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【多选题】
关于FTP，以下说法正确的是 (请选择2个答案)A.
FTP 是基于 UDP 的协议
B.
FTP 设计用于低速率的文件传输
C.
FTP 可以提供对 FTP 用户的登录名和密码的控制
D.
路由器可以支持 FTP Client 和 FTP Server 两种工作模式
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举一反三
【单选题】The maximum number of comparisons needed for the binary search of a 2000 element array is _______.
A.
9
B.
15
C.
11
D.
14
【简答题】Complete the table below by supplying the missing two forms for each number. Binary Hexadecimal Decimal 10101101 (1) (2) 1101110101 (3) (4) (5) 8EF (6) (7) 10 ...
【单选题】Design a logic circuit to produce a HIGH output only if the input, represented by a 4-bit binary number（A(MSB) ,B ,C and D(LSB)）, is greater than eleven or less than five（not including eleven and five...
A.
Y=A'B'+AB+A'C'D'
B.
Y=A'B+AB'+A'C'D'
C.
Y=A'B'+AB+A'C'D
D.
Y=A'B'+AB+A'CD'
【单选题】How can an unsigned binary number be converted to a negative value of equal magnitude (e.g. from plus 4 to minus 4 or from plus 100 to minus 100) in Binary Two's Complement.11
A.
You can invert all of the bits.
B.
Invert all the bits in the original bit string, then add one.
C.
Replace the leading 0 with a leading 1.
D.
For an eight bit number, you would subtract 128 10 to get a binary number in the range -128 to plus +127.
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