most modern devices, the digitizer is fused with the LCD and
must be replaced as a single assembly.
Q10: What is the purpose of the SOC (System on a Chip) in mobile
devices?
ANSWER An SoC integrates the CPU, GPU, RAM controller, wireless radios,
and other components onto a single chip, reducing size, power consumption, and
heat generation in mobile devices.
Q11: What does MDM stand for, and what is its primary function?
ANSWER MDM stands for Mobile Device Management. It allows IT
administrators to remotely manage, monitor, configure, and enforce security
policies on mobile devices within an organization.
Q12: Which cellular technology is identified as the current 5th generation
standard providing speeds up to 10 Gbps?
ANSWER 5G NR (New Radio) is the 5th generation cellular standard. It
operates on sub-6 GHz and mmWave (millimeter wave) frequencies and can
achieve theoretical download speeds up to 10 Gbps.
Q13: What is the difference between GPS and A-GPS?
ANSWER GPS (Global Positioning System) relies solely on satellite signals and
can be slow to acquire a fix. A-GPS (Assisted GPS) uses cellular network data,
Wi-Fi, and server-side assistance to speed up the initial position fix.
Q14: What type of memory card format is most commonly used in Android
smartphones?
ANSWER microSDXC (micro Secure Digital eXtended Capacity) cards are most
commonly used in Android smartphones, supporting capacities up to 2 TB.
Q15: A laptop battery is swollen/bulging. What action should a technician
take?
Page 2 of 43
, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
ANSWER A swollen lithium-based battery is a serious safety hazard due to risk
of fire or explosion. The technician should power off the device, handle it
carefully, and replace the battery immediately. Never puncture or throw in regular
trash — follow proper e-waste disposal procedures.
Q16: What is the purpose of the accelerometer in a mobile device?
ANSWER An accelerometer measures acceleration forces along X, Y, and Z
axes, enabling screen auto-rotation, step counting (pedometer), gaming motion
controls, and orientation detection.
Q17: What connector type is used on Apple iPhones (8th generation and
later)?
ANSWER Apple iPhones (from iPhone 5 through iPhone 14) use the Lightning
connector. iPhone 15 and later switched to USB-C.
Q18: What is the purpose of a gyroscope in a mobile device?
ANSWER A gyroscope measures rotational movement and angular velocity
around three axes. It works with the accelerometer for accurate motion sensing,
used in AR applications, gaming, and image stabilization.
Q19: Which display technology used in older laptops requires a separate
inverter board to power the backlight?
ANSWER CCFL (Cold Cathode Fluorescent Lamp) backlights, used in older
LCD panels, require a high-voltage inverter board. Modern laptops use LED
backlights which do not need an inverter.
Q20: What is the maximum theoretical data transfer speed of USB 3.2 Gen
2x2?
ANSWER USB 3.2 Gen 2x2 (also called SuperSpeed USB 20Gbps) provides a
maximum theoretical transfer rate of 20 Gbps using two lanes of USB 3.2 Gen 2.
Domain 2: Networking Fundamentals (Q21–Q50)
Q21: What is the maximum cable length for Cat6 Ethernet in a standard
network installation?
ANSWER The maximum recommended cable length for Cat5e, Cat6, and Cat6a
in a standard 100BASE-T or 1000BASE-T (Gigabit) Ethernet installation is 100
meters (328 feet).
Q22: What is the difference between a hub and a switch?
ANSWER A hub (Layer 1) broadcasts all received data to every port, creating a
shared collision domain. A switch (Layer 2) uses MAC address tables to forward
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, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
frames only to the intended destination port, creating separate collision domains
for each port.
Q23: Which IEEE 802.11 standard operates ONLY on the 5 GHz band?
ANSWER IEEE 802.11a operates exclusively on the 5 GHz band and provides
speeds up to 54 Mbps. Additionally, 802.11ac (Wi-Fi 5) operates primarily on 5
GHz, and 802.11ax (Wi-Fi 6) operates on both 2.4 GHz and 5 GHz.
Q24: What is the purpose of a DHCP server?
ANSWER A DHCP (Dynamic Host Configuration Protocol) server automatically
assigns IP addresses, subnet masks, default gateways, DNS server addresses,
and other network configuration parameters to client devices.
Q25: What does SSID stand for, and what is its purpose?
ANSWER SSID stands for Service Set Identifier. It is the name of a wireless
network broadcast by an access point, allowing users to identify and connect to a
specific Wi-Fi network.
Q26: What is the difference between 2.4 GHz and 5 GHz Wi-Fi bands?
ANSWER 2.4 GHz offers greater range and better penetration through walls but
slower speeds and more interference (only 3 non-overlapping channels). 5 GHz
offers faster speeds and less congestion but shorter range and poorer obstacle
penetration (23 non-overlapping channels).
