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 {}

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 {}

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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.

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.

Programmers test a program by running it to ensure that the(74)are correct and that the program produces the desired outcome. If errors do occur, the programmer must make the appropriate change and recheck the program until it produces the correct results. This(75)is called testing and debugging.A.commandsB.softwareC.instructionsD.measure

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What operation on relations R and S produces the relation shown below?A.UnionB.DifferenceC.IntersectionD.Division

What is the most important feature of the backpack invented by Lawrence C.Rome and his colleagues?A It produces electricity for electronic devices while the wearer walks.B It can be used as cellphones,GPS in the military actions or field studies.C It is small and convenient.D It is light and easy to carry.

What are the three partner benefits of service contracts?()A、renews automatically for the lifetime of the productB、eliminates network problemsC、generate recurring revenueD、helps customers speed architectural planning and designE、produces higher margins than product sales alongF、strengthens customer loyalty

What is the MD5 algorithm used for?()A、takes a fixed-length message and produces a 128-bit message digestB、takes a variable-length message and produces a 168-bit message digestC、takes a message less than 2^64 bits as input and produces a 160-bit message digestD、takes a variable-length message and produces a 128-bit message digest ActualTests.com

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.

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.

单选题The new recipe requires fewer exotic ingredients and takes less time than it, but produces just as tasty a souffle as the old recipe.Aand takes less time than it, but produces just as tasty a souffle as the old recipeBthat take less time than the old recipe, producing just as tasty a souffleCand takes less time than the old recipe, but produces just as tasty a souffleDalso taking less time than the old recipe, but produces just as tasty a souffleEbut produces just as tasty a souffle as the old recipe, but takes less time

单选题The coil of wire rotating in the magnetic field produces the().AvoltageBcurrentCpowerDfrequency

单选题Changing from solid to liquid, water takes in heat from all substances near it, and this _____ produces artificial cold surrounding it.AabsorptionBtransitionCconsumptionDinteraction

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.

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单选题What is the implication of this command?()AThe command produces an error because the retention time cannot be reduced. BAll historical data is retained but the subsequent flashback data archives are maintained for only three years. CAll historical data is purged and the new flashback data archives are maintained for three years. DAll historical data older than three years is purged from the flashback archive FLA1.

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