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Which two are true about aggregate functions?（）A、You can use aggregate functions in any clause of a SELECT statement.B、You can use aggregate functions only in the column list of the select clause and in the WHERE clause of a SELECT statement.C、You can mix

题目

Which two are true about aggregate functions?（）

  • A、You can use aggregate functions in any clause of a SELECT statement.
  • B、You can use aggregate functions only in the column list of the select clause and in the WHERE clause of a SELECT statement.
  • C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.
  • D、You can pass column names, expressions, constants, or functions as parameter to an aggregate function.
  • E、You can use aggregate functions on a table, only by grouping the whole table as one single group.
  • F、You cannot group the rows of a table by more than one column while using aggregate functions.
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更多“Which two are true about aggrega”相关问题

  • 第1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2题：

    Which statement about Belgium is NOT true?

    A.it is twice as big as Beijing.
    B.it has two major ethnic groups.
    C.it has gone through quite a few threats of division.
    D.it has no government.

    答案：D
    解析：

  • 第3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 statement about WSA user authentication is true？（） 

    • A、 a single WSA can have multiple LDAP realms
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    • C、 WSA supports NTLM but not LDAP
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    正确答案:A

  • 第6题：

    Which two statements about OSPF IPv6 routing are true？（）

    • A、It requires OSPF version 3.
    • B、automatically detects neighbors over NHMA interfaces
    • C、It supports encryption using
    • D、It uses LSA type 9
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    正确答案:A,E

  • 第7题：

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    • B、It can be used independently of the getRemoteUser method.
    • C、Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
    • D、Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.

    正确答案:B,C

  • 第8题：

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

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    • B、A lower number is preferred.
    • C、A higher number is preferred.
    • D、100 is the default precedence.

    正确答案:B,D

  • 第9题：

    多选题
    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： B,D
    解析： 暂无解析

  • 第10题：

    多选题
    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


    正确答案： D,C
    解析： 暂无解析

  • 第11题：

    多选题
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    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.


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    解析： 暂无解析

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  • 第14题：

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    • 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15题：

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

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    正确答案:A,B

  • 第16题：

    Which statement is true about the digital to analog conversion process？（）

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    • B、the two steps of digital to analog conversion are decoding and filtering
    • C、the two steps of digital to analog conversion are decompression and filtering of the analog signal
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    • D、There is split-horizon to avoid loops.

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  • 第18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.

    正确答案:B,C

  • 第19题：

    Which two statements about creating constraints are true?（）

    • A、Constraint names must start with SYS_C
    • B、All constraints must be defines at the column level
    • C、Constraints can be created after the table is created
    • D、Constraints can be created at the same time the table is created
    • E、Information about constraints is found in the VIEW_CONSTRAINTS dictionary view

    正确答案:C,D

  • 第20题：

    单选题
    Which statement is true about the digital to analog conversion process？（）
    A

    the two steps of digital to analog conversion are decompression and reconstruction of the analog signal

    B

    the two steps of digital to analog conversion are decoding and filtering

    C

    the two steps of digital to analog conversion are decompression and filtering of the analog signal

    D

    the two steps of digital to analog conversion are quantization and decoding


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements about creating constraints are true?（）
    A

    Constraint names must start with SYS_C

    B

    All constraints must be defines at the column level

    C

    Constraints can be created after the table is created

    D

    Constraints can be created at the same time the table is created

    E

    Information about constraints is found in the VIEW_CONSTRAINTS dictionary view


    正确答案： E,D
    解析： 暂无解析

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