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【单选题】

What statement about Transit AS is true？（）

A、Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS

B、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS

C、Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS

D、None of the above

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第1题
[单选题] You issued the following statement：  SQL> ALTER DATABASE BACKUP CONTROLFILE TO TRACE；  What will be the result of issuing the statement？（）  

A、 The control file will be multiplexed.  B、 The control file will be recreated.  C、The script containing the CREATE CONTROLFILE statement will be created.  D、 The binary backup of the control file will be created.  

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第2题
[单选题] You execute the following command to enable a session in resumable mode： SQL> ALTER SESSION ENABLE RESUMABLE TIMEOUT 60; What is the impact of a timeout on the statements being suspended？（）

A、The statements remain suspended for at least 60 seconds.  B、The statements are suspended for 60 seconds and then they are executed.  C、The suspended statements error out if the problem is not rectified within 60 seconds.  D、The statements are automatically suspended 60 seconds after an error is received， and then attempt to execute normally again.  

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第3题
[] You work as an application developer at Certkiller .com. You are currently in theprocess of reviewing an application that was created by a fellow developer.The application that you are reviewing includes a declaration for a collection named EmployeeList， which stores Employee objects. The declaration is shown below： public class EmployeeList ： Enumerator， IEnumerable { // Class implementation } You require the ability to iterate through the EmployeeList with minimum development effort.What should you do？（）

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第4题
[单选题] You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance？（）

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第5题
[单选题] The Database Resource Manager is not currently active in your database that is up and running. You created a resource plan named DAY_PLAN that contains two sub-plans named MANAGERS_PLAN and CLERKS_PLAN. You decided to activate DAY_PLAN by executing the following statement：       SQL>ALTER SYSTEM SET RESOURCE_MANAGER_PLAN = ’managers_plan’；  What will be the outcome of this statement？（）  

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第6题
[单选题] A batch application executes a large number of update statements. The service level agreement for the application states that the application must complete its work as quickly as possible to ensure that dependent workloads can start ontime. What is one way to help the application complete quickly?（）

A、Code the application to issue a LOCK TABLE statement.    B、Code the application to issue a LOCK ROW statement.    C、Decrease the number of I/O servers.    D、Increase the locklist parameter.   

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第7题
[单选题] You have a long-running process you want to assign to a specific UNDO segment brought online for that express purpose. You are not using automatic UNDO management. What statement can be used for this task? （）

A、ALTER DATABASE   B、SET TRANSACTION   C、ALTER ROLLBACK SEGMENT   D、ALTER TABLE  

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第8题
[] Cisco ASDM provides 16 different graphs the help identify security risks by displaying data aboutpotentially malicious activity. What is one kind of data these graphs show？ （）

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第9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10题
[单选题] In JUNOS software， how is route summarization at the L1/L2 border configured？（）

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