Continue your lesson
Follow traffic from the endpoint through each device, protocol, and service in the path.
Block 1 of 7Compare wireless paths by coverage and delay
Current · 7 min
Compare wireless paths by coverage and delay
Optional concept notes
IEEE 802.11
Defines wireless local-area networking over radio frequencies.
Cellular networking
Provides wide-area wireless connectivity through a mobile carrier's radio network.
Satellite networking
Provides wide-area connectivity through orbiting relays, often where terrestrial service is unavailable.
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Block 2 of 7Connect Ethernet standards to wired media
5 min
Connect Ethernet standards to wired media
Optional concept notes
IEEE 802.3
Defines Ethernet signaling and media standards for wired local-area networks.
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Block 3 of 7Choose a fiber type for distance and capacity
4 min
Choose a fiber type for distance and capacity
Optional concept notes
Single-mode fiber
Carries light long distances through a narrow core.
Multimode fiber
Carries multiple light paths over shorter fiber runs.
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Block 4 of 7Distinguish fixed copper media and assemblies
8 min
Distinguish fixed copper media and assemblies
Optional concept notes
Direct attach copper
Connects nearby network equipment with a fixed transceiver cable assembly.
Coaxial cable
Uses a shielded central conductor for radio-frequency signals.
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Block 5 of 7Match a transceiver to traffic, lanes, and media
5 min
Match a transceiver to traffic, lanes, and media
Optional concept notes
Ethernet transceiver
Provides a modular physical interface for Ethernet signaling and must match the link media and standard.
Fibre Channel transceiver
Provides a modular physical interface for Fibre Channel storage traffic rather than Ethernet traffic.
SFP family
Uses a small form-factor pluggable module whose supported speed and media depend on the exact module and host interface.
QSFP family
Uses four signaling lanes in a quad small form-factor pluggable module for greater aggregate throughput.
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Block 6 of 7Recognize fiber connector form factors
4 min
Recognize fiber connector form factors
Optional concept notes
SC connector
Uses a square push-pull fiber connector body that locks into its adapter.
LC connector
Uses a compact latched fiber connector suited to high-density patching.
ST connector
Uses a round bayonet-style fiber connector that locks with a twist.
MPO connector
Terminates multiple optical fibers in one push-on connector for high-density links.
Complete one provider lesson, then answer four related questions. That is enough for today; more practice is optional.
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Block 7 of 7Match copper connectors to their use cases
4 min
Match copper connectors to their use cases
Optional concept notes
RJ11
Provides a smaller modular copper connector commonly associated with telephone or DSL service.
RJ45
Provides the eight-position modular connector commonly used for twisted-pair Ethernet.
F-type connector
Provides a threaded connector commonly used with coaxial cable and cable-modem service.
BNC connector
Provides a bayonet-locking connector used with coaxial cable.
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Practice the reasoning here
Sketch a small network or packet path. Predict the expected state, introduce one fault, and identify the observation that isolates it.
- State the expected result before changing or testing anything.
- Name the observation, command, log, or report that would confirm it.
- Explain why the closest alternative does not fit the same requirement.
Check the whole objective
This unlocks objective 1.5 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.