计算机网络原理大题汇总

雨点打透心脏的1/2处 2022-11-04 05:56 262阅读 0赞

### 文章目录 ###

*   *   *  一、计算题
         *  二、简答题
         *  三、综合题
         *   *  1.计算机网络性能
             *   *  题1
                 *  题2
                 *  题3
             *  2.HTTP连接
             *   *  题1
             *  3.P2P文件分发
             *   *  题1
             *  4.TCP拥塞控制
             *   *  题1
                 *  题2
             *  5.TCP序号、确认序号
             *   *  题1
             *  6.IP分片
             *   *  题1
                 *  题2
             *  7.IP地址运算
             *   *  题1
                 *  题2
                 *  题3
             *  8.路由算法
             *   *  题1
                 *  题2
                 *  题3
             *  9.CRC编码【循环冗余码】
             *   *  题1
                 *  题2
             *  10.CSMA/CD计算
             *   *  题1
             *  11.信号码、传输码、频带传输
             *   *  题1
             *  12.信道容量
             *   *  题1
                 *  题2
                 *  题3
             *  13.UDP校验和
             *   *  题1

### 一、计算题 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 1]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 4]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 7]

### 二、简答题 ###

1.  简述混合拓扑结构网络的优缺点。  
    ![在这里插入图片描述][20210313132939668.png]
2.  简述环形拓扑结构网络的优缺点。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 8]
3.  简述网状拓扑结构网络的优缺点。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 9]
4.  简述树形拓扑结构网络的优缺点。  
    ![在这里插入图片描述][20210313133144940.png]
5.  简述星形拓扑结构网络的优缺点。  
    ![在这里插入图片描述][20210313133210876.png]
6.  简述总线型拓扑结构网络的优缺点。  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 10]
7.  SMTP的特点![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 11]
8.  P2P应用特点![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 12]
9.  传输层七大功能 ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 13]
10. 停-等协议工作流程

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 14]  
12. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 15]  
13. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 16]  
14. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 17]  
15. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 18]  
16. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 19]  
17. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 20]  
18. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 21]  
19. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 22]  
20. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 23]  
21. ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 24]

### 三、综合题 ###

#### 1.计算机网络性能 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 25]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 26]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 27]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 28]

> A将文件交付给C需要大约0.5s  
> 计算过程：4Mbit / 20Mbps + 4Mbit / 40Mbps + 4Mbit / 20Mbps - 0【开始时间】 = 0.2s + 0.1s + 0.2s - 0 = 0.5s  
> B将文件交付给D需要大约  
> 计算过程：  
> t = 0.1 + e B开始发  
> t = 0.2 + e 发送到路由器1  
> t = 0.2 + 0.1【排队0.1s（只有从一个口出的时候才要排队，如果不是一个口出就不用排队）因为A要在这个口走0.1s所以这里是+0.1s排队时间】从路由器1开始发  
> t = 0.3 + 0.05 到达路由器2  
> t = 0.35 + 0.1 到达D  
> 0.1s + 2Mbit / 20Mbps + 0.1s + 2Mbit / 40Mbps + 2Mbit / 20Mbps - 0.1s【开始时间】 = 0.1s + 0.1s + 0.1s + 0.05s + 0.1s - 0.1s = 0.35s

##### 题3 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 29]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 30]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 31]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 32]

#### 2.HTTP连接 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 33]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 34]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 35]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 36]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 37]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 38]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 39]

#### 3.P2P文件分发 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 40]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 41]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 42]

> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 43]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 44]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 45]

> cs模式：n = 10的时候  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 46]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 47]

> p2p模式：n = 10的时候![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 48]  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 49]  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 50]

#### 4.TCP拥塞控制 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 51]

> 计时器超时会把它变成1  
> 三次重复确认会把它变成一半  
> 阈值会调整为当前窗口的一半

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 52]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 53]

#### 5.TCP序号、确认序号 ####

停等协议、滑动窗口协议

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 54]

#### 6.IP分片 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 55]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 56]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 57]

![在这里插入图片描述][20210304123349286.png]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 58]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 59]

> 片偏移量=起始数据 / 8b

> 十进制转二进制：记住2的0次幂到7次幂。用十进制数依次减。  
> 二进制转十进制也是一样，把为1的加起来即可。

#### 7.IP地址运算 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 60]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 61]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 62]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 63]

![在这里插入图片描述][20210304211010254.png]

> 主机位 = 32 - 子网掩码中1的个数  
> 前缀或网络位的位数 = 子网掩码中1的个数

![在这里插入图片描述][20210304211031802.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 64]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 65]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 66]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 67]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 68]

##### 题3 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 69]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 70]

> 做题步骤：  
> 第一步：确定网络位，主机位  
> 第二步：确定网络地址（子网地址）  
> 第三步：确定广播地址  
> 第四步：确定子网掩码

#### 8.路由算法 ####

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 71]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 72]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 73]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 74]

> 答案：  
> w 6  
> w 5  
> w 3  
> w 2  
> w 3  
> w 7

![在这里插入图片描述][20210305134619362.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 75]

##### 题3 #####

![在这里插入图片描述][20210405161300851.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 76]

#### 9.CRC编码【循环冗余码】 ####

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 77]

> x的4次方 + x + 1得出下面的位串  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 78]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 79]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 80]

> 注意点：这里是二进制取余，不是数字的取余

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 81]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 82]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 83]

#### 10.CSMA/CD计算 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 84]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 85]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 86]

#### 11.信号码、传输码、频带传输 ####

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 87]

#### 12.信道容量 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 88]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 89]

##### 题2 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 90]

##### 题3 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 91]

#### 13.UDP校验和 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 92]

##### 题1 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzYwNjE1OA_size_16_color_FFFFFF_t_70 93]

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[20210313132939668.png]: /images/20221023/fa1b5e10490c4fa9a8ffb65ac0b2c33d.png
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[20210313133144940.png]: /images/20221023/e15807c57c3e482b9bb5878585d3178e.png
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