Understand the main purpose of Spanning Tree Protocol (STP) for the CCNA 200-301 exam. Learn how STP prevents broadcast storms and network loops to maintain a stable, loop-free Layer 2 topology.
Table of Contents
Question
What is the main purpose of a STP (Spanning Tree Protocol)?
A. Enables VLAN trunking
B. Prevents broadcast storms and loops
C. Provides dynamic IP addressing
D. Encrypts data transmissions
E. Enhances routing efficiency
Answer
B. Prevents broadcast storms and loops
Explanation
STP prevents Layer 2 loops by blocking redundant switch links while still allowing redundancy for failover.
The main purpose of Spanning Tree Protocol (STP) is to prevent broadcast storms and loops in Layer 2 switched networks. STP achieves this by detecting redundant paths and blocking those that could form loops, allowing only one active path between any two network devices. This loop prevention is critical, as switching loops can cause broadcast storms, MAC table instability, and severe network congestion, ultimately disrupting network communication. STP also enables network redundancy by keeping backup paths available, which can be activated if the primary path fails, ensuring both stability and reliability in Ethernet networks.
Cisco Certified Network Associate CCNA 200-301 certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Cisco Certified Network Associate CCNA 200-301 exam and earn Cisco Certified Network Associate CCNA 200-301 certification.