表达式[index for index，value in enumerate（[3，5，7，3，7]）ifvalue==max（[3，5，7，3，7]）]的值为（）。

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1.试题二（共15分）阅读下列说明，回答问题1至问题3，将解答填入答题纸的对应栏内。【说明】逻辑覆盖法是设计白盒测试用例的主要方法之一，它是通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。struct _ProtobufCIntRange{int start_value;unsigned orig_index;}；typedef struct _ProtobufCIntRange ProtobufCIntRange;int int_range_lookup (unsigned n_ranges, const ProtobufCIntRange *ranges, int value){unsigned start,n； ∥1start=0；n=n_ranges;while(n>1){ //2unsigned mid= start+ n/2;if(value< ranges[mid].start_value){ //3n=mid-start; //4}else if(value>=ranges[mid].start value+(int)(ranges[mid+1].orig_index-ranges[mid].orig_index){ //5unsigned new_start= mid+1; //6n=start+n-new_start,start = new_start;}else //7return (value - ranges[mid].start_value)+ ranges[mid],orig_index;}if(n>0){ //8unsigned start_orig_index= ranges[start].orig_index;unsigned range_size=ranges[start+1].orig_index - start_orig_index;if (ranges[start].start_value<=value&& value< (int)(ranges[start].start_value+ range_size》 //9, 10return (value - ranges[start].start_value)+start_orig_index; //11}retum -1, //12} //13【问题1】（5分）请给出满足100%DC（判定覆盖）所需的逻辑条件。【问题2】 (7分)请画出上述程序的控制流图，并计算其控制流图的环路复杂度V(G)。【问题3】（3分）请给出【问题2】中控制流图的线性无关路径。

2.要求为当前表建立一个候选索引，索引表达式为“职工号”，索引名zgh，则下列各语句中，正确的是( )。A．INDEX ON职工号TAG zgh UNIQUEB．INDEX TO职工号TAG zgh UNIQUEC．INDEX ON职工号TAG zgh CANDIDATED．INDEX TO职工号TAG zgh CANDIDATE

3.[说明] 逻辑覆盖法是设计白盒测试用例的主要方法之一，它是通过对程序逻辑结构的遍历实现程序的覆盖。针对以下由C语言编写的程序，按要求回答问题。 Struct_ProtobufCIntRange{ Int start_value; Unsigned orig_index; }; typedef struct_ProtobufCIntRange ProtobufCIntRange; in tint_range_lookup(unsigned n_ranges,const ProtobufCIntRange*ranges,int value) { unsigned start,n; //1 start=0; n=n_ranges; while (n>1) { //2 unsigned mid=start+n/2; if（value n=mid-start; //4 } else if (value>=ranges[mid].start_value+ (int)(ranges[mid+1].orig_index-ranges[mid].orig_index)) { //5 unsigned new_start=mid+1; //6 n=start+n-new_start; start=new_start; } else //7 return(value-ranges[mid].start_value)+ranges[mid].orig_index; } if(n>0){ //8 unsigned start_orig_index=ranges[start].orig_index; unsigned range_size=ranges[start+1].orig_index-start_orig_index; if (ranges[start].start_valuereturn(value-ranges[start].start_value)+start_orig_index; //11 } return -1; //12 } //13 5、[问题1] 请给出满足100%DC(判定覆盖)所需的逻辑条件。（6分）6、[问题2] 请画出上述程序的控制流图，并计算其控制流图的环路复杂度VG.。（6分） 7、[问题3] 请给出[问题2]中控制流图的线性无关路径。（4分）

4.Consider the following:Which statement best describes the meaning of the value for the key_len column?()A.It shows the total size of the index rowB.It shows how many columns in the index are examinedC.It shows the number of characters indexed in the keyD.It shows how many bytes will be used from each index row

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第1题：

int index = 1； String test = new String； String foo = test[index]； What is the result？（）
- A、 Foo has the value “”
- B、 Foo has the value null
- C、 An exception is thrown
- D、 The code will not compile
正确答案:B
第2题：

已知列表x=[1，3，2]，那么表达式[valu for index，value in enumerate（x）if index==2]的值为（）。

正确答案:[2]
第3题：

Given： 8.int index = 1： 9.Boolean [] test = new boolcan [3]； 10.boolcan foo = test [index]； What is the result（）？
- A、 foo has the value of 0.
- B、 foo has the value of null.
- C、 foo has the value of true.
- D、 foo has the value of false.
- E、 An-exception is thrown.
- F、 The code will not compile.
正确答案:D
第4题：

int index = 1； String [] test = new String[3]； String foo = test[index]； What is the result？（）
- A、 Foo has the value “”
- B、 Foo has the value null
- C、 An exception is thrown
- D、 The code will not compile
正确答案:B
第5题：

Which two statements are true about a bitmap index？（）
- A、It is recommended for the columns that have unique values.
- B、It can be converted to a B-tree index by using the ALTER INDEX command.
- C、It has a bitmap segment for each distinct value in the key column， containing a string of bits in which each bit represents the presence or absence of a key column value.
- D、Updating the key column locks the whole bitmap segment that contains the bit for the key value to be updated.
正确答案:C,D
第6题：

Which two statements are true regarding B-tree index（）
- A、The leaf blocks in the index are doubly linked.
- B、The leaf node stores a bitmap for each key value.
- C、The rows with NULL value in key columns also have entries in the index.
- D、The deletion of a row from the table causes a logical deletion in index leaf block and the space becomes available for the new leaf entry.
正确答案:A,D
第7题：

单选题
int index = 1； int foo = new int ； int bar = foo [index]； int baz = bar + index； What is the result？（）
A
Baz has the value of 0
B
Baz has the value of 1
C
Baz has the value of 2
D
An exception is thrown.
E
The code will not compile.

