LPIC-2 Advanced Networking Configuration Practice Question
A company's network has a single switch connecting all devices. The IT manager wants to isolate the development team's traffic from the rest of the network without buying new hardware. Which configuration should the administrator implement on the switch ports connected to the development team's computers?
⚠ Common exam trap
Many exam-takers confuse trunk mode (used for inter-switch links) with access mode (used for end devices), mistakenly thinking trunking provides isolation when it actually aggregates VLAN traffic.
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
✓
Set the ports to access mode and assign them to VLAN 10.
VLANs (Virtual Local Area Networks) logically segment a network at Layer 2, isolating traffic between groups without requiring additional hardware. Setting the switch ports to access mode and assigning them to VLAN 10 places the development team's computers into a separate broadcast domain, preventing their traffic from being visible to devices in other VLANs. This is the standard method for implementing port-based VLAN membership on a managed switch.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Set the ports to access mode and assign them to VLAN 10.
Why this is correct
VLANs isolate traffic at L2, and access ports assign the port to a specific VLAN, creating separate broadcast domains.
- ✗
Enable port security with a maximum MAC address count.
Why it's wrong here
Port security limits the number of MAC addresses on a port but does not segregate traffic.
- ✗
Configure the switch ports as part of a bridge group.
Why it's wrong here
A bridge group logically connects ports at L2; it does not isolate traffic.
- ✗
Set the ports to trunk mode.
Why it's wrong here
Trunk mode is used to carry multiple VLANs between switches, not to isolate a set of ports.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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