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While troubleshooting a connectivity issue from a PC you obtain the following information:Local PC IP address: 190.0.3.35/24Default Gateway: 190.0.3.1Remote Server: 190.0.5.250/24You then conduct the following tests from the local PC:Ping 127.0.0.1 - Unsu

题目

While troubleshooting a connectivity issue from a PC you obtain the following information:

Local PC IP address: 190.0.3.35/24

Default Gateway: 190.0.3.1

Remote Server: 190.0.5.250/24

You then conduct the following tests from the local PC:

Ping 127.0.0.1 - Unsuccessful

Ping 190.0.3.35 - Successful

Ping 190.0.3.1 - Unsuccessful

Ping 190.0.5.250 – Unsuccessful

What is the underlying cause of this problem?

A．TCP/IP not correctly installed

B．Local physical layer problem

C．NIC not functioning

D．Remote physical layer problem

E．None of the above

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参考答案和解析
正确答案：A
解析：Explanation:
Every Windows based PC uses the 127.0.0.1 as the local loopback IP address. Every PC will respond to this local IP address if the TCP/IP stack is correctly installed and running on the machine. If you cannot ping the loopback address of 127.0.0.1, then something is wrong with the TCP/IP protocol stack.
更多“While troubleshooting a connectivity issue from a PC you obtain the following information: ”相关问题

  • 第1题：

    在SQL查询中，若要取得“学生”数据表中的所有记录和字段，其SQL语法为( )。

    A．SELECT*FROM学生

    B．SELECT姓名FROM学生

    C．SELECT姓名FROM学生WHILE学号=02650

    D．SELECT*FROM学生WHILE学号=02650


    正确答案：B
    解析：“SELECT*FROM学生”表示取得“学生”数据表中的所有记录和字段。所以选项A不符合题意。“SELECT姓名FROM学生”表示取得“学生”数据表中的所有记录，但只取得“姓名”字段，并不是全部字段，选项B是正确的。“SELECT姓名FROM学生WHILE学号=02650”表示取得“学生”数据表中的“学号”为02650的记录，而且只选取“姓名”字段，选项C不符合题意。“SELECT*FROM学生WHILE学号=02650”表示取得“学生”数据表中的“学号”为02650的记录，并选取全部字段，选项D不符合题意。

  • 第2题：

    [A] acquire

    [B] achieve

    [C] obtain

    [D] fulfill


    正确答案：B
    34. B 
    “学业上取得成就”用 achieve。[A] acquire 和[C] obtain 作“获得”解时，作及物动词，后及宾语。[D]fulfill vt. 实践，实行，完成，达到，侧重“履行”之意。

  • 第3题：

    His clients often defer payment for as long as possible.

    A:make
    B:demand
    C:postpone
    D:obtain

    答案：C
    解析：
    本题考查的是对动词的认知。这句话的意思是：他的客户经常尽可能地推迟支付时间。defer的意思是推迟，例如：We wish to defer our decision until next week．我们希望推迟到下星期再作出决定。A.make做；B.demand要求；C.postpone推迟，例如：It won't hurt to postpone the matter for a few days．此事耽搁几天无碍；D.obtain获得。defer和postpone意思最接近，所以选C。

  • 第4题：

    An administrator analyzes a poorly performing system and suspects that the issue is related to CPU resource. Upon reviewing output of vmstat, the administrator is concerned with the values in the ‘pc’ and ‘ec’ columns.Which definition describes these two headings?（）

    A.‘pc‘ refers to the number of physical processors consumed, while ‘ec‘ refers to the percentage of entitled capacity consumed.

    B.‘pc‘ refers to the ‘physical CPUs‘ and lists how many are left un-allocated, while ec‘ refers to the ‘entitled CPUs‘ and lists what amount is currently allocated to the LPAR.

    C.‘pc‘ refers to the ‘processor count‘ and reflects how many CPUs are allocated to the LPAR, while ‘ec ‘ refers to the ‘extra capacity‘ and lists how much above the LPAR entitlement is being consumed.

    D.‘pc‘ refers to ‘processor cards‘ and reflects how many MCM modules are actually being used by this LPAR, while ‘ec‘ refers to the ‘entitled CPUs‘and lists what amount is currently allocated to the LPAR.


    参考答案：A

  • 第5题：

    Customers often defer payment for as long as possible.

    A:make
    B:demand
    C:postpone
    D:obtain

    答案：C
    解析：

  • 第6题：

    Do you need any rice? I can get some（） you（）the supermarket.

    Ato；from

    Bfor；to

    Cfor；from


    B
    略

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