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1. Show how to defend against the DOS attack of { You are the system administrator for an provider that owns a large network (e.g., at least 64,000 IP addresses). Show how you can use SYN cookies to perform DOS attack on a web server
2. Describe how to modify a NAT router to prevent packets with spoofed IP addresses from exiting a private network.
3. Suppose the transaction ID of DNS queries can take values from 1 to 65,536 and is randomly chosen for each DNS request. If an attacker sends 1,024 false replies per request, how many requests should he trigger to compromise the DNS cache of the victim with probability 99%?
4. Describe a modification to the random port scan, as describe in previous exercise, so that it still use a randomly generated sequence of port numbers but will now have exactly the same number of attempted TCP connections as a sequential port scan.
make Use of an array for the mortgage data for the different loans. show the mortgage payment amount followed by the loan balance and interest paid for each payment over the term of the loan.
Program of five to ten lines in assembly language
What are some of the challenges being faced by organizations as they implement voice and data into a network.
Discuss the simplicity of the DTD compared to that of XML Schema. Has trade-off gone too far towards complexity in trying to overcome the limitations of the DTD.
application development and programming languagesprogramming languages have evolved since the first generation
State four benefits and one de-merits of utilizing the digital (rather than analog) techniques for transmission of the voice-telephone signals.
Suppose we have training data from the Gaussian distribution of known covariance S but unknown mean Mu.
Interactive computer systems could be categorized both in terms of interaction styles and interaction paradigms. This helps us to understand the problems and potential value of any interactive system design. We must also pay attention to the conte..
question1. in a client or server system client transmits request to the server server executes processing operation and
A stage of n x n banyan network consists of (n/2) 2 x 2 switching elements. The first stage directs packets to the right half of the network, the next stage to the correct quarter, and so on, until the packet is routed to the right output.
questionthe fibonacci sequence is series of integers.0 1 1 2 3 5 8 13 21 34 55 89observe the pattern? each element in
Find out the shortest paths from S to all the other nodes in the graph using Dijkstra Algorithm.
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