What are disadvantages of using Fibre Channel Arbitrated Loop (FC-AL) rather than Fibre Channel switched
fabric (FC-SW) topology? (Select two.)

A.
FC-AL topology is usually more expensive than FC-SW.

B.
Only one pair of ports can communicate at the same time.

C.
Multiple pairs of ports communicate at the same time.

D.
The failure of a port is isolated from the other ports.

E.
The bandwidth is shared among all active nodes.

Explanation:
A Fibre Channel Arbitrated Loop (FC-AL) is a high-speed Fibre Channel (FC) topology in which FC ports use
arbitration to establish a point-to-point circuit and prevent multiple ports from sending frames at the same time.
In a Fibre Channel topology, devices are connected in a one-way ring. When ports in a loop topology have
information to transmit, they must send out an arbitration signal to decide which port can use the channel. The
port in control of the channel then sends an “open” signal to the destination port and transmits its data. Since all
the ports in a loop are connected, every port will see and pass along the data — but ignore the data unless it is
addressed to that particular port.