CompTIA DataX (CNX-001) — Question 29

A network engineer is designing a Layer 2 deployment for a company that occupies several floors in an office building. The engineer decides to make each floor its own VLAN but still allow for communication between all user VLANs. The engineer also wants to reduce the time necessary for STP convergence to occur when new switches come online. Which of the following should the engineer enable to accomplish this goal?

Answer options

• A. BPDU Guard
• B. Priority
• C. Tagging
• D. Portfast

Correct answer: D

Explanation

Enabling Portfast allows switches to bypass the listening and learning states of STP, leading to faster port activation when switches come online. This is particularly beneficial in environments with many VLANs, as it reduces convergence time. The other options, such as BPDU Guard and Priority, do not directly impact the convergence time in the same manner, and Tagging is related to VLAN identification rather than STP convergence.