大学计算机课程考试！求大神给个答案

202.196.126.130是C类IP地址，该网络的网络地址是202.196.126.0，广播地址是202.196.126.255.

如果子网掩码是255.255.255.224，那么其它有效子网地址如下：

        子网地址                                           广播地址

1. 202.196.126.0/27                          202.196.126.31/27
   

2. 202.196.126.32/27                        202.196.126.53/27

3. 202.196.126.64/27                        202.196.126.95/27

4. 202.196.126.96/27                        202.196.126.127/27

5. 202.196.126.128/27                      202.196.126.159/27

6. 202.196.126.160/27                      202.196.126.191/27
   

7. 202.196.126.192/27                      202.196.126.223/27

8. 202.196.126.224/27                      202.196.126.255/27

是C类IP地址。