通信子网为网络源节点与目的节点之间提供了多条传输路径的可能性，路由选择是什么? 谁知道2010年计算机三级考试大纲卷
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C\uff0e\u6570\u5b57\u4fe1\u53f7\u4f20\u8f93\u6570\u5b57\u6570\u636e D\uff0e\u6570\u5b57\u4fe1\u53f7\u4f20\u8f93\u6a21\u62df\u6570\u636e
2\u3001\u5728\u4e0b\u5217\u591a\u8def\u590d\u7528\u6280\u672f\u4e2d\uff0c \uff082\uff09 \u5177\u6709\u52a8\u6001\u5206\u914d\u65f6\u9699\u7684\u529f\u80fd\u3002
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C\uff0e\u9891\u5206\u591a\u8def\u590d\u7528 D\uff0e\u6ce2\u5206\u591a\u8def\u590d\u7528
3\u3001\u4e0b\u9762\u5c5e\u4e8e\u6570\u636e\u901a\u4fe1\u4e2d\u5dee\u9519\u63a7\u5236\u6280\u672f\u7684\u662f \uff083\uff09 \u3002
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4\u3001\u6309\u8986\u76d6\u7684\u5730\u7406\u8303\u56f4\u8fdb\u884c\u5206\u7c7b\uff0c\u8ba1\u7b97\u673a\u7f51\u7edc\u53ef\u4ee5\u5206\u4e3a3\u7c7b\uff0c\u5373 \uff084\uff09 \u3002
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6\u3001Internet\u7f51\u662f\u76ee\u524d\u4e16\u754c\u4e0a\u7b2c\u4e00\u5927\u4e92\u8054\u7f51\uff0c\u5b83\u8d77\u6e90\u4e8e\u7f8e\u56fd\uff0c\u5176\u96cf\u5f62\u662f \uff086\uff09 \u3002
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8\u3001\u5728\u5e38\u7528\u7684\u4f20\u8f93\u4ecb\u8d28\u4e2d\uff0c\u5e26\u5bbd\u6700\u5bbd\u3001\u4fe1\u53f7\u4f20\u8f93\u8870\u51cf\u6700\u5c0f\u3001\u6297\u5e72\u6270\u80fd\u529b\u6700\u5f3a\u7684\u4e00\u7c7b\u4f20\u8f93\u4ecb\u8d28\u662f \uff088\uff09 \u3002
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9\u3001\u901a\u4fe1\u5b50\u7f51\u4e3a\u7f51\u7edc\u6e90\u7ed3\u70b9\u4e0e\u76ee\u7684\u7ed3\u70b9\u4e4b\u95f4\u63d0\u4f9b\u4e86\u591a\u6761\u4f20\u8f93\u8def\u5f84\u7684\u53ef\u80fd\u6027\uff0c\u8def\u7531\u9009\u62e9\u662f \uff089\uff09 \u3002
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B\uff0e\u5efa\u7acb\u5e76\u9009\u62e9\u4e00\u6761\u903b\u8f91\u94fe\u8def
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D\uff0e\u9009\u62e9\u901a\u4fe1\u5a92\u4f53
10\u3001\u82e5\u8981\u5bf9\u6570\u636e\u8fdb\u884c\u5b57\u7b26\u8f6c\u6362\u548c\u6570\u5b57\u8f6c\u6362\uff0c\u4ee5\u53ca\u6570\u636e\u538b\u7f29\uff0c\u5e94\u5728OSI \uff0810\uff09 \u5c42\u4e0a\u5b9e\u73b0\u3002
