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【多选题】

The statements below compare and contrast link state and distance vector routing protocols. Which of these are true?（）

A、Distance vector protocols send the entire routing table to directly connected neighbors.

B、Distance vector protocols are responsible for sending updates to all networks listed in the routing table.

C、Link state protocols are responsible for sending the entire routing table to the whole network.

D、Link state protocols send updates regarding their own links status to all other routers on the network.

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第1题
[] Examine the structure of the EMPLOYEES table: You need to update the records of employees 103 and 115. The UPDATE statement you specify should update the rows with the values specified below: Which UPDATE statement meets the requirements?（） Examine the structure of the EMPLOYEES table: You need to update the records of employees 103 and 115. The UPDATE statement you specify should update the rows with the values specified below: Which UPDATE statement meets the requirements?（）

A、A.
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第2题
[单选题] 主甲板以下是二层甲板。（）

A、The deck below the lower deck is known as ‘tween deck.  B、The deck below the main deck is known as ‘tween deck.  C、The deck above the main deck is known as ‘tween deck.  D、The deck below the lower deck is known as main deck.  

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第3题
[] Evaluate the set of SQL statements: What is true about the set?（） Evaluate the set of SQL statements: What is true about the set?（）

A、A. The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、B. The ROLLBACK statement frees the storage space occupies by the DEPT table.  C、C. The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、D. The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第4题
[单选题] A sequence was created with the DDL statement shown below:CREATE SEQUENCE my_seq START WITH 5 INCREMENT BY 5 CACHE 5 User1 successfully executes the following statements in Connection1: VALUES NEXT VALUE FOR my_seq INTO :con1hvar VALUES NEXT VALUE FOR my_seq INTO :con1hvar User2 successfully executes the following statement in Connection2: VALUES NEXT VALUE FOR my_seq INTO :con2hvar After User1 & User2 are finished, User3 executes the following statement in Connection3: SELECT NEXT VALUE FOR my_seq FROM sysibm.sysdummy1Which value will be returned by the query?（）

A、20  B、25  C、50  D、55  

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第5题
[单选题] Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）

A、The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、The ROLLBACK statement frees the storage space occupied by the DEPT table.  C、The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第6题
[单选题] Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）

A、The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、The ROLLBACK statement frees the storage space occupied by the DEPT table.  C、The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第7题
[单选题] Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCHAR2(14), loc VARCHAR2(13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）

A、The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、The ROLLBACK statement frees the storage space occupied by the DEPT table.  C、The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第8题
[单选题] Evaluate the set of SQL statements: CREATE TABLE dept (deptno NUMBER(2), dname VARCNAR2(14), 1oc VARCNAR2 (13)); ROLLBACK; DESCRIBE DEPT What is true about the set?（）

A、The DESCRIBE DEPT statement displays the structure of the DEPT table.  B、The ROLLBACK statement frees the storage space occupies by the DEPT table.  C、The DESCRIBE DEPT statement returns an error ORA-04043: object DEPT does not exist.  D、The DESCRIBE DEPT statement displays the structure of the DEPT table only if there is a COMMIT statement introduced before the ROLLBACK statement.  

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第9题
[单选题] 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.  

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第10题
[] The Oracle Database 11g database is running in the ARCHIVELOG mode. The archived redo log files are stored on three locations. The Flash Recovery Area is one of the locations. The details are given below: Which statement is true regarding what this command accomplishes?（） The Oracle Database 11g database is running in the ARCHIVELOG mode. The archived redo log files are stored on three locations. The Flash Recovery Area is one of the locations. The details are given below: Which statement is true regarding what this command accomplishes?（）

A、A. All archived redo log files backed up at least twice to tape are deleted.  B、B. All archived redo log files backed up at least once to tape are eligible for deletion.  C、C. All archived redo log files backed up at least twice to tape are deleted from the flash recovery area.  D、D. All archived redo log files in local archiving destinations and the flash recovery area backed up at least twice to tape are eligible for deletion.  

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