参考答案和解析
正确答案:D
更多“Which keyword is used with the s”相关问题
  • 第1题:

    Which of the following encryption methods is often used along with L2TP?()

    • A、S/MIME
    • B、SSH
    • C、3DES
    • D、IPSec

    正确答案:D

  • 第2题:

    Which of the following commands should be used to monitor the number of threads on the scheduler’s run queue for any given interval?()

    • A、 sar
    • B、 pstat
    • C、 iostat
    • D、 filemon

    正确答案:A

  • 第3题:

    Which statements describe the capabilities of the DBMS_NETWORK_ACL_ADMIN package?()

    • A、It can be used to allow the access privilege settings for users but not roles.
    • B、It can be used to allow the access privilege settings for users as well as roles.
    • C、It can be used to control the time interval for which the access privilege is available to a user.
    • D、It can be used to selectively restrict the access for each user in a database to different host computers.
    • E、It can be used to selectively restrict a user's access to different applications in a specific host computer.

    正确答案:B,C,D

  • 第4题:

    Which four statements are true?()

    • A、Has-a relationships should never be encapsulated.
    • B、Has-a relationships should be implemented using inheritance.
    • C、Has-a relationships can be implemented using instance variables.
    • D、Is-a relationships can be implemented using the extends keyword.
    • E、Is-a relationships can be implemented using the implements keyword.
    • F、An array or a collection can be used to implement a one-to-many has-a relationship.

    正确答案:C,D,E,F

  • 第5题:

    单选题
    Which one of the following RMAN commands is used to register the database files with repository that were backed up using O/S commands?()
    A

    CHANGE

    B

    CATALOG

    C

    CROSSCHECK

    D

    SWITCH


    正确答案: B
    解析: 暂无解析

  • 第6题:

    多选题
    Process EIGRP 1 is redistributing routes from process OSPF 2. Which two of the following methods may be used to set the metrics of the redistributed routes?()
    A

    Let the metrics default.

    B

    Set the metric components using the redistri bute command's metric keyword.

    C

    Set the metric components using the default - metric router subcommand.

    D

    Set the integer (composite) metric using the redistribute command's metric keyword.


    正确答案: D,A
    解析: 暂无解析

  • 第7题:

    多选题
    Which four statements are true?()
    A

    Has-a relationships should never be encapsulated.

    B

    Has-a relationships should be implemented using inheritance.

    C

    Has-a relationships can be implemented using instance variables.

    D

    Is-a relationships can be implemented using the extends keyword.

    E

    Is-a relationships can be implemented using the implements keyword.

    F

    An array or a collection can be used to implement a one-to-many has-a relationship.


    正确答案: D,A
    解析: 暂无解析

  • 第8题:

    问答题
    In an ACL cause, what’s the function of log or log-input keyword at the end?

    正确答案: Enable logging information of packets which match the ACL entriy with log or log-input keyword.
    Log
    Log is an optional specification that turns on informational logging. The logging information the router generate includes the access list number or name, source and destination address, protocol, upper layer port number, and number of packets logged.
    Log-input
    Log-input adds the input interface and source MAC address or virtual circuit number to the log output.
    解析: 暂无解析

  • 第9题:

    单选题
    Which keyword can protect a class in a package from accessibility by the classes outside the package()。
    A

    private

    B

    protected

    C

    final

    D

    don’t use any keyword at all (make it default)


    正确答案: C
    解析: 暂无解析

  • 第10题:

    单选题
    It is worthwhile to study the various ways in which Shakespeare used English because _____.
    A

    English words have changed a lot since Shakespeare’s time

    B

    by doing so one can be fully aware of the richness of the English language

    C

    English words are now being used in the same way as in Shakespeare’s days

    D

    of none of the above


    正确答案: A
    解析:
    细节题。由“There is probably no better way for a foreigner to appreciate the richness and variety of the English language than by studying the various ways in which Shakespeare used it.”可知,正确答案应为B项。

  • 第11题:

    单选题
    Which keyword is used with the show ip bgp neighbors [keyword] command to display all routes that are received and accepted from a neighbor?()
    A

    paths

    B

    accepted-routes

    C

    advertised-routes

    D

    routes


    正确答案: A
    解析: 暂无解析

  • 第12题:

    多选题
    Which four are true?()
    A

    Has-a relationships should never be encapsulated.

    B

    Has-a relationships should be implemented using inheritance.

    C

    Has-a relationships can be implemented using instance variables.

    D

    Is-a relationships can be implemented using the extends keyword.

    E

    Is-a relationships can be implemented using the implements keyword.

    F

    An array or a collection can be used to implement a one-to-many has-a relationship.

    G

    The relationship between Movie and Actress is an example of an is-a relationship.


