CompTIA A+ 220-1101 Core 1 Study Guide 100% Verified.

©JASONMcCONNELL 2025 ALL RIGHTS RESERVED




CompTIA A+ 220-1101 Core 1 Study Guide
100% Verified.




Local Area Network (LAN) - ANS A network that covers a relatively small area such as a
building or group of buildings
(1.1 & 2.7)



Personal Area Network (PAN) - ANS - 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) - ANS Lightweight & Inexpensive - Poor black levels due to
Separate Backlight
(1.2)



TN (twisted nematic) - ANS Fast response Times - Low cost - Low Power Use - Limited
Viewing Angles
(1.2)



IPS (In Plane Switching) - ANS Better Colors - Better Viewing Angles - More Expensive
(1.2)



OLED (organic light-emitting diode) - ANS Thinner & Brighter - No Need for Backlight
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(1.2)



MDM (mobile device management) - ANS - Manage company & user devices
- Centralized management system
- Ensures device security
(1.4)



MAM (mobile application management) - ANS - Set policies & restrictions on apps
- Control Company software (Update, Remove, Etc.)
(1.4)



PRL (Preferred Roaming List) - ANS - Allows phone to connect to the right tower
(1.4)



Port 20/21 - ANS FTP (File Transfer Protocol)
- 20(TCP) for Data Transfers
- 21(TCP) to Control Data Transfers
(2.1)



Port 22 - ANS SSH (Secure Shell) - TCP
- Encrypted Communication
- Looks/Acts the same as Telnet
(2.1)



Port 23 - ANS Telnet (Telecommunications Network) - TCP
- Non-encrypted Communication
- Log into devices remotely

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(2.1)



Port 25 - ANS SMTP (Simple Mail Transfer Protocol) - TCP
- Used to send mail from device to mail server
(2.1)



Port 53 - ANS DNS (Domain Name System) - UDP
- Converts names to IP addresses
- CRITICAL Resource
(2.1)



Port 67/68 - ANS DHCP (Dynamic Host Configuration Protocol) - UDP
- Automated configuration 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 - ANS HTTP (Hypertext Transfer Protocol) - TCP
- Non-encrypted communication in the browser
(2.1)



Port 110 - ANS POP3 (Post Office Protocol 3) - TCP
- Receive emails from an email server
- Basic mail transfer functionality
(2.1)



Port 143 - ANS IMAP (Internet Mail Access Protocol) - TCP

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- Includes management of email inboxes from multiple clients. (Sync email across multiple
devices)
(2.1)



Port 161/162 - ANS SNMP (Simple Network Management Protocol) - UDP
- Port 161 queries devices for performance statistics.
- Port 162 monitors when metrics exceed a certain threshold.
(2.1)



Port 389 - ANS LDAP (Lightweight Directory Access Protocol) - TCP
- Store & retrieve info in a network directory.
- Commonly used in Microsoft Active Directory.
(2.1)



Port 443 - ANS HTTPS (Hyper Text Transfer Protocol Secure) - TCP
- Encrypted Communication in the Browser
(2.1)



Port 445 - ANS Server Message Block (SMB) & Common Internet File System (CIFS) - TCP
- Provides direct connection & communication over TCP without the NetBIOS Transport
(2.1)



Port 3389 - ANS RDP (Remote Desktop Protocol) - TCP
- Share a desktop from a remote location
(2.1)



Access Point - ANS Extends wired network & converts it into a wireless network.

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