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B\uff0e\u4f7f\u7528\u536b\u661f\u901a\u4fe1\u6613\u4e8e\u5b9e\u73b0\u5e7f\u64ad\u901a\u4fe1\u548c\u591a\u5740\u901a\u4fe1
C\uff0e\u536b\u661f\u901a\u4fe1\u7684\u597d\u5904\u5728\u4e8e\u4e0d\u53d7\u6c14\u5019\u7684\u5f71\u54cd\uff0c\u8bef\u7801\u7387\u5f88\u4f4e
D\uff0e\u901a\u4fe1\u8d39\u7528\u9ad8\uff0c\u5ef6\u65f6\u8f83\u5927\u662f\u536b\u661f\u901a\u4fe1\u7684\u4e0d\u8db3\u4e4b\u5904
12\u3001\u5728\u8ba1\u7b97\u673a\u7f51\u7edc\u4e2d\uff0c\u80fd\u5c06\u5f02\u79cd\u7f51\u7edc\u4e92\u8fde\u8d77\u6765\uff0c\u5b9e\u73b0\u4e0d\u540c\u7f51\u7edc\u534f\u8bae\u76f8\u4e92\u8f6c\u6362\u7684\u7f51\u7edc\u4e92\u8fde\u8bbe\u5907\u662f \uff0812\uff09 \u3002
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13\u3001\u4e8c\u8fdb\u5236\u7801\u5143\u5728\u6570\u636e\u4f20\u8f93\u7cfb\u7edf\u4e2d\u88ab\u4f20\u9519\u7684\u6982\u7387\u79f0\u4e3a \uff0813\uff09 \u3002
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14\u3001\u4e0d\u662f\u5206\u7ec4\u4ea4\u6362\u7279\u70b9\u7684\u662f \uff0814\uff09 \u3002
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B\uff0e\u5c40\u57df\u7f51\u8986\u76d6\u6709\u9650\u7684\u5730\u7406\u8303\u56f4 C\uff0e\u5c40\u57df\u7f51\u5177\u6709\u9ad8\u6570\u636e\u4f20\u8f93\u7387
16\u3001\u5c40\u57df\u7f51\u7684\u62d3\u6251\u7ed3\u6784\u4e3b\u8981\u6709 \uff0816\uff09 \u3002
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20\u3001IEEE 802.4\u6807\u51c6\u4e2d\uff0c\u5173\u4e8e\u4ee4\u724c\u603b\u7ebf\uff08Token Bus\uff09\u8bf4\u6cd5\u4e0d\u6b63\u786e\u7684\u662f \uff0820\uff09 \u3002
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47\u3001\u4e0b\u9762\u4e0d\u662fB-ISDN\u91c7\u7528\u7684\u4f20\u8f93\u6a21\u5f0f\u7684\u662f \uff0847\uff09 \u3002
\uff0847\uff09 A\uff0e\u9ad8\u901f\u5206\u7ec4\u4ea4\u6362 B\uff0e\u9ad8\u901f\u7535\u8def\u4ea4\u6362
C\uff0e\u9ad8\u901f\u62a5\u6587\u4ea4\u6362 D\uff0e\u5149\u4ea4\u6362
48\u3001\u5f02\u6b65\u4f20\u8f93\u6a21\u5f0f\uff08ATM\uff09\u5b9e\u9645\u4e0a\u662f\u96c6\u5408\u4e86\u4e24\u79cd\u4ea4\u6362\u6280\u672f\u7684\u4f18\u70b9\uff0c\u8fd9\u4e24\u79cd\u4ea4\u6362\u6280\u672f\u662f \uff0848\uff09 \u3002
\uff0848\uff09 A\uff0e\u5206\u7ec4\u4ea4\u6362\u4e0e\u5e27\u4ea4\u6362 B\uff0e\u7535\u8def\u4ea4\u6362\u4e0e\u5206\u7ec4\u4ea4\u6362
C\uff0e\u5206\u7ec4\u4ea4\u6362\u4e0e\u62a5\u6587\u4ea4\u6362 D\uff0e\u7535\u8def\u4ea4\u6362\u4e0e\u62a5\u6587\u4ea4\u6362
