Operating System Questions and Answers May 17, 2021

Write a shell script for the following questions Accessing data from a file (the file could be database, log, or text file) Backup a file system User account management Disk space status Combining and Splitting files

Find the best system for protecting your company's data. Will you use a Windows, UNIX or Macintosh system?

Describe 5 properties of files in UNIX/Linux based operating systems and provide 2 different examples for the shell commands used to modify them.

Registries function differently between the three main operating systems (Windows, Unix/Linux and MacOS). As a result, digital forensic investigators must examine these systems in different ways to find the bits of evidence left behind by the operating system itself. You will consider forensic evidence located within the three major operating

What are the 7 different types of files of a Unix system Wharf is the interpretation of the file access permission 0264 specified in octal

What umask command should be executed to set the permissions bit mask to 037? With this mask, what default access privileges are associated with any new file that you create on the system? Why? Where would you put this command so that every time you log on to the system this mask is effective?

Strong mobility in UNIX systems could be supported by allowing a process to fork a child on a remote machine. Explain how this would work.

Assume you are using a Unix system (Tux machine for example). Which command c should you use to list all active TCP and UDP "connections"?

Describe system calls, UNIX signals, and their difference. What is the difference between local variables, global variables, and thread-specific data? Which type(s) of variables/data are shared among functions in a thread?

Unix systems programming the file /var/log/wtmp contains the recent login/logout activity for all the users. As this is not an ascii file, you need to use the last command to view the contents. Your supervisor requires a list of everyone who has logged in and out again between 1000 to 1500. Write a minimal Unix command using grep to accomplish

You have been called in to consult for a company that is running fifteen Windows 10 computers, two Linux computers, and three Mac OS X computers. Your boss wants all of these computers to be able to share files. What file sharing protocol do you recommend and why? Should you configure this network as a peer-to-peer network, or as a client-server

Describe the process of connecting a Windows 10, a popular Linux Distribution, and Mac OS X 10.x to a network utilizing various connectivity methods and architectures. At least one system must be configured in a client-server architecture with DHCP. At least one other system must be configured in a peer-to-peer architecture using static IP

In Python3 how would you parse each character of an http post to ensure the request is valid? Primarily concerned with POST /r1.html and Content-type: ...? Possibly by import re? POST /r1.html HTTP/1.1 Host: localhost:8001 Connection: keep-alive Content-Length: 32 Cache-Control: max-age=0 Origin: http://localhost:8001 Upgrade-Insecure-Requests: 1

Read the article under the link about the differences between Linux and the GNU system httpswww.gnu.orggnulinuxandgnu.en.html. And then answer the questions below. 1) What does GNU stand for 2) What is the GNU project 3) What are the differences between Linux and GNU system 4) Is Mac OS X considered to be a BSD Unix or GNU Linux 5) Is Ubuntu

Assume you have a file called 'stuff.dat'. What command(s) would you use to remove all duplicate lines from the file? You have a Windows formated file called 'notes.txt'. In Windows, newlines are marked with both (linefeed, LF) and (carriage return, CR), while in Unix/Linux/Mac OS X newlines are marked with just (and in older Mac OS versions,

Is there a way to ask for the user to first input their username for their computer and have that user name replace /random/ so that this directory will work regardless of who uses it?

It is possible to run Windows 7 on top of OS X on an Intel-based Apple Mac, using a hypervisor like VirtualBox, Parallels Desktop for Mac, or VMware Fusion. This works because both operating systems use the same x86 architecture and because it is possible to run Windows on a PowerPC-based Mac using a virtual PC. Explain with what type of

The final milestone will focus on the components of your operating system. This research will culminate a complete analysis of your chosen OS and will detail the file system, detail the program development, and address distributive systems of it. Review each milestone submission and review the instructor feedback to ensure you have fully addressed

Depending on your operating systems. TCPDump works for Mac OS X and Linux, and WinDump can be used for windows. You are the security analyst for a small corporate network. You want to find specific information about the packets being exchanged on your network using TCPDump. Imagine in your subnet of 192.168.0.0, there is a device with IP address

Search engine like Google helps a user to efficiently find web page containing information relevant to their queries. One of the basic operations to find relevant information is string comparison which requires some basic text preprocessing. Given the following query text Python install for MAC and three web pages with the following information 1.

