GSP 215 Entire Course NEW

DEVRY GSP 215 Week 1 -7 All iLab and Homework NEW
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GSP 215 Week 1 Homework Command Line in Windows and
Linux
GSP 215 Week 2 iLab Binary Representation of Information
GSP 215 Week 2 Homework Representing and Manipulating
Information
GSP 215 Week 3 Homework Representing and Manipulating
Information
GSP 215 Week 3 iLab Machine-Level Representation of
Programs
GSP 215 Week 4 Homework Optimizing Program Performance
GSP 215 Week 4 Lab Optimizing Program Performance
GSP 215 Week 5 Homework memory Leaks
GSP 215 Week 5 iLab
GSP 215 Week 6 Homework Assignment

GSP 215 Week 6 iLab Virtual Memory
GSP 215 Week 7 iLab
GSP 215 Week 7 HomeWork

DEVRY GSP 215 Week 1 Homework Command Line in Windows
and Linux NEW
215-week-1-homework-command-line-in-windows-and-
linux-recent
Week 1 HomeworkCommand Line in Windows and Linux
 Using Google, research what kernel operating systems
have been used in the video gaming industry. Describe the
architecture and details regarding its advantages or
disadvantages (i.e, consider Windows, Linux, based, etc.).
A minimum of two paragraphs of research information is
required, along with your own interpretation of the
content.
 Using Google, research the use of parallelism and
concurrency in video gaming today. Describe how each is
used in the building and implementation of video gaming
platforms. A minimum of two paragraphs of research
information is required, along with your own
interpretation of the content.

DEVRY GSP 215 Week 2 Homework Representing and
Manipulating Information NEW
215-week-2-homework-representing-and-manipulating-
information-recent
Week 2 Homework Representing and Manipulating
Information
Part A: Understanding the relationship between
hexadecimal, binary, and decimal representations are very
important when discussing machine-level programs.
1. Convert the following hexadecimal number to binary and
decimal: 5C.
2. Convert the following binary number to hexadecimal and
decimal: 00001110.
3. Convert the following decimal number to hexadecimal and
binary: 88.
4. Use two's complement to convert the following decimal
number to binary: -49.

Part B: Knowing the four operations & = AND, | = OR, ^ =
Exclusive OR and ~= NOT based on the example in the lecture,
solve the following problems.
Part C: Explain in your own words the difference between Big
Endian and Little Endian

DEVRY GSP 215 Week 2 iLab Binary Representation of
Information NEW
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recent
GSP 215 Week 2 iLab
Week 2 Lab—Binary Representation of Information
Scenario
In this lab, we will be using cygwin and Visual Studio to write
C++ code to illustrate floating point error and bitwise
operations
Part A:
The goal of this exercise is to introduce you to an important
aspect of numerical computing: numerical error. Games use
floating point as the primary number representation for almost
everything. Coordinate data stored as (x,y,z) is used to
represent vertices, which in turn are used to represent
triangles, which themselves are used to represent 3D objects.
Digital representation of any number must be accomplished
with a fixed number of bits, typically 32. However, one third,for

example, has no finite representation in fixed-point binary; that
is, it would require an infinite number of bits unless one uses
floating point. Computation with real numbers can quickly
produce results that cannot fit into 32 bits. When this happens,
numbers are rounded to the closest representable number.
This introduces numerical error. Evaluating a series of
expressions can result in a large error, as demonstrated in this
lab.
Use single precision floating point for all numbers. Variables
need to be declared as float, and constants should be followed
by an f suffix, as in 3.14f.
1. Compute the square root of 501.0f, and store the result in
a variable float x.
2. Multiply x by itself. Ideally, this would = 2. What do you
get?
3. Multiply x by itself again. Ideally, this would = 4. What do
you get?
4. Subtract x from the constant 251001.0f. Ideally, this
should = 0.0. What do you get?
5. Compute the multiplicative inverse of x (meaning 1/x). In
order to avoid dividing by 0.0, first test if x!= 0.0, and only
compute inverse if this is true. What do you get?
6. Copy and paste your source code into the lab report
below, and paste a screenshot. See an example of the
screenshot below.
C++ Code:
Screenshot:
See example below:
Part B:

