Select the three best answers which best describe Private Network-to Network Interface （PNNI） in an ATM network.（） It is the Routing protocol used between ATM switches。 PNNI uses the same Dijsktra algorithm for SPF calculation。 PNNI and OSPF use the same Database to make cohesive decision for packet forwarding。 PNNI measures line capacities and delays in addition to simple cost metric。
Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（） VLANs have not been created yet。 An IP address must be configured for the port。 The port is currently configured for access mode。 The correct encapsulation type has not been configured。 The no shutdown command has not been entered for the port。
美国芝加哥学派的代表沙利文，提出（）的口号，为后来的国际主义建筑样式奠定了基础 “少即是多”。 “形式服从功能”。 “少即是乏味”。 “机器美学&rdquo。
回转波的形成和特点。
《中华人民共和国学位条例》颁发于（）年。 1980。 1992。 1975。 1991。
当32×2.5Gb/s系统在G.652光纤上的色散容限值为12800ps/nm时，可传送的最大目标距离是（）
