多选题Which of the following are true statements regarding the characteristics of OSPF areas? Select all that apply.（）AAll OSPF networks require the use of multiple areasBMultiple OSPF areas must connect to area 0CSingle area OSPF networks must be configured

题目
多选题
Which of the following are true statements regarding the characteristics of OSPF areas? Select all that apply.（）
A

All OSPF networks require the use of multiple areas

B

Multiple OSPF areas must connect to area 0

C

Single area OSPF networks must be configured in area 1

D

Areas can be assigned any number from 0 to 63535

E

Area 0 is called the backbone area

F

Each OSPF area need to be configured with a loopback interface

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更多“Which of the following are true statements regarding the cha”相关问题

  • 第1题：

    The following configuration command was entered into a router:ip route 172.16.3.0 255.255.255.0 192.168.2.4 Which of the following statements are true regarding this configuration change?()

    A. The default administrative distance is used.

    B. The command is used to establish a static route.

    C. The command is used to configure the router interfaces.

    D. The command is used to establish a stub network.

    E. The subnet mask for the source address is 255.255.255.0


    参考答案：A, B

  • 第2题：

    Which of the following is true regarding Label Distribution Protocol （LDP）？（）

    • A、It is a label distribution protocol for MPLS
    • B、It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network
    • C、Tag distribution Protocol （TDP） was the basis for LDP
    • D、All of the above are true

    正确答案:D

  • 第3题：

    Which two statements are true regarding the starting of the database instance using the following command?（） SQL>STARTUP UPGRADE

    • A、It enables all system triggers.
    • B、It allows only SYSDBA connections.
    • C、It ensures that all job queues remain active during the upgrade process.
    • D、It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.

    正确答案:B,D

  • 第4题：

    The following configuration command was entered into a router:ip route 172.16.3.0 255.255.255.0 192.168.2.4 Which of the following statements are true regarding this configuration change?（）

    • A、The default administrative distance is used.
    • B、The command is used to establish a static route.
    • C、The command is used to configure the router interfaces.
    • D、The command is used to establish a stub network.
    • E、The subnet mask for the source address is 255.255.255.0

    正确答案:A,B

  • 第5题：

    Which two statements are true regarding L2TP? （）(Choose two.)

    • A、Tunnels are initiated by the LAC
    • B、Tunnels are initiated by the LNS
    • C、By default, subscriber authentication occurs on the LNS
    • D、By default, subscriber authentication occurs on the LAC

    正确答案:A,C

  • 第6题：

    Examine the following statement that is used to modify the constraint on the SALES table： SQL> ALTER TABLE SALES MODIFY CONSTRAINT pk DISABLE VALIDATE； Which three statements are true regarding the above command（）

    • A、The constraint remains valid.
    • B、The index on the constraint is dropped.
    • C、It allows the loading of data into the table using SQL*Loader.
    • D、New data conforms to the constraint， but existing data is not checked
    • E、It allows the data manipulation on the table using INSERT/UPDATE/DELETE SQL statements.

    正确答案:A,B,C

  • 第7题：

    多选题
    If p and q are primes greater than 2, which of the following statements must be true? (Indicate all such statements.)
    A

    p + q is even

    B

    pq is odd

    C

    p2-q2 is even


    正确答案： A,B
    解析：
    由于所有大于2的质数都是奇数，因此p和q均是奇数，两奇数相加为偶数，所以A项正确；两奇数的乘积还是奇数，所以B项正确；两奇数的平方还各自是奇数，而两奇数的平方之差是偶数，因此C项也正确；所以选择A、B、C三项。

  • 第8题：

    多选题
    Which of the following statements are true? (Indicate all such statements.)
    A

    τ(5) =τ(7)

    B

    τ(5) τ(7) =τ(35)

    C

    τ(5) + τ(7) =τ(12)


    正确答案： A,B
    解析：
    5和7均只有两个正除数，因此根据题干信息，A项正确；35有四个正除数，所以B项也是正确的；12有6个正除数，因此C项错误；选择A、B两项。

  • 第9题：

    多选题
    The following configuration command was entered into a router:ip route 172.16.3.0 255.255.255.0 192.168.2.4 Which of the following statements are true regarding this configuration change?（）
    A

    The default administrative distance is used.

    B

    The command is used to establish a static route.

    C

    The command is used to configure the router interfaces.

    D

    The command is used to establish a stub network.

    E

    The subnet mask for the source address is 255.255.255.0


    正确答案： D,C
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following is true regarding Label Distribution Protocol （LDP）？（）
    A

    It is a label distribution protocol for MPLS

    B

    It is a set of procedures and messages by which LSRs establish Label Switch Paths （LSPs） through a network

    C

    Tag distribution Protocol （TDP） was the basis for LDP

    D

    All of the above are true


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    Which statement is true regarding the INTERSECT operator?（）
    A

    It ignores NULL values 

    B

    Reversing the order of the intersected tables alters the result 

    C

    The names of columns in all SELECT statements must be identical 

    D

    The number of columns and data types must be identical for all SELECT statements in the query 


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）
    A

     The VERSIONS BETWEEN clause may be used in DML statements.

