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CCNA Network Infrastructure and Connectivity Practice Question
Drag and drop the following steps into the correct order to replace a faulty fiber optic SFP module and verify the interface on a Cisco IOS-XE switch. Assume the fiber cable is already disconnected from the SFP module.
⚠ Common exam trap
The trap is that candidates may think the cable can be connected at any point, but the correct order requires the module to be inserted before the cable, and the cable must be connected before verification. Also, some may skip the error-checking step, but it is essential for complete verification.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Remove the old SFP module, insert the new SFP module, connect the fiber cable, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'. [CORRECT]
The correct order for replacing a faulty SFP module is: first remove the old module, then insert the new one, then connect the fiber cable, and finally verify the interface status and check for errors. Option A follows this sequence exactly. Options B, C, and D each have steps out of order: B connects the cable before removing the old module; C connects the cable before inserting the new module; D verifies the interface before connecting the cable, which would result in the interface being down during verification.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Remove the old SFP module, insert the new SFP module, connect the fiber cable, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'. [CORRECT]
Why this is correct
This sequence is correct: remove old SFP, insert new SFP, connect fiber, then verify with 'show interfaces' and check errors.
- ✗
Connect the fiber cable, remove the old SFP module, insert the new SFP module, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'.
Why it's wrong here
Incorrect: The fiber cable should not be connected before removing the old SFP module; the cable must be disconnected first for safety.
- ✗
Remove the old SFP module, connect the fiber cable, insert the new SFP module, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'.
Why it's wrong here
Incorrect: The fiber cable should be connected only after the new SFP module is inserted; connecting it before insertion is out of order.
- ✗
Remove the old SFP module, insert the new SFP module, verify interface status with 'show interfaces', connect the fiber cable, and check for errors with 'show interfaces counters errors'.
Why it's wrong here
Incorrect: Interface verification should occur after the cable is connected; verifying before connecting the cable will show the interface as down and any verification would be invalid.
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The 200-301 exam frequently reuses these exact scenarios with slightly different constraints.
✓Remove the old SFP module, insert the new SFP module, connect the fiber cable, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'. [CORRECT]Correct answer▾
Why this is correct
This sequence is correct: remove old SFP, insert new SFP, connect fiber, then verify with 'show interfaces' and check errors.
✗Connect the fiber cable, remove the old SFP module, insert the new SFP module, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'.Wrong answer — click to see why▾
Why this is wrong here
Connecting the cable before replacing the module is out of order; the cable should be disconnected during replacement.
Why candidates choose this
Candidates might think the cable connection is independent of module replacement, but the cable must be removed to access the module safely.
✗Remove the old SFP module, connect the fiber cable, insert the new SFP module, verify interface status with 'show interfaces', and check for errors with 'show interfaces counters errors'.Wrong answer — click to see why▾
Why this is wrong here
The cable should be connected only after the new module is securely inserted to avoid damaging the fiber connector or the module.
Why candidates choose this
Candidates might think the cable can be connected at any time, but the proper order is to insert the module first to ensure a stable connection.
✗Remove the old SFP module, insert the new SFP module, verify interface status with 'show interfaces', connect the fiber cable, and check for errors with 'show interfaces counters errors'.Wrong answer — click to see why▾
Why this is wrong here
Verifying interface status without a cable connected will show the interface as down, which is not a valid verification step.
Why candidates choose this
Candidates might think verification can be done before connecting the cable, but the interface must have a physical connection to be properly verified.
Analysis generated from the official 200-301blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Go deeper
Related to this question
Learn chapter
Switch Boot Process
Key term
Switch
A switch is a networking device that connects devices on a local area network and uses MAC addresses to forward data only to the intended recipient.
Key term
Interface
An interface is a point of connection or interaction between two systems, devices, or software components that allows them to exchange information or signals.
About these practice questions
Courseiva writes every 200-301 question from scratch — 1,389 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-301 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-301 exam.