10.12题库中的错误答案

fengqidan

% g$ M2 [# G" N* @6 l! }" |6 \看了一下题库，题目22和152的答案貌似有误。
  W8 M3 \" S5 x5 u! G6 r+ T/ a* ^# b22题，题库给出的答案是BC， 正确应为BE.Which two pieces of information are necessary to compute SNR? (Choose two.)
A. transmit power
4 H6 Y) L2 ]  H$ k$ k+ Q8 lB. noise floor
! |- n( B4 d0 x/ PC. EIRP
D. antenna gain
3 e2 r% s+ r+ d) Z1 h3 b# r+ T9 OE. RSSI
' X1 X2 g) g1 E$ t6 }
& E, j% F6 `: c. e) e* g
. ?, C: a( b! u6 V  y6 g152题题库给为B，正确应为A
3 z( P2 s# R. Y/ @152. What is calculated using the numerical values of the transmitter power level, cable loss, and antenna gain?
A. EIRP
B. dBi
, |/ c7 g# p$ iC. RSSI
D. SNR
, }( C# Q3 m& U* w$ P
) \- |4 a# Q1 b% b, p
7 `3 E) c- W% F7 a# |, _
* p/ f6 o- r- u0 ^1 f9 z3 e, j! E如有不同意见，欢迎讨论

xworkman

感謝分享

xworkman

感謝分享

Gkenny

感謝分享

robblam

152 应该是dBI

robblam

别人说了的，发射功率用什么表示

fengqidan

152题解释

: j, \$ F' \' ]原题翻译为：什么是由发射功率，馈线损耗和天线增益三项的数字值计算得来的
% D1 c" o; N* A7 p  |EIRP (Effective Isotropic Radiated Power) is the actual amount of signal leaving the antenna and is a value measured in db and is based on 3 values:
a) Transmit Power (dBm)
; r- B' K# k( C* U7 e/ \. I: Sb) Cable Loss (dB)
& E& M: X/ E5 x1 X& bc) Antenna Gain (dBi)
5 F' M+ `5 P+ ]; p
To determine EIRP follow this equation:
( I. D7 {% a3 z: _) i, _<Transmit Power> - Cable Loss + Antenna Gain = EIRP

7 U" T# |: g9 X: [参见
https://community.cisco.com/t5/w ... h-loss/ta-p/3128478

thamky

about2580

路漫漫其修远兮，吾将上下而求索

郭家祥

恭喜

anjoyang

Thanks for sharing

aaa24231016

Thanks for sharing

tonyqin

考完还能分享，楼主不错！

ilforno

考完试能分享经验，好样的。

happy7533967

Congrats! Thanks for sharing