A technician is servicing a customer’s color laser printer and notices excess toner in the printer.Which of the following tools would BEST assist the technician in removing the excess toner?（）A、Damp towelB、Compressed airC、Alcohol wipeD、Computer vacuum
A technician is servicing a customer’s color laser printer and notices excess toner in the printer.Which of the following tools would BEST assist the technician in removing the excess toner?（）
- A、Damp towel
- B、Compressed air
- C、Alcohol wipe
- D、Computer vacuum
相关考题：
在考生文件夹下建立项目sales m。(2)把考生文件夹中的数据库cust m加入sales m项目中。(3)为cust m数据库中cust表增加字段：联系电话C(12)，字段值允许“空”。(4)为cust m数据库中orderl表“送货方式”字段设计默认值为“铁路”。
Which statement adds a constraint that ensures the CUSTOMER_NAME column of the CUSTOMERS table holds a value?() A. ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;B. ALTER TABLE customers MODIFY CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;C. ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn NOT NULL;D. ALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn IS NOT NULL;E. ALTER TABLE customers MODIFY name CONSTRAINT cust_name_nn NOT NULL;F. ALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name NOT NULL;
YouneedtogeneratealistofallcustomerlastnameswiththeircreditlimitsfromtheCUSTOMERStable.Thosecustomerswhodonothaveacreditlimitshouldappearlastinthelist.Whichtwoquerieswouldachievetherequiredresult?() A.SELECTcust_last_name,cust_credit_limitFROMcustomersORDERBYcust_credit_limitDESCB.SELECTcust_last_name,cust_credit_limitFROMcustomersORDERBYcust_credit_limitC.SELECTcust_last_name,cust_credit_limitFROMcustomersORDERBYcust_credit_limitNULLSLASTD.SELECTcust_last_name,cust_credit_limitFROMcustomersORDERBYcust_last_name,cust_credit_limitNULLSLAST
Youhavecreatedajobclass,CUST_JOB_1,withtwojobs,CUST_JOB_1_AandCUST_JOB_1_B.Whichtwostatementsaretrue?() A.Thememberjobswouldgetdroppedwhenthejobclassisdropped.B.Boththejobswouldbeexecutedconcurrently.C.Thememberjobswouldgetdisabledwhenthejobclassisdropped.D.Theattributesdefinedattheclasslevelwouldbeappliedtoboththejobs.E.Jobsinthejobclassmusthavebeenassignedthesamepriority.
Click the Exhibit button and examine the data from the ORDERS and CUSTOMERS tables.Evaluate the SQL statement:SELECT *FROM ordersWHERE cust_id = (SELECT cust_idFROM customersWHERE cust_name = ‘Smith‘);What is the result when the query is executed?（）A.AB.BC.CD.DE.E
在Oracle中,你以SYSDBA登录,CUSTOMER表位于Mary用户方案中,下面哪条语句为数据库中的所有用户创建CUSTOMER表的同义词()。 A.CREATE PUBLIC SYNONYM cust ON mary.customerB.CREATE PUBLIC SYNONYM cust FOR mary.customerC.CREATE SYNONYM cust ON mary.customer FOR PUBLICD.不能创建CUSTOMER的公用同义词
You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: CUST_ID NUMBER(4) NOT NULL CUST_NAME VARCHAR2(100) NOT NULL CUST_ADDRESS VARCHAR2(150) CUST_PHONE VARCHAR2(20) Which SELECT statement accomplishes this task?（）A、SELECT* FROM customers;B、SELECT name, address FROM customers;C、SELECT id, name, address, phone FROM customers;D、SELECT cust_name, cust_address FROM customers;E、SELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
You need to ensure that the Cust_CalcData column is implemented appropriately. What should you do?（）A、Specify that the Cust_CalcData column must be implemented as a computed column of the table. B、Specify that the Cust_CalcData column must be indexed using a non-clustered index.C、Specify that the Cust_CalcData column must be implemented as a column that uses a user-defined data type.D、Specify that the Cust_CalcData column must be updated by a SQL Server Agent job that runs nightly.
