COMPTIA 1101 CARDS
ASSESSMENT PRACTICE
QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
What does SATA stand for? - ANS-Serial advanced technology connection
What does PCI stand for? - ANS-Peripheral component interconnect, legacy
Type of communication of PCI? - ANS-32bit and 64bit parallel communication
Voltage of PCI? - ANS-3.3V and 5V
What is the NFC range? - ANS-4cm
What does LCD stand for and how does it work? - ANS-Liquid crystal display, light
shines through liquid filters
What are the types of LCD and what do they stand for? - ANS-TN = twisted nemantic
IPS = in plane switching
VA = vertical alignment
Difference between different LCD types? - ANS-TN = better response time, bad wide
angles, low power
,IPS = better colors, more expensive, good angles
VA = best contrast, bad angles
Different types of LCD backlights? - ANS-CCFL = cold cathode fluorescent lamp
LED
What is special about CCFL? - ANS-Uses AC power when the computer requires DC, so
need an inverter
How many pins is USB-C? What makes it special? - ANS-24pins, can be used to transmit
other signals (HDMI, DisplayPort)
What was used before USB connectivity and with what kind of signal? How many pins?
- ANS-DB-9 cable with RS232 signal, 9pin
What kind of stylus' are there? - ANS-Capacitive stylus = touch pen
Active stylus = apple pencil, can communicate independently of the screen
What is the older type of headset connection? With what type of signal? - ANS-3.5mm
TRRS (tip ring ring sleeve) with an analog signal
What were the 2G networks? What did they stand for? - ANS-GSM = global system for
mobile communication
CDMA = code division multiple access
What companies used GSM and how did it work? - ANS-AT+T and T-Mobile, has
multiplexing
What does multiplexing mean? - ANS-Multiple data signals use the same channel
without interference
,What companies used CDMA? How did it work? - ANS-Verizon and Sprint, each person
used a different code
What was the purpose of 4G? What did it stand for? - ANS-To combine GSM and CDMA,
LTE = long term evolution
What does EDGE stand for? - ANS-Enhanced data rates for GSM evolution
What is PRL? How does it update? - ANS-Preferred roaming list, so your cell phone can
connect to the right tower, updates OTA (over the air)
How does GPS work? - ANS-30 satellites in the air, your device needs to see 4 for
accurate location
What does MDM stand for? And do? - ANS-Mobile device management, companies can
manage user devices through one console
What is meant by a partition? - ANS-Keeping company data and private data separate
What are the two types of IP payloads? What do they stand for? - ANS-TCP =
transmission control protocol
UDP = user datagram protocol
What does in the clear mean? - ANS-Not encrypted
Why not just have the IP payload? - ANS-TCP and UDP allow for multiplexing with
different applications and ports
How does TCP work? - ANS-Requires formal setup/teardown process to establish
protocol, called a reliable system because will make sure data reaches server, also has
flow control to make sure one side is not getting data too quickly
Examples of TCP? - ANS-HTTPS = hypertext transfer protocol secure
, SSH = secure shell
How does UDP work? - ANS-No formal setup process, no confirmation of data sent, for
real time communication
Examples of UDP? - ANS-DHCP = dynamic host config protocol
TFTP = trivial file transfer protocol
What are the different kinds of ports? - ANS-Non-ephemeral (permanent port) = same
port for the same service
Ephemeral = client side port that changes
What is a key fact about ports? About TCP and UDP using ports? - ANS-For
communication, not security
TCP and UDP can use the same port numbers at the same time
FTP? - ANS-File transfer protocol tcp/20 tcp/21 file transfer between systems
Telnet? - ANS-tcp/23 in the clear remote command console access
SSH? - ANS-Secure shell tcp/22 encrypted communication for command console
SMTP? - ANS-Simple mail transfer protocol tcp/25 only sending mail not receiving
DNS? - ANS-Domain name system udp/53 converts web addresses to IPs and vice versa
DHCP? - ANS-Dynamic host configuration protocol udp/67/68 assigns IP address
settings to local machines
HTTP/HTTPS? - ANS-Hypertext transfer protocol (secured) tcp/80 tcp/443
ASSESSMENT PRACTICE
QUESTIONS AND
CORRECT ANSWERS
GRADED A+ 2025-2026
What does SATA stand for? - ANS-Serial advanced technology connection
What does PCI stand for? - ANS-Peripheral component interconnect, legacy
Type of communication of PCI? - ANS-32bit and 64bit parallel communication
Voltage of PCI? - ANS-3.3V and 5V
What is the NFC range? - ANS-4cm
What does LCD stand for and how does it work? - ANS-Liquid crystal display, light
shines through liquid filters
What are the types of LCD and what do they stand for? - ANS-TN = twisted nemantic
IPS = in plane switching
VA = vertical alignment
Difference between different LCD types? - ANS-TN = better response time, bad wide
angles, low power
,IPS = better colors, more expensive, good angles
VA = best contrast, bad angles
Different types of LCD backlights? - ANS-CCFL = cold cathode fluorescent lamp
LED
What is special about CCFL? - ANS-Uses AC power when the computer requires DC, so
need an inverter
How many pins is USB-C? What makes it special? - ANS-24pins, can be used to transmit
other signals (HDMI, DisplayPort)
What was used before USB connectivity and with what kind of signal? How many pins?
