Follow data from an application, through protocol layers and network devices, to its destination.
Beginner16 min read
Lesson 1Networking pathPractice
UNTIMED COACHING
Practice before the pressure
Use feedback to correct the model, not merely memorize an option position.
GUIDED PRACTICE
Practice the lesson questions
Answer normal lesson questions without a timer. Every answer includes an explanation, and incorrect answers can be tried again before continuing.
20 questions balanced across the lesson's key topics
At least four explanatory diagrams or tables
Retry freely, without a timer or score
CONCEPT MODELS
See the lesson as a system
Use these visual guides to connect the key ideas before answering the questions.
How data crosses a networkDevices and forwarding equipment move data toward the destination one stage at a time.An IPv4 address has two logical partsThe prefix identifies the network portion; the remaining bits identify a host in that network.A router chooses the next pathThe destination address is compared with known routes before the packet leaves through an interface.