Section
Line
Frame
Path
DS1
第1题：
The following three concepts are essential to the OSI model:service,interface and
A． networks
B．applications
C．protocols
D．layers
第2题：
The IoT architecture can be divided into three layers.()is the key layer to realize the foundational capabilities which support the electronic devices interact with physical worl
A.
B.Sensing layer
C.Network layer
D.Application layer
E.Operation layer
第3题：
A、three minutes' away
B、three minutes' walk
C、three minute's away
D、three minute's walk
第4题：
A.AMI
B.ESF
C.DUS
D.SSM
E.B3ZS
F.B8ZS
第5题：
Despite the wonderful acting and well-developed plot the _________ movie could not hold our attention.
A) three-hours B) three-hour
C) three-hours’ D) three-hour’s
选B
用破折号连接的作形容词不用复数.
第6题：
The X.25 standard specifies three layers of functionality.Which layers of the OSI model correspond to the X.25 layers?
A．the Physical, Network, and Session Layers
B．the Physical, Data Link, and Network Layers
C．the Physical, Data Link, and Transport Layers
D．the Physical, Session, and Presentation layers
第7题：
A、three quarters of an hour time
B、three quarter's of an hour time
C、three quarters of an hour's time
D、three quarters'of an hour's time
第8题：
The following three concepts are essential to the OSI model: service, interface and
A．networks
B．applications
C．protocols
D．layers
第9题：
A.line
B.path
C.circuit
D.section
E.segment
第10题：
A. The application layer
B. The session layer
C. The data link layer
D. The transport layer
E. The network interface layer
F. The physical layer