试题详情
- 多项选择题 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.
- B,D
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