单选题What produces a compiler error？（）Aclass A { public A（int x） {} }Bclass A {} class B extends A { B（） {} }Cclass A { A（） {} } class B { public B（） {} }Dclass Z { public Z（int） {} } class A extends Z {}

题目
单选题
What produces a compiler error？（）
A

 class A { public A（int x） {} }

B

 class A {} class B extends A { B（） {} }

C

 class A { A（） {} } class B { public B（） {} }

D

 class Z { public Z（int） {} } class A extends Z {}

相似考题

1.What are the basic principles of positive error correction?

2.The error messages given by a C compiler show the message text，the most common(68) of the error，and a suggestion for fixing the error．A．consequenceB．causeC．informationD．result

3.What is the outcome of this block of code?()A. It creates a task and workload, and executes the task.B. It creates a task and workload but does not execute the task.C. It produces an error because a template has not been created.D. It produces an error because the SQL Tuning Set has not been created.

4.●The error messages given by a C compiler show the message text,the most common cause of the error,and a suggestion for (73) the error.(73) A．upfsyingB．fixingC．changingD．Editing

更多“What produces a compiler error？（）  ”相关问题

  • 第1题：

    Evaluate the following SQL statement used to create the PRODUCTS table:Which statement is true regarding this command?()

    A. It executes successfully but partition pruning cannot happen for this partition key.

    B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.

    C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.

    D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.


    参考答案：D

  • 第2题：

    Evaluate the SQL statement:What is the result of the statement?()

    A. The statement produces an error at line 1.

    B. The statement produces an error at line 3.

    C. The statement produces an error at line 6.

    D. The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company.

    E. The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.


    参考答案：E

  • 第3题：

    What's（）with your computer?

    • A、faulty
    • B、wrong
    • C、mistake
    • D、error

    正确答案:B

  • 第4题：

    What does ECC stand for?（）

    • A、Error-Checking Code
    • B、Extended-Checking Code
    • C、Error-Correction Code
    • D、Enhanced-Correction Code

    正确答案:C

  • 第5题：

    What produces a compiler error？（）  

    • A、 class A { public A（int x） {} }
    • B、 class A {} class B extends A { B（） {} }
    • C、 class A { A（） {} } class B { public B（） {} }
    • D、 class Z { public Z（int） {} } class A extends Z {}

    正确答案:D

  • 第6题：

    In your database server， the parameter PLSQL_OPTIMIZE_LEVEL has been set to 2. What would this setting achieve？（）

    • A、It degrades the run time and compiler performance.
    • B、It provides better run time and compiler performance.
    • C、It provides better optimization of the statement during parse time.
    • D、It forces the rule based optimizer to be used for statement optimization.
    • E、It provides better run time performance but slightly degraded compiler performance.
    • F、It provides better run time performance but slightly degraded run time performance.

    正确答案:E

  • 第7题：

    You are planning the migration of an existing application to Windows Azure.  The application includes a trace listener that produces log files.   The log files must be transferred to the Windows Azure Storage service each day with the minimum amount of effort.   You need to recommend an approach for transferring the log files.  What should you recommend？（）

    • A、 Perform on-demand transfers of custom error logs.
    • B、 Perform on-demand transfers of Windows Azure logs.
    • C、 Configure scheduled transfers of custom error logs.
    • D、 Configure scheduled transfers of Windows event logs.

    正确答案:C

  • 第8题：

    单选题
    Examine the commands executed in the following sequence：  1：SQL> CREATE ROLE mgrrole；  2：SQL> GRANT create user，select any table，connect，resource TO mgrrole；  3：SQL> GRANT select，update ON sh.sales TO mgrrole；  4：SQL> CREATE ROLE ceo IDENTIFIED BY boss；  5：SQL> GRANT mgrrole，drop any table，create any directory TO ceo；  6：SQL> GRANT ceo TO mgrrole；  Which statement is true about the above commands（）
    A

    The commands execute successfully.

    B

    Command 6 produces an error because of circular role grant.

    C

    Command 5 produces an error because a role cannot be granted to another role.

    D

    Command 3 produces an error because the MGRROLE role already contains system privileges.

    E

    The table created by HR remains and HR still has the CREATE TABLE system privilege.

    F

    The table created by HR remains and HR can grant the CREATE TABLE system privilege to other users.


