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What are proxy servers and how do they protect computer networks?
Proxy servers primarily stop external users who identifying the IP addresses of an internal network. Without information of the correct IP address, even the physical location of the network can't be identified. Proxy servers can make a network virtually invisible to external users.
Q. Explain about Flow Control? - Signifies to ask the transmitter to stop/resume sending in data - Required when DTE to DCE speed > DCE to DCE speed - (Exampl
Simplicity The advantage of this approach is the simplicity of receiver buffering. The receiver need not buffer out of order packets the sender must maintain the upper an
Control This field defines 6 different control bits or flags. These bits enable flow control connection establishment and termination connection abortion and the mode
What is one basic requirement for establishing VLANs? A VLAN needs dedicated equipment on each end of the connection that permits messages entering the Internet to be encrypted
What are reasons behind using layered protocols Reasons for using layered protocols, using them leads to breaking up design problem into smaller more manageable pieces and lay
Layers, Massages, Segments, Datagram's and Frames Figure 2.15 show the physical path data takes down a sending end systems protocol stack up and down the protocol stac
what is logical ring maintenance and how does it work>?
What do you mean by platform independence? Platform independence means that we can write and compile the java code in one platform (eg Windows) and can implement the class in a
Categories to access the Intranet Persons who can find access to the Intranet can be put into three categories. 1. Those who can enter the site 2. Those who can access
Applications of Fiber Optics - Backbone networks because of wide bandwidth and cost effectiveness - Cable TV - LANS - 100Base-FX (Fast Ethernet)
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