Which interface must a class implement so that instances of the class are notified after any object is addedto a session？（） javax.servlet.http.HttpSessionListener。 javax.servlet.http.HttpSessionValueListener。 javax.servlet.http.HttpSessionBindingListener。 javax.servlet.http.HttpSessionAttributeListener。
《绿色施工导则》所倡导的“四节――环保”的内容中不包括（） 节材。 节暖。 节地。 节电。 节水。
在网络的各级交换机上进行跨交换机的VLAN划分，这种方式属于（）措施。 物理隔离。 逻辑隔离。 交换隔离。 路由隔离。
topology exhibit： You work as a network engineer at . is a large international company with offices on all continents. You work at the Chicago Office. Your boss at ，Miss ，has asked you to install a Catalyst 3500 to provide for another 24 users. Your instructions are as follows： * install it in an IDF * extremely import to have the proper configuration of the Catalyst before it is placed into the product information * it should not participate in VTP * it should forward VTP advertisements that are received on trunk ports * all nontrunking interfaces， Fa0/1 to Fa0/24） should immediately to the forwarding state of the Spanning tree. * configure all Fast Ethernet ports （the user ports） such as they are nontrunking. * the fastEthernet interfaces 0/12 through 0/24 should be placed in VLAN 20
试述当代人文社会科学的发展趋势。
以下（）功能不属于交换机
