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What do mean by tunnel mode?
This is a mode of data exchange wherein two communicating computers do not use IPSec themselves. Instead, the gateway that is linking their LANs to the transit network makes a virtual tunnel that uses the IPSec protocol to secure all communication that passes by it.
PHYSICAL ADDRESSING IN A WAN: The physical addressing in a WAN is same as in LAN in the following way: The data is send in packets equivalent to frames. Every pack
Question: a) Briefly describe how the file system is organized in Unix. b) What is the importance of the "touch" command. Give one of its disadvantage. c) Name three d
Application of Satellite Communication started with the installation and commissioning of STD- “B” Earth Station having 11m diameter antenna in 1982, Initially with to only three
On a LAN where are IP Datagram transported?
Cisco Express Forwarding CEF is a new method of switching that available in IOS, its overcome the drawbacks of fast switching method In IOS packet switching, There are thre
Q. Show the Vulnerability of the Internet? More vulnerable than private network. Wide inter-network connection. Easy access by mass public world-wide. Lack of build in
Assuming that TCP Reno is used, consider the following diagram illustrating the behaviour of congestion window, and answer the questions below. a) What was the value of sl
Q. Example of go back - N protocol? The window size is 4. A sender has sent frame 6 as well as the timer expires for frame 3 (frame 3 not ACKn'd). The sender goes back as we
What are Triggers and Rules? Triggers are special user defined actions generally in the form of stored processes that are automatically invoked by the server based on data rel
Disadvantages of Fiber Optics - Installation/maintenance - Unidirectional - Cost
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