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Tie every forwarding decision to interface state, Layer 2 state, addressing, routing, and policy.
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Block 1 of 1Compare NTP client · NTP server · NTP stratum · NTP source interface
Current · 20 min
Compare NTP client · NTP server · NTP stratum · NTP source interface
Continue your lessonReview the concept notes below, then try four related questions.
Concept notes
NTP client
Adjusts its clock using time learned from an upstream source.
NTP server
Provides synchronized time information to downstream clients.
NTP stratum
Indicates a time source's logical distance from a reference clock.
NTP source interface
Selects the local address used for outgoing time packets.
Review the concept notes, then answer four related questions. That is enough for today; more practice is optional.
No setup required
Practice the reasoning here
Write or inspect a small Cisco configuration, name the expected show-command evidence, and explain how a frame or packet crosses 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.
Your next milestone
Check the whole objective
This unlocks objective 4.2 for recall. The latest checkpoint needs 70% or higher; a lower result puts the lesson back near the front of your timeline.
One lesson at a time.Your block checks prepare you for this milestone. A score of 70% or higher advances the course; finishing a practice session completes your daily goal.