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Nt 1420 Unit 3 Answers

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Short Answers Unit 3
1. WHAT TWO THINGS MUST YOU NORMALLY SPECIFY IN A VARIABLE DECLARATION?

The variable’s name
The variable’s data type

2. WHAT VALUE IS STORED IN UNINITIALIZED VARIABLES?
=0
Research Unit 3

1. WHAT IS REVERSE ENGINEERING?

The process of taking a piece of software or hardware an analyzing its functions an information flow and then translating those processes.

2. WHAT ARE THE ADVANTAGES AND DISADVANTAGES TO USE REVERSE ENGINEERING TO DISCOVER THE LOGICS OF A SOFTWARE PROGRAM?
Advantages- one can repair certain bugs, see how a program operates, and improve the operation of the program.
Disadvantages- certain other bugs may be introduced during the process
3. FIND ANY ONE TOOL AVAILABLE TO PERFORM REVERSE ENGINEERING OF SOFTWARE PROGRAMS. LIST AT LEAST FIVE FEATURES OF THAT TOOL.

GDB-GNU DEBUGGER

 Allows taking a program and breaking it down to the assembly language level

 Debug your programs

 Examine your programs

 Command line based tool which makes it easier to issue different parameters

 Debug the kernel of any operating system

UNIT 3: ALGORITHM WORKBENCH
3. SET B= (2 + A)
SET A= (B + 4)
SET B=( A/ 3.14)
SET A= (8-B) 4. A. Set result = x + y 12 = 4 +8
B. Set result = z * 2 4 = 2 * 2
C. Set result = y / x 2 = 8 / 4
D. Set result = y – z 6 = 8 – 2

5. Dim cost1 As Double = 0
6. Dim cost1 As Integer = 0
7. Dim cost1 As Integer = 27
8. Total = 10 + 14
9. due = downPayment – total
10. totalFee = subtotal * 0.15

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