Color displays use blends of red, green, and blue (RGB) light to
create the colors you see. The digital representation of this
concept is to store each red, green, and blue component as an
eight-bit unsigned number. The value 255 represents the
maximum displayable brightness of a single component, the
color 0 represents no intensity/light, and 128 is halfway
between the two extremes. Below are some triples of RGB
values and what color they represent.
0, 0, 0
black
255, 255, 255
bright white
255, 0, 0
bright red
0, 128, 0
medium green
128, 128, 0
medium yellow
A digital image is a two-dimensional array of RGB values, where
each RGB corresponds to an on-screen pixel.
For a better understanding, open an image using the program
paint (under the accessories menu). Select the color menu, then
edit colors, then define custom colors, and play around in the

right-hand side of the pane where you can type in RGB
component numbers to see what color they represent.
Because each component is only eight bits, the 24 bits required
for RGB is typically stored in a single 32-bit word rather than
separately. This is called a packed RGB format. This is what is
used to drive all computer displays. The hexadecimal
representation of orange (full red, half green, no blue) is
0x00FF0800.
The representation of half red, half green, half blue is 8421504,
in hexadecimal it is: 0x00808080.
Write two functions using only shifts and bit-wise logical
operations. One takes individual red, green, and blue
components as input and returns a single 32-bit word in
packed format. The second does the inverse, which is called
unpacking. Test your code with some simple examples. First
pack the red, green, and blue, and then unpack them to see that
you get what you started with. Pay attention to the types of all
input and return values to make sure that they use the least
number of bits required. All of these should be unsigned
numbers (there are no negative colors).
You will need to use shift operator. x=y<<4 assigns x the result
of shifting y to the left four bits. You will also be using bitwise &
(AND) and | (OR). Hint: in unpack, you will need to write code
like this: r2=(rgb>>16) &0xff; to unpack the value for red. To
pack the values, you will need something like this: rgb
= r<<16|g<<8|b;
#include <iostream>
using namespace std;

int pack (int r, int g, int b);

DEVRY GSP 215 Week 3 Homework Representing and
Manipulating Information NEW
215-week-3-homework-representing-and-manipulating-
information-recent
Week 3 Homework—Representing and
Manipulating Information
Structures are a mechanism for creating a
data type to aggregate multiple objects
into a single unit. All the components of a
structure are stored in a contiguous
region of memory and a pointer to a
structure is the address of its first byte. To
access the fields of a structure, the
compiler generates code that adds the
appropriate offset to the address of the
structure.

The example on the book on page 242
shows the following structure.
struct rec {
int i;
int j;
int a[3];
int *p;
};
This structure contains four fields: two 4-
byte int's, an array consisting of three 4-
byte int's, and a 4-byte int pointer giving a
total of 24 bytes. j is offset 4 bytes.
0 4 8 16 20
24
i j a[0] a[1] a[2] p
Assuming variable 4 is of type struct rec *
and is in register %edx, the following code
copies element r->i to element r->j.
movl (%edx), %eax // Get r->i
movl %eax, 4(%edx) //Store r->j To store into the field j, the
code adds offset 4 to the address of r

Consider the following structure
declaration containing a structure within
a structure, and answer the following
questions.
struct person{
struct size{
int height;
int weight;
}s;
int *hp;
int games[2];
}person1, person2;
1. How many total bytes does the structure require?
height weight hp games[0] games[1]
2. What are the offsets in bytes of the following fields?
s.height: ______________
hp:_______________
games[1]:______________

3. The compiler generates the following assembly code for
the body of str_init (shown below).
movq 16(%rbp), %rax //Get p1 into
register %rax
movl 4(%rax), %edx //Get p1-
>s.weight store in register %edx
register %rax
movl %edx, (%rax) //Store in p1-
>s.height
register %rax
leaq 4(%rax), %rdx //Compute
address of p1->s.weight in register %rdx
register %rax
movq %rdx, 8(%rax) //Store in p1-
>hp
4. On the basis of this information, fill in the missing
expressions in the code for str_init.
void str_init(person *p1)
{

p1->s.height = _____________;
p1->hp = _________________;
}
5. How would you call str_init with the structperson1 passed
to it?