    正确答案： F
    解析： 暂无解析

  • 第9题：

    单选题
    Given the following directory structure： bigProject |--source ||--Utils.java| |--classes |-- And the following command line invocation： javac -d classes source/Utils.java Assume the current directory is bigProject，what is the result？（）
    A

    If the compile is successful， Utils.class is added to the source directory.

    B

    The compiler returns an invalid flag error.

    C

    If the compile is successful， Utils.class is added to the classes directory.

    D

    If the compile is successful， Utils.class is added to the bigProject directory.


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    What is the implication of this command?（）
    A

    The command produces an error because the retention time cannot be reduced. 

    B

    All historical data is retained but the subsequent flashback data archives are maintained for only three years. 

    C

    All historical data is purged and the new flashback data archives are maintained for three years. 

    D

    All historical data older than three years is purged from the flashback archive FLA1. 


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Evaluate the following code：   SQL>VARIABLE task_name VARCHAR2（255）； SQL>VARIABLE sql_stmt VARCHAR2（4000）； SQL>BEGIN ：sql_stmt ：= ’SELECT COUNT（*） FROM customers  WHERE cust_state_province =’’CA’’’； ：task_name ：= ’MY_QUICKTUNE_TASK’；  DBMS_ADVISOR.QUICK_TUNE（DBMS_ADVISOR.SQLACCESS_ADVISOR，  ：task_name， ：sql_stmt）；  END；   What is the outcome of this block of code？（）
    A

     It creates a task and workload， and executes the task.

    B

     It creates a task and workload but does not execute the task.

    C

     It produces an error because a template has not been created.

    D

     It produces an error because the SQL Tuning Set has not been created.


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    You are planning the migration of an existing application to Windows Azure.  The application includes a trace listener that produces log files.   The log files must be transferred to the Windows Azure Storage service each day with the minimum amount of effort.   You need to recommend an approach for transferring the log files.  What should you recommend？（）
    A

     Perform on-demand transfers of custom error logs.

    B

     Perform on-demand transfers of Windows Azure logs.

    C

     Configure scheduled transfers of custom error logs.

    D

     Configure scheduled transfers of Windows event logs.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Evaluate the following block of code:What is the outcome of the above code?()

    A. It produces an error because a fully qualified host name needs to be specified.

    B. It produces an error because the range of ports associated with the hosts has not been specified.

    C. It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT and RESOLVE privileges.

    D. It creates an access control list (ACL) with the user ACCT_MGR who gets the CONNECT privilege but not the RESOLVE privilege.


    参考答案：C

  • 第14题：

    What operation on relations R and S produces the relation shown below?

    A．Union

    B．Difference

    C．Intersection

    D．Division


    正确答案：A

  • 第15题：

    What is the MD5 algorithm used for？（）

    • A、takes a fixed-length message and produces a 128-bit message digest
    • B、takes a variable-length message and produces a 168-bit message digest
    • C、takes a message less than 2^64 bits as input and produces a 160-bit message digest
    • D、takes a variable-length message and produces a 128-bit message digest ActualTests.com

    正确答案:D

  • 第16题：

    What is the default message level configured for IBM Tivoli Federated Identity Manager?（）

    • A、error messages only
    • B、disable all messages
    • C、error and warning messages only
    • D、info, error and warning messages

    正确答案:D

  • 第17题：

    Given the following directory structure： bigProject |--source ||--Utils.java| |--classes |-- And the following command line invocation： javac -d classes source/Utils.java Assume the current directory is bigProject，what is the result？（）

    • A、If the compile is successful， Utils.class is added to the source directory.
    • B、The compiler returns an invalid flag error.
    • C、If the compile is successful， Utils.class is added to the classes directory.
    • D、If the compile is successful， Utils.class is added to the bigProject directory.

    正确答案:C

  • 第18题：

    Sales details are being stored on a daily basis in the SALES_2007 table. A large amount of data is added to the table daily. To save disk space, you issued the following command: ALTER TABLE sales_2007 COMPRESS FOR ALL OPERATIONS; What would be the outcome of this command?（）

    • A、It produces an error because data already exists in the table.
    • B、It produces an error because compression can be enabled at table creation only.
    • C、It compresses all data added or modified henceforth but the existing data in the table is not compressed immediately.
    • D、It immediately compresses all existing data as well as new data, resulting from either fresh additions or modifications to existing data.

