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300-410 Practice Question: Which TWO statements about the limitations of…
Which TWO statements about the limitations of local SPAN are correct? (Choose TWO.)
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
✓
A local SPAN session can only monitor traffic on the same switch where the session is configured.
Local SPAN has several restrictions: it cannot send traffic across Layer 3 boundaries, it can only use interfaces on the same switch, and it has limitations on the number of sessions and the types of traffic that can be mirrored (e.g., control plane traffic is not included).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A local SPAN session can only monitor traffic on the same switch where the session is configured.
Why this is correct
Correct. Local SPAN is confined to a single switch; it cannot extend across switches.
- ✗
A local SPAN destination port can be a routed port or a switchport in trunk mode.
Why it's wrong here
Incorrect. The destination port must be a switchport in access mode; it cannot be a routed port or a trunk port.
- ✓
A local SPAN session can monitor both ingress and egress traffic simultaneously on the same source interface.
Why this is correct
Correct. You can specify 'both' as the direction for the source, capturing both incoming and outgoing frames.
- ✗
A local SPAN session can include a VLAN as a source, which monitors all traffic in that VLAN except the control plane traffic.
Why it's wrong here
Incorrect. VLAN-based SPAN monitors all traffic in the VLAN, including control plane traffic like STP BPDUs, but it does not monitor traffic that is switched in hardware only (e.g., some CEF-switched traffic may be missed).
- ✗
A local SPAN session can have multiple destination ports to send the mirrored traffic to multiple analyzers.
Why it's wrong here
Incorrect. A single local SPAN session can have only one destination port (or one destination interface). Multiple destinations require multiple sessions.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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