James Madison University College of Integrated Science and Engineering Departmen

Question

James Madison University College of Integrated Science and Engineering Department of Integrated Science and Technology Question 5 [1S points]: Answer all the following questions? 1. [3 pts] What does sudo mean/do? 2. 12 pts] What operating system are we using in Class? Lab TNS EnGeo 3022 for ISAT215 [4 pts] In lab01: you were asked to do some commands, explain cach of the following commands 3. .find/-name sources.list dig www.google.com mkdir isat215 . cd Documents 4. [2 pt] In lab02: you were asked to ping the host, what do we mean by this? 5. 12 pt] Explain one difference between linked and full clone? 6. [3 pt] What is the difference between selecting Power off versus Suspend for a VM? 7. [2 pt] how can we start wireshark from the terminal "What command"? 9 I Page

Explanation / Answer

1)

     commonly in linux if you are not the super user then you can run a program as super user using the command

sudo ,   eg:   sudo apt- get update

then it will promt for the super user password , if it is right it will continue

sudo   is actually the abbrevation of " super user do"   , basically it is the equvalent command runas in windows ie

runas admin

2)

   may be any distro of linux , like ubuntu

3)

   find / -name sources.list

     will locate and print all tlhe files named exactly sources.list in the root directory and subfolders

find commoly print all the files and folders under the directory specified if not from the current directory

* dig www.google.com

    dig    ( domain information groper ) is a command line tool for network administration for DNS querys

when you call dig www.google.com , that is you pass the domain name www.google.com to the dig command

then dig will displays the A record of the the domain ie ip address and additionaly ns , name servers that the site point to

*)   mkdir isat215

        mkdir is used to create new directory or folder ,, ie mkdir is   make directory

   so after executing the command it will create a new directory called isat215 at the current location

*)   cd ~/Documents

      cd means Change Dierctory that is when you run this command it will point to the directory ~/ Documents

      if you specify only Documents then it will check for the current directory for a directory named Documents

4) ping is a computer network administration software used to test the reachability of host , in this command ,it measures the round-trip time for the message sent from the originating host to the destination ,

eg:   ping www.google.com   or ip of google , it will sent 4 packets of data and test the reachability if the lose is < 100% there is connection

5)

The Full Clone — it is an independent copy of a VM( virtual machine) that shares nothing with the parent virtual machine after the cloning operation. Ongoing operation of a full clone is entirely separate from the parent virtual machine.

The Linked Clone — It is a copy of a VM that shares virtual disks with the parent VM in an ongoing manner. This conserves disk space, and allows multiple virtual machines to use the same software installation.

6)  

Suspend writes memory to disk and the Guest OS enters hibernate/sleep state

Shutdown writes nothing to disk and stops the Guest OS completely

7)   using the command wireshark

    like
wireshark [options] ... [ <infile> ]

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