COMPTIA A+ 220-1201
Core 1_Comprehensive
Exam Study Set
2026-2027
Master Exam Prep Bundle
(Verified Questions & Answers)
A+ Grade Guaranteed
,Hardware Physical parts of a computer
Software programs and operating systems that instruct hardware on what to do
Firmware Software embedded in hardware components
Four essential functions of a computer Input, processing, storage, output
Safety from electrostatic discharge (ESD) Wear an ESD wriststrap an use an ESD mat
Electrical Safety Always unplug device before working inside it
Chemical safety Read Material Safety Data Sheet (MSDS) when working with hazardous substances
Bit refers to a binary digit of 1 or 0
Nibble four combined bits
byte contains eight bits
1 Kilobit (Kb) 1,000 b
1 Megabit (Mb) 1,000,000 b
1 Gigabit(Gb) 1,000,000,000 b
1 Terabit (1 Tb) 1,000,000,000,000 b
1 Kilobyte (1 KB) 1,000 B
,1 Megabyte (1 MB) 1,000,000 B
1 Gigabyte (GB) 1,000,000,000 B
1 Terabyte (TB) 1,000,000,000,000 B
USB Type A Used with old USB 1.0, 1.1, and, 2.0 standards, and it's still supported with USB 3
and above
USB Type B Connector Smaller USB connector. 2.0 is common in printers and 3.0 is common in cameras.
USB Type B Mini Connector Common on earlier tablets and smartphones
USB Type B Micro Connector Common on speakers, smartwatches, smart glasses, and other wearables
USB Type B 3.0 connector Doesn't have an equivalent type B mini connector like USB 1.0, 1.1, and 2.0, but
instead uses a type B micro connector
USB Type C connector Has 24 pins, 12 on each row. Used with USB 3 and 4. Can be used in either
direction. Commonly found in newer phones, tablets, and laptops. Smaller form
factor, higher speeds.
Serial Cables Came before USB and used DB9 or DB25 connectors
Daisy chain Use USB hubs to connect up to, theoretically, 127 devices.
USB 1.0 (Low Speed) USB with a transfer rate of 1.5 Mbps
USB 1.1 (Full Speed) USB with a transfer rate of 12 Mbps
USB 2.0 (Hi-Speed) USB with a transfer rate of 480 Mbps
USB 3.1 GEN 1 (Superspeed USB) USB with a transfer rate of 5 Gbps
, USB 3.1 GEN 2 (Super Speed USB 10 Gbps) USB with a transfer rate of 10 Gbps
Superspeed USB 20 Gbps USB with a transfer rate of 20 Gbps
USB 4.0 USB with a transfer rate of 40 Gbps
USB 1.0, 1.1, and 2.0 USB that provides 0.5 amps of power
USB 3.0 and 4.0 USB that provides 0.9 amps of power
Powered Device (PD) Port Dedicated power port that can give up to 1500 milliamps or 1.5 amps or 7.5 watts of
power
High-Definition Multimedia Interface (HDMI) Displays 1080p or 1920 x 1080 pixels using a graphical display and provides 60 Hz.
Considered Category 1.
High-resolution HDMI 4k and 8k resolutions with 60, 120, or 144 Hz. Considered Category 2. Premium
High Speed is 18 Gbps while Ultra High Speed is 48 Gbps
HDMI Digital Content Protection (HDCP) Allows a device to validate the connection with the display.
HDMI Type C Mini-HDMI, used in portable devices.
HDMI Type D Micro-HDMI designed for use with compact portable equipment (cell phones)
DisplayPort Competitor of HDMI with an original top speed of 2.7 Gbps but can now go up to 20
Gbps.
MiniDP or mDP Smaller version of DisplayPort
Digital Visual Interface (DVI) designed to support both analog and digital display outputs (I). Introduced in the
90s. Can support only analog (A) or only digital (D) as well.
Video Graphics Array (VGA) Older display technology using a 15-pin standard analog video interface port.
