Advanced Operating Systems Project

 

There are 4 parts for the project. The question may be long to read but it’s not a heavy work because there are many examples and explanations for the each parts.

*Part 1.  The first part of this project requires that you implement a class that will be used to simulate a disk drive. The disk drive will have numberofblocks many blocks where each block has blocksize many bytes. The interface for the class Sdisk should include :

Class Sdisk







{







public :







Sdisk(string diskname, int numberofblocks, int blocksize);







int getblock(int blocknumber, string& buffer);







int putblock(int blocknumber, string buffer);







int getnumberofblocks(); // accessor function







int getblocksize(); // accessor function







private :







string diskname;        // file name of software-disk







int numberofblocks;     // number of blocks on disk







int blocksize;          // block size in bytes







};

An explanation of the member functions follows :

  • Sdisk(diskname, numberofblocks, blocksize)
    This constructor incorporates the creation of the disk with the “formatting” of the device. It accepts the integer values numberofblocks, blocksize, a string diskname and creates a Sdisk (software-disk). The Sdisk is a file of characters which we will manipulate as a raw hard disk drive. The function will check if the file diskname exists. If the file exists, it is opened and treated as a Sdisk with numberofblocks many blocks of size blocksize. If the file does not exist, the function will create a file called diskname which contains numberofblocks*blocksize many characters. This file is logically divided up into numberofblocks many blocks where each block has blocksize many characters. The text file will have the following structure :
     

                                                            -figure 0 (what I attached below)              

  • getblock(blocknumber,buffer)
    retrieves block blocknumber from the disk and stores the data in the string buffer. It returns an error code of 1 if successful and 0 otherwise.
  • putblock(blocknumber,buffer)
    writes the string buffer to block blocknumber. It returns an error code of 1 if successful and 0 otherwise.

IMPLEMENTATION GUIDELINES : It is essential that your software satisfies the specifications. These will be the only functions (in your system) which physically access the Sdisk. NOTE that you must also write drivers to test and demonstrate your program.

*Part 2.  The second part of this project requires that you implement a simple file system. In particular, you are going to write the software which which will handle dynamic file management. This part of the project will require you to implement the class Filesys along with member functions. In the description below, FAT refers to the File Allocation Table and ROOT refers to the Root Directory. The interface for the class should include :

Class Filesys: public Sdisk







{







Public :







Filesys(string diskname, int numberofblocks, int blocksize);







int fsclose();







int fssynch();







int newfile(string file);







int rmfile(string file);







int getfirstblock(string file);







int addblock(string file, string block);







int delblock(string file, int blocknumber);







int readblock(string file, int blocknumber, string& buffer);







int writeblock(string file, int blocknumber, string buffer);







int nextblock(string file, int blocknumber);







Private :







int rootsize;           // maximum number of entries in ROOT







int fatsize;            // number of blocks occupied by FAT







vector filename;   // filenames in ROOT







vector firstblock; // firstblocks in ROOT







vector fat;             // FAT







};

An explanation of the member functions follows :

  • Filesys()
    This constructor reads from the sdisk and either opens the existing file system on the disk or creates one for an empty disk. Recall the sdisk is a file of characters which we will manipulate as a raw hard disk drive. This file is logically divided up into number_of_blocks many blocks where each block has block_size many characters. Information is first read from block 1 to determine if an existing file system is on the disk. If a filesystem exists, it is opened and made available. Otherwise, the file system is created.The module creates a file system on the sdisk by creating an intial FAT and ROOT. A file system on the disk will have the following segments:

                                                             -figure 1 (what I attached below)           

  • consists of two primary data objects. The directory is a file that consists of information about files and sub-directories. The root directory contains a list of file (and directory) names along with a block number of the first block in the file (or directory). (Of course, other information about the file such as creation date, ownership, permissions, etc. may also be maintained.) ROOT (root directory) for the above example may look something like

                                                    -figure 2 (what I attached below)

    The FAT is an array of block numbers indexed one entry for every block. Every file in the file system is made up of blocks, and the component blocks are maintained as linked lists within the FAT. FAT[0], the entry for the first block of the FAT, is used as a pointer to the first free (unused) block in the file system. Consider the following FAT for a file system with 16 blocks.

