Skip to content
PlayOwl

Computers & Digital Literacy · Grade 10

Networks, Protocols and Reliability

Networks lose, damage and delay data all the time, yet messages still arrive intact. Learners analyze redundant paths and single points of failure, trace how acknowledgments, timeouts and retransmission repair packet loss, detect errors with a parity bit and a toy checksum, and calculate transfer times from latency, throughput, bottlenecks and header overhead.

  • 4 lessons
  • About 110 minutes
  • Reliability and performance check: 10 questions
  • Ways to answer: fill in the blanks, choose an answer, trace code, match pairs, type a number and put in order
Try it now (no account) One of the five free starter courses Open in PlayOwl

What learners will discover

  • Analyze a network for fault tolerance: count routes between two points, identify single points of failure, and weigh the cost of redundancy.
  • Explain and trace how sequence numbers, acknowledgments, timeouts and retransmission give reliable delivery over links that lose packets.
  • Detect transmission errors with a parity bit and a toy checksum, and explain what each can and cannot detect.
  • Calculate transfer time from latency and throughput (including bottlenecks), and reason about scaling and the overhead of layered headers.

Lessons

  1. Redundancy and single points of failure 8 steps4 practiceabout 27 min
  2. Reliable delivery over an unreliable network 8 steps6 practiceabout 27 min
  3. Detecting damaged data 8 steps6 practiceabout 26 min
  4. Speed and scale: latency, throughput and overhead 9 steps6 practiceabout 30 min
  5. Reliability and performance check 10 questions at the end

Keep exploring

More 10th grade computer skills

Guide for grown-ups