    正确答案: D,A
    解析: 暂无解析

  • 第13题:

    Which of the following commands would be used to display hidden files?()

    • A、dir /?
    • B、dir /d
    • C、dir /a
    • D、dir /s

    正确答案:C

  • 第14题:

    Which four are true?()

    • A、 Has-a relationships should never be encapsulated.
    • B、 Has-a relationships should be implemented using inheritance.
    • C、 Has-a relationships can be implemented using instance variables.
    • D、 Is-a relationships can be implemented using the extends keyword.
    • E、 Is-a relationships can be implemented using the implements keyword.
    • F、 An array or a collection can be used to implement a one-to-many has-a relationship.
    • G、 The relationship between Movie and Actress is an example of an is-a relationship.

    正确答案:C,D,E,F

  • 第15题:

    Which statement is true regarding remote archive log file destinations?()

    • A、Only two destinations per remote database can be specified.
    • B、Destination is an Oracle Net alias specified by using the SERVICE keyword.
    • C、The REOPEN attribute must be used when using remote archive log file destinations.
    • D、The service name is resolved by searching sqlnet.ora file for the remote database name.

    正确答案:B

  • 第16题:

    单选题
    Which is normally used to hold wire rope for splicing().
    A

    Come along

    B

    Jigger

    C

    Rigger's screw

    D

    Sealing clamp


    正确答案: A
    解析: 暂无解析

  • 第17题:

    单选题
    The required fireman’s outfits required for ship’s are not to be used for any other purpose EXCEPT for the().
    A

    oxygen and explosion meter when it is used for detection of flare gases

    B

    self-contained breathing apparatus,when used as protection from gas leaking from a refrigeration unit

    C

    boots and gloves that are made of rubber or electrically non-conductive material,if used when repairing electrical equipment

    D

    lifeline,if used by personnel entering a compartment which might be deficient of oxygen


    正确答案: C
    解析: 暂无解析

  • 第18题:

    单选题
    Which layout manager is used when the frame is resized the buttons’s position in the Frame might be changed?()
    A

     BorderLayout

    B

     FlowLayout

    C

     CardLayout

    D

     GridLayout


    正确答案: C
    解析: A:该布局管理器将容器划分为五个部分,容器大小的改变不会影响其中的组件的位置而是影响他们的大小。 
    B:该布局管理器根据放入其中的组件的最合适大小调整组件的位置,根据组件放入的顺序安排,一行不能容纳时放入下一行,因此容器的大小改变可能改变组件的位置。    
    C://该布局管理器显示放入该容器的当前页中的组件,一次显示一个,容器大小的改变不能影响其中组件的位置。 
    D://该布局管理器将容器划分为固定的网格,组件加入后占据一个单元,各组件的相对位置不会因为容器的大小变化而变化,改变的只是组件的大小。

  • 第19题:

    多选题
    Which three changes should be made to adapt this class to be used safely by multiple threads?()
    A

    declare reset() using the synchronized keyword

    B

    declare getName() using the synchronized keyword

    C

    declare getCount() using the synchronized keyword

    D

    declare the constructor using the synchronized keyword

    E

    declare increment() using the synchronized keyword


    正确答案: A,C,E
    解析: 暂无解析

  • 第20题:

    单选题
    Which keyword is used with the debug ipv6 [keyword] command to troubleshoot neighbor discovery problems?()
    A

    transaction

    B

    icmp

    C

    discovery

    D

    nd


    正确答案: C
    解析: 暂无解析

  • 第21题:

    多选题
    Which of the following statements about variables and their scopes are true? ()
    A

    Instance variables are member variables of a class.

    B

    Instance variables are declared with the static keyword.

    C

    Local variables defined inside a method are created when the method is executed.

    D

    Local variables must be initialized before they are used.


    正确答案: B,D
    解析: 类中有几种变量,分别是:局部变量(英文可以为:local/automatic/temporary/stack variable)是定义在方法里的变量;实例变量(英文为:instance variable)是在方法外而在类声明内定义的变量,有时也叫成员变量;类变量(英文为:class variable)是用关键字static声明的实例变量,他们的生存期分别是:局部变量在定义该变量的方法被调用时被创建,而在该方法退出后被撤销;实例变量在使用new Xxxx()创建该类的实例时被创建,而其生存期和该类的实例对象的生存期相同;类变量在该类被加载时被创建,不一定要用new Xxxx()创建,所有该类的实例对象共享该类变量,其生存期是类的生存期。任何变量在使用前都必须初始化,但是需要指出的是局部变量必须显式初始化,而实例变量不必,原始类型的实例变量在该类的构造方法被调用时为它分配的缺省的值,整型是0,布尔型是false,而浮点型是0.0f,引用类型(类类型)的实例变量的缺省值是null(没有进行实际的初始化,对它的使用将引起NullPointException),类变量的规则和实例变量一样,不同的是类变量的初始化是在类被加载时。

  • 第22题:

    单选题
    Which command returns a list of commands in which a given keyword is used throughout the Junos hierarchies?()
    A

    help topic

    B

    help reference

    C

    help apropos

    D

    help tip


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    Keyword and blacklist filtering would be handled at which level in a network?()
    A

    Layer 2 managed switch

    B

    DHCP server

    C

    Hardware firewall

    D

    Bridge


    正确答案: B
    解析: 暂无解析