Question

Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

A) Static default routes
B) Implementing VLANs to contain broadcasts
C) Redundant links between Layer 2 switches
D) Link-state dynamic routing that provides redundant routes
E) Removing single points of failure with multiple Layer 2 switches

Answer 1

The two network design features that require Spanning Tree Protocol (STP) to ensure correct network operation are redundant links between Layer 2 switches and the use of multiple Layer 2 switches to eliminate single points of failure. The correct option is c.

Step-by-step explanation:

Spanning Tree Protocol (STP) is an important network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The main purpose of STP is to prevent bridge loops and the broadcast radiation that can result from them. In network design, two key features that require the use of STP to ensure correct operation are:

• Redundant links between Layer 2 switches
• Multiple Layer 2 switches to remove single points of failure

Feature A (Static default routes) and feature D (Link-state dynamic routing that provides redundant routes) are unrelated to the Spanning Tree Protocol because they operate at Layer 3 of the OSI model and deal with IP routing, not Layer 2 switching. Similarly, feature B (Implementing VLANs to contain broadcasts) also does not directly relate to the need for STP, as VLANs do not necessarily introduce physical switch loops that STP is designed to prevent.