Q27: What port number does HTTPS use?
ANSWER HTTPS (Hypertext Transfer Protocol Secure) uses TCP port 443.
Q28: What is the purpose of NAT (Network Address Translation)?
ANSWER NAT allows multiple devices on a private network to share a single
public IP address. It translates private IP addresses to the public IP for outbound
traffic and reverses the translation for inbound responses.
Q29: What is the subnet mask for a /24 network?
ANSWER A /24 prefix (CIDR notation) corresponds to a subnet mask of
255.255.255.0, providing 256 total addresses (254 usable host addresses).
Q30: What protocol is used by email clients to RECEIVE email from a
server?
ANSWER POP3 (Post Office Protocol 3, port 110) downloads and typically
deletes emails from the server. IMAP (Internet Message Access Protocol, port
143) keeps emails on the server and syncs across devices. Both are used to
receive email.
Q31: What is the purpose of DNS?
Page 4 of 43
CompTIA A+ Core 1 (1101) | WGU D317
WGU D317 COMPTIA A+ CORE 1 1101 | 300 REAL EXAM QUESTIONS WITH
ANSWERS | 2026 UPDATE | 100% PASS
Q1: What type of connector is used by most modern Android devices for
charging and data transfer?
ANSWER USB-C (Universal Serial Bus Type-C) is the standard connector used
by most modern Android devices.
Q2: Which display technology uses organic compounds that emit light
when electricity is applied, offering deeper blacks and better contrast?
ANSWER OLED (Organic Light-Emitting Diode) uses organic compounds and
does not require a backlight, resulting in true blacks and superior contrast ratios.
Q3: What is the difference between IPS and TN LCD panel types?
ANSWER IPS (In-Plane Switching) panels offer better color accuracy and wider
viewing angles. TN (Twisted Nematic) panels have faster response times and are
cheaper but have narrower viewing angles and poorer color reproduction.
Q4: A user's laptop screen shows correct output on an external monitor but
is blank on the built-in display. What is the most likely cause?
ANSWER The most likely cause is a failed LCD inverter (on older CCFL
screens), a damaged LCD panel, or a faulty display cable/connection between
the motherboard and the screen.
Q5: What wireless standard is used by NFC (Near Field Communication)?
ANSWER NFC operates at 13.56 MHz and is based on ISO/IEC 14443
standards. It enables short-range communication (typically under 4 cm) and is
used for contactless payments and device pairing.
Q6: Which laptop component is typically soldered directly to the
motherboard and CANNOT be upgraded?
ANSWER In many modern ultrabooks and MacBooks, RAM is soldered directly
to the motherboard. Additionally, CPUs in most laptops are also soldered (BGA
package) and cannot be removed or upgraded.
Q7: What is the purpose of a docking station for a laptop?
Page 1 of 43
, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
ANSWER A docking station expands a laptop's connectivity by providing
additional ports (USB, HDMI, Ethernet, audio), allowing peripherals to remain
connected and enabling the laptop to function like a desktop workstation.
Q8: What is the standard used for wireless charging in mobile devices?
ANSWER Qi (pronounced 'chee') is the most widely adopted wireless charging
standard, developed by the Wireless Power Consortium (WPC), operating at
100–205 kHz.
Q9: A mobile device screen has digitizer issues where touch is not
registering correctly. What component needs to be replaced?
ANSWER The digitizer (the touch-sensitive layer of the display assembly) needs
to be replaced. On most modern devices, the digitizer is fused with the LCD and
must be replaced as a single assembly.
Q10: What is the purpose of the SOC (System on a Chip) in mobile
devices?
ANSWER An SoC integrates the CPU, GPU, RAM controller, wireless radios,
and other components onto a single chip, reducing size, power consumption, and
heat generation in mobile devices.
Q11: What does MDM stand for, and what is its primary function?
ANSWER MDM stands for Mobile Device Management. It allows IT
administrators to remotely manage, monitor, configure, and enforce security
policies on mobile devices within an organization.
Q12: Which cellular technology is identified as the current 5th generation
standard providing speeds up to 10 Gbps?
ANSWER 5G NR (New Radio) is the 5th generation cellular standard. It
operates on sub-6 GHz and mmWave (millimeter wave) frequencies and can
achieve theoretical download speeds up to 10 Gbps.
Q13: What is the difference between GPS and A-GPS?
ANSWER GPS (Global Positioning System) relies solely on satellite signals and
can be slow to acquire a fix. A-GPS (Assisted GPS) uses cellular network data,
Wi-Fi, and server-side assistance to speed up the initial position fix.
