简述计算机网络按拓扑结构分为哪几种。
["\uff081\uff09\u661f\u578b\u7f51\u7edc\u3002\n\uff082\uff09\u603b\u7ebf\u578b\u7f51\u7edc\u3002\n\uff083\uff09\u6811\u578b\u7f51\u7edc\u3002\n\uff084\uff09\u73af\u578b\u7f51\u7edc\u3002\n\uff085\uff09\u7f51\u72b6\u578b\u7f51\u7edc\u3002"]