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Think about the following threats to Web security and describe how each is countered by a particular feature of SSL.
[1] Man-in-the-middle attack: An attacker interposes during key exchange, acting as the client to the server and the server to the client.[2] Password sniffing: Passwords in TTP or other application traffic are eavesdropped.[3] IP spoofing: Uses forged IP addresses to fool a host into accepting bogus data.[4] IP hijacking: An active, authenticated connection between two hosts is disrupted and the attacker takes the place of one of the hosts.[5] SYN flooding: An attacker sends TCP SYN messages to request a connection but does not respond to the final message to establish the connection fully. The attacked TCP module typically leaves the â??half-open connectionâ? around for a few minutes. Repeated SYN messages can clog the TCP module.
Describe three solutions to critical section problem Explain the different methods used to handle deadlocks Distinguish between "No preemption" and "circular wait" in deadlocks prevention
Explain the following terms in relation to linear programming problems- (1) decision variables (2) objective function
How many page faults would occur under pure demand paging (all frames are initially empty), assuming four frames are available, under FIFO, LRU.
Explain the concepts of consumable and reusable resources
CPU with interrupt-driven I/O is busy servicing disk request. While CPU is midway through the disk-service routine, another I/O interrupt occurs. What occurs next?
Suppose shared bank account exists between husband and wife and concurrently husband calls withdraw() function and wife calls deposit(). Explain how race condition is possible and what might be done to prevent race condition from occuring.
What is Life Cycle Costing. Describe briefly the methodology for Life Cycle Costing. What are the criteria to consider when a procurement officer is faced with the decision of procuring a used equipment instead of a new one.
Discuss the advantages and disadvantages to combining voice, video, and data communications into one interface such as Skype.
Assume two hosts A and B are connected via router R. A-R link has infinite bandwidth; A-R link has infinite bandwidth; draw curves for throughput, delay, and power, each as function of load.
Forking the child process
Analyze the Internet and construct a one page document describing how security is maintained while transacting business over the Internet.
when a process requests for I/O operations, it will suspend and another process will need to be selected for execution. What is the CPU utilization for a round-robin scheduler.
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