CCNA: Cisco Certified Network Associate — Question 161

What criteria is used first during the root port selection process?

Answer options

• A. local port ID
• B. lowest path cost to the toot bridge
• C. lowest neighbor's bridge ID
• D. lowest neighbor's port ID

Correct answer: B

Explanation

The correct answer is B, as the root port selection process begins by assessing the lowest path cost to the root bridge. The other options, while relevant in the broader context of spanning tree protocol, are not the primary criteria used for initial root port selection.