Module 3 day 2: supplemental reading for mobile device storage through supplemental reading for windows package dependencies

Question 1

what is often limited on mobile devices?

Answer 1

storage space

Question 2

what is a best practice for space on mobile devices before installing new apps or saving new files?

Answer 2

Ensure that there is sufficient space on a mobile device

Question 3

on a mobile device, what should the first troubleshooting step for an installation or saving problem be?

Answer 3

Check if there is enough storage space for the install or save. Mobile devices can experience unusual problems when space runs low, and sometimes there is no error message.

Question 4

what is something that can fill up the last bit of storage space and cause unusual performance problems on a mobile device? a way that limitations can be reached without the user intentionally adding programs or files.

Answer 4

automatically generated temporary cache files can fill up the storage face

Question 5

What can you do to free up space for new items? what can you delete?

Answer 5

delete unused or rarely used apps and files

Question 6

what should users use instead of storing the files locally on the mobile device. To prevent loss, protect files.

Answer 6

use cloud storage for photos, videos, other.

Question 7

but mobile device operating systems automatically analyze how much space apps occupying storage?

Answer 7

iOS and iPadOS.

Question 8

with Apple, where can you see how much storage is available?

Answer 8

through device settings menu, on iTunes, or through a computer with a connection to the mobile devic.

Question 9

What can you do to Apple mobile devices to configure them to preserve space?

Answer 9

configure them to free up space automatically when they are low on storage space. The device will select files that can be downloaded again if needed for removal.

Question 10

what will apple devices remove if they need to free up space?

Answer 10

files that can be reinstalled again as needed. could be caches, local copies of a file that is stored on the cloud, streamed videos and music, and temp files.

Question 11

what will Apple devices do, or rather what should they do, when storage space is almost full to give the user an opportunity to select specific apps and files for removal?

Answer 11

generate an alert.

Question 12

how to check storage space available on iPhones and iPads

Answer 12

Navigate to Settings > General > iPhone Storage or iPad Storage.

The first item on the Storage screen should be a visual indicator of how much storage space has been used out of the total storage space available on the device. It might be color coded to delineate which types of items are occupying the used storage space, such as apps, messages, media, system data, etc.

Check the RECOMMENDATIONS section near the top of the screen (if available). This section might suggest automatically deleting messages that are over a year old or automatically uninstalling unused apps when space is running low. Be sure to investigate the suggested items for deletion to ensure that the items will not be missed before clicking Enable.

Review the next section, which lists the apps installed on the device. The file size and date last used will be listed for each app. If you open the detailed view for an app, you might see options like:

Offload the app - Removes the app only, but keeps app data and documents.

Delete the app - Removes the app, its data, and related documents.

Select the best option that suits the device user’s needs.

Move any photos, videos, and other user-created files to iCloud storage and remove the copy stored on the device’s storage space.

Question 13

What type of mobile OS allows manufacturers to change the OS configuration?

Answer 13

open operating system, open OS

Question 14

Where should most versions of Android have Storage listed?

Answer 14

immediately under settings, unless it is Samsung, which puts it under either Device Maintenance or Device Care

Question 15

What do you do if you can’t get Android device settings easily?

Answer 15

check manufacturer’s manual

Question 16

How to navigate storage for Android

Answer 16

Navigate to Settings > Storage

The Storage screen may display a visual indicator illustrating how much storage space has been used out of the total storage space available on the device. Like Apple devices, the graphic might be color coded to indicate which types of USER DATA are occupying the used storage space, such as images, videos, audio, documents, apps, etc.

Click the CLEAN UP button under the graphic (if available).

A new window should open to show a list of items that Android has analyzed and RECOMMENDED FOR CLEANUP. Next to each item may be a button labeled CLEAN UP. Scroll down to the bottom of the list to find the SPECIAL CLEANUPS section.

For some items, like Junk Files, clicking the CLEAN UP button will automatically remove the files.

For other items, like Images or Videos, clicking the CLEAN UP button will give the user a checklist of specific items to select for removal. Be sure to investigate the suggested items for deletion to ensure that the items will not be missed by the user.

Question 17

what is comprised of one or more files that is compressed into a single file?

Answer 17

an archive

Question 18

what are the core or source software files compressed into one file?

Answer 18

package archives

Question 19

what is referred to as installing from source?

Answer 19

installing software from a source archive

Question 20

what are .tar, .zip, and .rar examples of?

Answer 20

archive types

Question 21

what must you first do when you install software from an archive?

Answer 21

first extract the contents of the archive so you can see the files inside.

Question 22

What does the installation of archive files depend on?

Answer 22

the type of code it was written in

Question 23

What can be archived?

Answer 23

anything. pictures, software, music files.

Question 24

what have lots of different ways they can be extracted?

