Comptia A+ Core 1 -- Section 2

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Last updated 6:56 PM on 5/26/26
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18 Terms

1
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FTP (File Transfer Protocol)

  • Used to share files w/ users in a LAN or WAN

  • Unencrypted

  • port 20 / 21 (TCP)

2
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SFTP (Secure File Transfer Protocol)

  • Secure implentation of FTP

  • Encrypted

  • port 22 (TCP)

3
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SSH (Secure Shell)

  • Remote command line access to interface w/ a server

  • Encrypted

  • port 22 (TCP)

4
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Telnet

  • Remote command line access to interface w/ a server

  • Unencrypted

  • port 23 (TCP)

5
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SMTP (Simple Mail Transfer Protocol)

  • Outgoing mail to server

  • port 25 (TCP)

6
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DNS (Domain Name System)

  • Name to IP resolution

  • port 53 (TCP / UDP)

7
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DHCP (Dynamic Host Configuration Protocol)

  • Provides IP configuration via broadcast

  • port 68 / 68 (UDP)

8
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HTTP (HyperText Transfer Protocol)

  • Transmit web pages

  • Unencrypted

  • port 80 (TCP)

9
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POP3 (Post Office Protocol 3)

  • Removes incoming mail from server

  • port 110 (TCP)

10
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NetBIOS (Network Basic Input / Output System)

  • Provides network communication features in a Windows network

  • port 137 / 139 (TCP / UDP)

11
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IMAP (Internet Mail Access Protocol)

  • Synchronizes mail w/ server

  • port 143 (TCP)

12
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SNMP (Simple Network Management Protocol)

  • Used to query and monitor host in LAN

  • encrypted (version 3)

  • port 161 / 162 (UDP)

13
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LDAP (Lightweight Directory Access Protocol)

  • Used in domain based networks to facilitate system and user management

  • port 389 (TCP / UDP)

14
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HTTPS (HypterText Transfer Protocol Secure)

  • Transmit web pages

  • Encrypted using SSL or TLS

  • port 443 (TCP)

15
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SMB (Server Message Block)

  • Provides file sharing, network browsing, and printing services.

    • Most common in Windows enviornments

  • CIFS (Common Internet File System)

    • Open source implementation with built in support for Linux & Mac

  • port 445 (TCP)

16
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RDP (Remote Desktop Protocol)

  • Securely access Windows desktop remotely

  • port 3389 (TCP)

17
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Long-Range Fixed Wireless

  • Used to connect wireless devices over miles

  • Unlicensed & Licensed (← FCC)

18
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UTM (Unified Threat Managment)

  • A combination of antimalware, firewall, and intrusion detection systems (IDS).