Question

during a network audit, it was discovered that the distribution layer switches in a companys three-tiered network hierarchy are nearing their end of life and need to be replaced. the current switches are layer 2 only, and the company has been experiencing issues with network bottlenecks and inefficient traffic management.

what type of switches should the company consider purchasing to replace the old distribution layer switches?

a basic unmanaged switches
b wireless access points
c layer 3 capable switches
d layer 2 only switches with higher throughput

Explanation:

Analyze the network hierarchy requirements

The scenario describes a three-tiered network hierarchy (Access, Distribution, and Core). The distribution layer is responsible for routing, filtering, and WAN access. It acts as the boundary between Layer 2 broadcast domains and the Layer 3 routed backbone.

Identify current issues and limitations

The company's current distribution switches are Layer 2 only. This limitation causes network bottlenecks and inefficient traffic management because Layer 2 switches cannot perform inter-VLAN routing locally. All routing must be sent up to a router (router-on-a-stick) or core layer, creating traffic congestion.

Evaluate the optimal solution

To resolve inter-VLAN routing bottlenecks and improve traffic management at the distribution layer, the company needs switches that can perform routing functions. Layer 3 capable switches (multilayer switches) route traffic at wire-speed using hardware-based routing, making them the ideal replacement.

Assess the given options

• A Basic unmanaged switches: Unsuitable for enterprise distribution layers.
• B Wireless access points: These are edge connectivity devices, not distribution switches.
• C Layer 3 capable switches: Correct, as they provide the necessary routing capabilities to solve Layer 2 bottlenecks.
• D Layer 2 only switches with higher throughput: Higher throughput alone does not solve the structural routing bottleneck.

Answer:

• A Basic unmanaged switches
• B Wireless access points
• C Layer 3 capable switches (Correct answer)
• D Layer 2 only switches with higher throughput