Stanford CS144 checkpoints: the network interface (ARP) and an IP router

Resolve next hops with ARP, build Ethernet frames and forward datagrams by longest-prefix match.

Not attemptedStanford CS144Access: free

The exercise happens on Stanford CS144. Canonical link: https://cs144.github.io/. Link check: link responded (5 Oct 2026). Opened from this app 0 times; opening is not counted as an attempt.

Supports: Networking roles and networking research. Open the handouts from the current offering; they build on the starter code of the earlier checkpoints.

Record an attempt

OutcomeAttempted, not solvedSolved with help (hints, editorial or discussion)Solved independentlyReviewed an earlier solution

Date

Minutes (optional)

Language

Hints used

Confidence afterwards

Main mistake

Learning objective this practices (optional)

Notes (approach, bug, what to remember)

Re-attempt on (optional)

A date is suggested from the outcome.

Attempt history

No attempts recorded yet.