    B

     The VERSIONS BETWEEN clause may be used in DDL statements.

    C

     The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.

    D

     The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Which of the following statements is TRUE regarding crane operations ________．

    A.Radio communications allow the crane operator to disregard the use of hand signals

    B.The crane operators and signalman must be familiar with the correct hand signals

    C.The forward cranes can be operated from the bridge

    D.The aft cranes can be operated from the aft steering station


    正确答案：B

  • 第14题：

    Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）  

    • A、 The VERSIONS BETWEEN clause may be used in DML statements.
    • B、 The VERSIONS BETWEEN clause may be used in DDL statements.
    • C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.
    • D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.

    正确答案:C

  • 第15题：

    Which statement is true regarding the INTERSECT operator?（）

    • A、It ignores NULL values 
    • B、Reversing the order of the intersected tables alters the result 
    • C、The names of columns in all SELECT statements must be identical 
    • D、The number of columns and data types must be identical for all SELECT statements in the query 

    正确答案:D

  • 第16题：

    The man page for command shows the following syntax: The man page for command shows the following syntax: command [ -a | -b ] Which of the following statements is true regarding this entry?（）

    • A、Either the -a or flag -b may be used, but not both.
    • B、If the flag -a is used then the flag -b also must be used.
    • C、One of the -a or -b flags must be used, but not both at the same time.
    • D、Both the flags may be used together, but neither are mandatory.

    正确答案:D

  • 第17题：

    Which of the following statements are true regarding the Recycle Bin？（）

    • A、 The Recycle Bin is a physical storage area for dropped objects.
    • B、 The Recycle Bin is a logical container for dropped objects.
    • C、 The Recycle Bin stores the results of a Flashback Drop operation.
    • D、 The objects in the Recycle Bin are stored in the tablespace in which they were created.

    正确答案:B,D

  • 第18题：

    You have just performed a FLASHBACK TABLE operation using the following command：   flashback table employees to scn 123456；   The employees table has triggers associated with it.  Which of the following statements is true regarding the state of the triggers during the Flashback Table operation？（）  

    • A、 All the triggers are disabled.
    • B、 All the triggers are enabled by default.
    • C、 Enabled triggers remain enabled and disabled triggers remain disabled.
    • D、 Triggers are deleted when a Flashback Table operation is performed.

    正确答案:A

  • 第19题：

    多选题
    Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)
    A

    c=d

    B

    l and k are parallel

    C

    m and l are perpendicular


    正确答案： C,B
    解析：
    根据题目中的已知信息无法推断出各直线的关系，因此B、C均不正确；而由图示可知，c和d分别是a和b的补角，由于a=b，所以c=d，A项正确。

  • 第20题：

    单选题
    Which of the following statements is TRUE regarding crane operations（）.
    A

    Radio communications allow the crane operator to disregard the use of hand signals

    B

    The crane operators and signalman must be familiar with the correct hand signals

    C

    The forward cranes can be operated from the bridge

    D

    The aft cranes can be operated from the aft steering station


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    Which of the following statements are true regarding the Recycle Bin？（）
    A

    The Recycle Bin is a physical storage area for dropped objects.

    B

    The Recycle Bin is a logical container for dropped objects.

    C

    The Recycle Bin stores the results of a Flashback Drop operation.

    D

    The objects in the Recycle Bin are stored in the tablespace in which they were created.


    正确答案： B,D
    解析： 暂无解析

  • 第22题：

    单选题
    Which of the following statements is/are true regarding hydraulic pumps in general? （）
    A

    Variable volumes can be obtained with gear pumps only by variation of the pump drive speed

    B

    A radial piston pump houses sliding pistons in a stationary cylinder block through which passes a rotating pintle or ported shaft

    C

    The amount of fluid displaced per revolution of an axial piston rotary pump is dependent on the angle formed between the cylinder block and valve plate

    D

    All of the above


    正确答案： B
    解析： 暂无解析

  • 第23题：

    多选题
    The following configuration command was issued on router TK1:ip route 172.16.3.0 255.255.255.0 192.168.2.1.Which of the following statements are true regarding this command?（）
    A

    The command is used to establish a static route.

    B

    The default administrative distance is used.

    C

    The command is used to configure the default route.

    D

    The subnet mask for the source address is 255.255.255.0

    E

    The command is used to establish a stub network


    正确答案： D,A
    解析： 暂无解析

  • 第24题：

    单选题
    Which of the following is not true regarding IOS default settings for administrative distance?（）
    A

    EIGRPinternal：90

    B

    OSPFexternal：110

    C

    EIGRPexternal：90

    D

    RIP：120

    E

    OSPFinternal：110


    正确答案： D
    解析： 暂无解析

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