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1. A 255-GB disk has 65,536 cylinders with 255 sectors per track and 512 bytes per sec- tor. How many platters and heads does this disk have? Assuming an average cylinder seek time of 11 ms, average rotational delay of 7 msec and reading rate of 100 MB/sec, calculate the average time it will take to read 400 KB from one sector.
2. Which of the following instructions should be allowed only in kernel mode?
(a) Disable all interrupts.
(b) Read the time-of-day clock.
(c) Set the time-of-day clock.
(d) Change the memory map.
What is a prototype and how might it be used in the interface design process. Should an organization have internal interface design standards. What are the benefits and drawbacks of these standards. Give examples of what some of these standards mi..
1. Write a program to evaluate a post?x expression. 2. a. Write a program to convert an in?x expression that includes (, ), +, -, *, and / to post?x.
How is it possible that Access can use dates in calculations - What are five mathematical operators available for use in Access calculated fields?
Q8. Farmer Bob, Farmer Jane and Farmer Jose run a cow farming co-op. For every cow they keep the cow's name, age (or date of birth), breed and numbered plastic ear tag. The each of the three farmers own many cows and share some of the cows wit..
Give CFG for the language L={x %u03F5 {0,1}*/x has unequal number of 0's and 1's}
If Abby is communicating, so is Randy. Vijay and Kevin are either both communicating or neither is. If Heather is communicating, then so are Abby and Kevin. Describe your reasoning.
Summarize the difference between cyber crimes and cyber-related crimes. On cyber crimes, define cyber trespass, cyber privacy and cyber vandalism. On cyber-related crimes explain the difference between cyber-assisted and cyber-enhanced crimes.
Design a rotating disk where the number of bits per track is constant
Using the Web, locate vendors of biometric products. Find one vendor with a product designed to examine each characteristic mentioned in your textbook. What is the CER associated with each product? Which would be more acceptable to users? Which..
Write a C++ program that read an integer.The code will check if the number is divisible by 3, it will print the number is divisible by 3.
Perform the physical design and implementation using SQL Data Definition Language
Suppose you have a class CBird, as follows, that you want to use as a base class for deriving a hierarchy of bird classes
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