                                                        -figure 3 (what I attached below)

  • In the example above, the FAT has 3 files. The free list of blocks begins at entry 0 and consists of blocks 6, 8, 13, 14, 15. Block 0 on the disk contains the root directory and is used in the FAT for the free list. Block 1 and Block 2 on the disk contains the FAT. File 1 contains blocks 3, 4 and 5; File 2 contains blocks 7 and 9; File 3 contains blocks 10, 11, and 12. Note that a “0” denotes the end-of-file or “last block”.
    PROBLEM : What should the value of FAT_size be in terms of blocks if a file system is to be created on the disk? Assume that we use a decimal numbering system where every digit requires one byte of information and is in the set [0..9].
    Both FAT and ROOT are stored in memory AND on the disk. Any changes made to either structure in memory must also be immediately written to the disk.
  • fssynch
    This module writes FAT and ROOT to the sdisk. It should be used every time FAT and ROOT are modified.
  • fsclose
    This module writes FAT and ROOT to the sdisk (closing the sdisk).
  • newfile(file)
    This function adds an entry for the string file in ROOT with an initial first block of 0 (empty). It returns error codes of 1 if successful and 0 otherwise (no room or file already exists).
  • rmfile(file)
    This function removes the entry file from ROOT if the file is empty (first block is 0). It returns error codes of 1 if successful and 0 otherwise (not empty or file does not exist).
  • getfirstblock(file)
    This function returns the block number of the first block in file. It returns the error code of 0 if the file does not exist.
  • addblock(file,buffer)
    This function adds a block of data stored in the string buffer to the end of file F and returns the block number. It returns error code 0 if the file does not exist, and returns -1 if there are no available blocks (file system is full!).
  • delblock(file,blocknumber)
    The function removes block numbered blocknumber from file and returns an error code of 1 if successful and 0 otherwise.
  • readblock(file,blocknumber,buffer)
    gets block numbered blocknumber from file and stores the data in the string buffer. It returns an error code of 1 if successful and 0 otherwise.
  • writeblock(file,blocknumber,buffer)
    writes the buffer to the block numbered blocknumber in file. It returns an appropriate error code.
  • nextblock(file,blocknumber)
    returns the number of the block that follows blocknumber in file. It will return 0 if blocknumber is the last block and -1 if some other error has occurred (such as file is not in the root directory, or blocknumber is not a block in file.)IMPLEMENTATION GUIDELINES : It is essential that your software satisfies the specifications. These will be the only functions (in your system) which physically access the sdisk.

*Part 3.   The third part of this project requires that you implement a simple shell that uses your file system. This part of the project will require you to implement the class Shell along with member functions. The interface for the class should include :

class Shell: public Filesys







{







Public :







Shell(string filename, int blocksize, int numberofblocks);







int dir();// lists all files







int add(string file);// add a new file using input from the keyboard







int del(string file);// deletes the file







int type(string file);//lists the contents of file







int copy(string file1, string file2);//copies file1 to file2







};

An explanation of the member functions follows :

  • Shell(string filename, int blocksize, int numberofblocks): This will create a shell object using the Filesys on the file filename.
  • int dir(): This will list all the files in the root directory.
  • int add(string file): add a new file using input from the keyboard
  • int del(string file): deletes the file
  • int type(string file): lists the contents of file
  • int copy(string file1, string file2): copies file1 to file2

IMPLEMENTATION GUIDELINES :

See the figure 4  (what I attached below) for the ls function of Filesys.

See the figure 5 (what I attached below) for dir function of Shell. 

See the figure 6 (what I attached below)  for main program of Shell.

*Part 4.  In this part of the project, you are going to create a database system with a single table which uses the file system from Project II. The input file will consist of records associated with Art History. The data file you will use as input consists of records with the following format: The data (180 records) is in date.txt file (what I attached below)

  • Date : 5 bytes
  • End : 5 bytes
  • Type : 8 bytes
  • Place : 15 bytes
  • Reference : 7 bytes
  • Description : variable

In the data file, an asterisk is also used to delimit each field and the last character of each record is an asterisk. The width of any record is never greater than 120 bytes. Therefore you can block the data accordingly. This part of the project will require you to implement the following class:

Class Table : Public Filesys







{







Public :







Table(string diskname,int blocksize,int numberofblocks, string flatfile, string indexfile);







int Build_Table(string input_file);







int Search(string value);







Private :







string flatfile;







string indexfile;







int IndexSearch(string value);







};

The member functions are specified as follows :

  • Table(diskname,blocksize,numberofblocks,flatfile,indexfile)
    This constructor creates the table object. It creates the new (empty) files flatfile and indexfile in the file system on the Sdisk using diskname.
  • Build_Table(input_file)
    This module will read records from the input file (the raw data file described above), add the records to the flatfile and create index records consisting of the date and block number, and then add the index records to the index file. (Note that index records will have 10 bytes .. 5 bytes for the date and 5 bytes for the block number.)
  • Search(value)
    This module accepts a key value, and searches the index file with a call to IndexSearch for the record where the date matches the specified value. IndexSearch returns the blocknumber of the block in the flat file where the target record is located. This block should then be read and the record displayed.
  • IndexSearch(value)
    This module accepts a key value, and searches the index file indexfile for the record where the date matches the specified value. IndexSearch then returns the block number key of the index record where the match occurs.

