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A.21端口為FTP服務(wù)B.23端口為TELNET服務(wù)C.110端口為SMTP服務(wù)D.80端口為HTTP服務(wù)
A.ISAKMP協(xié)議數(shù)據(jù)包B.SSL協(xié)議數(shù)據(jù)包C.ESP協(xié)議數(shù)據(jù)包D.AH協(xié)議數(shù)據(jù)包