题目内容

In the modulation style. of PSK, if a kind of Modem's modulation rate is 3200baud and it's

A. 14.4kbps
B. 28.8kbps
C. 9600bps
D. 3200bps

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网络中进行数据交换必须遵守网络协议，一个网络协议主要由三个要素组成C语法、语义和 ()。

A. 时序
B. 软件
C. 原语
D. 数据

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Questions 59-60 are based on the following information
A hash table With hash function
H1(k)=k mod 13
Is shown below．
Collision is resolved using the hash function H2(k)=(k mod 11)+1
How many key comparisons occur in searching for key 35 in the given hash table？

A. 0
B. 1
C. 2
D. 3

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What is the contra positive of the relation represented in the exhibit shown below？

A. R= {＜1,2＞,＜ 1,3＞,＜1,4＞,＜1,5＞}
B. R= {＜ 1,1＞,＜2,2＞,＜3,3＞,＜4,4＞,＜5,5＞}
C. R= {＜2,1 ＞,＜4,1＞,＜2,2＞,＜1,3＞,＜3,2＞,＜1,4＞,＜4,4＞,＜5,4＞}
D. R= {＜1,2＞,＜3,1＞,＜1,4＞,＜2,2＞,＜2,3＞,＜4,1＞,＜4,4＞,＜4,5＞}

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有如下三个关系S(S#，SNAME，SEX，AGE)，C(C#，CNAMME)，SC(S#，C#，GRADE)。其中S#为学生号，SNAME为学生姓名，SEX为性别，AGE为年龄，C#为课程号，CNAME为课程名。要查询选修“数据库”课的全体学生姓名和成绩的SQL语句是SELECT SNAME，GRADE FROMS，C，SCWHERE子句。这里WHERE子句的内容是()。

A. S.S#＝SC.S#ANDC.C#＝SC.C# AND CNAME IN'数据库'
B. S.S#＝SC.S# AND CNAME='数据库'
C. S.S#＝SC.S#ANDC.C#=SC.C# AND CNAME'数据库'
D. S.S#＝SC.S#ANDC.C#=SC.C# AND CNAME='数据库'

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In the modulation style. of PSK, if a kind of Modem's modulation rate is 3200baud and it's

A. 14.4kbps B. 28.8kbps C. 9600bps D. 3200bps

网络中进行数据交换必须遵守网络协议，一个网络协议主要由三个要素组成C语法、语义和 ()。

Questions 59-60 are based on the following informationA hash table With hash functionH1(k)=k mod 13Is shown below．Collision is resolved using the hash function H2(k)=(k mod 11)+1How many key comparisons occur in searching for key 35 in the given hash table？

What is the contra positive of the relation represented in the exhibit shown below？

A. 14.4kbps
B. 28.8kbps
C. 9600bps
D. 3200bps

Questions 59-60 are based on the following information
A hash table With hash function
H1(k)=k mod 13
Is shown below．
Collision is resolved using the hash function H2(k)=(k mod 11)+1
How many key comparisons occur in searching for key 35 in the given hash table？