The following figure shows maximum speedup characteristics with varying number of pro cessors. Explain why the speedups achieved in reality (shown in square legends) are significantly lower than the same estimated through Amdahls law (shown in triangular legends). Maximum speedup 14 12 10 642 10 15 Number of processors 20 25 Explain if the

GT Yummy Ice Cream is a company that produces ice cream and sells it to distributors in North America. The companys headquarters are in a large building in downtown Chicago. All of the senior managementthe president and all vice presidentsuse Macintosh computers with the Mac OS X operating system. The Marketing Department uses Windows 10, as does

Python 3, I am on mac os x and want to have python find and play the video using quicktime player. The video file(.mp4) will be found in the same folder as the .py that needs to play the video. How do I do this? I have seen people do this on windows but I can't find anyone doing it on mac.

If we take this software into account: Symantec Endpoint Encryption Sophos Safeguard Encryption How can we trust suppliers of whole disk encryption software in the lights of the recent NSA events? Are those providers really "secure" or do we miss something that should be obvious?

In the following circuit, a capacitive sensor is modeled by C, in series with resistance Rs. An identical sensor is used as a dummy unit to compensate for the undesired noise. A 5V 400Hz source is used to bias this arrangement. It is given that Rs R 10 Q2, R R3 1 kQ, and nominal capacitance of sensors is 10 pF. (a) Determine the baseline of the

A common misconception with Mac OS X systems is that they are not as susceptible to viruses and malware as PCs and therefore do not require users to apply additional security measures. Discuss whether or not you believe this is true. Provide a rationale for your response. From the e-Activities, evaluate the quality of at least two (2) of the

Make a complete list of metrics to compare each pair of systems below. Please first search on the Web to find some related product information and then list the metrics based on the techniques learned in class. Intel Core i7-6700T vs. Intel Core i7-6700K Oracle Database 12c vs. IBM DB2 11.1 Windows 10 vs. Mac OS X El Capitan Google vs. Bing

A monolithic kernel can be considered a compact kernel as it performs only the basic functions universal to all computers. (examples include Mac OS X or MINIX) and the microkernel kernel provides a virtual interface and are divided into kernel and user modes. (examples include Linux, FreeBSD, Microsoft Windows XP).

The internet is big, sprawling place with big routers move packets from place to place around the world. Using the tracers command in windows or the trace route command in Mac OS X and Linux, see how many hops it takes to get to various Web sites around the world.

Why do most linux commands work about the same on a Mac commputer as they do on a Linux system? I know they're both built on a UNIX foundation but are there any other reasons? Also, what are some Linux commands that also work on OS X Yosemite?

When you brought your new iMac home and completed the information in the Mac OS Setup Assistant, you did not have Internet access. You have signed up for Internet access and the setup instructions from your ISP request the hardware address (MAC address) of your Wireless network card. First research and then explain where you will find this

An operating system can have one of several structures. These structures are layered, microkernel, and modules. a. (5 points) Describe how the modular kernel is similar to both the layered structure and microkernel approach. b. (5 points) Mac OS X is considered to be a hybrid structured OS. It consists of two kernels. What are these OS kernels?

Write html/css/JS/PHP code to develop a form . User should be able to insert and update record in the database using this form.

Discuss Computer cable installations for a 4 deck Ship with about 10 stationary desktop computers, and printers on first two levels. With the top two levels with 15 workstations and two laser printers. Windows 7, Linux , and Mac OS X Lion? Please n thank you.

how to organize files and directories. Describe preferences for file names and how the concepts of a hierarchical directory structure could improve existing method of storage. If useing an alternative method, justify its use and benefits over and above basic approaches.

Use rubric to score the following operating systems and rank them from best to worst. Justify your rankings with evidence from industry documentation. Mac OS X El Capitan Windows 10 Windows 8.1 Windows Vista Windows XP Windows 98 Ubuntu Desktop 15.0 Fedora 23 Workstation

D&B Investigations was hired to conduct an incident response for a major oil company in North Dakota. The companys senior management had reason to suspect that one or more company employees were looking to commit corporate espionage. The incident response team went on-site, began monitoring the network, and isolated several suspects. They captured

Create a game in C++ on a mac using a library which is the same for both windows and osx, will the game be playable on both windows and os x or it will only work in os x because I done it in Xcode? Is SDL a great library to do your first game after learning the basics and syntax of C++ (I found syntax to be close to Java)?

What are some examples of important log files located on a Windows computer? What about a Mac OS X computer? Knowing this, would there be times when the absence of a log file could be equally important?

When a sending device is built on, say, a Mac OS X platform and a receiving device's platform is Windows, briefly explain how the content format of data exchanges could be implemented despite the platform and/or underlying processor differences.

