Which two statements about WRED are true？ （）

A . The bigfile tablespace have only one data file. B . The segment space management is automatic. C . The extent management is dictionary managed. D . The database can have only one bigfile tablespace. E . The bigfile tablespace can be converted to a smallfile tablespace.

A .  The bus is limited to 32 devices B .  It is a full duplex serial standard C .  It is a half-duplex serial standard D .  It allows up to 320 MB/s of shared channel bandwidth

A .  It fragments and encapsulates all packets in a fragmentation header. B .  Packets smaller than the fragmentation size are interleaved between the fragments of thelarger packets. C .  Packets larger than the fragmentation size are always fragmented， and cannot be interleaved，even if the traffic is voice traffic. D .  It fragments and encapsulates packets that are longer than a configured size， but does not encapsulate smaller packets inside a fragmentation header.

A . Zoning increases security. B . DNS queries are used for software zoning. C . Software zoning is more secure than hardware zoning. D . When using zones and VSANs together, the zone is created first. E . Zoning requires that VSANs be established before it becomes operational.

A . Caching allows pacing of MSDP messages. B . Caching reduces join latency. C . Caching should not be done by an MSDP speaker. D . Caching is used to update the BGP MDT address family.

A . The source and target platforms must be the same B . Redo logs, control files and temp files are also transported C . The transported database must have the same database identifier (DBID) as the source database and cannot be changed D . The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported E . Recovery Manager (RMAN) is used to convert the necessary data files of the database if the target platform is different and has different endian format

A . A single row subquery can retrieve data from only one table. B . A SQL query statement cannot display data from table B that is referred to in its subquery, unless table B is included in the main query's FROM clause. C . A SQL query statement can display data from table B that is referred to in its subquery, without including table B in its own FROM clause. D . A single row subquery can retrieve data from more than one table. E . A single row subquery cannot be used in a condition where the LIKE operator is used for comparison. F . A multiple-row subquery cannot be used in a condition where the LIKE operator is used for comparison.

A . The source and target platforms must be the same B . Redo logs, control files and temp files are also transported C . The transported database must have the same database identifier (DBID) as the source database and cannot be changed D . The COMPATIBLE parameter must be set to 10.0.0.0 or higher and the database must be opened in readonly mode before being transported E . Recovery Manager (RMAN) is used to convert the necessary data files of the database if the target platform is different and has different endian format

A . Out-of-profile packets are queued. B . It causes TCP retransmits. C . Marking/remarking is not supported. D . It does not respond to BECN and ForeSight Messages. E . It uses a single/two-bucket mechanism for metering.

A . Clearing an alert sends the alert to the alert history. B . Response actions cannot be specified with server-generated alerts. C . The nonthreshold alerts appear in the DBA_OUTSTANDING_ALERTS view. D . Server-generated alerts notify the problems that cannot be resolved automatically and requireadministrators to be notified.

A . Classifying and marking traffic should be done as close to the traffic source as possible.  B . Classifying and marking traffic should be done at the distribution layer. C . Traffic is classified and marked as it travels through the network. D . If untrusted traffic enters a switch， it can be marked with a new QoS value appropriate for the policy in place. E . The trust boundary moves depending on the type of traffic entering the network.

A . The checkpoint frequency decreases with the smaller redo log file size. B . It ensures that all committed data is written to the data files during normal shutdown. C . The frequent full checkpoint in a database can cause the overall degradation of the database performance. D . It prompts the Checkpoint （CKPT） process to write data to the data files and redo information to the online redo log files.

A . Voice VLANs are only used when connecting an IP phone and a host to distinct switch ports B . Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phones C . Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phone D . Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration command E . Voice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the port F . Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS marking

A . The UNIQUE constraint does not permit a null value for the column. B . A UNIQUE index gets created for columns with PRIMARY KEY and UNIQUE constraints. C . The PRIMARY KEY and FOREIGN KEY constraints create a UNIQUE index. D . The NOT NULL constraint ensures that null values are not permitted for the column.

A .  Zoning increases security. B .  DNS queries are used for software zoning. C .  Software zoning is more secure than hardware zoning. D .  When using zones and VSANs together， the zone is created first. E .  Zoning requires that VSANs be established before it becomes operational.

A . Views can be created as read only. B . Views are data segments like tables. C . Views can be created on the basis of more than one table. D . Data manipulation language （DML） operations cannot be performed on views.

A . You use a NEXTVAL pseudo column to look at the next possible value that would be generated from a sequence, without actually retrieving the value. B . You use a CURRVAL pseudo column to look at the current value just generated from a sequence, without affecting the further values to be generated from the sequence. C . You use a NEXTVAL pseudo column to obtain the next possible value from a sequence by actually retrieving the value from the sequence. D . You use a CURRVAL pseudo column to generate a value from a sequence that would be used for a specified database column. E . If a sequence starting from a value 100 and incremented by 1 is used by more then one application, then all of these applications could have a value of 105 assigned to their column whose value is being generated by the sequence. F . You use REUSE clause when creating a sequence to restart the sequence once it generates the maximum value defined for the sequence.

A . A view can be created as read only. B . A view can be created as a join on two or more tables. C . A view cannot have an ORDER BY clause in the SELECT statement. D . A view cannot be created with a GROUP BY clause in the SELECT statement. E . A view must have aliases defined for the column names in the SELECT statement.

A . RED randomly drops packets before the queue becomes full. B . RED is always useful，without dependency on flow. C . RED increases the drop rate as the average queue size increases. D . RED has a per-flow intelligence.

A . There is a full mesh of pseudowires. B . There is a partial mesh of pseudowires. C . Only L2TPv3 can be used for pseudowire establishment. D . There is split-horizon to avoid loops.

A . EIGRP supports VLSM， route summarization， and routing update authentication. B . If the feasible successor has a higher advertised distance than the successor route， it becomes the primary route. C . Passive routes are in the process of being calculated by DUAL. D . EIGRP exchanges full routing table information with neighboring routers with every update. 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 . CAC is implemented in the call setup phase to allocate bandwidth resources B . CAC is implemented in the call maintenance phase to allocate bandwidth resources C . CAC is utilized during the call teardown phase to ensure that all resources have been released D . CAC uses the Cisco RSVP （Resource Reservation Protocol） Agent to integrate call-processing capabilities with the underlying network infrastructure E . CAC is implemented in the call setup phase to determine the destination of the call