单选题If you want to know about programmes of next week, which channel will you choose?A Channel 1.B Channel 2.C Both of them.

第1题：

第2题：

Which two statements about SAN port channels configured on Cisco Nexus 5000 Series switches are true？ （）  

• A、 The bring up protocol automatically detects and overrides any misconfiguration.
• B、 You can manually configure channel groups， or they can be automatically created.
• C、 Changes in configuration to the SAN port channel interface must also be made to all members of the channel group.
• D、 The port channel protocol uses the exchange fabric parameters command to communicate across peer ports in an ISL.
• E、 The port channel protocol ensures that a set of ports is eligible to be part of the same SAN port channel.

第3题：

第4题：

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for the RMAN. To accomplish the backup， you issued the following RMAN command：   RMAN> BACKUP SECTION SIZE 300M TABLESPACE users；   Which two statements are true regarding the execution of the above command？（）

• A、 The RMAN parallelizes the backup although the parallelism is not set for a channel.
• B、 The backup piece size will be limited to 300 MB.
• C、 The operation is accomplished using the default channel available.
• D、 Three channels for the tape drive must be configured by setting the parallelism to three.

第5题：

A customer is ready to order a pSeries solution.  However， the pSeries technical specialist is unsure whether the customer preferred the fibre channel or the external SCSI disk attachment option.  What is the most appropriate action for the specialist to take next？（）

• A、Ask the customer to confirm which option is best for their environment.
• B、Order the fibre channel option and purchase a converter later if necessary.
• C、Order both SCSI and fibre channel adapters to cover both potential options.
• D、Inform the customer that fibre channel was selected for performance reasons.

第6题：

第7题：

Which statement about SAN port channels configured on Cisco Nexus 5000 Series Switches is true？（）  

• A、 A single SAN port channel can have both Fibre Channel and virtual Fibre Channel interfaces. 
• B、 SAN port channels can include up to 16 interfaces.
• C、 SAN port channels distribute traffic across all links in the port channel when source ID and destination ID load balancing are used.
• D、 The links in SAN port channels can be connected to different sets of switches.
• E、 The On mode of operation means ports only operate as part of a SAN port channel or remain inactive.

第8题：

第9题：

You want to take the backup of the USERS tablespace. It has a single data file of 900 MB. You have tape drives of 300 MB each. The SBT channel is configured for Recovery Manager (RMAN). To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Which two statements are true about the execution of the above command? （）(Choose two.)

• A、The backup piece size will be limited to 300 MB
• B、The RMAN uses multiplexing to perform backup
• C、The operation is accomplished using the default channel available
• D、The RMAN parallelizes the backup although the parallelism is not set for a channel

第10题：

You want to take a complete database backup using RMAN. The backup should consist only the used blocks from your database. Which two statements are true about this backup operation? （）(Choose two.)

• A、Backup compression should be enabled
• B、Parallelism for the channel should be set to 2
• C、All the files must be backed up as backup sets
• D、The backup may be stored either on disk or on media with media manager