单选题If a-b＝0, which of the following must be equal to a b ?A 2aB 2bC a2D aE o

题目
单选题
If a-b＝0, which of the following must be equal to a b ?
A

2a

B

2b

C

a2

D

a

E

o

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2.A server has six drives of equal size attached to a RAID controller. Which of the following RAID levels would provide the FASTEST performance?()A. RAID 5B. RAID 1+0C. RAID 0D. RAID 1

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更多“If a-b＝0, which of the following must be equal to a b ?”相关问题

  • 第1题：

    Which of the following is a characteristic of a sequence?()

    A.A sequence will never generate duplicate values

    B.The MAXVALUE of a sequence can be equal to the MINVALUE

    C.It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero

    D.When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries


    参考答案：B

  • 第2题：

    Which statement is TRUE concerning protection of double bottom tanks against excessive pressure?

    A.Each vent for the tank must be equal to the area of the tank filling line

    B.The tanks must be protected by overflows

    C.The total area of the vents or the overflow shall be at least equal to the area of the fill line

    D.There must be twice as much vent area as the area of the fill line


    正确答案：C

  • 第3题：

    Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to aninterface？ （Choose all that apply.）（）

    • A、The interface must be configured as a Multilink PPP interface
    • B、The correct bandwidth should be configured on the interface
    • C、A QoS policy must not be currently attached to the interface
    • D、CEF must be enabled
    • E、AutoQoS must be enabled globally before it can be enabled on the interface
    • F、An IP address must be configured on the interface if its speed is equal to or less than 768 kbps

    正确答案:A,E

  • 第4题：

    Which of the following is a characteristic of a sequence?（）

    • A、A sequence will never generate duplicate values
    • B、The MAXVALUE of a sequence can be equal to the MINVALUE
    • C、It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero
    • D、When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries

    正确答案:B

  • 第5题：

    A server has six drives of equal size attached to a RAID controller. Which of the following fault tolerant RAID levels would allow the maximum amount of data to be stored？ （）

    • A、 RAID 1+0
    • B、 RAID 5
    • C、 RAID 0
    • D、 RAID 1

    正确答案:B

  • 第6题：

    多选题
    Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface（）
    A

    The interface must be configured as a Multilink PPP interface.

    B

    The correct bandwidth should be configured on the interface.

    C

    A QoS policy must not be currently attached to the interface.

    D

    CEF must be enable

    E

    AutoQoS must be enabled globally before it can be enabled on the interface.

    F

    An IP address must be configured on the interface if its speed is equal to or less than 768 kbps.


    正确答案： A,F
    解析： 暂无解析

  • 第7题：

    单选题
    If 0>ab3c4, then which of the following must be true?Ⅰ. ab is positiveⅡ. ab is negativeⅢ. abc is negative
    A

    Ⅰ only

    B

    Ⅱ only

    C

    Ⅲ only

    D

    Ⅰ and Ⅲ only

    E

    Ⅱ and Ⅲ only


    正确答案： B
    解析：
    Since ab3c4is negative and c4 is positive, then in ab3 one variable is positive and the other negative. Hence ab<0, or negative, so Ⅰ is false and Ⅱ is true. Now let’s look at Ⅲ. You know ab is negative — but you don’t know a thing about C. It could be positive or negative. So cross out E..

  • 第8题：

    单选题
    If a3b2c<0, which of the following must be less than zero?
    A

    a2c

    B

    ab

    C

    ac

    D

    bc

    E

    ac2


    正确答案： D
    解析：
    If a3b2c<0,  then either a or c is negative, but both cannot be negative.  A negative times a positive is negative. So ac<0.

  • 第9题：

    单选题
    A server has six drives of equal size attached to a RAID controller. Which of the following fault tolerant RAID levels would allow the maximum amount of data to be stored？ （）
    A

     RAID 1+0

    B

     RAID 5

    C

     RAID 0

    D

     RAID 1


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    Which condition must be satisfied before an EIGRP neighbor can be considered a feasiblesuccessor?（）
    A

    The neighbor's advertised distance must be less than or equal to the feasible distance of the current successor.

    B

    The neighbor's advertised distance must be less than the f easible distance of the current successor.

    C

    The neighbor's advertised distance must be greater than the feasible distance of the current successor.

    D

    The neighbor's advertised distance must be equal to the feasible distance of the current successor .

    E

    The neighbor's advertised distance must be greater than or equal to the feasible distance of the current successor.


