The Network StackThe layers a packet passes through, and what each adds.ComputingThe practical four-layer model, with the OSI numbers alongside.LayerCarriesExamplesApplication (7)MeaningHTTP, DNS, SMTPTransport (4)Ports, reliabilityTCP, UDPInternet (3)Addressing, routingIP, ICMPLink (2)Local deliveryEthernet, Wi-Fi, ARPTCP guarantees order and delivery; UDP guarantees neither and isfaster. Video calls choose UDP deliberately.The Network Stacklearnposters.com
The Network Stack — printable computing wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the The Network Stack poster

A 4-row table: Layer · Carries · Examples.

The practical four-layer model, with the OSI numbers alongside.

TCP guarantees order and delivery; UDP guarantees neither and is faster. Video calls choose UDP deliberately.

Questions about the The Network Stack poster

What’s on the The Network Stack poster?
A 4-row table: Layer · Carries · Examples. The practical four-layer model, with the OSI numbers alongside. Application (7) — Meaning — HTTP, DNS, SMTP; Transport (4) — Ports, reliability — TCP, UDP; Internet (3) — Addressing, routing — IP, ICMP; Link (2) — Local delivery — Ethernet, Wi-Fi, ARP. TCP guarantees order and delivery; UDP guarantees neither and is faster. Video calls choose UDP deliberately.
Who is the The Network Stack poster for?
The Network Stack belongs to the Computing section rather than to a school year, because computing is not something one grade owns. Anyone learning systems can pin it up — a beginner, a student mid-course, or someone revising years later.
When should you use the The Network Stack poster?
When something is broken, find the layer. Debugging across layers at once never converges. A wall chart earns its place by being glanceable from where the work is happening, so The Network Stack belongs on the wall where that computing work actually happens, within glancing distance, rather than filed away.
What other posters go with The Network Stack?
Caching, Concurrency & Parallelism and DNS sit alongside The Network Stack in the Computing section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.CachingConcurrency & ParallelismDNS
Is the The Network Stack poster free to download and print?
Yes. The Network Stack downloads as a free PDF with no account, no email and no watermark, like everything else in the Computing section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the The Network Stack poster print at?
The Network Stack is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of The Network Stack loses nothing.Printing guide

Related posters

Charts that sit alongside The Network Stack on the same wall.

Browse every Computing poster, or start from the full catalogue.