Answer 24

archive types

Question 25

what is used for file archiving and unarchiving in Windows?

Answer 25

7-zip

Question 26

How do you use 7-zip in the gui?

Answer 26

you move the cursor to the file in the file explorer, right click, select 7-zip, and extract here.

Question 27

what file extraction tool is open source?

Answer 27

7-zip

Question 28

how do you make a new zipped or archived folder? in the gui in file explorer

Answer 28

make a new file, name it, add files that you want to put in it into it by dragging and dropping them, right click the folder, 7-zip, add to archive, and it’ll make a new zipped folder for you.

Question 29

how can you send a bunch of files over email?

Answer 29

combine them in one archive and send one single zipped file instead of many individual files.

Question 30

what version of PowerShell can extract and compress archives from the command line?

Answer 30

version 5.0 or greater

Question 31

what is the command for compressing an archive?

Answer 31

Compress-Archive

Question 32

What is the format for making a zip file in PowerShell? take everything from the oldfoldername directory and compress it into the archivename.zip

Answer 32

Compress-Archive -Path C:\Users\home\oldirectoryname\oldfoldername\ ~\Newdirectoryname\archivename.zip

Question 33

what does teh Compress-Archive cmdlet ignore when creating or updating the archive file?

Answer 33

hidden files and folders.

Question 34

what is also available to use in Linux?

Answer 34

7-zip

Question 35

what is the Linux version of 7-zip?

Answer 35

p7-zip-full

Question 36

what happens when you use the command 7z and the flag e, and then the file you want to extract?

Answer 36

you extract a file using 7zip. e for extract.

Question 37

how would you extract the myarchive.tar folder in linux?

Answer 37

7z e myarchive.tar

Question 38

what tool do lots of people use in Linux to extract zip files, which is often already installed on most linux distros?

Answer 38

the tar command

Question 39

what might different archive types require in linux?

Answer 39

different commands in order to extract

Question 40

what is tar short for in linux?

Answer 40

tape archive

Question 41

what is a single file that contains any number of individual files plus information to allow them to be restored to their original form by one or more extraction programs?

Answer 41

archive

Question 42

what are convenient for storing files as well as for transmitting data and distributing programs?

Answer 42

archive files

Question 43

what is tar’s basic syntax?

Answer 43

tar option(s) archivename filename(s)

Question 44

what was originally designed for backups on magnetic tape?

Answer 44

tar

Question 45

what are archives created with tar referred to as?

Answer 45

tarballs

Question 46

what does tar not do?

Answer 46

compression

Question 47

what does tar require the use of?

Answer 47

one or more options, unlike many other commands

Question 48

what do the -c and -f options do with tar?

Answer 48

create tar files. former: tar make archive. latter: the next argument will be the name of the new archive file

Question 49

what will tar -cf do?

Answer 49

make an archive, and then the next argument, or piece of data in the command, will be the name of the new archive file.

Question 50

what will the command
tar -cf file.tar file1 file2 file3
do?

Answer 50

make an archive file called file.tar out of the three files, file1, file2, file3, in your current directory

Question 51

is it necessary for the new file to have the .tar extension?

Answer 51

no

Question 52

why is the .tar extension useful?

Answer 52

it allows the type of file to be visually identified.

Question 53

what must be the last option used after .tar?

Answer 53

-f, or else the system will not understand the file name.

Question 54

what option with tar will display a list of the files that are included in the archive?

Answer 54

-v

Question 55

how can you use tar to make archives from the contents of one or more directories?

Answer 55

the result is recursive, and includes all objects in the directories, in each level.
ex:
tar -cvf dir.tar dir1 dir2

Question 56

how can you use tar with a wildcard to make an archive of every object in the current directory?

Answer 56

tar -cf *

Question 57

what does tar make by default?

Answer 57

an archive of copies of the original files/directories, while retaining the originals.

Question 58

how can you remove files when using tar?

Answer 58

the –remove-files option.

Question 59

what option is used to unpack a tar file?

Answer 59

-x for extract and -f are required, -v is optional to provide a running listing of the files being unpacked.

Question 60

what option can be used alone with tar?

Answer 60

–help, or –version

Question 61

what usually rely on other pieces of code to work?

Answer 61

packages of software

Question 62

what might a game program need to do to make the physics of the game work?

Answer 62

some calculations

Question 63

what might a game program have to do its calculations?

Answer 63

a dependency on a physics engine, and a rendering library to show the graphics

Question 64

What is Counting on other pieces of software to make an application work, since one bit of code depends on another in order to work..

Answer 64

Having dependencies

Question 65

A way to package a bunch of useful code that someone else wrote

Answer 65

library

Question 66

how is a library bundled?

Answer 66

to a single unit

Question 67

What are shared libraries called on Window?

