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Q1) Single-platter disk rotation speed: 7200 rpm number of tracks on one side of platter: 30,000 number of sectors per track: 600 seek time: 1 ms for every 100 tracks traversed Disk receives a request to access a random sector on a random track. assume the head starts at track 0.
a. What is the average seek time?
b. ave. rotational latency?
c. transfer time for a sector?
d. total ave. time to satisfy a request?
Suppose we have an eight CPU computer with four hard drives. MTTF of each cpu is 100000 hours and the MTTF of the hard drive is 50000 hours. What is the mttf of the system?
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New materials frequently lead to new technologies that change society. Describe how silicon-based semiconductors revolutionized computing.
In an age of virtual worlds where people are spending inordinate amounts. Are we voluntarily gravitating to this world and giving up our real world experiences for virtual ones?
Recognoze any potential vulnerabilities in making purchase with debit card, and which area of CIA triad they apply to.
Opinion regarding what security benefit(s) would be seen if modern operating systems followed four ring architecture.
Large population of ALOHA users manage to create 50 requests/sec., including both originals and retransmissions. Time is slotted in units of 40 msec. Compute the probability of exactly K collisions and then a success?
Let two main types of message exchange patterns in SOAP (and operation types in WSDL): (1) request-response and (2) one-way.
For a pattern P = 10011, and a message D = 10010011011, find, using modulo 2 arithmetic or polynomials, the CRC, then the string T to be transmitted.
What is the probability of occurrence of each of the four pairs in original sequence? Illustrate your work. What is the probability of occurrence of 0 and 1 in modified sequence?
Explain a business scenario and specify the types of constraints that would be appropriate to make sure the integrity of the database. For example, an airline reservation system should not make a reservation.
Write a program in assembly with the necessary comments that computes division of two integer numbers (Y by X) by consecutively subtracting X from Y.
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