多选题Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)AIt's only supported for the backups performed on the tapeBIt is not supported for backup operations that produce image copiesCDuplex backups need a parallel

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多选题

Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)

It's only supported for the backups performed on the tape

It is not supported for backup operations that produce image copies

Duplex backups need a parallelism for the device to be equal to number of copies

Duplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously

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Which two statements are true about AH?() (Choose two.)

A. AH provides data integrity.

B. AH is identified by IP protocol 50.

C. AH is identified by IP protocol 51.

D. AH cannot work in conjunction with ESP

参考答案：A, C

第2题：

Which two statements about VACLs on Cisco Nexus 7000 Series Switches are true？（）

A、 A single VACL can be shared across two or more VDCs.
B、 Use of VACLs requires no special license to be installed.
C、 VACLs make use of IP or MAC ACLs.
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正确答案:B,C

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The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command?()

A. The job is enabled by default after creation

B. The job is automatically dropped after the end date

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参考答案：B, C

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Which two statements about static NAT translations are true?（）

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正确答案:A,B

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Which two statements are true about traffic shaping？（）

A、Out-of-profile packets are queued.
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Which two statements are true about precedence values in policy?() (Choose two.)

A. 1 is the default precedence.

B. A lower number is preferred.

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Which two statements are true about L2TP tunnels?（） (Choose two.)

A、Traffic is clear text
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正确答案:A,D

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Which two statements are true about pool－based source NAT? ()(Choose two.)

A. PAT is not supported.

B. PAT is enabled by default.

C. It supports the address-persistent configuration option.

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参考答案：B, C

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Which two statements about the Cisco Nexus 1000V VSM are true?（）

A、It performs switching decisions and forwarding for the VEM
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Which two statements about OSPF IPv6 routing are true？（）

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Which two statements are true about the duplexing of the bac

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