思科认证考试

Which signal and noise values will result in the best phone communication with an access point？（）A、 Signal strength 0dBm， noise level 6dBmB、 Signal strength 8dBm， noise level 9dBmC、 Signal strength 4 dBm， noise level 4 dBmD、 Signal strength 6dBm， noise le

题目

Which signal and noise values will result in the best phone communication with an access point？（）

  • A、 Signal strength 0dBm， noise level 6dBm
  • B、 Signal strength 8dBm， noise level 9dBm
  • C、 Signal strength 4 dBm， noise level 4 dBm
  • D、 Signal strength 6dBm， noise level 5 dBm
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相似问题和答案

第1题：

When comparing DSL broadband to cable broadband, which of the following is an advantage ofDSL broadband?()

A. Upgraded copper lines allow maximum speed greater than cable

B. Signal is not shared back to the switch

C. Signal is shared back to the switch

D. Distance is not a factor in signal speed


参考答案：B

第2题：

After 100 meters (328 feet), CAT6 cabling is known to experience which of the following symptoms?()

A. Signal loss

B. Signal bleed

C. Data collision

D. Crosstalk


参考答案：A

第3题：

The manager is always in a bad () on Mondays which signal the beginning of another exhausting week.

A.mood

B.humor

C.mode

D.voice


参考答案：A

第4题：

Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.

A.When at anchor, the pilot vessel is only required to sound anchor signals

B.The identification signal must be sounded any time the pilot vessel is underway

C.The pilot vessel may only sound the identity signal when making way

D.All of the above


正确答案：A
雾中有关引水船的识别信号，哪句是正确的？当锚泊时，引水船仅被要求鸣放锚泊船信号.

第5题：

You are the Cisco Network Designer in Cisco.com. Which signal and noise values will result in the best phone communication with an access point?()

A. signal strength 5dBm

B. signal strength 6dBm

C. noise level 4dBm

D. noise level 5dBm


参考答案：B, D

第6题：

Which of the following transmits a digital signal?()

A. VGA

B. XGA

C. Component video

D. DisplayPort


参考答案：D

第7题：

An analog signal's characteristic quantity representing data may 66). at any instant, any value within a continuous(67). For example, an analog signal may follow continuously the values of another physical quantity representing data.A discrete signal is composed of(68)elements in time, each element having one or more characteristic quantities which can represent data. Examples of characteristic quantities are amplitude, waveform,(69), and position in time. A digital signal is a special case of discrete signals, in which data are represented by a(70)number of well-defined discrete values that one of its characteristic quantities may take in time.

A．acquire

B．collect

C．assume

D．fetch


正确答案：C

第8题：

The maximum data rate of any single wireless link can be described by the shannon’s theorem which is related to the（）in hertz，and the（）on the channel

A．signal frequency B．bandwidth C．carrier frequency D．noise frequency A．signal B．caeeier C．noise D．data signal


正确答案：B,C

第9题：

If the radio signal ground wave extends out for less distance than the minimum skywave distance，there is an area in which no signal is received．This is called the ______．

A.Skip zone

B.Blackout zone

C.Diffraction zone

D.Shadow zone


正确答案：A

第10题：

Which signal and noise values will result in the best phone communication with an access point?（）

  • A、signal strength 46dBm, noise level 95dBm
  • B、signal strength 74dBm, noise level 94dBm
  • C、signal strength 68dBm, noise level 79dBm
  • D、signal strength 50dBm, noise level 56dBm

正确答案:A

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