Which statement regarding the contents of the V$PARAMETER view is true？（）

A . The use of discontiguous subnets is not allowed B . The use of variable length subnet masks is permitted C . RIP v1 is a classless routing protocol D . IGRP supports classless routing within the same autonomous system E . RIP v2 supports classless routing

A . It can have a maximum of five expressions in a list  B . It returns the highest NOT NULL value in the list for all rows  C . It requires that all expressions in the list must be of the same data type  D . It requires that at least one of the expressions in the list must have a NOT NULL value

A . A subquery that defines a view cannot include the GROUP BY clause  B . A view that is created with the subquery having the DISTINCT keyword can be updated  C . A view that is created with the subquery having the pseudo column ROWNUM keyword cannot be updated  D . A data manipulation language (DML) operation can be performed on a view that is created with the subquery having all the NOT NULL columns of a table

A .  When a table is dropped， the corresponding indexes are automatically dropped. B .  For each DML operation performed， the corresponding indexes are automatically updated. C .  Indexes should be created on columns that are frequently referenced as part of an expression. D .  A non-deferrable PRIMARY KEY or UNIQUE KEY constraint in a table automatically creates a uniqueindex.

A . Each B channel can transmit up to 64 kbps B . The ISDN B channel carries voice or data C . The ISDN D channel transmits control information. D . The D channel transmission rate varies depending on the service used. E . HDLC or PPP can be used to encapsulate D channel information.

A . The LIKE operator cannot be used with single-row subqueries  B . The NOT IN operator is equivalent to IS NULL with single-row subqueries  C . =ANY and =ALL operators have the same functionality in multiple-row subqueries  D . The NOT operator can be used with IN, ANY, and ALL operators in multiple-row subqueries&e

A .  An interface can belong to multiple Flex Links. B .  Flex Links operate only over single pairs of links. C .  Flex Link pairs must be of the same interface type D .  Flex Links automatically disable STP so no BPDUs are propagated E .  Failover from active to standby on Flex Links takes less than a second

A . 802.1X is simple to implement on any workstation. B . 802.1X requires access-lists to allow IP voice traffic across. C . Authentication is initiated when the workstation connects to an Ethernet port. D . 802.1X requires HTTP access to initiate authentication.

A .  It requires relinking of the Oracle binary. B .  It does not require database instance shutdown. C .  It can detect conflicts between two online patches. D .  It is available for installing all patches on all platforms.  E .  It works only in a single database instance environment.

A . A virtual private catalog owner can create a local stored script, and have read/write access to a global stored script. B . The virtual private catalog owner cannot create and modify the stored scripts. C . The set of views and synonyms that make up the virtual private catalog is stored in the schema of the RMAN recovery catalog owner. D . To perform most of the RMAN operations, the virtual catalog owner must have the SYSDBA or SYSOPER privilege on the target database

A . Subqueries can contain GROUP BY and ORDER BY clauses  B . Main query and subquery can get data from different tables  C . Main query and subquery must get data from the same tables  D . Subqueries can contain ORDER BY but not the GROUP BY clause  E . Only one column or expression can be compared between the main query and subquery F .  Multiple columns or expressions can be compared between the main query and subquery

A . It ignores NULL values  B . Reversing the order of the intersected tables alters the result  C . The names of columns in all SELECT statements must be identical  D . The number of columns and data types must be identical for all SELECT statements in the query&e

A . Listeners use only the TCP/IP protocol. B . Multiple listener processes can run simultaneously on a host. C . Multiple database instances can be registered with a single listener. D . The listener-related errors can be traced only at the administrative level. E . Only one database instance can be registered with a single listener at any time

A . A virtual private catalog owner can create a local stored script, and have read/write access to a global stored script.  B . The virtual private catalog owner cannot create and modify the stored scripts.  C . The set of views and synonyms that make up the virtual private catalog is stored in the schema of the RMAN recovery catalog owner.  D . To perform most of the RMAN operations, the virtual catalog owner must have the SYSDBA or SYSOPER privilege on the target database.&e

A . Listeners use only the TCP/IP protocol. B . Multiple listener processes can run simultaneously on a host. C . Multiple database instances can be registered with a single listener. D . The listener-related errors can be traced only at the administrative level. E . Only one database instance can be registered with a single listener at any time.

A . The database can have more than one undo tablespace. B . The UNDO_TABLESPACE parameter is valid in both automatic andmanualundo management. C . Undo segments automatically grow and shrink as needed， acting as circular storage buffer for their assigned transactions. D . An undotablespaceis automatically created if the UNDO_TABLESPACEparameter is not set and the UNDO_MANAGEMENT parameter is set to AUTO during the database instance start up.

A . Each target database requires its own recover catalog.  B . RMAN scripts can be stored in the recovery catalog or the target control file.  C . A channel is a stream of data to a device type and corresponds to one server session.  D . The RMAN executable interprets sever session commands and establishes connections to the target database.

A . Passive routes are in the process of being calculated by DUAL. B . EIGRP supports VLSM，route summarization，and routing update authentication. C . EIGRP exchanges full routing table information with neighboring routers with every update. D . If the feasible successor has a higher advertised distance than the successor route，it becomes theprimary route. E . A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.

A .  It returns versions of rows only within a transaction. B .  It can be used in subqueries contained only in a SELECT statement. C .  It will return an error if the undo retention time is less than the lower bound time or SCN specified. D .  It retrieves all versions including the deleted as well as subsequently reinserted versions of the rows.

A . A subquery can retrieve zero or more rows  B . Only two subqueries can be placed atone level  C . A subquery can be used only in SQL query statements  D . A subquery can appear on either side of a comparison operator  E . There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement&e

A . Synonyms can be created only for a table  B . Synonyms are used to reference only those tables that are owned by another user  C . A public synonym and a private synonym can exist with the same name for the same table  D . The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid

A .  It saves disk space and reduces memory usage. B .  It saves disk space but has no effect on memory usage. C .  It incurs extra CPU overhead during DML as well as direct loading operations. D .  It incurs extra CPU overhead during DML but not direct loading operations. E .  It requires uncompress operation during I/O.

A . It drops the connection after the specified number of login attempts fail for any user. B . It is enforced only if the password profile is enabled for the user.  C . It locks the user account after the specified number of attempts.  D . It drops the connection after the specified number of login attempts fail only for users who have the SYSDBA privilege.

A . Passiveroutes are in the process of being calculated by DUAL. B . EIGRP supports VLSM, route summarization, and routing update authentication. C . EIGRP exchanges full routing table information with neighboring routers with every update. D . If the feasible successor has a higher advertised distance than the successor route, it becomes the primary route. E . A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.

A .  The amount of undo retained is user controlled. B .  SecureFile LOBs can be used only for nonpartitioned tables. C .  Fragmentation is minimized by using variable-sized chunks dynamically. D .  SecureFile encryption allows for random reads and writes of the encrypted data. E .  It automatically detects duplicate LOB data and conserves space by storing only one copy.