【名词&注释】
十六进制数(hexadecimal number)
[判断题]PGP协议缺省的压缩算法是ZIP，压缩后数据由于冗余信息很少，更容易抵御来自分析类型的攻击。()
查看答案&解析
举一反三：
[单选题]The standard (IEEE 802)format for printing (72) in human-friendly form. is six groups of two hexadecimal digits，separated by hyphens(-) or colons(:)，in transmission order, e.g.01-23-45-67-89-ab，01:23:45:67:89:ab．This form. is also commonly used for EUI-64．
A. hard disk logical block address
B. IP address
C. mail address
D. MAC address
[单选题]
B． 3NF
C． BCNF
D． 4NF
A. 2NFB． 3NF
B. BCNF
C. 4NF
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