    正确答案:C

  • 第19题：

    单选题
    The INV_HISTORY table is created using the command: You would like to store the data belonging to the year 2006 in a single partition and issue the command: What would be the outcome of this command? （）
    A

    It executes successfully, and the transition point is set to '1-apr-2006'.

    B

    It executes successfully, and the transition point is set to '15-apr-2006'.

    C

    It produces an error because the partitions specified for merging are not adjacent.

    D

    It produces an error because the date values specified in the merge do not match the date values stored in the table.


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Evaluate the SQL statement: 1 SELECT a.emp_name, a.sal, a.dept_id, b.maxsal 2 FROM employees a, 3 (SELECT dept_id, MAX(sal) maxsal 4. FROM employees 5 GROUP BY dept_id) b 6 WHERE a.dept_id = b.dept_id 7 AND a. asl < b. maxsal; What is the result of the statement?（）
    A

    The statement produces an error at line 1.

    B

    The statement produces an error at line 3.

    C

    The statement produces an error at line 6.

    D

    The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all departments that pay less salary then the maximum salary paid in the company.

    E

    The statement returns the employee name, salary, department ID, and maximum salary earned in the department of the employee for all employees who earn less than the maximum salary in their department.


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Sales details are being stored on a daily basis in the SALES_2007 table. A large amount of data is added to the table daily. To save disk space, you issued the following command: ALTER TABLE sales_2007 COMPRESS FOR ALL OPERATIONS; What would be the outcome of this command?（）
    A

    It produces an error because data already exists in the table.

    B

    It produces an error because compression can be enabled at table creation only.

    C

    It compresses all data added or modified henceforth but the existing data in the table is not compressed immediately.

    D

    It immediately compresses all existing data as well as new data, resulting from either fresh additions or modifications to existing data.


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Evaluate the following block of code：   BEGIN DBMS_NETWORK_ACL_ADMIN.CREATE_ACL （ acl =>  ’mycompany-com-permissions.xml’， principal => ’ACCT_MGR’， is_grant => TRUE， privilege => ’connect’）；  DBMS_NETWORK_ACL_ADMIN.ASSIGN_ACL （ acl => ’mycompany-com-permissions.xml’， host => ’*.mycompany.com’）； END；   What is the outcome of the above code？（）
    A

     It produces an error because a fully qualified host name needs to be specified.

    B

     It produces an error because the range of ports associated with the hosts has not been specified.

    C

     It creates an access control list （ACL） with the user ACCT_MGR who gets the CONNECT and  RESOLVE privileges.

    D

     It creates an access control list （ACL） with the user ACCT_MGR who gets the CONNECT privilege but not the RESOLVE privilege.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    What produces a compiler error？（）
    A

     class A { public A（int x） {} }

    B

     class A {} class B extends A { B（） {} }

    C

     class A { A（） {} } class B { public B（） {} }

    D

     class Z { public Z（int） {} } class A extends Z {}


    正确答案： A
    解析： 暂无解析

  • 第24题：

    填空题
    What kind of sound does the mouse produce?It produces ____ sounds.

    正确答案： pleasant
    解析：
    简答填空题。从提示信息可推知，所缺内容有关描述声音的形容词。根据关键词句“Not only are the sounds pleasant”可知，鼠标发出的声音非常悦耳，故此处应填pleasant。
    【录音原文】
    　　Ladies and gentlemen, welcome to this electronics exhibition. Here you can find almost all of the latest products of our company. Let’s go to the hardware section first. Please follow me. The products on display in this section are specially designed for old people who wish to use a computer at home. Look at the keyboard. Its big keys are particularly easy to use for those whose eye sight is not good enough. Here, please take a close look at the mouse. It can fit all sizes of hands. Besides, it has a special sound effect. Listen. Not only are the sounds pleasant, but the two buttons give out different sounds. Now I’ll give you three minutes to try for yourselves, then we’ll go to the software section.
    Q11: What can visitors see at the exhibition?
    Q12: Which section do the visitors go to see first?
    Q13: For whom are the products specially designed?
    Q14: What’s special about the keyboard?
    Q15: What kind of sound does the mouse produce?

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