DEVRY GSP 215 Week 3 iLab Machine-Level Representation of
Programs NEW
215-week-3-ilab-machine-level-representation-of-
programs-recent
Week 3 Lab Machine-Level Representation of Programs
TCO 3—Given the need to understand and describe
performance bottlenecks, acquire an understanding of how C
and C++ is translated into machine code.
Scenario
In this week’s lab, you will key in and compile a C++-supplied
program. Using the instructions provided, you will proceed
to inspect, comment, and produce representative assembly
code.
PART A:
We will look at C code versus machine code. Write the following
code in cygwin using vi and save it as code.c.
Part B:

Linux and Windows show assembly in different formats. The
code differences are shown below.
Copy the code below into a new Visual Studio Project. Compile
the C++ code. In the Solution Explorer, right click on the .cpp
file and choose properties.

DEVRY GSP 215 Week 4 Homework Optimizing Program
Performance NEW
215-week-4-homework-optimizing-program-
performance-recent
Optimizing Program Performance
A programmer must write correct code that is clear and
concise. There are also circumstances in which a
programmer must write fast and efficient code. Processing
video frames in real time must be fast. We will talk about
ways to optimize code.
Given the following code, perform these operations to
optimize the code. See Chapter 5 in the book for more details
on code optimization. Please use comments to document all
optimizations you have made to the code.
1. Using switch instead of if
2. Eliminating length calls out of the loop test
3. Put the most used variables first when initializing
variables

4. Use prefix operations rather than postfix operations
5. Loop unrolling—increase the number of elements
computed in each iteration of a loop (i.e. instead of processing
arrays separately, if you have two arrays of the same length,
process them in parallel)
6. Any other improvements you want to make
#include <iostream>
#include <vector>
#include <string>
#include <iostream>
#include <vector>
#include <string>
int main()
{

//This program stores the items purchased at the grocery
store. The price vector stores the prices for each item
purchased.
//The product name vector stores the products purchased and
the category vector stores which category the item falls under.
//Frozen foods have a 10% discount, snacks has a 5% discount,
and produce has a 15% discount.
//The total amount of items purchased should be calculated
with a 7% tax rate.
double sum;
double tax,totalAmount;
vector<double> price;
vector<string>productName;
vector<char> category;
price.push_back(4.5);
price.push_back(10);

DEVRY GSP 215 Week 4 iLab Optimizing Program Performance
NEW
215-week-4-lab-optimizing-program-performance-recent
Week 4 Lab Optimizing Program Performance
TCO 4—Given the importance of speculating runtime costs of
software, obtain an understanding of certain details of how
processors operate that impact code performance.
Scenario
In this week’s lab, you will look at timing operations and how
different operations can take a different amount of time to
complete.
Part A:

We will look at timing operations in C++. To see the difference
in operations, write C++ code to compare cout and printf, and
display the time difference for 100 cout operations and 100
printf operations. This code can be written in Visual Studio.
Below is how you would time the 100 cout operations in Visual
Studio. Add another for loop, and display time for both cout and
printf then comment about why you think there is a difference.
Part B:
Next, we will take timing a step further. There are a few
different sorting algorithms, and these algorithms have varying
time complexity. For this part of the lab, we will implement
bubble sort and quick sort. Research bubble sort and quick sort
algorithms, and implement them in C++. Fill a large array
(maybe 15,000 elements) of random numbers. Then time the
difference between bubble sort and quick sort 10 times, and fill
out the table. Next, run the program in release mode. Did you
notice a difference in time? Yes, release mode works much
faster

DEVRY GSP 215 Week 5 Homework memory Leaks NEW
215-week-5-homework-memory-leaks-recent
Week 5 Homework—Memory Leaks
Memory leaks are bugs in C++
applications that can cause performance
problems with your application or even
causing it to crash. A memory leak is the
result of failing to deallocate memory that
was previously allocated. In C++ the
commands
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
will enable the debug heap functions.
After enabling the debug heap functions,
place a call to _crtDumpMemoryLeaks()
before an application exit point.

