多选题Which three statements about subqueries are true? （）AAsinglerowsubquerycanretrieveonlyonecolumnandonerow.BAsinglerowsubquerycanretrieveonlyonerowbutmanycolumns.CAmultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.DAmultiplerowsubquerycanbecom

题目
多选题
Which three statements about subqueries are true? （）
A

Asinglerowsubquerycanretrieveonlyonecolumnandonerow.

B

Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.

C

Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.

D

Amultiplerowsubquerycanbecomparedusingthe；>；；operator.

E

AsinglerowsubquerycanusetheINoperator.

F

Amultiplerowsubquerycanusethe；=；operator.

相似考题

1.Which of these statements is true about ssids configured in cisco adu？（）A、ssids are not case-sensitive.B、ssids must be listed in the same order in the adu as they are in the access point.C、a maximum of three ssids may be configured.D、ssids may have a maximum of 16 characters.

2.Which three statements are true about terms in a policy?（）A、The order of the terms in a policy is irrelevantB、The action is specified in a then statementC、Ters are optional in a policyD、The match condition can be identified with a from statementE、Every policy must contain at least one term

3.Which three statements are true regarding subqueries?（）A、Subqueries can contain GROUP BY and ORDER BY clauses B、Main query and subquery can get data from different tables C、Main query and subquery must get data from the same tables D、Subqueries can contain ORDER BY but not the GROUP BY clause E、Only one column or expression can be compared between the main query and subqueryF、 Multiple columns or expressions can be compared between the main query and subquery

4.Which three statements about Label-Switched Paths （LSPs） are true？ （）A、 LSPs are bidirectional.B、 LSPs are unidirectional.C、 LSPs can be signaled by CAC.D、 LSPs can be configured explicitly.E、 LSPs can be configured dynamically.

参考答案和解析
正确答案： B,E
解析： 暂无解析
更多“多选题Which three statements about subqueries are true? （）AAsinglerowsubquerycanretrieveonlyonecolumnandonerow.BAsinglerowsubquerycanretrieveonlyonerowbutmanycolumns.CAmultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.DAmultiplerowsubquerycanbecom”相关问题

  • 第1题：

    Which three statements are true about Source Specific Multicast？（）

    • A、Is best suited for applications that are in the one-to-many category.
    • B、SSM uses shortest path trees only.
    • C、The use of SSM is recommended when there are many sources and it is desirable to keep the amount of mroute state in the routers in the network to a.
    • D、There are no RPs to worry about.

    正确答案:A,B,D

  • 第2题：

    Which two statements about subqueries are true? （）

    • A、A subquery should retrieve only one row.
    • B、A subquery can retrieve zero or more rows.
    • C、A subquery can be used only in SQL query statements.
    • D、Subqueries CANNOT be nested by more than two levels.
    • E、A subquery CANNOT be used in an SQL query statement that uses group functions.
    • F、When a subquery is used with an inequality comparison operator in the outer SQL statement, the column list in the SELECT clause of the subquery should contain only one column.

    正确答案:B,F

  • 第3题：

    Which three statements about subqueries are true?（）

    • A、A single row subquery can retrieve only one column and one row.
    • B、A single row subquery can retrieve only one row but many columns.
    • C、A multiple row subquery can retrieve multiple rows and multiple columns.
    • D、A multiple row subquery can be compared by using the ">" operator.
    • E、A single row subquery can use the IN operator.
    • F、A multiple row subquery can use the "=" operator.

    正确答案:B,C,D

  • 第4题：

    Which three statements about subqueries are true? （）

    • A、Asinglerowsubquerycanretrieveonlyonecolumnandonerow.
    • B、Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.
    • C、Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.
    • D、Amultiplerowsubquerycanbecomparedusingthe"；>；"；operator.
    • E、AsinglerowsubquerycanusetheINoperator.
    • F、Amultiplerowsubquerycanusethe"；="；operator.

    正确答案:B,C,E

  • 第5题：

    多选题
    Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)
    A

    It detects changes in SQL execution plans.

    B

    It produces results that can be used to create the SQL plan baseline.

    C

    The importance of SQL statements is based on the size of the objects accessed.

    D

    It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.

    E

    It shows only the overall impact on workload and not the net SQL impact on workload.


    正确答案： B,E
    解析： 暂无解析

  • 第6题：

    多选题
    Which three statements are true about the privileged connection options available in Oracle9i？（）
    A

    The CONNECT INTERNAL is disallowed.

    B

    The Server Manager tool is no longer supplied.

    C

    The listener must be running to make a connection.

    D

    The use of remote password login file (orapw<sid>) is unchanged.


    正确答案： A,B,C
    解析： 暂无解析

  • 第7题：

    多选题
    Which three statements are true about persistent configuration?（） (Choose three.)
    A

    A user cannot set privileges on the persistent lightweight jobs

    B

    Persistent lightweight jobs generate a large amount of metadata

    C

    It is possible to create fully self-contained persistent lightweight jobs

    D

    The use of a template is mandatory to create persistent lightweight jobs

    E

    Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time


    正确答案： D,A
    解析： 暂无解析

  • 第8题：

    多选题
    Which three statements are true about windows? （）(Choose three.)
    A

    Only one window can be open at any given time

    B

    Consumer groups are associated with windows

    C

    Windows work with job classes to control resource allocation

    D

    The database service name must be provided during windows creation

    E

    Windows can automatically start job or change resource allocation among jobs for various time periods.


    正确答案： E,A
    解析： 暂无解析

  • 第9题：

    多选题
    Which three statements about NetFlow are true？（）
    A

    NetFlow records unidirectional IP traffic flow.

    B

    NetFlow records MPLS frame flow.

    C

    NetFlow expert is only over TCP.

