计算机网络题目（Computer network topic）.doc

计算机网络题目（Computer network topic） The computer network selects 100 ways 1. The main functions of network card are not included. A. Connect the computer to the communication medium B. Electrical signal matching C. Implement data transfer D. Network interconnection 2. One of the basic elements of computer network is. A. Data transfer B. The Shared C. File transfer D. control 3. The following options are devices that connect a single computer to the network. A. Video card B. Nic C. Router D. The gateway 4. The following are classified by network channel bandwidth. A. Star net and ring network B. Circuit switching and packet switching C. Wire and wi-fi D. Broadband network and narrow-band network 5. Divide the network into circuit switching network, packet switching network and packet switching network. A. The connection distance B. Service object C. Topology D. Data interchange mode 6. The following are the most basic servers. A. File server B. Asynchronous communication server C. Print server D. Database server The English abbreviation for metropolitan area network is. A. LAN B. WAN C. MEN D. MAN 8. The data can only be transmitted in a fixed direction. A. Simplex B. Half duplex C. Full duplex D. hybrid 9. The following options are not suitable for interactive communication and cannot meet the requirements of real-time communication. A. Packet exchange B. Message exchange C. Circuit switching D. Cell exchange 10. The data transfer unit in synchronous transmission is. A. B. Message or group C. D characters. frame 11. Standard coding of data in network transmission is implemented in the OSI system. A. Physical layer B. Network layer C. Transport layer D. The presentation layer 12. Rules governing computer communication are called. A. B. Medium C. D service. Network operating system 13. In the OSI model, the relationship between the NTH layer and its N + 1 layer is. A. N + 1 layer provides service B. The N + 1 layer will add a header from the n-tier information C. N layer