单选题In which scenario would index be most useful? （）A The indexed column is declared as NOT NULL.B The indexed columns are used in the FROM clause.C The indexed columns are part of an expression.D The indexed column contains a wide range of values.

题目
单选题
In which scenario would index be most useful? （）
A

The indexed column is declared as NOT NULL.

B

The indexed columns are used in the FROM clause.

C

The indexed columns are part of an expression.

D

The indexed column contains a wide range of values.

相似考题

1.Which of the following diagrams is most useful in impact analysis:A arrow diagramsB precedence diagramsC decision treesD Pareto diagramsE cause and effects diagrams

2.In which scenario would index be most useful? ()A. The indexed column is declared as NOT NULL.B. The indexed columns are used in the FROM clause.C. The indexed columns are part of an expression.D. The indexed column contains a wide range of values.

3.A user in the accounting department reports that their office is able to connect to the network, butthey are unable to connect to the Internet.Which of the following documentation would be the MOST useful to the administrator in diagnosing this issue?（） (Select TWO).A. Physical network diagramB. Job logC. Acceptable use policyD. Baseline documentationE. Wiring schematic

4.In which scenario would TOP N analysis be the best solution? ()A. You want to identify the most senior employee in the company.B. You want to find the manager supervising the largest number of employees.C. You want to identify the person who makes the highest salary for all employees.D. You want to rank the top three sales representatives who have sold the maximum number of products.

更多“In which scenario would index be most useful? （）”相关问题

  • 第1题：

    Which of the following devices would MOST likely integrate a DHCP server?()

    A.Router

    B.Hub

    C.Switch

    D.Bridge


    参考答案：A

  • 第2题：

    A foam-type portable fire extinguisher would be most useful in combating a fire in ______.

    A.solid materials such as wood or bales of fiber

    B.flammable liquids

    C.a piece of electrical equipment

    D.combustible metallic solid


    正确答案：B
    便携式泡沫灭火器对扑灭可燃液体着火最有效。

  • 第3题：

    In which scenario would an index be most useful?（）

    • A、The indexed column is declared as NOT NULL.
    • B、The indexed columns are used in the FROM clause.
    • C、The indexed columns are part of an expression.
    • D、The indexed column contains a wide range of values.

    正确答案:D

  • 第4题：

    A user in the accounting department reports that their office is able to connect to the network, but they are unable to connect to the Internet. Which of the following documentation would be the MOST useful to the administrator in diagnosing this issue?（） (Select TWO).

    • A、Physical network diagram
    • B、Job log
    • C、Acceptable use policy
    • D、Baseline documentation
    • E、Wiring schematic

    正确答案:A,E

  • 第5题：

    Which of the following devices would MOST likely integrate a DHCP server?（）

    • A、Router
    • B、Hub
    • C、Switch
    • D、Bridge

    正确答案:A

  • 第6题：

    Evaluate the CREATE TABLE statement：   CREATE TABLE products   （product_id NUMBER （6）  CONSTRAINT prod_id_pk PRIMARY KEY，  product_name VARCHAR2 （15））；   Which statement is true regarding the PROD_ID_PK constraint？（）

    • A、 It would be created only if a unique index is manually created first.
    • B、 It would be created and would use an automatically created unique index.
    • C、 It would be created and would use an automatically created nonunique index.
    • D、 It would be created and remains in a disabled state because no index is specified in the command.

    正确答案:B

  • 第7题：

    单选题
    A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
    A

    generators

    B

    oil drums

    C

    the bridge controls

    D

    combustible metals


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    A foam-type portable fire extinguisher would be most useful in combating a fire in（）.
    A

    soild materials such as wood or bales of fiber

    B

    flammable liquids

    C

    a piece of electrical equipment

    D

    combustible metallic solids


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    In which scenario would TOP N analysis be the best solution? （）
    A

    You want to identify the most senior employee in the company.

    B

    You want to find the manager supervising the largest number of employees.

    C

    You want to identify the person who makes the highest salary for all employees.

    D

    You want to rank the top three sales representatives who have sold the maximum number of products.


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    In which scenario would an index be most useful?（）
    A

    The indexed column is declared as NOT NULL.

    B

    The indexed columns are used in the FROM clause.

    C

    The indexed columns are part of an expression.

    D

    The indexed column contains a wide range of values.


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    A system administrator is trying to troubleshoot company wide email problems that may be related to DNS.  Which of the following network tools would be MOST useful to determine if it is a DNS issue？（）
    A

    netstat

    B

    tracert

    C

    nslookup

    D

    ping


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
    A

    generators

    B

    oil drums

    C

    the bridge

    D

    combustible metals


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Based on what you know of the job market，which of your courses were the most useful？The least？


    正确答案：
             

  • 第14题：

    A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.

