快乐学习
一个网站喵查铺子（catpuzi.com）全搞定~
A、Physical layer
B、Data Link Layer
C、Network layer
D、Transport layer
喵查答案：Transport layer
……继续阅读 »
A、Network hierarchy
B、Protocols used at each layer
C、Agreement details
D、Functions implemented at each layer
喵查答案：Agreement details
……继续阅读 »
A、Connectionless and unreliable packet service
B、Connectionless and reliable packet service
C、Virtual circuit services with unreliable connections
D、Virtual circuit service with re……继续阅读 »
A、Router and switch
B、Domain name, network address and MCA address
C、Computer files and data
D、Computer software, hardware and data
喵查答案：Computer software, hardware and data
……继续阅读 »
A、A network connecting digital terminal devices such as computers within 10m of the user’s computer is a WSN
B、A network covering 10m to 10km is a LAN
C、A network covering 10……继续阅读 »
A、WAN is a public data network
B、WAN shall provide telecommunication-level services for users
C、The focus of WAN research is broadband core switching technology
D、The core technolo……继续阅读 »
A、Optical fiber transmission network is the foundation of broadband metropolitan area network
B、The integration of traditional telecommunication, cable TV and IP services has becom……继续阅读 »
A、Bottom layer of the OSI reference model
B、Establishing, managing and releasing physical connections between communicating hosts
C、Realizing transparent transmission of the bit st……继续阅读 »
A、Adjacent high layer is the network layer
B、Data link can be established after the physical connection is released
C、Adopting the method of error control and flow control to make ……继续阅读 »
A、Adjacent high layer is the transport lay
B、Selecting an appropriate transmission link for the packet through the communication subnetwork by routing selection algorithm
C、Realizi……继续阅读 »
A、Adjacent lower layer is the network layer
B、Adjacent high layer is the presentation layer
C、Providing reliable end-to-end connection and data transmission services for compute pr……继续阅读 »
A、7 layers from the application layer to the physical layer of the host shown by the dotted line of the OSI environment and the communication subnet
B、The physical transmission med……继续阅读 »
A、The data generated by the application process of source host is transmitted vertically and layer by layer from the application layer
B、The presentation layer only exchanges data ……继续阅读 »
A、Realizing distributed process-communication in network environment
B、TCP is a reliable, connection-oriented, byte-stream-oriented transport layer protocol
C、An unreliable, connec……继续阅读 »
A、The nth layer provides services for the n+1 th layer
B、The n+1 layer adds a header to the message received from the nth layer
C、The n-layer header is used to coordinate protocol ……继续阅读 »
