Which access list entry checks for an ACK within a packet header? 单选题

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  • A、access-list 49 permit ip any any eq 21 tcp-ack
  • B、access-list 49 permit tcp any any eq 21 tcp-ack
  • C、access-list 149 permit tcp any any eq 21 established
  • D、access-list 49 permit tcp any any eq 21 established
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  • C、access-list 149 permit tcp any any eq 21 established

swhh554301 1
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