The Windows operating system from Microsoft, Inc. runs about 90% of the worlds personal computers, so it is natural to think that Microsoft has a monopoly in the market for operating systems. According to economist Richard Schmalensee, an expert on oligopoly and monopoly, Microsofts profit-maximizing monopoly price is between $900 and $2,000.

Using Mac's Boot Camp, or virtualization software such as VMware, it's easy (and legal) to install Windows on a Mac It isn't quite as easy to install OS X on a PC, but it can be done. A PC that has been modified so that OS X can be run on it is called a Hackintosh. What are the benefits of tweaking 'a PC to run OS X? Is it okay to violate Apple's

The systemcall sequence for this program (which copies the contents of a source file to the destination file) is shown below. source file Example System Call Sequence Acquire input file name Write prompt to screen Accept input Acquire output file name Write prompt to screen Accept input Open the input file if file doesnt exist, abort Create output

How to migrate excel macros from Win7 Office 2010 to Mac Excel 2011?

Many Mac users are proud of the security on their Apple computers. One Sweden-based Mac enthusiast issued an open challenge to attackers to gain root control on his Mac Mini system, which he set as a server by giving local client access for the target system to the participants. The attacker who won the challenge took just 30 minutes to gain root

Various libraries, like pThread.h (and its associated library) in C, give languages exposure to the underlying systems threading system. How does working with Grand Central Dispatch differ from other threading systems you have used (if you have never used threading, read up on Java threading for a comparison)? Be sure to talk about the activities

Determine if the following problems exhibit task or data parallelism: a. Using a separate thread to generate a thumbnail for each photo in a collection b. Transposing a matrix in parallel c. A networked application where one thread reads from the network and another writes to the network d. The fork-join array summation application e. The Grand

EXPLAIN THE ANSWER OF THE FOLLOWING TOPICS 1.Files 2.Deleting temporary files in Windows 3.Deleting Files in Linux/UNIX 4.Defragmentation in Windows 5.Defragmentation in UNIX/Linux & Mac OS X 6.Backup 7.Virtual Memory Page/Swap file

Describe how MAC OS X encrypts files. What does it use for encryption? How can this be used by users to protect their data?

Describe how to access shared files from a Mac OS X client. How do you use the Linux command-line program for accessing SMB shares?

The Marketing Department uses the Mac OS X version 10.7 Lion computers. Because they plan to purchase new computers, what is the newest Mac operating system to which they can upgrade? What would be the advantage of this upgrade for their department? Answer should be dependent on what your book states to make this question easier. Your answer

Compare and contrast the Windows boot process to the Mac OS X Boot Process. Identify six items: 3 for compare and 3 for contrast.

Make a diagram for Architecture of Mac Os X and ios and then describe it's operation in accordance to the figure

Applications User Experience Application Frameworks Core Frameworks Kernel Environment (Darwin),Applications User Experience Application Frameworks Core Frameworks Kernel Environment (Darwin)

Compare and Contrast between the Hierarchical File System (HFS) and Hierarchical File System Plus (HFS+) in Mac OS X File Systems.

OMP (for C/C++/FORTRAN) and Grand Central Dispatch (for C/C++/Objective-C/Swift) are technologies with similar goals: To allow people who are not experts in parallel programming techniques to "parallelize" existing programs. Briefly describe how these technologies work, including a short example of each technique. same in Briefly explain the

iOS is really Mac OS X with some significant differences. Identify and explain any two such differences between the two.

Explain the best practices for creating backups in Windows, Linux, and Mac OS X in a paragraph or two.

Explain the difference between single and multi-tasking operating systems. Briefly explain the role the following operating systems played in the development of future operating systems. a. UNIX b. MS-DOS c. Apple II d. Mac OS e. IBM-PC f. Windows Ver. 1-3 g. Windows NT h. Mac OS X - Describe characteristics of the Linux operating system and

Suppose that g(x) denotes the predicate "x is good." Furthermore, suppose that good and evil are opposites. (a) Translate "Windows is evil. Moreover, Linux is good or Mac OS is good." into a propositional form. (b) Translate "Windows is evil and Linux is good, or Windows is evil and Mac OS is good." into a propositional form.

What's the Mac OS X keychain? Explain how it can be used by users to protect their credentials.

