2026/2027 COMPTIA A+ 220-1101 CORE 1
STUDY FLASHCARDS QUESTIONS AND
CORRECT SOLUTIONS 100% PASS
Local Area Network (LAN)
A network that covers a relatively small area such as a building or group of buildings
(1.1 & 2.7)
Personal Area Network (PAN)
- Provides communication for devices owned by a single user that work over a short distance
- Bluetooth, IR, NFC, etc.
(1.1 & 2.7)
LCD (Liquid Crystal Display)
Lightweight & Inexpensive - Poor black levels due to Separate Backlight
(1.2)
TN (twisted nematic)
Fast response Times - Low cost - Low Power Use - Limited Viewing Angles
(1.2)
IPS (In Plane Switching)
Better Colors - Better Viewing Angles - More Expensive
,(1.2)
OLED (organic light-emitting diode)
Thinner & Brighter - No Need for Backlight
(1.2)
MDM (mobile device management)
- Manage company & user devices
- Centralized management system
- Ensures device security
(1.4)
MAM (mobile application management)
- Set policies & restrictions on apps
- Control Company software (Update, Remove, Etc.)
(1.4)
PRL (Preferred Roaming List)
- Allows phone to connect to the right tower
(1.4)
Port 20/21
FTP (File Transfer Protocol)
, - 20(TCP) for Data Transfers
- 21(TCP) to Control Data Transfers
(2.1)
Port 22
SSH (Secure Shell) - TCP
- Encrypted Communication
- Looks/Acts the same as Telnet
(2.1)
Port 23
Telnet (Telecommunications Network) - TCP
- Non-encrypted Communication
- Log into devices remotely
(2.1)
Port 25
SMTP (Simple Mail Transfer Protocol) - TCP
- Used to send mail from device to mail server
(2.1)
Port 53
DNS (Domain Name System) - UDP
- Converts names to IP addresses
STUDY FLASHCARDS QUESTIONS AND
CORRECT SOLUTIONS 100% PASS
Local Area Network (LAN)
A network that covers a relatively small area such as a building or group of buildings
(1.1 & 2.7)
Personal Area Network (PAN)
- Provides communication for devices owned by a single user that work over a short distance
- Bluetooth, IR, NFC, etc.
(1.1 & 2.7)
LCD (Liquid Crystal Display)
Lightweight & Inexpensive - Poor black levels due to Separate Backlight
(1.2)
TN (twisted nematic)
Fast response Times - Low cost - Low Power Use - Limited Viewing Angles
(1.2)
IPS (In Plane Switching)
Better Colors - Better Viewing Angles - More Expensive
,(1.2)
OLED (organic light-emitting diode)
Thinner & Brighter - No Need for Backlight
(1.2)
MDM (mobile device management)
- Manage company & user devices
- Centralized management system
- Ensures device security
(1.4)
MAM (mobile application management)
- Set policies & restrictions on apps
- Control Company software (Update, Remove, Etc.)
(1.4)
PRL (Preferred Roaming List)
- Allows phone to connect to the right tower
(1.4)
Port 20/21
FTP (File Transfer Protocol)
, - 20(TCP) for Data Transfers
- 21(TCP) to Control Data Transfers
(2.1)
Port 22
SSH (Secure Shell) - TCP
- Encrypted Communication
- Looks/Acts the same as Telnet
(2.1)
Port 23
Telnet (Telecommunications Network) - TCP
- Non-encrypted Communication
- Log into devices remotely
(2.1)
Port 25
SMTP (Simple Mail Transfer Protocol) - TCP
- Used to send mail from device to mail server
(2.1)
Port 53
DNS (Domain Name System) - UDP
- Converts names to IP addresses