正确答案： A
解析：暂无解析
第8题：

单选题
int index = 1； boolean test = new Boolean； boolean foo= test [index]； What is the result？（）
A
Foo has the value of 0.
B
Foo has the value of null.
C
Foo has the value of true.
D
Foo has the value of false.
E
An exception is thrown.
F
The code will not compile.

正确答案： F
解析：暂无解析
第9题：

多选题
Which two statements are true regarding B-tree index（）
A
The leaf blocks in the index are doubly linked.
B
The leaf node stores a bitmap for each key value.
C
The rows with NULL value in key columns also have entries in the index.
D
The deletion of a row from the table causes a logical deletion in index leaf block and the space becomes available for the new leaf entry.

正确答案： D,B
解析：暂无解析
第10题：

多选题
Which two statements are true regarding B-tree indexs（）
A
The leaf blocks in the index are doubly linked.
B
The leaf node stores a bitmap for each key value.
C
The rows with NULL value in key columns also have entries in the index.
D
The deletion of a row from the table causes a logical deletion in index leaf block and the space becomesavailable for the new leaf entry

正确答案： C,D
解析：暂无解析
第11题：

单选题
int index = 1； String [] test = new String[3]； String foo = test[index]； What is the result？（）
A
Foo has the value “”
B
Foo has the value null
C
An exception is thrown
D
The code will not compile

正确答案： B
解析：暂无解析
第12题：

填空题
已知x=[3，2，3，3，4]，那么表达式[index for index，value in enumerate（x）if value==3]的值为（）。

正确答案： [0, 2, 3]
解析：暂无解析
第13题：

已知x=[3，2，3，3，4]，那么表达式[index for index，value in enumerate（x）if value==3]的值为（）。

正确答案:[0, 2, 3]
第14题：

int index = 1； boolean test = new Boolean； boolean foo= test [index]； What is the result？（）
- A、 Foo has the value of 0.
- B、 Foo has the value of null.
- C、 Foo has the value of true.
- D、 Foo has the value of false.
- E、 An exception is thrown.
- F、 The code will not compile.
正确答案:D
第15题：

int index = 1； int foo = new int ； int bar = foo [index]； int baz = bar + index； What is the result？（）
- A、 Baz has the value of 0
- B、 Baz has the value of 1
- C、 Baz has the value of 2
- D、 An exception is thrown.
- E、 The code will not compile.
正确答案:B
第16题：

Which two statements are true regarding B-tree indexs（）
- A、The leaf blocks in the index are doubly linked.
- B、The leaf node stores a bitmap for each key value.
- C、The rows with NULL value in key columns also have entries in the index.
- D、The deletion of a row from the table causes a logical deletion in index leaf block and the space becomesavailable for the new leaf entry
正确答案:A,D
第17题：

Which statement describes the effect on an index， when the indexed column for the rows is updatedin the base table（）
- A、An update in a leaf row takes place.
- B、The index becomes invalid after the update.
- C、The leaf block containing the row to be updated is marked as invalid.
- D、A row in the leaf block of the index for the key value is logically deleted and a new leaf row is inserted
正确答案:D
第18题：

单选题
int index = 1； boolean[] test = new Boolean[3]； boolean foo= test [index]； What is the result？（）
A
Foo has the value of 0.
B
Foo has the value of null.
C
Foo has the value of true.
D
Foo has the value of false.
E
An exception is thrown.
F
The code will not compile.

正确答案： A
解析：暂无解析
第19题：

单选题
int index = 1； int [] foo = new int [3]； int bar = foo [index]； int baz = bar + index； What is the result？（）
A
Baz has the value of 0
B
Baz has the value of 1
C
Baz has the value of 2
D
An exception is thrown.
E
The code will not compile.

正确答案： C
解析：暂无解析
第20题：

多选题
Which two statements are true about a bitmap index？（）
A
It is recommended for the columns that have unique values.
B
It can be converted to a B-tree index by using the ALTER INDEX command.
C
It has a bitmap segment for each distinct value in the key column， containing a string of bits in which each bit represents the presence or absence of a key column value.
D
Updating the key column locks the whole bitmap segment that contains the bit for the key value to be updated.

正确答案： D,A
解析：暂无解析
第21题：

单选题
Given： 8.int index = 1： 9.Boolean [] test = new boolcan [3]； 10.boolcan foo = test [index]； What is the result（）？
A
foo has the value of 0.
B
foo has the value of null.
C
foo has the value of true.
D
foo has the value of false.
E
An-exception is thrown.
F
The code will not compile.

正确答案： F
解析：暂无解析
第22题：

单选题
int index = 1； String test = new String； String foo = test[index]； What is the result？（）
A
Foo has the value “”
B
Foo has the value null
C
An exception is thrown
D
The code will not compile

正确答案： A
解析：暂无解析
第23题：

填空题
表达式[index for index，value in enumerate（[3，5，7，3，7]）ifvalue==max（[3，5，7，3，7]）]的值为（）。

正确答案： [2, 4]
解析：暂无解析

表达式[index for index，value in enumerate（[3，5，7，3，7]）ifvalue==max（[3，5，7，3，7]）]的值为（）。

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