    A.generators

    B.oil drums

    C.the bridge controls

    D.combustible metals


    正确答案：B
    便携式泡沫储备气压式灭火器最适宜扑灭油桶火。

  • 第15题：

    Which of the following is MOST useful in HVAC planning？ （）

    • A、 Uninterruptible Power Supply （UPS） load
    • B、 Humidity
    • C、 Amperage
    • D、 Voltage
    • E、 Temperature

    正确答案:B,E

  • 第16题：

    A Stateful firewall is MOST useful in protecting against which of the following network scans?（）

    • A、PING
    • B、UDP
    • C、Xmas
    • D、ACK

    正确答案:C

  • 第17题：

    Which of the following commands is most useful in initially collecting data to determine a network performance problem？（）

    • A、 ping
    • B、 trace
    • C、 ifconfig
    • D、 lsattr

    正确答案:A

  • 第18题：

    The rows inside three Oracle tables supporting a customer order entry system are frequently accessed together by means of a table join. Because data is always being added to the tables, you leave a lot of extra space inside each block to accommodate growth. Which of the following types of tables would be useful for storing the data in this context?（）

    • A、Temporary tables 
    • B、Index-organized tables 
    • C、Cluster tables 
    • D、Standard Oracle tables 

    正确答案:D

  • 第19题：

    多选题
    In which scenarios would you rebuild an index？（）
    A

    when you need to disable the index usage

    B

    when you need to change storage options

    C

    when you need to enable index monitoring

    D

    when you need to move the index to another tablespace


    正确答案： D,B
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following commands is most useful in initially collecting data to determine a network performance problem？（）
    A

     ping

    B

     trace

    C

     ifconfig

    D

     lsattr


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Evaluate the CREATE TABLE statement：   CREATE TABLE products   （product_id NUMBER （6）  CONSTRAINT prod_id_pk PRIMARY KEY，  product_name VARCHAR2 （15））；   Which statement is true regarding the PROD_ID_PK constraint？（）
    A

     It would be created only if a unique index is manually created first.

    B

     It would be created and would use an automatically created unique index.

    C

     It would be created and would use an automatically created nonunique index.

    D

     It would be created and remains in a disabled state because no index is specified in the command.


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    The hydraulic oil most likely to thin out when hot and thick when cold would have a viscosity index of（）
    A

    20

    B

    40

    C

    60

    D

    80


    正确答案： B
    解析： 暂无解析

  • 第23题：

    多选题
    A user in the accounting department reports that their office is able to connect to the network, but they are unable to connect to the Internet. Which of the following documentation would be the MOST useful to the administrator in diagnosing this issue?（） (Select TWO).
    A

    Physical network diagram

    B

    Job log

    C

    Acceptable use policy

    D

    Baseline documentation

    E

    Wiring schematic


    正确答案： C,B
    解析： 暂无解析

  • 第24题：

    问答题
    Practice 7　　● Your company has planned three training courses：Foreign Language Development, Changes in Technology, Management Skills.　　● You have been asked to write a report, recommending the course you think would be most useful for people who do the same kind of job as you.　　● Write the report, saying which course you have chosen.　　● Explain why you feel it would be the most useful and why the others are not so suitable.　　● Write 200-250 words on your Answer Sheet．

    正确答案： 【参考范文】
    To: Mr. Walker, Human Resources Director
    From: Zhang Gao, Translating Coordinator
    Date: May 16, 2012
    Subject: Management Skills Most Suitable for Foreign Language Translators
    The Company has planned three training courses for all foreign language translators for the next three months and I have been required to recommend one course as being the most suitable.
    The three courses from which a choice may be made are as follows:
    (i)English Language Development; (ii) Changes in Technology; (iii) Management Skills.
    All translators in the Company have college degrees in English Language and a lot of colleagues in our field have postgraduate qualifications in Translation or Linguistics. Since English Language Training Course of the Company is only to Diploma level and contains nothing new to us, it is not useful for us and is best left to other colleagues.
    Two months ago all Company’s translators finished an excellent “Changes in Technology” course, which brought us up-to-date information on use of machine translating and personal computers. Obviously, there is no need for us to attend the “Changes in Technology” course again.
    Undoubtedly the “Management Skills” course is the best choice for the Company’s translators. Recently it has been announced that next year our department will be divided into four sections, each of which will serve a specific division of a much-expanded Company. We will recruit twenty new English Language graduates as new translators, five to each section. We four existing translators will be promoted as Heads of Section.
    All four of us are shortage of management skills and, when we manage our own sections, such skills will be indispensable. As a result, I will recommend without hesitation that all translators be enrolled for the “Management Skills” training course.
    解析： 暂无解析

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