Q14: What type of memory card format is most commonly used in Android
smartphones?
ANSWER microSDXC (micro Secure Digital eXtended Capacity) cards are most
commonly used in Android smartphones, supporting capacities up to 2 TB.
Q15: A laptop battery is swollen/bulging. What action should a technician
take?
Page 2 of 43
, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
ANSWER A swollen lithium-based battery is a serious safety hazard due to risk
of fire or explosion. The technician should power off the device, handle it
carefully, and replace the battery immediately. Never puncture or throw in regular
trash — follow proper e-waste disposal procedures.
Q16: What is the purpose of the accelerometer in a mobile device?
ANSWER An accelerometer measures acceleration forces along X, Y, and Z
axes, enabling screen auto-rotation, step counting (pedometer), gaming motion
controls, and orientation detection.
Q17: What connector type is used on Apple iPhones (8th generation and
later)?
ANSWER Apple iPhones (from iPhone 5 through iPhone 14) use the Lightning
connector. iPhone 15 and later switched to USB-C.
Q18: What is the purpose of a gyroscope in a mobile device?
ANSWER A gyroscope measures rotational movement and angular velocity
around three axes. It works with the accelerometer for accurate motion sensing,
used in AR applications, gaming, and image stabilization.
Q19: Which display technology used in older laptops requires a separate
inverter board to power the backlight?
ANSWER CCFL (Cold Cathode Fluorescent Lamp) backlights, used in older
LCD panels, require a high-voltage inverter board. Modern laptops use LED
backlights which do not need an inverter.
Q20: What is the maximum theoretical data transfer speed of USB 3.2 Gen
2x2?
ANSWER USB 3.2 Gen 2x2 (also called SuperSpeed USB 20Gbps) provides a
maximum theoretical transfer rate of 20 Gbps using two lanes of USB 3.2 Gen 2.
Domain 2: Networking Fundamentals (Q21–Q50)
Q21: What is the maximum cable length for Cat6 Ethernet in a standard
network installation?
ANSWER The maximum recommended cable length for Cat5e, Cat6, and Cat6a
in a standard 100BASE-T or 1000BASE-T (Gigabit) Ethernet installation is 100
meters (328 feet).
Q22: What is the difference between a hub and a switch?
ANSWER A hub (Layer 1) broadcasts all received data to every port, creating a
shared collision domain. A switch (Layer 2) uses MAC address tables to forward
Page 3 of 43
, CompTIA A+ 1101 | WGU D317 | 2026 Exam Prep
frames only to the intended destination port, creating separate collision domains
for each port.
Q23: Which IEEE 802.11 standard operates ONLY on the 5 GHz band?
ANSWER IEEE 802.11a operates exclusively on the 5 GHz band and provides
speeds up to 54 Mbps. Additionally, 802.11ac (Wi-Fi 5) operates primarily on 5
GHz, and 802.11ax (Wi-Fi 6) operates on both 2.4 GHz and 5 GHz.
Q24: What is the purpose of a DHCP server?
ANSWER A DHCP (Dynamic Host Configuration Protocol) server automatically
assigns IP addresses, subnet masks, default gateways, DNS server addresses,
and other network configuration parameters to client devices.
Q25: What does SSID stand for, and what is its purpose?
ANSWER SSID stands for Service Set Identifier. It is the name of a wireless
network broadcast by an access point, allowing users to identify and connect to a
specific Wi-Fi network.
Q26: What is the difference between 2.4 GHz and 5 GHz Wi-Fi bands?
ANSWER 2.4 GHz offers greater range and better penetration through walls but
slower speeds and more interference (only 3 non-overlapping channels). 5 GHz
offers faster speeds and less congestion but shorter range and poorer obstacle
penetration (23 non-overlapping channels).
Q27: What port number does HTTPS use?
ANSWER HTTPS (Hypertext Transfer Protocol Secure) uses TCP port 443.
Q28: What is the purpose of NAT (Network Address Translation)?
ANSWER NAT allows multiple devices on a private network to share a single
public IP address. It translates private IP addresses to the public IP for outbound
traffic and reverses the translation for inbound responses.
Q29: What is the subnet mask for a /24 network?
ANSWER A /24 prefix (CIDR notation) corresponds to a subnet mask of
255.255.255.0, providing 256 total addresses (254 usable host addresses).
Q30: What protocol is used by email clients to RECEIVE email from a
server?
ANSWER POP3 (Post Office Protocol 3, port 110) downloads and typically
deletes emails from the server. IMAP (Internet Message Access Protocol, port
143) keeps emails on the server and syncs across devices. Both are used to
receive email.
Q31: What is the purpose of DNS?
Page 4 of 43
