Which statement about enhanced zoning is true?
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A. B. C. D.D.
Enhanced zoning is a feature of Fibre Channel (FC) switches that provides additional functionality beyond basic zoning, which enables access control in a storage area network (SAN). Enhanced zoning provides the ability to create zones based on device attributes such as World Wide Names (WWNs), which allows for more granular control over which devices can communicate with each other.
Regarding the given answer options:
A. This statement is true. Enhanced zoning requires the zoning database to be activated, and changes made to the database require reactivation of the zone set to propagate the changes to all switches in the fabric.
B. This statement is also true. Enhanced zoning in interop mode 1 does not support fWWN-based membership, which means that devices cannot be added to a zone based on their FC-4 protocol.
C. This statement is also true. Once a fabric has been upgraded to enhanced zoning, it cannot be downgraded to basic zoning without wiping and restoring the switches in the fabric, which can be a time-consuming and disruptive process.
D. This statement is false. Enhanced zoning does not provide a vendor ID or vendor-specific type value to identify a member type. However, vendor-specific information can be included in the device alias, which is a user-friendly name assigned to a device to make it easier to identify in the SAN.
In summary, enhanced zoning is a powerful feature that provides greater control and flexibility in SAN management, but it requires careful planning and management to ensure that changes are propagated correctly and that the fabric remains stable and reliable.