CompTIA A+ 220-1101 Core 1 Study With complete
solu on RATED A+ 2025/2026
Local Area Network (LAN) - Correct Answers A network that covers a rela vely small area such
as a building or group of buildings
(1.1 & 2.7)
Personal Area Network (PAN) - Correct Answers - Provides communica on 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) - Correct Answers Lightweight & Inexpensive - Poor black levels
due to Separate Backlight
(1.2)
TN (twisted nema c) - Correct Answers Fast response Times - Low cost - Low Power Use -
Limited Viewing Angles
(1.2)
IPS (In Plane Switching) - Correct Answers Be2er Colors - Be2er Viewing Angles - More
Expensive
(1.2)
OLED (organic light-emi6ng diode) - Correct Answers Thinner & Brighter - No Need for
Backlight
(1.2)
,MDM (mobile device management) - Correct Answers - Manage company & user devices
- Centralized management system
- Ensures device security
(1.4)
MAM (mobile applica on management) - Correct Answers - Set policies & restric ons on apps
- Control Company so9ware (Update, Remove, Etc.)
(1.4)
PRL (Preferred Roaming List) - Correct Answers - Allows phone to connect to the right tower
(1.4)
Port 20/21 - Correct Answers FTP (File Transfer Protocol)
- 20(TCP) for Data Transfers
- 21(TCP) to Control Data Transfers
(2.1)
Port 22 - Correct Answers SSH (Secure Shell) - TCP
- Encrypted Communica on
- Looks/Acts the same as Telnet
(2.1)
Port 23 - Correct Answers Telnet (Telecommunica ons Network) - TCP
- Non-encrypted Communica on
- Log into devices remotely
(2.1)
,Port 25 - Correct Answers SMTP (Simple Mail Transfer Protocol) - TCP
- Used to send mail from device to mail server
(2.1)
Port 53 - Correct Answers DNS (Domain Name System) - UDP
- Converts names to IP addresses
- CRITICAL Resource
(2.1)
Port 67/68 - Correct Answers DHCP (Dynamic Host Configura on Protocol) - UDP
- Automated configura on of IP addresses
- IPs can be reserved for certain devices
- IP Range: 10.1.10.10 through 10.1.10.199
(2.1)
Port 80 - Correct Answers HTTP (Hypertext Transfer Protocol) - TCP
- Non-encrypted communica on in the browser
(2.1)
Port 110 - Correct Answers POP3 (Post Office Protocol 3) - TCP
- Receive emails from an email server
- Basic mail transfer func onality
(2.1)
Port 143 - Correct Answers IMAP (Internet Mail Access Protocol) - TCP
, - Includes management of email inboxes from mul ple clients. (Sync email across mul ple
devices)
(2.1)
Port 161/162 - Correct Answers SNMP (Simple Network Management Protocol) - UDP
- Port 161 queries devices for performance sta s cs.
- Port 162 monitors when metrics exceed a certain threshold.
(2.1)
Port 389 - Correct Answers LDAP (Lightweight Directory Access Protocol) - TCP
- Store & retrieve info in a network directory.
- Commonly used in Microso9 Ac ve Directory.
(2.1)
Port 443 - Correct Answers HTTPS (Hyper Text Transfer Protocol Secure) - TCP
- Encrypted Communica on in the Browser
(2.1)
Port 445 - Correct Answers Server Message Block (SMB) & Common Internet File System
(CIFS) - TCP
- Provides direct connec on & communica on over TCP without the NetBIOS Transport
(2.1)
Port 3389 - Correct Answers RDP (Remote Desktop Protocol) - TCP
- Share a desktop from a remote loca on
(2.1)
solu on RATED A+ 2025/2026
Local Area Network (LAN) - Correct Answers A network that covers a rela vely small area such
as a building or group of buildings
(1.1 & 2.7)
Personal Area Network (PAN) - Correct Answers - Provides communica on 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) - Correct Answers Lightweight & Inexpensive - Poor black levels
due to Separate Backlight
(1.2)
TN (twisted nema c) - Correct Answers Fast response Times - Low cost - Low Power Use -
Limited Viewing Angles
(1.2)
IPS (In Plane Switching) - Correct Answers Be2er Colors - Be2er Viewing Angles - More
Expensive
(1.2)
OLED (organic light-emi6ng diode) - Correct Answers Thinner & Brighter - No Need for
Backlight
(1.2)
,MDM (mobile device management) - Correct Answers - Manage company & user devices
- Centralized management system
- Ensures device security
(1.4)
MAM (mobile applica on management) - Correct Answers - Set policies & restric ons on apps
- Control Company so9ware (Update, Remove, Etc.)
(1.4)
PRL (Preferred Roaming List) - Correct Answers - Allows phone to connect to the right tower
(1.4)
Port 20/21 - Correct Answers FTP (File Transfer Protocol)
- 20(TCP) for Data Transfers
- 21(TCP) to Control Data Transfers
(2.1)
Port 22 - Correct Answers SSH (Secure Shell) - TCP
- Encrypted Communica on
- Looks/Acts the same as Telnet
(2.1)
Port 23 - Correct Answers Telnet (Telecommunica ons Network) - TCP
- Non-encrypted Communica on
- Log into devices remotely
(2.1)
,Port 25 - Correct Answers SMTP (Simple Mail Transfer Protocol) - TCP
- Used to send mail from device to mail server
(2.1)
Port 53 - Correct Answers DNS (Domain Name System) - UDP
- Converts names to IP addresses
- CRITICAL Resource
(2.1)
Port 67/68 - Correct Answers DHCP (Dynamic Host Configura on Protocol) - UDP
- Automated configura on of IP addresses
- IPs can be reserved for certain devices
- IP Range: 10.1.10.10 through 10.1.10.199
(2.1)
Port 80 - Correct Answers HTTP (Hypertext Transfer Protocol) - TCP
- Non-encrypted communica on in the browser
(2.1)
Port 110 - Correct Answers POP3 (Post Office Protocol 3) - TCP
- Receive emails from an email server
- Basic mail transfer func onality
(2.1)
Port 143 - Correct Answers IMAP (Internet Mail Access Protocol) - TCP
, - Includes management of email inboxes from mul ple clients. (Sync email across mul ple
devices)
(2.1)
Port 161/162 - Correct Answers SNMP (Simple Network Management Protocol) - UDP
- Port 161 queries devices for performance sta s cs.
- Port 162 monitors when metrics exceed a certain threshold.
(2.1)
Port 389 - Correct Answers LDAP (Lightweight Directory Access Protocol) - TCP
- Store & retrieve info in a network directory.
- Commonly used in Microso9 Ac ve Directory.
(2.1)
Port 443 - Correct Answers HTTPS (Hyper Text Transfer Protocol Secure) - TCP
- Encrypted Communica on in the Browser
(2.1)
Port 445 - Correct Answers Server Message Block (SMB) & Common Internet File System
(CIFS) - TCP
- Provides direct connec on & communica on over TCP without the NetBIOS Transport
(2.1)
Port 3389 - Correct Answers RDP (Remote Desktop Protocol) - TCP
- Share a desktop from a remote loca on
(2.1)