单选题在Mary的方案中已经存在“客户”表。应使用哪条语句来为所有数据库用户创建一个“客户”表的同义词（）ACREATE PUBLIC SYNONYM cust ON mary.客户BCREATE PUBLIC SYNONYM cust FOR mary.客户CCREATE SYNONYM cust ON mary.客户FORPUBLICDCREATE SYNONYM cust ON mary.客户；GRANT SELECT ON cust TO PUBLIC
单选题You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: CUST_ID NUMBER(4) NOT NULL CUST_NAME VARCHAR2(100) NOT NULL CUST_ADDRESS VARCHAR2(150) CUST_PHONE VARCHAR2(20) Which SELECT statement accomplishes this task?（）ASELECT* FROM customers;BSELECT name, address FROM customers;CSELECT id, name, address, phone FROM customers;DSELECT cust_name, cust_address FROM customers;ESELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
单选题Examine the data from the ORDERS and CUSTOMERS tables. ORDERS ORD_ID ORD_DATE CUST_ID 12-JAN- 100 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 25-JUN- 104 15 6000 18-JUL- 105 20 5000 106 18-JUL- 35 7000 21-JUL- 107 20 6500 04-AUG- 109 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Lind New York Evaluate the SQL statement: SELECT * FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Smith'); What is the result when the query is executed?（）AORD_ID ORD_DATE CUST_ID ORD_TOTAL 09-MAR- 102 35 12500 18-JUL- 106 35 7000 04-AUG- 108 10 8000BORD_ID ORD_DATE CUST_ID ORD_TOTAL 09-MAR- 102 35 12500 18-JUL- 106 35 7000CORD_ID ORD_DATE CUST_ID ORD_TOTAL 04-AUG- 108 10 8000DThe query fails because the subquery returns more than one row.EThe query fails because the outer query and the inner query are using different tables.
多选题You have created a job class， CUST_JOB_1， with two jobs， CUST_JOB_1_A and CUST_JOB_1_B. Which two statements are true？ （）AThe member jobs would get dropped when the job class is dropped.BBoth the jobs would be executed concurrently.CThe member jobs would get disabled when the job class is dropped.DThe attributes defined at the class level would be applied to both the jobs.EJobs in the job class must have been assigned the same priority.
单选题The accounts receivable department requested an accounts status to allow users to enter either a customer name, customer number, customer phone number and then display the customer out standing balance. You want to restrict the data retrieved based on values entered by the users. Which where clause would you write in the query to select statement to accomplish this task?（）Ap_where_clause B:p_where_clause CWHERE CUST_ID=P_CUST_ID or cust_name=:p_cust_name or cust_phone=:p_cust_phone DWhere cust_ID=p_custid cust_name=p_cust_name or cust_phone=p_cust_phone
单选题A technician is servicing the Human Resource director’s computer which contains payroll software and salary information. Which of the following should the technician do to ensure confidentiality of the payroll information?（）ABackup the confidential data to the technician’s USB drive to ensure nothing is accidently deleted.BUninstall the payroll software to ensure confidentiality.CHave the director remove sensitive data before the computer will be repaired.DPerform needed repairs while avoiding sensitive data.
