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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The best title for the passage is ______.A. TWO LOVELY MICEB. HELP PRODUCES LOVEC. FRIENDS IN NEEDD. LOVE IS ALL
It can be inferred from the passage thatA. it is necessary to keep the air-conditioning on all the timeB. it seems possible for every household to cut emissions of CO2C. the average US household produces about 3,000 pounds of CO2 a monthD. the average European household produces about 1,000 pounds of CO2 a month
Because sheep () meat and wool, they are valued in many countries.A. produces bothB. both produceC. produce bothD. both produces知识点: Newassignment1
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.
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
Refer to the output. What IOS command produces this output?() A. show i p ospfB. show ip ospf interfaceC. show ipv6 ospf interfaceD. show ipv6 ospf
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.
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?（）AThe statement produces an error at line 1.BThe statement produces an error at line 3.CThe statement produces an error at line 6.DThe 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.EThe 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.
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?（）AIt produces an error because data already exists in the table.BIt produces an error because compression can be enabled at table creation only.CIt compresses all data added or modified henceforth but the existing data in the table is not compressed immediately.DIt immediately compresses all existing data as well as new data, resulting from either fresh additions or modifications to existing data.
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.
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.
单选题A centrifugal pump produces the required pressure energy by means of a rotating （） provided with vanes.ApropellerBimpellerCcircumferenceDscrew
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多选题What happens when you run the SQL Tuning Advisor with limited scope?（）AAccess pathanalysis is not performed for SQL statements.BSQL structure analysis is not performed for SQL statements.CSQL Profile recommendations are not generated for SQL statements.DStaleness and absence of statistics are not checked for the objects in the SQL Tuning Advisor. In this case, SQL Tuning Advisor produces recommendations based on statistical checks, access path analysis, and SQL structure analysis. SQL profile recommendations are not generated.
单选题Evaluate the following code： SQLVARIABLE task_name VARCHAR2（255）； SQLVARIABLE sql_stmt VARCHAR2（4000）； SQLBEGIN ：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.
填空题What kind of sound does the mouse produce?It produces ____ sounds.