Web第2讲 数据通信基础 2.3编码和调制. 1.如果某个无噪声信道的带宽是4000Hz，采用16种不同相位的移相键控调制技术，则数据传输速率为（ 32kbps ）。. 2.无噪声信道上传输单一频率正弦信号会引发（ 信号衰减 ）。. 3.如果想要在PSTN用户线上取得较高传输速率，一般不 ... WebBase 10. In base 10, each digit in a number represents the number of copies of that power of 10. That is, the first digit tells you how many ones you have; the second tells you how many 10s you have; the third tells you how many 10x10 you have; the fourth tells you how many 10x10x10 you have; and so on.

第一个：子网掩码不同是否可以通信 - hang1368 - 博客园

WebApr 2, 2024 · 16. Three resistors, with values of 47 Ω, 68 Ω, and 82 Ω, are connected in series with a 50-V dc generator, as shown in Fig. 4-12. The total power consumed by this network of resistors is: A. 250 mW. B. 13 mW. C. 13 … Web需要确定一个ip地址 需要32位的ip地址，同时需要子网掩码来区分网络位与主机位 设一个地址：172.18.123.1 这一个b类地址：子网掩码是 255.255.0.0 故网络位是172.18。在该子 … tegan sara clothing

【题目】5类IP地址能包含的网段和主机数A类地址:最高位为0,紧 …

WebRules for expressions with fractions: Fractions - use a forward slash to divide the numerator by the denominator, i.e., for five-hundredths, enter 5/100.If you use mixed numbers, leave a space between the whole and fraction parts. Mixed numerals (mixed numbers or fractions) keep one space between the integer and fraction and use a forward slash to input … Web以win7系统为例，设置ip和子网掩码的方法如下： 1、在电脑桌面找到网络，在网络图标上点击鼠标右键，选择属性点击。2、进入属性后会弹跳到下图的界面，点击本地连接。3、 … Web掩码24位代表的是11111111.11111111.11111111.00000000，换算成十进制就是255.255.255.0。. 掩码27位代表的是11111111.11111111.11111111.11100000,换算成十进 … tegan sandilands