代理服务器就是内部局域网与Internet之间的中间代理机构，它负责把局域网内的Internet请求转发到Internet上，然后再把来自于Internet的应答信息转发给局域网中的计算机。
对1岁以内的婴儿进行健康保健，下列各项中正确的是（）。 应每半年进行一次智力筛查。 应每3个月进行1次体格检查。 应每6个月进行1次生长发育检测。 应至少在6-8个月时测一次血红蛋白。
电流的符号是（）。 I。 U。 R。
水泥要注意有效期，过期（） 必须复检。 继续使用。 不需要复检。 降低一个等级使用。
Acme is a small shipping company that has an existing enterprise network comprised of 2 switches；DSW1 and ASW2. The topology diagram indicates their layer 2 mapping. VLAN 40 is a new VLAN that will be used to provide the shipping personnel access to the server. For security reasons， it is necessary to restrict access to VLAN 20 in the following manner： - Users connecting to ASW1’s port must be authenticate before they are given access to the network. -Authentication is to be done via a Radius server： - Radius server host： 172.120.39.46 -Radius key： rad123 - Authentication should be implemented as close to the host device possible. - Devices on VLAN 20 are restricted to in the address range of 172.120.40.0/24. - Packets from devices in the address range of 172.120.40.0/24 should be passed on VLAN 20. - Packets from devices in any other address range should be dropped on VLAN 20. - Filtering should be implemented as close to the server farm as possible. The Radius server and application servers will be installed at a future date. You have been tasked with implementing the above access control as a pre-condition to installing the servers. You must use the available IOS switch features.
银行利率一般不包括（）利率。