Given the following code, run this code in
debug mode. The memory leak report will
appear in the Output Window with the
debug option. It should look something
like this.
The output will look like the following.
Detected memory leaks!
Dumping objects ->
{142} normal block at 0x0079A948, 25 bytes long.
Data: <> CD CDCDCDCDCDCDCDCDCDCDCDCDCDCDCD
{141} normal block at 0x0079A8F8, 20 bytes long.
Data: <Sheldon > 53 68 65 6C 64 6F 6E 00 CD
CDCDCDCDCDCDCD
Object dump complete.
The information displayed is: the memory
allocation number (142), block type
(normal), the hexadecimal memory
location (0x0079A948), and the size of the
block (25 bytes long).
Rewrite the code to remove the memory
leaks, and submit the completed code
with a screenshot of the output window
with no memory leaks detected.

#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>
#include <string>
void memLeak()
{
int *p = new int;
char * string1 = new char[20];
char * string2 = new char[25];
strcpy(string1, "Sheldon");
string2=string1;
delete p;
}
int main(intargc, char* argv[])
{
memLeak();
_CrtDumpMemoryLeaks();

return 0;
}
C++ code with no memory leaks:
Screenshot:

DEVRY GSP 215 Week 5 iLab Memory NEW
215-week-5-ilab-memory-recent
Week 5 Lab—Memory
TCO 6—Given the fundamental role of processes in organizing a
computer's flow of execution, be able to explain how
multitasking/multiprocessing works, including what
constitutes a context switch.
TCO 7—Given that performance of a game is dominated by the
speed of various parts of the memory system, understand
algorithms used to manage memory on a computer.
Scenario

In this week’s lab, you will create a memory viewer using a
combination of C and C++ to create an interactive tool for
visualizing memory.
This lab is based on this video series by Professor Michael
Vaganov:
https://www.youtube.com/playlist?list=PLL2gGK4F_vGcPgzzP
PJMdQS9uW3DO_u_F
Please watch the video series, which will walk you through
creating a memory viewer step by step. Each video builds on
the successive one until you have an interesting memory
viewer at the end.
The program starts with Hello World in C++.
#include <iostream>
int main()
{
std::cout<<"Hello world"<<std::endl;
return 0;
}
Work through the code with the author. Submit your code and
screenshot of the final project to the Dropbox.

DEVRY GSP 215 Week 6 Homework Virtual Memory NEW
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Week 6 Homework—Virtual Memory
This week's homework problems will be completed in the
book.
Complete problems 9.12 and 9.13 below.
Review Section 9.6.4 as a guide.
Problem 9.11 is done below to help you.
9.11. For the given virtual address, indicate the TLB entry
accessed, the physical address, and the cache byte value
returned. Indicate whether the TLB misses, whether a page

fault occurs, and whether a cache miss occurs. If there is a
cache miss, enter – for cache byte returned. If there is a page
fault, enter - for PPN, and leave parts C and D blank. You will
need to use the tables on page 796 for PPN translation (page
table b).

DEVRY GSP 215 Week 6 iLab Virtual Memory NEW
215-week-6-ilab-virtual-memory-recent
Week 6 Lab—Virtual Memory
TCO 9—Given the need to support the runtime creation of
varying quantities of data objects, learn how dynamic memory
allocation can provide this capability in a very efficient way.
TCO 8—Given the need to understand virtual memory, describe
how memory allocation and paging are used to give a computer
program access to more memory than physically available.
Scenario
In this week’s lab, you will override the new and delete
operators for an implementation of linked list.
Rubric

Point distribution for this activity
Lab Activity
Document Points possible Points received
Code and screenshot 40
Total Points 40
Generally, the default implementation of new and delete is
sufficient for a given program. At times, you may want to
specialize memory allocation for advanced tasks. You may want
to allocate instances of a certain class from a particular
memory pool, implement your own garbage collector, or
caching.
We will override the new and delete operator in this lab. When
overriding these operators, both need to be overridden. The
new operator allocates memory and creates an object. The
delete operator deallocates memory.
We will be implementing a linked list class and overloading the
new and delete operator. We can improve the speed of

allocating new nodes by keeping a list of deleted nodes and
reusing the memory when new nodes are allocated.
The code for the linked list is below. You may also use your own
implementation of linked list.
The overloaded new operator will check a freelist to recycle a
node before going to the heap and getting one that way. The
delete operator will add the node to the freelist.
Hint: Use the following in the Node class.
void * operator new(size_t);
void operator delete(void*);
static void printFreelist();
After the class Node definition, be sure to set the freelist to
NULL.
Node* Node::freelist=NULL;
Implement Node::printFreelist() as well, and in the Main,
include calls to
Node::printFreelist();
to see the nodes in the free list.
Original C++ Code:
#include <iostream>

