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Scope and lifetime are distinct yet related issues in programming languages. Languages can sometimes make design decisions that cause a conflict between the scope and the lifetime of variables. Java's decision to allow classes to be defined inside a method illustrates this conflict. Consider the following example:
class AnonymousInnerClassInMethod { public static void main(String[] args) { int local = 1; Comparable compare = new Comparable () { public int compareTo(Object value) { return (Integer)value - local; } }; System.out.println(compare.compareTo(5)); } }
Why does this code fail to compile? Explain the reason behind this failure in terms of scope and lifetime.
Describe the threat of account harvesting. Suggest a method to execute an account harvesting attack on a Windows platform.
Assuming that the initial values of the cache tags and the cache lines are completely arbitrary, Also, show how the cache tags will change for each of the above steps. You should justify your answer.
Business problems arise in a multitude of ways inside an organization; sometimes, they stem from the need or desire to do something completely new, sometimes they stem from the need or desire to improve an existing operation.
Show the even-parity encoding of the following bit string, in the form of bytes: 0100101011101011101010110110 (break it up into pieces of data large enough to encode as several parity-encoded bytes.
What are some of the benefits of modularity? 2. What is functional abstraction? 3. What is information hiding?
describe method to keep the data local caches in sync across multiple processors (i.e. cache coherence). discuss implementations issues
Input Validation: The program should not accept quantities, or wholesale or retail costs, less than 0. The program should not accept dates that the programmer deter- mines are unreasonable.
the weaknesses that arise in Elgamal encryption if a public key of small order is used. We look at the following example. Assume Bob uses the group Z ? 29 with the primitive element ?= 2. His public key is ?= 28.
Determine the instruction format, considering that there is no bit for indirect addressing.
Write a program to clear Register A, add five to Register A 10 times, and place the result in RAM Location $2000. Use a RAM location for holding the counter.
The Becoming Company is a full service provider for a line of developmental training and inspirational materials including videos, music, and books called Drive Change.
Suppose an algorithm has two parts. The first part involves sorting and takes (10 nlog n) steps, where n is the input size. What is the asymptotic time complexity of the overall algorithm, in Big Theta notation?
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