问题:
ISL is being configured on a Company switch.
Which of the following choices are true regarding the ISL protocol? ()
A . It can be used between Cisco and non-Cisco switch devices.
B . It calculates a new CRC field on top of the existing CRC field.
C . It adds 4 bytes of protocol-specific information to the original Ethernet frame.
D . It adds 30 bytes of protocol-specific information to the original Ethernet frame.
ISL is being configured on a Company switch.
Which of the following choices are true regarding the ISL protocol? ()
● 参考解析
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