See the figure 7 (what I attached below) for the main program of Shell which includes a search command.

Corporate IT Security Audit Compliance

 

  • Read the Article: Whitley, J. (2007). PCAOB Proposes Audit Standards. Internal Auditor, 64(1), 15. (The article is attached) 
  • Write a summary analysis and discuss the standards formation. In your opinion are we creating too many standards or are they needed.   

QUALITATIVE Journal Submit Article

 

You will review both quantitative and qualitative research.  The topic is up to you as long as you choose a peer-reviewed, academic research piece.  I suggest choosing a topic that is at least in the same family as your expected dissertation topic so that you can start viewing what is out there.  There are no hard word counts or page requirements as long as you cover the basic guidelines.  You must submit original work, however,  and a paper that returns as a large percentage of copy/paste to other sources will not be accepted.  (Safe Assign will be used to track/monitor your submission for plagiarism. Submissions with a Safe Assign match of more than 25% will not be accepted.) 

Please use APA formatting and include the following information:

  • Introduction/Background:  Provide context for the research article.  What led the author(s) to write the piece? What key concepts were explored? Were there weaknesses in prior research that led the author to the current hypothesis or research question?
  • Methodology:  Describe how the data was gathered and analyzed.  What research questions or hypotheses were the researcher trying to explore? What statistical analysis was used?
  • Study Findings and Results:  What were the major findings from the study? Were there any limitations?
  • Conclusions:  Evaluate the article in terms of significance, research methods, readability and the implications of the results.  Does the piece lead into further study? Are there different methods you would have chosen based on what you read? What are the strengths and weaknesses of the article in terms of statistical analysis and application? (This is where a large part of the rubric is covered.) 
  • References   

Exp19_Excel_Ch05_ML1_RealEstate

  

Project Description:

You are a real estate analyst who works for Mountain View Realty in the North Utah County area. You have consolidated a list of houses sold during the past few months and want to analyze the data. For a simple analysis, you will outline the data and use the Subtotal feature. You will then create two PivotTables and a PivotChart to perform more in-depth analysis.

Research paper – Organizational leader and decision making

 Note: Please make sure read the question properly and No plagiarism and No grammar mistakes and APA 7 format. 

This week’s journal article focuses on attribution theory and how it influences the implementation of innovation technologies.  Two types of employee attributions are noted in the article (intentionality and deceptive intentionality), please review these concepts and answer the following questions:

  1. Provide a high-level overview/ summary of the case study
  2. Note how constructive intentionality impacts innovation implementations
  3. Find another article that adds to the overall findings of the case and note how attribution-based perspective enhances successful innovation implementations.  Please be explicit and detailed in answering this question.

Be sure to use the UC Library for scholarly research. Google Scholar is also a great source for research.  Please be sure that journal articles are peer-reviewed and are published within the last five years.The paper should meet the following requirements:

  • 3-5 pages in length (not including title page or references)
  • APA guidelines must be followed.  The paper must include a cover page, an introduction, a body with fully developed content, and a conclusion.
  • A minimum of five peer-reviewed journal articles.

The writing should be clear and concise.  Headings should be used to transition thoughts.  Don’t forget that the grade also includes the quality of writing. 

References to write:

 Required Reading:

Optional Resources: Chapter 3 & 4 Journal articles

COMPUTER

 

You work as an administrative assistant for the President of Bass University which employs around 300 faculty and staff. Your immediate supervisor, the President, has just informed you that the university is going to hold an employee appreciation party where all employees and their families are invited. Consequently, the President knows that you have a creative talent in creating invitation flyers and has asked you to create such a document as an invitation for all employees and their families to attend and has asked that you include at a minimum the following requirements for this employee appreciation party invitation.

  1. For content, the message within the employee appreciation party invitation should be written to attract as many of the 300 faculty and staff as possible to the party including any family members.
  2. The invitation should include an overall theme appropriate for the occasion.
  3. The invitation should only be 1 page.
  4. The invitation should contain a full-page border.
  5. The invitation should include a text watermark displaying in the background “Employee Appreciation Party.”
  6. The invitation should include a formatted title displaying the name Bass University using Word Art.
  7. The invitation should include a two-column table including general food available during the party.
  8. The invitation should also include some type of graphic in the form of a clip art and or a picture and as a tip, using clip art to represent the general menu in the table would be very creative. 
  9. When you have the invitation flyer ready, proof the document to ensure that content does not exceed 1 page and apply any appropriate formatting to text and graphical objects to ensure all content fits to 1 page and be creative. 

