LAB 1

 

 

DKT 221/3
OPERATING SYSTEM PRINCIPLE
 
 
LAB MODULE 1

QUESTION 1

Ramli is a Windows 7 user. However, He decided to use Mac Os X. For the first time use he need to know where to get hardware information in Mac OS X ? Please brief detail step by step to help him. (answer step by step with screenshots).

 

In order to use the Mac Os X,Ramli first need to about it first a the best place to find information about it is the wikipedia..

 

There Ramli can find out if the Mac Os X is really better then Windows 7 and if his decision would help him in the long run.Below shows the difference between Windows and the Mac Os X Operating systems.

This tells us that if Ramli wanted to use the Mac Os X he needs to either buy a new computer or use a VMWare.

QUESTION 2

Sabrina love Espresso, a text editor Mac OS, but she don’t know how to install the software in Mac OS. (answer step by step with screenshots).

 In order to install the Espresso,Sabrina need to go to the text editor website at https://www.espressoapp.com .There Sabrina can click on the free trail to see if espresso is really good or not and if she finds that it satisfy all her need she can buy it for $99 so that she can use it uninterrupted and this will also supports its developer.

Below shows the price of espresso:

QUESTION 3

David is a Mac OS user likes to play angry bird. He download from internet angrybird.exe and try to install but fail. Why this happen? Any solution? (answer step by step with screenshots).

David can’t use the angrybird.exe that he got from the internet because that angrybird.exe is made only for specific platforms which is Windows

 

If it still failed , he can go to the Mac Apps Store and buy the game there for only $5

QUESTION 4

Nazri is a technical officer of All Technologies SDN BHD, he suspected someone has been used his computer and he want to check whether true or not. He using windows 7 Ultimate Edition. How can you help him? Please give detail step.

Ø    Toggle open Windows Logs on the left pane.

Ø    Left-Click on “System” and then look for the right-sidebar option to “Filter Current Log.” This allows you to isolate down to specific events, event types, and times.

Ø    In the “Logged” dropdown, select “Custom range...” and then “Events on” in the drop-down menu to narrow the search window to when you think your machine was accessed. Select OK.

Ø    From here, you can hit OK to simply browse all events—or you can filter by specific event IDs or task categories.

Generally speaking, he won’t understand what most of these events mean, and that’s ok. What’s more important is whether a ton of events appear during a time when his computer was powered off. If so, it’s possible it might have been used—he can also check by clicking on “Applications and Service Logs” in the left-hand sidebar, and then Microsoft > Windows > Diagnostics-Performance > Operational. From there, he can look for Event IDs 100 and 200 to see when his system powered up or shut down.

QUESTION 5

Azam using UniMAP computer library. Suddenly, he get this error. What are he trying to do? Any idea to solve this problem?

Azam was trying to open the Windows Task Manager and the error shows up because since he is using UniMAP’s computer library it means that he does not have the permission to do open that.This problem only occurs if he is using the University’s computer and not his own as the administrator has the permission to block standard user from opening certain programs so that students can’t mess with the computer.In order to fix this problem Azam need to contact UniMAP’s librarian or its Administrator in order to get the user Administrator permisson so that he can use the Windows Task Manager properly.

QUESTION 6

“top” is not recognized as an internal or external command, operable program or batch file.”

Zafirah try to get show process on terminal but get an error message. Why this happen? How to use this command?

This error happens because Zafirah’s PATH variable is not set properly,or she is overwriting it elsewhere in the script, so the command interpreted does no longer know where to search top.exe; . Other commands are cmd-internal ones so they can all easily found and since top is not an internal command and is expected  to be recognized as an external command.External commands are all on the PATH and if the commands aren’t found,it’s just because that that specific command is not on the PATH.

QUESTION 7

Iskandar is a Windows system administrator sent print screen from his computer. What are information he provided. What type of operating system that he used? What type of command line he used?

From this picture we can know that Iskandar used the Get-Member command and this command can only be used in cmd which is only in the windows operating system.From this get member command we can know that this is the things that happen behind the scene when a computer is starting up and it shows all the commands that run everytime we open up our computer.The first line of the results in the example contains one piece of very important information.TypeName tells us what type of object was returned.In this example,a System.ServiceProcess.ServiceController object was returned. This is ofren abbreviated as the portion of the TypeName just after the last period; ServiceController in this example.

QUESTION 8

Total                                used      free    shared    buffers    cached

Mem:                          :    3822     1999     1822          0            146       1004

-/+ buffers/cache               :     848      2973

Swap                               :    2001           0      2001

 

Suhaila are Ubuntu user. However he can’t explain information given from gnome-terminal. Please brief detail about the information given.

The first line of the free command's output contains the column headings. The second, labeled Mem: displays information on how physical memory is being used. The -m option displays the information in terms of megabytes rather than kilobytes (the default). Just looking at these numbers, we see that this system has roughly 4 GB of RAM and that nearly 50% of it is used. If we look at the Swap: line in the output, we see that the swap space appears to be unused. This system has 2 GB of swap, half the size of the physical memory -- following a common rule of thumb for setting up swap space. Between the Mem: and Swap: lines, we see a line labeled -/+ buffers/cache. This is probably the trickiest part of understanding free's output. This line shows how much of the physical memory is used by the buffer cache. In other words, this shows how much memory is being used (think "borrowed") for disk caching.

 

QUESTION 9

Follow the instruction and explain the result

    I.      On the keyboard: Ctrl + Alt + t

   II.      Type: less /proc/cpuinfo (answer with screenshots). 

What is FPU and PAE

    I.      FPU : Onboard FPU (floating point support)

   II.      PAE : Physical Address Extensions (support for more than 4GB of RAM)

QUESTION 10

Lisa open terminal and type “lscpu”. That actually she what to do?

lscpu gathers CPU architecture information from sysfs and /proc/cpuinfo. The command output can be optimized for parsing or for easy readability by humans.

QUESTION 11  

“dmesg grep | -i usb”. Please brief detail about the information given.(answer with screenshots).

QUESTION 12

Which is the core of the operating system?

 a) Shell

 b) Kernel

 c) Commands

 d) Script

The answer is B (Kernel). The kernel is a computer program at the core of a computer's operating system that has complete control over everything in the system