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CCNP Practice Question: Consider the following SPAN configuration on a…

Consider the following SPAN configuration on a Cisco IOS-XE switch:

monitor session 2 source interface GigabitEthernet1/0/3 rx monitor session 2 destination interface GigabitEthernet1/0/4

What is the effect of this configuration?

⚠ Common exam trap

Candidates often assume SPAN always copies both ingress and egress traffic by default, but the explicit `rx` keyword changes the behavior to only ingress, and Cisco tests whether you notice that keyword in the configuration.

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

✓

Only traffic received on GigabitEthernet1/0/3 is copied to GigabitEthernet1/0/4.

The configuration explicitly specifies the `rx` keyword for the source interface, which limits SPAN to copying only received (ingress) traffic on GigabitEthernet1/0/3 to the destination interface GigabitEthernet1/0/4. Without the `rx` or `tx` keyword, the default behavior would copy both directions, but here the explicit `rx` overrides that default.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Only traffic received on GigabitEthernet1/0/3 is copied to GigabitEthernet1/0/4.
Why this is correct
The 'rx' keyword specifies ingress traffic only.
✗
Both ingress and egress traffic on GigabitEthernet1/0/3 is copied to GigabitEthernet1/0/4.
Why it's wrong here
The 'rx' keyword limits copying to ingress traffic only.
✗
Traffic on GigabitEthernet1/0/4 is mirrored to GigabitEthernet1/0/3.
Why it's wrong here
The direction is from source to destination, not reverse.
✗
The configuration is invalid because the destination interface must be in trunk mode.
Why it's wrong here
A SPAN destination port can be an access port; trunk mode is not required.

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Courseiva writes every 350-401 question from scratch — 1,175 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 →

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Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

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