DEVRY GSP 215 Week 7 Homework Networking Commands
NEW
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Week 7 Homework—Networking Commands
This week's homework will focus on basic networking
commands.
Display IP configuration settings.
1. Open a Windows CLI (Start->run type in cmd and
press enter)
2. The ipconfig command is used to view a computer's
IP address. When your system is resolving the DNS
addresses incorrectly, flushing the DNS using ipconfig –
flushdns is a helpful command. To release and renew an
IP address, use ipconfig – release and ipconfig –renew.

What does subnet mask mean? What does default
gateway mean?
3. Ping is used to verify connectivity to a network.
Ping a web address of your choice, and press control + c
to stop it.
Paste the screenshot below.
4. Run traceroute on a website address of your choice
(control + c to stop). Example:
tracert devry.edu
5. Nslookup is helpful to know if the DNS is working
correctly. Run nslookup against a hostname to see if the
name is resolved. Example: nslookupwww.cnn.com
6. The netstat command has many options and gives a
lot of information about your network. The –a option
will show you the open ports on your computer.

7. If you have a Windows machine, go to the control
panel on your computer. Then pick network and sharing
center.
Under view your active networks, you will see a link
next to connections (in the above picture it is wired).
Click on the link you see next to connections, then click
on properties. Select Internet protocol version 4
(TCP/IPv4), and click properties.
Note that changing these settings may disconnect you,
so click cancel rather than OK.
• To obtain IP settings automatically, click obtain an IP
address automatically, and then click OK.
• To specify an IP address, click use the following IP
address, and then in the IP address, subnet mask, and
default gateway boxes, type the IP address settings.
Take a screenshot of your settings.
Why would you choose

DEVRY GSP 215 Week 7 iLab Networking and a Tiny Web
Server NEW
215-week-7-ilab-networking-and-a-tiny-web-server-
recent
TCO 1—Given a computing environment with multiple
operating systems, demonstrate the ability to use the command
line interface in Windows and Linux, and compile and run a
program using the command line.
TCO 10—Given the importance of networking in game design,
explain how computers are connected to a network, and
summarize basic networking fundamentals, terminologies,
protocols, and devices.
Scenario

In this week's lab, we will create two C programs to use with
networking commands. The first program will read a domain
name or dotted-decimal address from the command line and
display the corresponding host entry. The second program will
be a tiny web server used on localhost.
Part A:
In this lab, we will explore DNS mapping by creating a file
named hostinfo.c. This program will read a domain name or
dotted-decimal address from the command line and display the
corresponding host entry. Local host will always map to
127.0.0.2.
Enter the following C code into notepad. Save the file in the
cygwinhomeusername folder on your computer (ie:
C:cygwin64homegina) as hostinfo.c.
Open Cygwin, and compile the program: gcchostinfo.c –o
hostinfo.
#include <stdlib.h>
#include <stdio.h>
#include <arpa/inet.h>
#include <netdb.h>

Run the program with the following domain names, and note
the results. Also, choose some of your own.
Part B:
Read pages 919-927 in the book. We will be developing the tiny
web server listed in the book. This web server supports the GET
method. It will look for an HTML file in the current directory
and will display the web page in a web browser. Please study
and review the code to understand what it is doing. Feel free to
extend the code as well.
Copy the C code below into notepad. Save the file in the
cygwinhomeusername folder on your computer (i.e.,
C:cygwin64homegina) as tiny.c.
Compile the program: gcctiny.c –o tiny.
, at a cygwin prompt, type ./tiny 10000.
This will start the web server listening at port 10000.
Open your web browser, and type the following in the address
bar: http://localhost:10000/home.html.
This will open your website using your own tiny web server. To
stop your tiny web server, press control + c in cygwin.

Include a screenshot below of your web page working in a
browser.
C Code:
//Tiny web server code
#include <stdlib.h>
#include <stdio.h>

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