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    A server has six drives of equal size attached to a RAID controller. Which of the following RAID levels would provide the FASTEST performance？（）
    A

     RAID 5

    B

     RAID 1+0

    C

     RAID 0

    D

     RAID 1


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    A server has six drives of equal size attached to a RAID controller. Which of the following fault tolerant RAID levels would allow the maximum amount of data to be stored?（）
    A

    RAID 1 +0

    B

    RAID 5

    C

    RAID 0

    D

    RAID 1


    正确答案： C
    解析： 暂无解析

  • 第13题：

    Which condition must be satisfied before an EIGRP neighbor can be considered a feasiblesuccessor?()

    A. The neighbor‘s advertised distance must be less than or equal to the feasible distance of the current successor.

    B. The neighbor‘s advertised distance must be less than the f easible distance of the current successor.

    C. The neighbor‘s advertised distance must be greater than the feasible distance of the current successor.

    D. The neighbor‘s advertised distance must be equal to the feasible distance of the current successor .

    E. The neighbor‘s advertised distance must be greater than or equal to the feasible distance of the current successor.


    参考答案：A

  • 第14题：

    Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface（）

    • A、The interface must be configured as a Multilink PPP interface.
    • B、The correct bandwidth should be configured on the interface.
    • C、A QoS policy must not be currently attached to the interface.
    • D、CEF must be enable
    • E、AutoQoS must be enabled globally before it can be enabled on the interface.
    • F、An IP address must be configured on the interface if its speed is equal to or less than 768 kbps.

    正确答案:A,E

  • 第15题：

    Which condition must be satisfied before an EIGRP neighbor can be considered a feasiblesuccessor?（）

    • A、The neighbor's advertised distance must be less than or equal to the feasible distance of the current successor.
    • B、The neighbor's advertised distance must be less than the f easible distance of the current successor.
    • C、The neighbor's advertised distance must be greater than the feasible distance of the current successor.
    • D、The neighbor's advertised distance must be equal to the feasible distance of the current successor .
    • E、The neighbor's advertised distance must be greater than or equal to the feasible distance of the current successor.

    正确答案:A

  • 第16题：

    A server has six drives of equal size attached to a RAID controller. Which of the following RAID levels would provide the FASTEST performance?（）

    • A、RAID 5
    • B、RAID 1+0
    • C、RAID 0
    • D、RAID 1

    正确答案:C

  • 第17题：

    Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）

    • A、 If the hashCode values are different， the objects might be equal.
    • B、 If the hashCode values are the same， the object must be equal.
    • C、 If the hashCode values are the same， the objects might be equal.
    • D、 If the hashCode values are different， the objects must be unequal.

    正确答案:C,D

  • 第18题：

    单选题
    Which of the following is a characteristic of a sequence?（）
    A

    A sequence will never generate duplicate values

    B

    The MAXVALUE of a sequence can be equal to the MINVALUE

    C

    It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero

    D

    When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundaries


    正确答案： C
    解析： 暂无解析

  • 第19题：

    多选题
    Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to aninterface？ （Choose all that apply.）（）
    A

    The interface must be configured as a Multilink PPP interface

    B

    The correct bandwidth should be configured on the interface

    C

    A QoS policy must not be currently attached to the interface

    D

    CEF must be enabled

    E

    AutoQoS must be enabled globally before it can be enabled on the interface

    F

    An IP address must be configured on the interface if its speed is equal to or less than 768 kbps


    正确答案： A,E
    解析： 暂无解析

  • 第20题：

    单选题
    A server has six drives of equal size attached to a RAID controller. Which of the following RAID levels would provide the FASTEST performance?（）
    A

    RAID 5

    B

    RAID 1+0

    C

    RAID 0

    D

    RAID 1


    正确答案： C
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）
    A

    If the hashCode values are different， the objects might be equal.

    B

    If the hashCode values are the same， the object must be equal.

    C

    If the hashCode values are the same， the objects might be equal.

    D

    If the hashCode values are different， the objects must be unequal.


    正确答案： B,A
    解析： 暂无解析

  • 第22题：

    单选题
    Which condition is necessary for a substance to burn?（）
    A

    The temperature of the substance must be equal to or above its fire point

    B

    The air must contain oxygen in sufficient quantity

    C

    The mixture of vapors with air must be within the explosive range

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement is TRUE concerning protection of double bottom tanks against excessive pressure? （）
    A

    Each vent for the tank must be equal to the area of the tank filling line

    B

    The tanks must be protected by overflows

    C

    The total area of the vents or the overflow shall be at least equal to the area of the fill line

    D

    There must be twice as much vent area as the area of the fill line


    正确答案： C
    解析： 暂无解析

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