- ANS-DB-9 cable with RS232 signal, 9pin
What kind of stylus' are there? - ANS-Capacitive stylus = touch pen
Active stylus = apple pencil, can communicate independently of the screen
What is the older type of headset connection? With what type of signal? - ANS-3.5mm
TRRS (tip ring ring sleeve) with an analog signal
What were the 2G networks? What did they stand for? - ANS-GSM = global system for
mobile communication
CDMA = code division multiple access
What companies used GSM and how did it work? - ANS-AT+T and T-Mobile, has
multiplexing
What does multiplexing mean? - ANS-Multiple data signals use the same channel
without interference
,What companies used CDMA? How did it work? - ANS-Verizon and Sprint, each person
used a different code
What was the purpose of 4G? What did it stand for? - ANS-To combine GSM and CDMA,
LTE = long term evolution
What does EDGE stand for? - ANS-Enhanced data rates for GSM evolution
What is PRL? How does it update? - ANS-Preferred roaming list, so your cell phone can
connect to the right tower, updates OTA (over the air)
How does GPS work? - ANS-30 satellites in the air, your device needs to see 4 for
accurate location
What does MDM stand for? And do? - ANS-Mobile device management, companies can
manage user devices through one console
What is meant by a partition? - ANS-Keeping company data and private data separate
What are the two types of IP payloads? What do they stand for? - ANS-TCP =
transmission control protocol
UDP = user datagram protocol
What does in the clear mean? - ANS-Not encrypted
Why not just have the IP payload? - ANS-TCP and UDP allow for multiplexing with
different applications and ports
How does TCP work? - ANS-Requires formal setup/teardown process to establish
protocol, called a reliable system because will make sure data reaches server, also has
flow control to make sure one side is not getting data too quickly
Examples of TCP? - ANS-HTTPS = hypertext transfer protocol secure
, SSH = secure shell
How does UDP work? - ANS-No formal setup process, no confirmation of data sent, for
real time communication
Examples of UDP? - ANS-DHCP = dynamic host config protocol
TFTP = trivial file transfer protocol
What are the different kinds of ports? - ANS-Non-ephemeral (permanent port) = same
port for the same service
Ephemeral = client side port that changes
What is a key fact about ports? About TCP and UDP using ports? - ANS-For
communication, not security
TCP and UDP can use the same port numbers at the same time
FTP? - ANS-File transfer protocol tcp/20 tcp/21 file transfer between systems
Telnet? - ANS-tcp/23 in the clear remote command console access
SSH? - ANS-Secure shell tcp/22 encrypted communication for command console
SMTP? - ANS-Simple mail transfer protocol tcp/25 only sending mail not receiving
DNS? - ANS-Domain name system udp/53 converts web addresses to IPs and vice versa
DHCP? - ANS-Dynamic host configuration protocol udp/67/68 assigns IP address
settings to local machines
HTTP/HTTPS? - ANS-Hypertext transfer protocol (secured) tcp/80 tcp/443
