Deck · CompTIA Network+
Networking Concepts
OSI model, appliances, ports and protocols, IPv4 subnetting, cloud connectivity, and modern architectures (Domain 1, 23%).
182 cards · audited · SM-2 spaced repetition
Included with the full CompTIA Network+ program — 5 decks, 795 cards.
Sample cards
How many layers does the OSI model have?
Seven — Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Name the seven OSI layers in order from Layer 1 to Layer 7.
Physical, Data Link, Network, Transport, Session, Presentation, Application.
What is a common mnemonic for the OSI layers from Layer 1 up?
"Please Do Not Throw Sausage Pizza Away" — Physical, Data Link, Network, Transport, Session, Presentation, Application.
What is a PDU in networking?
A Protocol Data Unit — the named unit of data handled at each OSI layer (e.g., frame at Layer 2, packet at Layer 3).
What is the responsibility of OSI Layer 1 (Physical)?
Transmitting raw bits over the physical medium — cabling, connectors, signaling, and voltages.
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