Assignment Expectations

Structure and Format: Follow all 9 steps using ideally Microsoft Word.

File name: Name your saved file according to your first initial, last name, and the assignment number (for example, “RHall Assignment 1.docx”)

Assignment 1: Network Infrastructure Design Diagram

 

Background: Kamehameha Institute is an organization that provides educational offerings to non-traditional students. The organization has tailored its unique educational offerings into the groups shown in Table 1 below:

Table 1. Kamehameha Educational Offerings.

GroupOfferingKamehameha BrandedFocused on the general public/provides services directly to its studentsCo-BrandedProvides the same services as Kamehameha Branded but resold by a third party and labeled as “…. Kamehameha Strong”White Label BrandedWhile the service offering is the same, these services are labeled solely with the third parties’ information

The State of Hawai’i regulates the educational sector, driving the need to ensure Kamehameha follows the State’s strict security and regulatory requirements. Kamehameha’s leadership is also very concerned with the threat posed by the online theft of their unique intellectual property. Additionally, the number of Hawai’ian entities breached by threat actors is on the rise. Thus, security, privacy, and compliance are all important considerations for the Kamehameha network architecture.

Your boss, the Kamehameha Institute’s Chief Operating Officer (COO) has tasked you to design a network infrastructure for three facilities located in the Hawaiian Islands of Honolulu, Hilo, and Lihue. The COO stipulated that you must separate the three group offerings in Table 1 and provide for strengthened defenses to protect Kamehameha’s cultural heritage. After meeting with the COO, the two of you drafted the following set of requirements for your network design:

· Each of the facilities has three floors:

· The first and second floor of each building requires 150 network connections each

· The third floor of each building houses a data center and requires 75 network connections

· The Honolulu location requires additional network connections for failover purposes

· The Hilo location will be the primary data center and house redundant database servers

· The Lihue location will serve as a failover data center and house the primary web servers (including the primary application and primary database servers)

· A constant connection between the three locations, carrying at least 75 Mbps of data

· All servers at all locations must have redundancy

· Protection from intrusions is required and should be documented

· A plan to verify security and failover measures is required

· Submission: Using the free tool, daw.io available at https://draw.io (no sign-in or registration required), create a network diagram (drawing) specific to the organization that encompasses the three facilities and also depicts ant necessary interconnections. Figure 1 shows the draw.io ‘new network diagram’ dialog window:

Figure 1. Draw.io New File Dialog Showing the Network Diagramming Templates

Your diagram should include enough detail to show the topology interconnections. The viewer should be able to understand the Kamehameha Institute’s network environment and be able to implement the architecture you develop. Ensure that you properly cite any external sources.

One of the keys to producing a viable network diagram is labeling the objects consistently and descriptively. Think about what you would want to know about a network device if you logged into it with little prior information. Consider location, floor number, or other pertinent information. At a minimum, include the following elements:

· IMPORTANT: Your network diagram must include an identifying label (e.g., callout box) that includes your class and section, assignment title, your name, and the date. Edit the items in italics. Your assignment will not be accepted if this element is missing:

Table 2. Example Network Diagram Callout Box.

CMIT 350 6980 Project #1 Network Diagram Student Name: Name Date: 6/22/2010

· Any necessary hardware

· Site-to-Site (WAN) connections (e.g., leased line connectivity, satellite, etc.)

· Annotate the following values for each of the Sites:

· Network ID

· Useable Range

· Subnet Mask

· CIDR Value

· Broadcast Address

· All devices require hostnames complying with the following naming conventions:

· Routers: Rx; where x is the site number incremented by a value of 1 for each router

· Switches: Sx; where x is the site number incremented by a value of 1 for each switch

· Servers: SRVx where x is the server number incremented by a value of 1 for each server

· For each site router, implement a private ip addressing scheme using a range suitable for corporate infrastructure and include the following:

· management vlan

· production vlan

High availability

When finished, export the diagram as a PDF document (Note: You will need to use this diagram again in Project 3, so ensure you save the xml source file!) and submit it to the Assignment folder. Figure 2 demonstrates how to export your draw.io diagram as a PDF document:

Figure 2. Draw.io ‘Export’ as Function to PDF

How Will My Work Be Evaluated?

1.1.3: Present ideas in a clear, logical order appropriate to the task.

2.2.2: Evaluate sources of information on a topic for relevance and credibility.

10.1.1: Identify the problem to be solved.

10.1.2: Gather project requirements to meet stakeholder needs.

10.1.3: Define the specifications of the required technologies.

13.1.1: Create documentation appropriate to the stakeholder.

13.2.1: Evaluate vendor recommendations in the context of organization requirements.