49\u3001\u6709\u5173ADSL\u8bf4\u6cd5\u9519\u8bef\u7684\u4e00\u9879\u662f \uff0849\uff09 \u3002
\uff0849\uff09 A\uff0eADSL\u4e0e\u4ee5\u5f80\u8c03\u5236\u89e3\u8c03\u6280\u672f\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u5176\u4e0a\u4e0b\u884c\u901f\u7387\u662f\u975e\u5bf9\u79f0\u7684\uff0c\u5373\u4e0a\u4e0b\u884c\u901f\u7387\u4e0d\u7b49
B\uff0eADSL\u7684\u7279\u70b9\u662f\u5728\u7535\u8bdd\u7ebf\u4e0a\u63a5\u4e0aADSL MODEM\u540e\uff0c\u5728\u7535\u8bdd\u7ebf\u4e0a\u4ea7\u751f\u4e09\u4e2a\u4fe1\u606f\u901a\u9053\uff0c\u5206\u522b\u662f\uff1a\u9ad8\u901f\u4e0b\u884c\u901a\u9053\u3001\u4e2d\u901f\u53cc\u5de5\u901a\u9053\u3001\u666e\u901a\u7535\u8bdd\u670d\u52a1\u901a\u9053\u3002
C\uff0e\u76ee\u524dADSL \u5171\u6709 3 \u79cd\u56fd\u9645\u6807\u51c6 , \u63d0\u4f9b 2 \u79cd\u4e0d\u540c\u7684\u4f20\u8f93\u901f\u5ea6\u3002
D\uff0eADSL\u5173\u952e\u662f\u5728\u7535\u8bdd\u7ebf\u4e0a\u5206\u9694\u6709\u6548\u5e26\u5bbd\uff0c\u4ea7\u751f\u591a\u8def\u4fe1\u9053\uff0c\u8fd9\u4e3b\u8981\u662f\u901a\u8fc7ADSL\u8c03\u5236\u89e3\u8c03\u5668\u6765\u5b9e\u73b0\uff0c\u8be5MODEM\u4e00\u822c\u91c7\u7528\u4e24\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff1a\u65f6\u5206\u591a\u8def\u590d\u7528(TDM)\u6216\u56de\u6ce2\u6d88\u9664\u6280\u672f\u3002
50\u3001Cable MODEM \u53c8\u53eb\u7ebf\u7f06\u8c03\u5236\u89e3\u8c03\u5668\uff0c\u5176\u6700\u9ad8\u4e0a\u884c\u901f\u7387\u53ef\u8fbe10 Mb/s\uff0c\u4e0b\u884c\u901f\u7387\u5219\u66f4\u9ad8,\u8fbe30 Mb/s\uff0c\u8bf7\u95ee\u5b83\u662f\u57fa\u4e8e \uff0840\uff09 \u7f51\u7684\u5bbd\u5e26\u63a5\u5165\u6280\u672f\u3002
\uff0850\uff09 A\uff0eHFC B\uff0ePSTN C\uff0eATM D\uff0eFRN
\u5144\u5f1f\u597d\u597d\u770b\u770b\u5427\uff01\u6211\u6b63\u5728\u4e3a\u4e09\u7ea7\u8003\u54ea\u4e00\u4e2a\u800c\u82e6\u607c\u5462\uff1f\u52a0\u6cb9\u5427\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01\uff01
网络节点收到一个分组后，确定转发分组的路径。
通信子网和资源子网的划分是以功能为依据的。这里说的功能，可以理解为ISO/OSI模型（开放式系统互联通信参考模型）中的不同层次（物理层、数据链路层、网络层、会话层、表示层、应用层）。其中，通信子网对应于低三层（物理层、数据链路层、网络层），资源子网对应于高三层（会话层、表示层、应用层）。
扩展资料：
注意事项：
作为通信子网中的分组存储转发节点，完成分组的接收、校验、存储、转发等功能，实现将源主机报文准确发送到目的主机的作用。
在广域网中，通信子网由一些专用的通信处理机（即节点交换机）及其运行的软件、集中器等设备和连接这些节点的通信链路组成。资源子网由上网的所有主机及其外部设备组成。
参考资料来源：百度百科-通信子网
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