Explain the features of Linux OS and Mac OS. (e.g., GUI, multiuser capability, multitasking, portability, security, MAC OS X multi-touch gestures, and recent feature with Apple's mobile devices running iOS). Develop a plan to troubleshoot connectivity issues for a mobile device, a MAC laptop, and a Linux workstation. Discuss BOYD implementation

Find out the following information about mac os x Structure of the process in memory Structure of the process control block Process scheduling algorithm used

What is the file management of the Mac OS X El Capitan?

Describe how Mac OS X is considered a hybrid system.

Use Grand Central Dispatch to modify the following method definition so that reallyLongCalculation() will be performed in a background thread: func buttonPressed() { var result: Int result = reallyLongCalculation() resultTextField.text = "(result)" }

List all the Apple Mac OS versions. Describe the advantages and disadvantages of Mac OS X 10.11.

Create a Python module that reads Linux_syslog_ip_parser.py that reads syslog file and parses the IPV4 addresses and stores the result into a csv file. Your module should contain the following functions: a. linux_logfile_reader(filename) function that reads the syslog file and returns all IPV4 addresses b. count_ipfrequency(ip_list) function that

Explain the link between a unix and a mac os x operating system. Is the mac os x basically a unix operating system? I'm writing a paper on the mac os x, and want to know if that means I will pretty much be writing about the Unix system

1. What are the two most important criteria when deciding which computer to buy? 2. Why do laptop computers cost more than desktop computers? 3. List three reasons why it is easier to upgrade a desktop computer than a laptop computer: 4. Other than price, what factors might someone consider when deciding whether to buy a Windows laptop or a Mac OS

How do you quickly move from one item to the next on a MAC desktop without using the mouse? How do you customize the MAC OS X desktop? Why is the DOCK useful on the MAC OS X? What are all the folders located on the DOCK called? List five default apps that come with the MAC OS X? Why is the terminal useful to MAC OS X users? What is a Smart Folder

Based on your research, discuss the similarities among the Mac OS X and Linux OS hardware requirements. Make sure to include RAM, hard disk space, and graphic card requirements. Discuss the hardware incompatibilities between the two. Why does working with Apple hardware eliminates hardware compatibility issues? Discuss similar elements between the

The Marketing Department of the Merlinos Mills company strictly uses computers that run Mac OS X Mountain Lion and plans to upgrade to Mac OS X El Capitan. What steps should it follow for the upgrade? Why?

Derive the following relationship Pre VMA 100 b) 2. In a Superpave design for an asphalt mixture, the percentage of asphalt binder by total weight of asphalt mixture is 5.2. The bulk specife gravity of aggregate (Gb)2.536, the specife gravity of asphalt binder (G)1.020, and the density of water (yw)1.000 gcm. If the absorbed asphalt binder (Pta)

MSF is worlds one of the most used penetration testing framework. Metasploit helps security teams do more than just verify vulnerabilities, manage security assessments, and improve security awareness; it empowers and arms defenders to always stay one step (or two) ahead of the game. Goals of this assignment is to enhance your learning toward

Configure the DHCP server service for the 192.168.10+N.0 network. Use a DHCP range of 192.168.10+N.50 192.168.10+N.100. Configure the NFS server service to export the /backups directory (must be created) as read-write to all systems in the 192.168.10+N.0 network. Configure the Samba server service to share the local /docs directory (must be

Full version number for python 3 on the linux linode server. for example, if the version was "Python 3.4.1", the CTF answer would be ctf{3.4.1} b. Regarding the Linux Linode Server, (as well as most other Linux distros.) If you review the /etc/passwd file, you will noticed that it does not actually store any user passwords. It has usernames, user

Name a Linux package manager you have used or you are interested in. Why would you prefer it to the others? If your organization hires a new employee, what would you do to create a user account in the Linux system and add the account to a group? What commands would you use? What configuration files would you check and modify? What is your favorite

Write a command that will display the contents of the PRETTY_NAME field with or without quotes. A complete solution will not contain the 'PRETTY_PRINT field name, only the value portion of the line. /etc/os-release NAME="Red Hat Enterprise Linux Server" VERSION="7.6 (Maipo)" ID="rhel" ID_LIKE="fedora" VARIANT="Server" VARIANT_ID="server"

Explain how Linux script files are similar or different than batch files? Does the Linux user created have a secure location to store files? Explain how one Linux user can share data with another Linux user on the same computer; assuming they are logged on at different times. When referring to permissions in Linux they might also be called what?