单选题在Oracle中，你以SYSDBA登录，CUSTOMER表位于Mary用户方案中，下面哪条语句为数据库中的所有用户创建CUSTOMER表的同义词（）。ACREATE PUBLIC SYNONYM cust ON mary.customerBCREATE PUBLIC SYNONYM cust FOR mary.customerCCREATE SYNONYM cust ON mary.customer FOR PUBLICD不能创建CUSTOMER的公用同义词
单选题You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: Which SELECT statement accomplishes this task?（）A SELECT* FROM customers;B SELECT name, address FROM customers;C SELECT id, name, address, phone FROM customers;D SELECT cust_name, cust_address FROM customers;E SELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
单选题Examine the data from the ORDERS and CUSTOMERS table. ORDERS ORD_ID ORD_DATE CUST_ID ORD_TOTAL 100 12-JAN-2000 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 104 25-JUN-2000 15 6000 105 18-JUL-2000 20 5000 106 18-JUL-2000 35 7000 107 21-JUL-2000 20 6500 04-AUG- 108 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Linda New York Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?（）ASELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Mating' AND ord _ date IN ('18-JUL-2000','21-JUL-2000');BSELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'MARTIN'));CSELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust _ name = 'Martin');DSELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');
多选题You need to generate a list of all customer last names with their credit limits from the CUSTOMERS table. Those customers who do not have a credit limit should appear last in the list. Which two queries would achieve the required result?（）ASELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limit DESCBSELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limitCSELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_credit_limit NULLS LASTDSELECT cust_last_name, cust_credit_limit FROM customers ORDER BY cust_last_name, cust_credit_limit NULLSLAST
单选题Which statement adds a constraint that ensures the CUSTOMER_NAME column of the CUSTOMERS table holds a value?（）AALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;BALTER TABLE customers MODIFY CONSTRAINT cust_name_nn CHECK customer_name IS NOT NULL;CALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn NOT NULL;DALTER TABLE customers MODIFY customer_name CONSTRAINT cust_name_nn IS NOT NULL;EALTER TABLE customers MODIFY name CONSTRAINT cust_name_nn NOT NULL;FALTER TABLE customers ADD CONSTRAINT cust_name_nn CHECK customer_name NOT NULL;
单选题Click the Exhibit button and examine the data from the ORDERS and CUSTOMERS tables. Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin placed his orders?（）A SELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Martin' AND ord_date IN ('18-JUL-2000','21-JUL-2000');B SELECT ord_id, cust_id, ord_total FROM orders WHERE ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'Martin'));C SELECT ord_id, cust_id, ord_total FROM orders WHERE ord_date IN (SELECT ord_date FROM orders, customers WHERE cust_name = 'Martin');D SELECT ord_id, cust_id, ord_total FROMorders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust_name = 'Martin');
单选题You need to produce a report for mailing labels for all customers. The mailing label must have only the customer name and address. The CUSTOMERS table has these columns: CUST_ID NUMBER(4) NOT NULL CUST_NAME VARCHAR2(100) NOT NULL CUST_ADDRESS VARCHAR2(150) CUST_PHONE VARCHAR2(20) Which SELECT statement accomplishes this task?（）ASELECT* FROM customers;BSELECT name, address FROM customers;CSELECT id, name, address, phone FROM customers;DSELECT cust_name, cust_address FROM customers;ESELECT cust_id, cust_name, cust_address, cust_phone FROM customers;
单选题Examine the data from the ORDERS and CUSTOMERS table. ORDERS ORD_ID ORD_DATE CUST_ID ORD_TOTAL 100 12-JAN-2000 15 10000 09-MAR- 101 40 8000 09-MAR- 102 35 12500 15-MAR- 103 15 12000 104 25-JUN-2000 15 6000 105 18-JUL-2000 20 5000 106 18-JUL-2000 35 7000 107 21-JUL-2000 20 6500 04-AUG- 108 10 8000 CUSTOMERS CUST_ID CUST_NAME CITY 10 Smith Los Angeles 15 Bob San Francisco 20 Martin Chicago 25 Mary New York 30 Rina Chicago 35 Smith New York 40 Linda New York Which SQL statement retrieves the order ID, customer ID, and order total for the orders that are placed on the same day that Martin places his orders?（）ASELECT ord_id, cust_id, ord_total FROM orders, customers WHERE cust_name='Mating' AND ord _ date IN ('18-JUL-2000','21-JUL-2000');BSELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders WHERE cust_id = (SELECT cust_id FROM customers WHERE cust_name = 'MARTIN'));CSELECT ord_id, cust_id, ord_total FROM orders Where ord_date IN (SELECT ord_date FROM orders, customers Where cust _ name = 'Martin');DSELECT ord_id, cust_id, ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE cust name = 'Martin');
名词解释题整备线 servicing siding