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The primary purpose of an SLA between the service provider and customer is to agree on which of the following？（）
- A、Monthly bandwidth limits， server configuration， and software baseline.
- B、Number of dedicated technicians assigned to network issues.
- C、Level of service including energy consumption， bandwidth and server color.
- D、Level of service including time limits for service， repair and replacement.
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更多 “The primary purpose of an SLA between the service provider and customer is to agree on which of the following？（）A、Monthly bandwidth limits， server configuration， and software baseline.B、Number of dedicated technicians assigned to network issues.C、Level of service including energy consumption， bandwidth and server color.D、Level of service including time limits for service， repair and replacement.” 相关考题
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You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?()
A. ALTER TABLE students ADD PRIMARY KEY _ id;B. ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);C. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;D. ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);E. ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
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The data station usually means a(71)unit that provides data for transmission, that accepts transmitted data, and that performs all functions necessary for communication with another functional unit. Data stations may be divided into two kinds, the primary stations and the secondary stations, (72)control functions.In(73)data link control, the primary station is the data station that supports the primary control functions of the data link, generates commands to be transmitted, and interprets received responses. Specific responsibilities assigned to the primary station include initialization of control signal interchange, organization of data flow and actions regarding error control and error recovery functions. The secondary station executes data link control functions as (74)by the primary station, interprets received commands and (75) responses to be transmitted.A．performanceB．functionalC．capacityD．quality
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The primary line module has failed and the spare line module is nowactive.What occurs,by default,when the primary line module returns to an operational status?()
A.The primary line module is inactive for five minutes and then becomes active.B.The primary line module is in standby mode，while the spare line module remains active.C.The primary line module becomes active immediately and the spare line module becomes inactive.D.The primary and spare line modules are active for five minutes，after which time the spare line module becomes inactive.
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为表TEST中ID列添加主键约束的语法是（）A、ALTER TABLE TEST CHANGE（ ID INT PRIMARY KEY）B、ALTER TABLE TEST ADD（ ID INT PRIMARY KEY）C、ALTER TABLE TEST MODIFY（ ID INT PRIMARY KEY）D、ALTER TABLE TEST ADD CONSTRAINT PK PRIMARY KEY （ID）
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Which two statements are true about the primary key constraint in a table？ （）A、It is not possible to disable the primary key constraint.B、It is possible to have more than one primary key constraint in a single table.C、The primary key constraint can be referred by only one foreign key constraint.D、The primary key constraint can be imposed by combining more than one column.E、The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
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You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty.Which statement accomplishes this task?（）A、ALTER TABLE students ADD PRIMARY KEY student_id;B、ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student _ id);C、ALTER TABLE students ADD CONSTRAINT stud _ id _pk PRIMARY KEY (student _ id);D、ALTER TABLE students MODIFY CONSTRAINT stud _ id _pk PRIMARY KEY (student _ id);
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Move the secondary hard drive from the secondary to the primary bus and then reformat the hard drive after rebooting then reassign the drive letters in disk management prior to installing the new DVD drive on the secondary bus.D
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考题
单选题As automobiles replaced horses as the primary means of transportation, it was widely anticipated that the time spent in transit by the average traveler would decrease.A
As automobiles replaced horses as the primary means of transportation, it was widely anticipated thatB
Insofar as automobiles replaced horses as the primary means of transportation, it was anticipated widelyC
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考题
单选题The primary line module has failed and the spare line module is nowactive.What occurs，by default，when the primary line module returns to an operational status？（）A
The primary line module is inactive for five minutes and then becomes active.B
The primary line module is in standby mode，while the spare line module remains active.C
The primary line module becomes active immediately and the spare line module becomes inactive.D
The primary and spare line modules are active for five minutes，after which time the spare line module becomes inactive.
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单选题Examine the command： ALTER DATABASE ADD SUPPLEMENTAL LOG DATA （PRIMARY KEY） COLUMNS； What does the command accomplish？（）A
Creates an additional copy of the database online redo log files. B
Stores the primary key column values of each row involved in a DML operation in the online redo log files. C
Stores the primary key column values of each row involved in a DML operation in the supplemental log files. D
Stores the old and new primary key column values of each row involved in a DML operation only when the primary key is modified in the online redo log files.
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单选题How many IP addresses can be configured in a given interface？（）A
one primary and one secondary IP addressB
one IP addressC
as many IP addresses as you wantD
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单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）A
ALTER TABLE students ADD PRIMARY KEY _ id;B
ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);C
ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;D
ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);E
ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
考题
多选题Which two statements are true about the primary key constraint in a table？ （）AIt is not possible to disable the primary key constraint.BIt is possible to have more than one primary key constraint in a single table.CThe primary key constraint can be referred by only one foreign key constraint.DThe primary key constraint can be imposed by combining more than one column.EThe non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
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单选题You need to modify the STUDENTS table to add a primary key on the STUDENT_ID column. The table is currently empty. Which statement accomplishes this task?（）A
ALTER TABLE students ADD PRIMARY KEY student_id;B
ALTER TABLE students ADD CONSTRAINT PRIMARY KEY (student_id);C
ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY student_id;D
ALTER TABLE students ADD CONSTRAINT stud_id_pk PRIMARY KEY (student_id);E
ALTER TABLE students MODIFY CONSTRAINT stud_id_pk PRIMARY KEY (student_id);
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