Deck · CompTIA A+

Networking (Core 1)

Ports and protocols, network hardware, wireless standards, SOHO setup, and network services (Core 1 Domain 2, 23%).

92 cards · audited · SM-2 spaced repetition

Included with the full CompTIA A+ program — 9 decks, 800 cards.

Sample cards

Which TCP ports does FTP use, and what is each one for?

Ports 20 and 21 — port 21 carries control commands, while port 20 carries the actual file data in active mode.

Which port does SSH use?

TCP port 22 — SSH provides encrypted remote command-line access.

Which port does Telnet use?

TCP port 23 — Telnet provides remote command-line access but sends everything, including passwords, in plaintext.

Why should SSH be used instead of Telnet?

SSH encrypts the entire session, while Telnet transmits credentials and commands in plaintext that anyone on the network can capture.

Which port does SMTP use?

TCP port 25 — SMTP sends email between mail servers and from clients to servers.

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Master networking (core 1) — and the rest of CompTIA A+.

One program. 800 audited cards across 9 decks.