    D

    NetFlow records is only over UDP.

    E

    NetFlow records subinterface information of traffic flow.


    正确答案： B,D
    解析： 暂无解析

  • 第10题：

    多选题
    Which three statements about Label-Switched Paths （LSPs） are true？ （）
    A

    LSPs are bidirectional.

    B

    LSPs are unidirectional.

    C

    LSPs can be signaled by CAC.

    D

    LSPs can be configured explicitly.

    E

    LSPs can be configured dynamically.


    正确答案： E,A
    解析： 暂无解析

  • 第11题：

    多选题
    Which three are true about MPLS LSP establishment using RSVP?（） (Choose three.)
    A

    Ordered Control

    B

    Independent Control

    C

    Down Stream Unsolicited

    D

    Liberal Label Management

    E

    Down Stream On Demand


    正确答案： E,D
    解析： 暂无解析

  • 第12题：

    多选题
    Which three statements about MPLS traffic engineering （MPLS TE） are true？ （）
    A

    MPLS TE supports admission control

    B

    MPLS TE tunnel traffic is a link attribute to compute the TE tunnel path

    C

    MPLS TE uses BGP extension to advertise link attributes

    D

    MPLS TE provides protection capability

    E

    MPLS TE uses RSVP to establish LSP


    正确答案： C,B
    解析： 暂无解析

  • 第13题：

    Which three statements are true about terms in a policy?（）

    • A、The order of the terms in a policy is irrelevant.
    • B、The action is specified in a then statement.
    • C、Terms are optional in a policy.
    • D、The match condition can be identified with a from statement.
    • E、A from statement is mandatory in a term.

    正确答案:B,C,D

  • 第14题：

    Which three statements about subqueries are true? （）

    • A、A main query can have more than one subquery.
    • B、A subquery can have more than one main query.
    • C、The subquery and main query must retrieve data from the same table.
    • D、The subquery and main query can retrieve data from different tables.
    • E、Only one column or expression can be compared between the subquery and main query.
    • F、Multiple columns or expression can be compared between the subquery and main query.

    正确答案:A,C,E

  • 第15题：

    Which two statements are true regarding subqueries? （）

    • A、A subquery can retrieve zero or more rows 
    • B、Only two subqueries can be placed atone level 
    • C、A subquery can be used only in SQL query statements 
    • D、A subquery can appear on either side of a comparison operator 
    • E、There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement 

    正确答案:A,D

  • 第16题：

    多选题
    Which three statements about subqueries are true?（）
    A

    A single row subquery can retrieve only one column and one row.

    B

    A single row subquery can retrieve only one row but many columns.

    C

    A multiple row subquery can retrieve multiple rows and multiple columns.

    D

    A multiple row subquery can be compared by using the “>” operator.

    E

    A single row subquery can use the IN operator.

    F

    A multiple row subquery can use the “=” operator.


    正确答案： A,D
    解析： 暂无解析

  • 第17题：

    多选题
    Which two statements are true regarding subqueries? （）
    A

    A subquery can retrieve zero or more rows

    B

    Only two subqueries can be placed atone level

    C

    A subquery can be used only in SQL query statements

    D

    A subquery can appear on either side of a comparison operator

    E

    There is no limit on the number of subquery levels in the WHERE clause of a SELECT statement


    正确答案： E,B
    解析： 暂无解析

  • 第18题：

    多选题
    Which three statements are true about terms in a policy?（）
    A

    The order of the terms in a policy is irrelevant

    B

    The action is specified in a then statement

    C

    Ters are optional in a policy

    D

    The match condition can be identified with a from statement

    E

    Every policy must contain at least one term


    正确答案： C,D
    解析： 暂无解析

  • 第19题：

    多选题
    Which three statements about subqueries are true? （）
    A

    A main query can have more than one subquery.

    B

    A subquery can have more than one main query.

    C

    The subquery and main query must retrieve data from the same table.

    D

    The subquery and main query can retrieve data from different tables.

    E

    Only one column or expression can be compared between the subquery and main query.

    F

    Multiple columns or expression can be compared between the subquery and main query.


    正确答案： C,D
    解析： 暂无解析

  • 第20题：

    多选题
    Which three characteristics are true about voice traffic in the campus network？ （）
    A

    TCP retransmits

    B

    benign

    C

    greedy

    D

    drop sensitive

    E

    smooth

    F

    delay insensitive


    正确答案： B,D,E
    解析： 暂无解析

  • 第21题：

    多选题
    Which three statements are true about terms in a policy?（）
    A

    The order of the terms in a policy is irrelevant.

    B

    The action is specified in a then statement.

    C

    Terms are optional in a policy.

    D

    The match condition can be identified with a from statement.

    E

    A from statement is mandatory in a term.


    正确答案： B,E
    解析： 暂无解析

  • 第22题：

    多选题
    Which three statements are true regarding subqueries?（）
    A

    Subqueries can contain GROUP BY and ORDER BY clauses

    B

    Main query and subquery can get data from different tables

    C

    Main query and subquery must get data from the same tables

    D

    Subqueries can contain ORDER BY but not the GROUP BY clause

    E

    Only one column or expression can be compared between the main query and subquery

    F

    Multiple columns or expressions can be compared between the main query and subquery


    正确答案： B,D
    解析： 暂无解析

  • 第23题：

    多选题
    Which three statements are true about Source Specific Multicast？（）
    A

    Is best suited for applications that are in the one-to-many category.

    B

    SSM uses shortest path trees only.

    C

    The use of SSM is recommended when there are many sources and it is desirable to keep the amount of mroute state in the routers in the network to a.

    D

    There are no RPs to worry about.


    正确答案： C,A
    解析： 暂无解析

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