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【多选题】
根据旅行社服务对象和区域的不同,旅行社的经营范围包括入境旅游业务、出境旅游业务和国内旅游业务。下列属于入境旅游业务的是()。A.
旅行社组织北京大学外教到西安旅游
B.
中国旅行社组织北京大学外教到香港旅游
C.
山水国际旅行社组织港澳居民到大同旅游
D.
中国青年旅行社组织我们班全体同学到苏州旅游
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举一反三
【单选题】OSI is a theoretical model that shows how any two different systems can communicate with each other. Router, as a networking device, operate at the ______ layer of the OSI model.
A.
transport
B.
application
C.
network
D.
physical
【单选题】What is OSI Model?
A.
Open System Interconnection Reference model
B.
Output System Interconnection Reference model
C.
Open Service Interconnection Reference model
D.
Open Settings Interconnection Reference model
E.
Sorry, I dont know
【简答题】建立一对多关系时,一对应的表称为( ),而多对应的表称为( )
【单选题】The TCP/IP stack is a complete set of networking protocols. The OSI Model was meant to be a standardized way of connecting devices together. and most protocols have some direct correlation to the OSI ...
A.
physical layer
B.
data link Iayer
C.
application layer
D.
transport layer
【简答题】K m 值是指( )。
【单选题】● OSI is a theoretical model that shows how any two different systems can communicate with each other．Router, as a networking device, operate at the (71) layer of the OSI model． (71)
A.
transport
B.
application
C.
network
D.
physical
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