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Which two statements are true about simple views？（）

题目
多选题
Which two statements are true about simple views？（）
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.

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相似问题和答案

第1题：

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 of the following statements about teachers' instructions is NOT true?

A．Instructions should be simple and clear.
B．Instructions can be long and complicated for students to follow.
C．Teachers can use body language to assist students to understand.
D．Instructions should be kept to a minimum during activities.

答案：B
解析：
考查课堂教学中的教师指令语。教师的课堂指令语应简洁明了，这样学生才会明白；切忌长而复杂．这样不便于学生理解，也会影响教学的效率。教师在课堂上应尽量少用母语，必要时可以使用身体语言辅助学生理解。课堂指令语不应过多，教师应最大限度地发挥学生的主观能动性。故选B。

第3题：

The RECYCLEBIN parameter is set to ON for your database. You drop a table, PRODUCTS, from the SCOTT schema.Which two statements are true regarding the outcome of this action? ()(Choose two)

A. All the related indexes and views are automatically dropped

B. The flashback drop feature can recover only the table structure

C. Only the related indexes are dropped whereas views are invalidated

D. The flashback drop feature can recover both the table structure and its data


参考答案：C, D

第4题：

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

  • A、It performs switching decisions and forwarding for the VEM
  • B、It can be run on a virtual machine
  • C、It can be used for remote VEM switching Iine cards

正确答案:B,C

第5题：

Which two statements about views are true? （）

  • 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.

正确答案:A,B

第6题：

Which two statements are true about precedence values in policy?() (Choose two.)

A. 1 is the default precedence.

B. A lower number is preferred.

C. A higher number is preferred.

D. 100 is the default precedence.


参考答案：B, D

第7题：

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

  • A、Traffic is clear text
  • B、Traffic is encrypted 
  • C、They are initiated by the LNS
  • D、They are initiated by the LAC

正确答案:A,D

第8题：

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.

D. It supports the junos-global configuration option.


参考答案：B, C

第9题：

Which two statements are true about traffic shaping？（）

  • 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.

正确答案:A,C

第10题：

Which two statements about VPLS are true？ （）

  • 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.

正确答案:A,D

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