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56k modem.2. Briefly describe the main content of network management.3. Briefly describe the principles and functions of VLANs.4. Illustrate the working principle and implementation process of vlsm.5. Compare the differences between connection-oriented and connectionless services. 5. Comprehensive questions (6 points for each question, 30 points in total)1. How does IEEE 802.3 Ethernet (etheernet) Media Access Control (MAC) work?2. compare and analyze the similarities and differences between br

bandwidth of 64 KB, which of the following four levels can be obtained for a digital signal at any time?2. If the generated polynomial is 10111 and the information bit is 11111011, obtain the code word generated after the cyclic percentile bit and added to the information bit. If the code is sent by HDLC (bit filling), obtain the sending sequence. 4. Application Questions (6 points per question, 30 points in total)1. Analyze the three concession algorithms commonly used by CSMA technology;2. An

Go to Windows Service series-add COM and Windows interfaces to windows Services When running a Windows service, we usually choose to run it in Non-window or non-Console mode. In this way, it is just a background program, there is no interface for interaction. So what should we do when we want to interact with the Windows Service in real time?Quick Solution for a

The use of swagger is often used in conjunction with JWT, while the general use of JWT will place tokens in the head, which is not convenient when using the swagger test, because cross-domain problems it does not customize the head parameter by default. And then go online to find, found that most of the domestic is to write a filter interface, and then add to the configuration. This greatly destroys the int

Http://www.cnblogs.com/easy5weikai/p/3340960.html WCF in VS, add service reference, address input http://ip/Service.svc, click to go, hint error, the contents are as follows: An error occurred while downloading ' http://127.0.0.1:7293/wcfserverrefwcflib.svc '