Core 1_Comprehensive
Exam Study Set
2026-2027
Master Exam Prep Bundle
(Verified Questions & Answers)
A+ Grade Guaranteed
,Hardware Physical parts of a computer
Software programs and operating systems that instruct hardware on what to do
Firmware Software embedded in hardware components
Four essential functions of a computer Input, processing, storage, output
Safety from electrostatic discharge (ESD) Wear an ESD wriststrap an use an ESD mat
Electrical Safety Always unplug device before working inside it
Chemical safety Read Material Safety Data Sheet (MSDS) when working with hazardous substances
Bit refers to a binary digit of 1 or 0
Nibble four combined bits
byte contains eight bits
1 Kilobit (Kb) 1,000 b
1 Megabit (Mb) 1,000,000 b
1 Gigabit(Gb) 1,000,000,000 b
1 Terabit (1 Tb) 1,000,000,000,000 b
1 Kilobyte (1 KB) 1,000 B
,1 Megabyte (1 MB) 1,000,000 B
1 Gigabyte (GB) 1,000,000,000 B
1 Terabyte (TB) 1,000,000,000,000 B
USB Type A Used with old USB 1.0, 1.1, and, 2.0 standards, and it's still supported with USB 3
and above
USB Type B Connector Smaller USB connector. 2.0 is common in printers and 3.0 is common in cameras.
USB Type B Mini Connector Common on earlier tablets and smartphones
USB Type B Micro Connector Common on speakers, smartwatches, smart glasses, and other wearables
USB Type B 3.0 connector Doesn't have an equivalent type B mini connector like USB 1.0, 1.1, and 2.0, but
instead uses a type B micro connector
USB Type C connector Has 24 pins, 12 on each row. Used with USB 3 and 4. Can be used in either
direction. Commonly found in newer phones, tablets, and laptops. Smaller form
factor, higher speeds.
Serial Cables Came before USB and used DB9 or DB25 connectors
Daisy chain Use USB hubs to connect up to, theoretically, 127 devices.
USB 1.0 (Low Speed) USB with a transfer rate of 1.5 Mbps
USB 1.1 (Full Speed) USB with a transfer rate of 12 Mbps
USB 2.0 (Hi-Speed) USB with a transfer rate of 480 Mbps
USB 3.1 GEN 1 (Superspeed USB) USB with a transfer rate of 5 Gbps
, USB 3.1 GEN 2 (Super Speed USB 10 Gbps) USB with a transfer rate of 10 Gbps
Superspeed USB 20 Gbps USB with a transfer rate of 20 Gbps
USB 4.0 USB with a transfer rate of 40 Gbps
USB 1.0, 1.1, and 2.0 USB that provides 0.5 amps of power
USB 3.0 and 4.0 USB that provides 0.9 amps of power
Powered Device (PD) Port Dedicated power port that can give up to 1500 milliamps or 1.5 amps or 7.5 watts of
power
High-Definition Multimedia Interface (HDMI) Displays 1080p or 1920 x 1080 pixels using a graphical display and provides 60 Hz.
Considered Category 1.
High-resolution HDMI 4k and 8k resolutions with 60, 120, or 144 Hz. Considered Category 2. Premium
High Speed is 18 Gbps while Ultra High Speed is 48 Gbps
HDMI Digital Content Protection (HDCP) Allows a device to validate the connection with the display.
HDMI Type C Mini-HDMI, used in portable devices.
HDMI Type D Micro-HDMI designed for use with compact portable equipment (cell phones)
DisplayPort Competitor of HDMI with an original top speed of 2.7 Gbps but can now go up to 20
Gbps.
MiniDP or mDP Smaller version of DisplayPort
Digital Visual Interface (DVI) designed to support both analog and digital display outputs (I). Introduced in the
90s. Can support only analog (A) or only digital (D) as well.
Video Graphics Array (VGA) Older display technology using a 15-pin standard analog video interface port.
