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CompTIA Network+ N10-009 Review: OSI Model

Review osi model for this CompTIA Network+ N10-009 question with the key prompt clue, correct-answer reasoning, distractor checks, and sources to verify next.

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This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.

What this question is testing

Objective: OSI Model

Prompt focus: A technician encapsulates application data into segments, then packets, then frames as it moves down the protocol stack for transmission. At which OSI layer are IP addresses added to form packets?

Why the correct answer works

Layer 3, the network layer, where logical IP addresses are added to form packets

Layer 3, the network layer, adds logical IP addresses to form packets.

Why the tempting wrong answer fails

The tempting wrong answer usually loses because it skips the key condition, priority, or evidence in the prompt.

Plain-language takeaway

Use the rationale to connect the prompt clue, the correct choice, and the tested objective before retaking a similar item.

Simple analogy

Think of osi model like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.

How to review it before a retake

  • Underline the command word and name what the question is asking before rereading the choices.
  • Compare the correct answer against the closest distractor and write the exact detail that separates them.
  • Retest this objective with a fresh question without looking at the rationale first.

Sources to verify next