Question:
What is the effect of using the switchport port-security command?
- enables port security on an interface
- enables port security globally on the switch
- automatically shuts an interface down if applied to a trunk port
- detects the first MAC address in a frame that comes into a port and places that MAC address in the MAC address table
Explanation: Port security cannot be enabled globally. All active switch ports should be manually secured using the switchport port-security command, which allows the administrator to control the number of valid MAC addresses allowed to access the port. This command does not specify what action will be taken if a violation occurs, nor does it change the process of populating the MAC address table.
Exam with this question: CCNA 2 (v5.0.3 + v6.0) Chapter 5 Exam Answers
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