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300-410 Practice Question: The maximum number of source ports that can be…
What is the maximum number of source ports that can be monitored in a single SPAN session on a typical Cisco Catalyst switch?
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
✓
64
A single SPAN session can monitor up to 64 source ports (or source VLANs, but not both in the same session). This is a hardware limitation on most Catalyst switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
16
Why it's wrong here
16 is the limit for RSPAN source sessions on some platforms, but not for local SPAN.
- ✗
32
Why it's wrong here
32 is a common limit for the number of SPAN sessions, not source ports per session.
- ✓
64
Why this is correct
Up to 64 source ports can be included in a single SPAN session, though hardware-dependent.
- ✗
128
Why it's wrong here
128 exceeds the typical hardware limit for source ports per session.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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