A Linuxbased system is a modular Unixlike Operating System (OS). It derives much of its basic design from principles established in Unix during the 1970s and 1980s. The primary difference between Linux and many other popular contemporary OSs is that the Linux kernel and other components are free and opensource software. (a) Draw the appropriate

Explain why Linux skills are essential for network security monitoring and investigation Explain how a Linux administrator locates and manipulates security log files Explain the basic components of the Linux GUI Explain the basic operation of data networked communications. Explain how protocols enable network operations. Explain how specialized

Professor Grue was forced to retire. He wouldn't stop playing the Zork series games over and over. Professor Grue still has a user account on the linux linode server. (where he would store zork clues...). Identify the full linux path to the linux command described below. A top-like display of IP Tables state table entries

How to find and display Linux application configuration files in the terminal. How can you find and display Linux system configuration files in the terminal.

Windows and Linux are distinctly separate operating systems that use different boot processes, file systems, directories, and so on. However, some of the general steps used to examine computers for digital evidence apply to both systems. 1. Discuss the similarities between a Windows and a Linux forensic investigation. 2. Discuss the differences

Just like Windows, iOS, and Mac OS, Linux is an operating system. In fact, one of the most popular platforms on the planet, Android, is powered by the Linux operating system. An operating system is software that manages all the hardware resources associated with your desktop or laptop. To put it simply, the operating system manages the

Write a command to update user Password in Linux Operating system? Write a command to check IP address in Linux OS? Write a command to check processes in Linux OS? Which command is use to check current working directory in Linux OS? How to Print all users currently logged in Linux OS?

Write the Linux command that will display all .txt files. Write the Linux command to install the ffmpeg library. What does this Linux command do? $ cat file2 >> file1

How has Linux adoption evolved and what drives its popularity across industries, academia, and research? What are the key pros and cons of using Linux and its software development? How do these factors influence productivity and innovation here? How does Linux support collaborative open-source coding and technological progress among students,

Linux uses a monolithic kernel approach, but has some architecture that confers benefits typically associated with micro-kernels. What is it about the modern Linux architecture/ structure that is more similar to a micro-kernel than to the original, traditional monolithic kernel? The modern Linux architecture provides Linux some benefits typically

Examine the snippet below and answer the question that follows. roottecmint Red Hat Centos Fedora Debian Scientific Linux Opensuse Ubuntu Xubuntu Linux Mint Pearl Linux Slackware Mandriva cat linuxos.txt i. Write a Linux programme to count the number of lines, words and bytes in files ii. Write a Linux programme to display the longest line in

You are a forensics investigator at NOOK Inc. You have been conducting research about the Linux OS. You are explaining to your teammates the information that you have learned. The Linux file system has a hierarchical structure similar to other computer operating system file systems. The Linux file systems are also radically different from other

Write the command to get help about ls command from Linux manual Write the command to get help about cd command from Linux shell Write a command to search locate a command in Linux manual

Linux is a Unixlike, open source and communitydeveloped operating system (OS) for computers, servers, mainframes, mobile devices, and embedded devices. It is supported on almost every major computer platform, including Android smartphones, ARM and SPARC, making it one of the most widely supported operating systems. In a report of max. 3 pages

Give five reasons why you would use Linux to set up websites and go into detail. (for example if one answer is that its flexibility explain what makes Linux flexible)

Do some research online comparing two of these Linux distros. Then respond to the following questions: Which two Linux distros did you research? What are the strengths and weaknesses of each?

What is a data block in Linux file systems? Briefly explain NTFS compressed files. What are some of the main characteristics of Linux ISO images designed for computer forensics?

List 3 Linux and 3 Windows software firewalls that can be used to protect a SOHO network. Explain which you would choose to implement for a Windows network and for a Linux network.

Given Gsb 2.695 Bulk specific gravity of aggregate Determine Gmm 2.524 Theoretical maximum specific gravity Gmb 2.438 Bulk specific gravity of the mix Asphalt Content 5.20 Specific Gravity of Asphalt 1.037 VTM (voids in the total mix) VMA VFA (voids filled with asphalt) Effective Asphalt Content

Provide the steps for the following: In order to install software on the Linux servers, you need to list the commands that are needed for your Red Hat Centos and for the Ubuntu Linux servers. Since the package managers used for package installation on these two versions of Linux OS are different you need to list and describe the package managers

The VMA of a mixture is 16.0 and the air voids are 4.0 . If the aggregate has a specific gravity of 2.7, estimate the asphalt content by weight (assuming no absorption and specific gravity of asphalt 1.000).