Flashcards and sets
Flashcards that come back when you're about to forget
Short cards, each with a source
Each card holds one fact: a port, an acronym, a command, or the difference between two similar terms. The back gives the answer, an optional line on why it works that way, and the source.
Scheduling uses FSRS, an open-source spaced-repetition algorithm. After each card you rate it Again, Hard, Good, or Easy, and each button shows when you'll see the card next.
Built-in decks include one per objective, your weakest 50 cards, and a cram mode for the last week before your exam date.
DHCP (server / client ports)
UDP 67 (server), UDP 68 (client)
Clients send to the server on 67; servers reply to clients on 68.
Save to a set
- Ports & protocols24 cards
- Things I keep missing12 cards
- Week 6 review31 cards
New set
Done
Save any question to your own sets
Save from anywhere you study
Tap Save on a drill question or its explanation and pick one or more sets, like “Ports & protocols” or “Week 6 review”. A question can sit in several sets at once.
One schedule per card
A card has a single review schedule no matter how many sets hold it, so reviewing it in one set counts everywhere.
Concept cards or the full question
Most questions come with a short concept card written for recall. You can also study the full question with its explanation on the back.
Nothing disappears quietly
If a question is being rechecked or retired, it stays in your set with a note and is skipped in study until it clears. You decide whether to remove it.
Offline first, synced later
Cards, sets, and your review history live on your device, so studying works with no connection. When you're back online, changes sync as individual adds and removes, which means editing a set on two devices never overwrites one with the other.
Sets can mix exams, and each card shows its exam code and objective.