Unit 6 · The Internet & Computing Systems · Lesson 6.14 · Review
Rebuild the Map & Review
Unit 6 is the bridge on the map: bits physically travel from Programs toward Big Data. Put it on the map, put the photo trip in order, and drill the vocabulary — this unit has more terms than any other.
Big Idea 4 — Computer Systems & NetworksReview — Unit 6
Before this lesson
No new reading. Skim Runestone 20.2.4 Summary. A term that feels fuzzy there is tonight’s study target.
Internet is on the map now, between Programs and Big Data. Programs make bits; the internet carries them; data piles up where they land. The map’s left side finally connects to its right.
2
The Point of Today
Can you say the unit in one breath?
“The internet is a network of networks held together by open, layered protocols; data travels as
addressed, numbered packets that routers pass hop by hop, redundancy makes it fault tolerant, bandwidth and
latency are different kinds of fast, and parallel speedup is capped by the part that can’t split.”
If one piece is fuzzy, you just found tonight’s study target.
3
The Unit 6 Map — four regions
Cover the right column and define each term before you peek.
Region
Terms
What it is (6.1–6.3)
computing device, computing system, computer network, path, protocol, abstraction layer, scalability, IP address, IPv4, IPv6, DNS
How data moves (6.4–6.6)
packet, packet metadata, TCP, IP, UDP, router, routing, hop
Two sentences to write on the map. Back to Unit 1: packets carry the same bits that
encode text (1.4) and images (1.5). Forward to Unit 7: everything that travels across other people’s
equipment can be intercepted — that’s next week’s whole premise.
4
The Photo Trip, In Order
Tap the steps in the order they happen. A wrong pick flashes red — that’s the step to review.
5
Vocabulary Rapid-Fire
Twenty terms. Read the definition, pick the term. Misses come back at the end.
6
Connections
Pulls together 6.1–6.13 — a wrong pick in the trip names the lesson to reopen.
Next in 6.15 — the Unit 6 test. Tomorrow’s page has what’s on it and a practice set.
Came from Unit 1 — packets carry the bits from 1.4 and 1.5.
Opens Unit 7 — what can be carried can be intercepted.