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Science / Networking / Grade 7 / sn7b2

Compare Network Delay and Capacity - Practice 2

Keep delay and capacity comparisons separate.

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Watch the lesson | Practice 1

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Compare one property at a time using matching units and the same measurement method. Lower one-way latency means less delay for that measurement. Greater bandwidth means greater data-carrying capacity, not a promise of actual throughput or total download time. A path may have lower delay but less capacity.

Worked example

Path X has 20 ms one-way latency and 10 Mb/s capacity. Path Y has 50 ms and 40 Mb/s. X has lower delay; Y has greater capacity. The delay difference is 50 - 20 = 30 ms. The capacity ratio is 40 / 10 = 4.

Worked example: compare like measurements separately. EXAMPLE PATH X: One-way delay: 20 ms: Capacity: 10 Mb/s. EXAMPLE PATH Y: One-way delay: 50 ms: Capacity: 40 Mb/s.
Example values are different from the practice data.

Separate Measurements

Path A has 72 milliseconds (ms) of one-way latency and 60 megabits per second (Mb/s) of bandwidth. Path B has 24 ms and 20 Mb/s. Both latency values use the same one-way method. The capacities are stated limits, not measured download speeds. These fictional paths require no network access or changes to settings.

Question 1 Which path has lower one-way latency?
Question 2 Which path has greater bandwidth?
Question 3 What is the difference between the larger and smaller latency, in milliseconds?
Question 4 The greater bandwidth is how many times the smaller bandwidth?
Question 5 Which conclusion is supported by these measurements?