参考答案和解析
正确答案: B,D
解析: Java中的标示符必须是字母、美元符($)或下划线(_)开头。关键字与保留字不能作为标示符。选项C中的const是Java的保留字,所以不能作标示符。选项E中的3_case以数字开头,违反了Java的规则。
更多“多选题Choose the three valid identifiers from those listed below.()AI Do Like The Long Name ClassB$byteCconstD_okE3_case”相关问题
  • 第1题:

    Which are valid modes for a switch port used as a VLAN trunk (Choose three.)()。

    A.transparent

    B.auto

    C.on

    D.desirable

    E.blocking

    F.forwarding


    参考答案:B, C, D

  • 第2题:

    Which three of the following are components of a syslog message? ()(Choose three.)

    • A、time stamp
    • B、error codes
    • C、severity level
    • D、log message name

    正确答案:A,C,D

  • 第3题:

    What are three valid LDP message types? ()(Choose three.)

    • A、peer discovery
    • B、label distribution
    • C、path initialization
    • D、session management
    • E、connection establishment

    正确答案:A,B,D

  • 第4题:

    You run a Windows Defender scan on your computer.  You notice a valid program listed in Quarantined Items.  You need to use this program on your computer.  What should you do?()

    • A、Reinstall the application to another location.
    • B、Restore the program from the Quarantined Items list.
    • C、Remove the program from the Quarantined Items list.
    • D、Repair the program from the Programs option in Control Panel.

    正确答案:B

  • 第5题:

    The Origin attribute describes the source of the BGP prefix. Which three are valid Origin codes?() (Choose three.)

    • A、IGP
    • B、BGP
    • C、EGP
    • D、Incomplete
    • E、Anonymous

    正确答案:A,C,D

  • 第6题:

    下列哪些SQL语句可以查询出User表中name为张三的记录()。

    • A、SELECT * FROM User WHERE name = ’张三’
    • B、SELECT * FROM User WHERE name = ’张三’ LIMIT 0,1
    • C、SELECT * FROM User WHERE name LIKE ’张三’
    • D、SELECT * FROM User WHERE name LIKE ’%张三%’

    正确答案:A,B,C,D

  • 第7题:

    多选题
    Which three values are valid parameters for the DO_KEY built-in?()
    A

    ENTER

    B

    GO_ITEM

    C

    VALIDATE

    D

    EXIT_FORM

    E

    EXECUTE_QUERY


    正确答案: C,D
    解析: 暂无解析

  • 第8题:

    多选题
    What are three valid LDP message types? ()(Choose three.)
    A

    peer discovery

    B

    label distribution

    C

    path initialization

    D

    session management

    E

    connection establishment


    正确答案: B,C
    解析: 暂无解析

  • 第9题:

    多选题
    Using the LIST command in Recovery Manager (RMAN), which two pieces of information in the RMANrepository can be listed?() (Choose two.)
    A

    stored scripts in the recovery catalog.

    B

    backups that can be deleted from disk.

    C

    backup sets and image copies are obsolete.

    D

    backups that do not have the AVAILABLE status in the RMAN repository.


    正确答案: C,D
    解析: 暂无解析

  • 第10题:

    多选题
    下列哪些SQL语句可以查询出User表中name为张三的记录()。
    A

    SELECT * FROM User WHERE name = ’张三’

    B

    SELECT * FROM User WHERE name = ’张三’ LIMIT 0,1

    C

    SELECT * FROM User WHERE name LIKE ’张三’

    D

    SELECT * FROM User WHERE name LIKE ’%张三%’


    正确答案: A,D
    解析: 暂无解析

  • 第11题:

    多选题
    Which of the following three port types are valid Spanning Tree port types?(Choose the best threeanswers.)()
    A

    Designated port

    B

    Nonswitch port

    C

    Switch port

    D

    Nonroot port

    E

    Nondesignated port

    F

    Root port


    正确答案: A,B
    解析: 暂无解析

  • 第12题:

    多选题
    What are three valid Juniper Networks IPS attack object types?() (Choose three.)
    A

    signature

    B

    anomaly

    C

    trojan

    D

    virus

    E

    chain


    正确答案: A,D
    解析: 暂无解析

  • 第13题:

    Which are valid modes for a switch port used as a VLAN trunk (Choose three.)()。

    • A、transparent
    • B、auto
    • C、on
    • D、desirable
    • E、blocking
    • F、forwarding

    正确答案:B,C,D

  • 第14题:

    Which are valid identifiers?()  

    • A、_class
    • B、$value$
    • C、zer@
    • D、¥ngstr
    • E、2muchuq

    正确答案:A,B,D

  • 第15题:

    What are three valid Juniper Networks IPS attack object types?() (Choose three.)

    • A、signature
    • B、anomaly
    • C、trojan
    • D、virus
    • E、chain

    正确答案:A,B,E

  • 第16题:

    Choose the three valid identifiers from those listed below.()

    • A、I Do Like The Long Name Class
    • B、$byte
    • C、const
    • D、_ok
    • E、3_case

    正确答案:A,B,D

  • 第17题:

    You need to display the last names of those employees who have the letter "A" as the second character in their names. Which SQL statement displays the required results? ()

    • A、SELECT last_name FROM EMP WHERE last_ name LIKE '_A%';
    • B、SELECT last_name FROM EMP WHERE last name ='*A%'
    • C、SELECT last_name FROM EMP WHERE last name ='_A%';
    • D、SELECT last_name FROM EMP WHERE last name LIKE '*A%'

    正确答案:A

  • 第18题:

    多选题
    Which are valid identifiers?()
    A

    _class

    B

    $value$

    C

    zer@

    D

    ¥ngstr

    E

    2muchuq


    正确答案: C,D
    解析: 暂无解析

  • 第19题:

    多选题
    Choose the three valid identifiers from those listed below.()
    A

    I Do Like The Long Name Class

    B

    $byte

    C

    const

    D

    _ok

    E

    3_case


    正确答案: B,D
    解析: Java中的标示符必须是字母、美元符($)或下划线(_)开头。关键字与保留字不能作为标示符。选项C中的const是Java的保留字,所以不能作标示符。选项E中的3_case以数字开头,违反了Java的规则。

  • 第20题:

    多选题
    Which three methods can you use for route discovery on a WX platform? ()(Choose three.)
    A

    Enable RIP

    B

    Enable OSPF

    C

    Periodically poll any router

    D

    Import routes from a TFTP server


    正确答案: D,C
    解析: 暂无解析

  • 第21题:

    多选题
    Which are valid modes for a switch port used as a VLAN trunk (Choose three.)()。
    A

    transparent

    B

    auto

    C

    on

    D

    desirable

    E

    blocking

    F

    forwarding


    正确答案: A,D
    解析: 暂无解析

  • 第22题:

    多选题
    The Origin attribute describes the source of the BGP prefix. Which three are valid Origin codes?() (Choose three.)
    A

    IGP

    B

    BGP

    C

    EGP

    D

    Incomplete

    E

    Anonymous


    正确答案: D,A
    解析: 暂无解析

  • 第23题:

    多选题
    Which three of the following are components of a syslog message? ()(Choose three.)
    A

    time stamp

    B

    error codes

    C

    severity level

    D

    log message name


    正确答案: D,B
    解析: 暂无解析

  • 第24题:

    查询student数据库中grade表中学生姓名st_name含有“国”的全部学生情况,可用什么命令? (1.0分) [单选.] A. select * from grade where st_name like ‘国’; B. select * from student where st_name like ‘国’; C. select * from grade where st_name= ‘国’; D. select * from grade where st_name like ‘%国%’;
    答案:D