【单选题】What is use of Network Layer?
A.
To establish connection
C.
Network layer performs routing.
【单选题】What layer of the TMN (telecommunications management network) model does CTM fit into?()
A.
Network management layer
B.
Element management layer
C.
Business management layer
【简答题】If the ozone layer is destroyed by car, what will happen?
【简答题】第三章、北京冬奥会设____个大项,____个分项,____个小项。
【单选题】What architectural layer does a servlet belong to?
A.
The Presentation layer
【单选题】北京冬奥会共设几个大项?多少个分项?多少个小项?
【简答题】北京冬奥会设 个大项, 个分项, 个小项。