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Which of the following commands should be used to determine DNS name resolution performance?()A、 iptraceB、 vmstatC、 hostnameD、 ifconfig

题目

Which of the following commands should be used to determine DNS name resolution performance?()

  • A、 iptrace
  • B、 vmstat
  • C、 hostname
  • D、 ifconfig

相似考题
参考答案和解析
正确答案:A
更多“Which of the f”相关问题
  • 第1题:

    Which of the following NSAP addresses is a private, locally administered address?()

    A. 39.0f01.0002.0000.0c00.1111.00

    B. 48.0f01.0002.0000.0c00.1111.00

    C. 49.0004.30ac.0000.3090.c7df.00

    D. 52.0f01.0002.0000. 0c00.1111.00


    参考答案:C

  • 第2题:

    Which two cause a compiler error?() 

    • A、 float[] = new float(3);
    • B、 float f2[] = new float[];
    • C、 float[] f1 = new float[3];
    • D、 float f3[] = new float[3];
    • E、 float f5[] = { 1.0f, 2.0f, 2.0f };
    • F、 float f4[] = new float[] { 1.0f. 2.0f. 3.0f};

    正确答案:A,B

  • 第3题:

    Which of the following switches in Windows can be used to ping a host until stopped?()

    • A、-l
    • B、-a
    • C、-t
    • D、-f

    正确答案:C

  • 第4题:

    Which of the following is an example of a MAC address?()

    • A、10.0.10.1
    • B、1A-23-F9-CD-06-9L
    • C、1A-23-F9-CD-06-9B
    • D、1A-23-F9-CD-06-9B-23-5C

    正确答案:C

  • 第5题:

    Which of the following are standard AMD processor socket types?()

    • A、1366
    • B、1155
    • C、940
    • D、LGA
    • E、F

    正确答案:C,E

  • 第6题:

    Which of the following keystrokes allows installation of third party storage drivers during a Windows set-up?()

    • A、F6
    • B、F7
    • C、F8
    • D、F9

    正确答案:C

  • 第7题:

    After the /etc/tunables/nextboot file has been edited, which command can be used to validate changes to the IO performance tuning settings?()

    • A、ioo -v nextboot
    • B、ioo -c nextboot
    • C、valcheck -f nextboot
    • D、tuncheck -r -f nextboot

    正确答案:D

  • 第8题:

    Which two are valid declarations of a float?()

    • A、 float f = 1F;
    • B、 float f = 1.0.;
    • C、 float f = ‘1’;
    • D、 float f = “1”;
    • E、 float f = 1.0d;

    正确答案:A,C

  • 第9题:

    单选题
    Which of the following is the typical recommended temperature range for a data center?()
    A

    64°F to 77°F(18°C to 25°C)

    B

    78°F to 85°F(26°C to 29°C)

    C

    41°F to 55°F(5°C to 12°C)

    D

    56°F to 63°F(13°C to 17°C)


    正确答案: C
    解析: 暂无解析

  • 第10题:

    多选题
    Which two are valid declarations of a float?()
    A

    float f = 1F;

    B

    float f = 1.0.;

    C

    float f = ‘1’;

    D

    float f = “1”;

    E

    float f = 1.0d;


    正确答案: B,C
    解析: 暂无解析

  • 第11题:

    多选题
    class BaseClass{  private float x= 1.0f;  protected void setVar (float f) {x = f;}  }  class SubClass extends BaseClass   {  private float x = 2.0f;  //insert code here  }   Which two are valid examples of method overriding?()
    A

    Void setVar(float f) {x = f;}

    B

    Public void setVar(int f) {x = f;}

    C

    Public void setVar(float f) {x = f;}

    D

    Public double setVar(float f) {x = f;}

    E

    Public final void setVar(float f) {x = f;}

    F

    Protected float setVar() {x=3.0f; return 3.0f; }


    正确答案: F,E
    解析: 暂无解析

  • 第12题:

    多选题
    Which two cause a compiler error?()
    A

    float[] = new float(3);

    B

    float f2[] = new float[];

    C

    float[] f1 = new float[3];

    D

    float f3[] = new float[3];

    E

    float f5[] = { 1.0f, 2.0f, 2.0f };

    F

    float f4[] = new float[] { 1.0f. 2.0f. 3.0f};


    正确答案: D,C
    解析: The F. statement is incorrect. The float numbers should be separated with commas and not dots.

  • 第13题:

    Which of the following keys are used to access advanced Windows start up options while a computer is booting?()

    • A、F8
    • B、F6
    • C、F5
    • D、F2

    正确答案:A

  • 第14题:

    Which of the following NSAP addresses is a private, locally administered address?()

    • A、39.0f01.0002.0000.0c00.1111.00
    • B、48.0f01.0002.0000.0c00.1111.00
    • C、49.0004.30ac.0000.3090.c7df.00
    • D、52.0f01.0002.0000. 0c00.1111.00

    正确答案:C

  • 第15题:

    Which of the following key sequences will allow a technician to install third party drivers during a Windows installation? ()

    • A、 Press F6
    • B、 Press ESC
    • C、 Press any key
    • D、 Press Alt+F8

    正确答案:A

  • 第16题:

    Which of the following keys is pressed to enter the Windows boot options after POST?()

    • A、F1
    • B、F8
    • C、F10
    • D、F12

    正确答案:B

  • 第17题:

    Which of the following is the typical recommended temperature range for a data center?()

    • A、64°F to 77°F(18°C to 25°C)
    • B、78°F to 85°F(26°C to 29°C)
    • C、41°F to 55°F(5°C to 12°C)
    • D、56°F to 63°F(13°C to 17°C)

    正确答案:A

  • 第18题:

    Which of the following kdb commands is used to obtain a stack trace from a dump? ()

    • A、 trb 
    • B、 his 
    • C、 f 
    • D、 trace

    正确答案:C

  • 第19题:

    Which of the following commands would a system administrator run tovalidate /etc/tunables/nextboot after manually editing()

    • A、ksh -n nextboot
    • B、tunsave -a -f nextboot
    • C、tuncheck -r -f nextboot
    • D、tunsave nextboot

    正确答案:C

  • 第20题:

    Which of the following statements are legal?()         

    • A、 long l = 4990;
    • B、 int i = 4L;
    • C、 float f = 1.1;
    • D、 double d = 34.4;
    • E、 double t = 0.9F;

    正确答案:A,D,E

  • 第21题:

    单选题
    A technician is installing Windows XP on a system that has a SATA HDD. Which of the following will the technician MOST likely have to do to start the installation? ()
    A

    Press the F8 Key

    B

    Press the F3 Key

    C

    Press the F2 Key

    D

    Press the F6 Key


    正确答案: A
    解析: 暂无解析

  • 第22题:

    单选题
    Which of the following kdb commands is used to obtain a stack trace from a dump? ()
    A

     trb 

    B

     his 

    C

     f 

    D

     trace


    正确答案: C
    解析: 暂无解析

  • 第23题:

    单选题
    Which of the following keystrokes allows installation of third party storage drivers during a Windows set-up? ()
    A

     F6

    B

     F7

    C

     F8

    D

     F9


    正确答案: B
    解析: 暂无解析

  • 第24题:

    单选题
    Given: Which code, inserted at line 16, will cause a java.lang.ClassCastException?()
    A

    Alpha a = x;

    B

    Foo f = (Delta)x;

    C

    Foo f = (Alpha)x;

    D

    Beta b = (Beta)(Alpha)x;


    正确答案: B
    解析: 暂无解析