多项选择题

Under which two circumstances should Spanning Tree Protocol be implemented?（）

A. to ensure a loop-free topology
B. to protect against user-side loops
C. when a VLAN spans access layer switches
D. for the most deterministic and highly available network topology
E. because of the risk of lost connectivity without Spanning Tree Protocol

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单项选择题

Refer to the exhibit. Which recommended practice is applicable?（）

A. If no core layer is deployed, the design will be easier to scale.
B. If no core layer is deployed, there will be fewer cabling requirements.
C. If no core layer is deployed, the distribution switches should not be fully meshed.
D. A dedicated campus core layer is not needed for connecting fewer than five buildings.
E. A dedicated campus core layer should be deployed for connecting three or more buildings.

单项选择题

Which of these recommendations is most appropriate for the Cisco Campus Architecture?（）

A. Utilize Layer 3 switching.
B. Utilize software accelerated services.
C. Aggregate end users and support a feature-rich environment.
D. Perform packet manipulation and filtering at the core layer.
E. Use redundant point-to-point Layer 2 interconnections when there is a link or node failure.