For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to. 空白（4）处应选择（）

[判断题]巴塞尔新资本协议的核心就是鼓励银行投资和改善风险管理系统。（）

[问答题]轨道电路的传输通道钢轨，在站内、区间分布极广，是雷电侵入信号设备的重要途径之一。对轨道电路的雷电防护主要有哪些措施？

[单选题]根据对“十二五”时期经济社会发展趋势的总体判断。按照“十二五”规划纲要总体要求，综合考虑安全、资源、环境、技术、经济等因素，下列不属于2015年我国能源发展主要目标的是（　　）。

[问答题]钢中马氏体转变的特点。

[单选题]财务公目设立2年以上，且注册资本金不低于3亿元人名币，资本充足率不低于（  ）的可以申请设立分公司。

[单选题]脾脏循环血量占心排血量的（）

[单选题]教案又称（　　）。

[判断题]科学技术的发展对社会变迁只有正面影响。

[单选题]仲裁裁决书的尾部应由（）签名。

[判断题]压电式传感器不能测量恒定不变的信号

[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. Th...

[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. Th...

[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. Th...

[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. Th...

[单选题]For (1) service, we need a virtual-circuit subnet. Let us see how that works. Th...

[名词解释题]PVC（Permanent Virtual Circuit）永久虚电路

[名词解释题]PVC（Permanent Virtual Circuit）永久虚电路

[单选题]You would like to configure an ATM PVC with a virtual circuit identifier of 33 o...

[多选题]Which four statements about Ethernet virtual circuit （EVC） infrastructure are tr...

[单选题]You would like toconfigure an ATM PVC with a virtual circuit identifier of 33 on...