Suggested Answer:C🗳️
About Enabling Auto-learning - The state of the auto-learning configuration depends on the state of the port security feature: ג€¢ If the port security feature is not activated, auto-learning is disabled by default. ג€¢ If the port security feature is activated, auto-learning is enabled by default (unless you explicitly disabled this option). Reference: https://www.cisco.com/en/US/docs/storage/san_switches/mds9000/sw/rel_3_x/configuration/guides/fm_3_3_1/psec.html#:~:text=About%20Enabling% 20Auto%2Dlearning,-The%20state%20of&text=If%20the%20port%20security%20feature,by%20using%20the%20force%20option
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_x/config/security/cisco_mds9000_security_config_guide_8x/configuring_port_security.html#con_1003049
correct answer is C
Dynamic Method
By default, when you enable port security on an interface, you enable the dynamic learning method. With this method, the device secures MAC addresses as ingress traffic passes through the interface. If the address is not yet secured and the device has not reached any applicable maximum, it secures the address and allows the traffic.
The device stores dynamic secure MAC addresses in memory. A dynamic secure MAC address entry remains in the configuration of an interface until one of the following events occurs:
The device restarts
The interface restarts
The address reaches the age limit that you configured for the interface
You explicitly remove the address
You configure the interface to act as a Layer 3 interface
Port-security can be enabled individually for a VSAN:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/8_x/config/security/cisco_mds9000_security_config_guide_8x/configuring_port_security.html
switch(config)# port-security activate vsan 1
Activates the port security database for the specified VSAN, and automatically enables auto-learning.
Yes it is...
(...)
By default, the port security feature is not activated in any switch in the Cisco MDS 9000 Family.
By activating the port security feature, the following apply:
•Auto-learning is also automatically enabled, which means:
(...)
https://www.cisco.com/en/US/docs/storage/san_switches/mds9000/sw/rel_3_x/configuration/guides/fm_3_3_1/psec.html#wp1297119
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