What is the maximum amount of power a switch is allowed to provide per port according to the IEEE 802.3af standard?

The Windows 8.1 default password policy requires that a password contains at least one number to meet the password complexity requirements

Indicate whether the statement is true or false

Assume that, in addition to the operations read(x) and write(x), a database has the operation copy(x,y), which (atomically) copies the value stored in record x into record y. Design a conflict table for these operations for use in an immediate-update pessimistic concurrency control.

What will be an ideal response?