Answer 67

DLL, dynamic link library

Question 68

What is one useful feature of a dynamic link library?

Answer 68

the same DLL can be used by lots of different programs, which means that shared code doesn’t need to be loaded into memory for each application that wants to use it, and less memory is used overall

Question 69

what do Windows applications typically have located together in a single installation package, along with an MSI file that tells Windows how to pull it together?

Answer 69

many dependencies

Question 70

what file tells Windows how to put it all together in a program?

Answer 70

MSI file

Question 71

What will a given installation package have?

Answer 71

all resources and dependencies like DLL in package.

Question 72

What manages dependencies and makes sure they are available to the program?

Answer 72

The windows Installer

Question 72

What was DLL hell?

Answer 72

different programs you wanted to run on your machine needed different versions of DLL or else they wouldn’t understand what was going on if you downloaded a new DLL to play a game as opposed to using a media player.

Question 73

What are most resources and shared libraries managed by in Windows to fix DLL hell?

Answer 73

Side by side assemblies, or SXS

Question 74

Where are most SXS stored?

Answer 74

in a folder at C:\Windows\winsxs

Question 75

If an application needs to use a shared library to perform a task what will the library be specified in?

Answer 75

a manifest

Question 76

What tells Windows to load the appropriate library from the SXS folder?

Answer 76

Manifest

Question 77

What supports access to multiple versions of the same shared library automatically?

Answer 77

sxs

Question 78

what bundles dependencies in installation packages?

Answer 78

sxs

Question 79

what can you use to install and maintain the libraries and other dependencies that your software needs to use?

Answer 79

Windows Package manager

Question 80

what cmdlet will let you find software and its dependencies? PowerShell

Answer 80

Find-Package

Question 81

what is the name we give to Windows PowerShell commands that use the verb-noun format. There are hundreds, and you can write your own.

Answer 81

cmdlet, commandlet

Question 82

what is a set of tools released by Microsoft that can help you troubleshoot all sorts of problems on your Windows computers?

Answer 82

Sys internals

Question 83

where can you get sys internals?

Answer 83

microsoft website, or by using the package management feature.

Question 84

How can you locate the Sys internals package in Powershell? to see if you can get it on your computer, or if it is a program your computer can access in order to install it.

Answer 84

Find-Package sysinternals -IncludeDependencies

Question 85

what happens if you run
Find-Package sysinternals -IncludeDependencies
and get an error? no match found?

Answer 85

the default source of packages in PowerShell is in the PowerShell gallery, which doesn’t contain the sysinternals package.

Question 86

What is Chocolatey?

Answer 86

where you find sysinternals, and all kinds of Windows software packages.

Question 87

What do we need to do before we can install any packages? in PowerShell

Answer 87

we need to add a package source that tells our computer where it can find the packages we want to install.

Question 88

how do we add something as a package source? what cmdlet do we use?

Answer 88

Register-PackageSource

Question 88

why do we need to add Chocolatey as a package source?

Answer 88

because we want to use it to find our packages

Question 89

Register-PackageSource -Name chocolatey -ProviderName Chocolatey -Location http://chocolatey.org/api/v2

Answer 89

what does this do? adds it as a package source.

Question 90

what cmdlet do we use to verify that software v2 is good to go for this source?

Answer 90

Get-PackageSource command.

Question 91

how do we locate our package and its dependencies again before installing it?

Answer 91

Find-Package sysinternals -IncludeDependencies

Question 92

What cmdlet can we use to install the program sysinternals and its corresponding dependencies?

Answer 92

Install-Package

Question 93

what are vital to the core functions of the windows OS?

Answer 93

Windows DLL files

Question 94

what do some Windows-compatible applications use to function?

Answer 94

DLL files

Question 95

What are DLL made up of?

Answer 95

programming modules that contain reusable code.

Question 96

what can use and reuse the same DLL files?

Answer 96

multiple applications

Question 97

What is used by many applications to provide Windows dialog box functions?

Answer 97

Comdlg32 DLL file

Question 98

how did Microsoft remedy DLL dependency problems?

Answer 98

used the .net framework and other methods.

Question 99

What does the reusable feature of DLL files do?

Answer 99

conserves disk space and use Ram more efficiently,which improves OS and application operating speed.

Question 100

what does the DLL modular structure do?

Answer 100

makes updating a DLL file fast and simple, eliminating the need to update the whole library.

Question 101

What are installed once for use by any number of applications?

Answer 101

DLL updates

Question 102

What are some common DLLs used by Windows? common file extensions.

Answer 102

.drv files, .ocx files, .cpl files

Question 103

what file extension is for files that are device drivers which manage the operation of physical devices like printers?

Answer 103

.drv files

Question 104

what file extension is for files that provide controls like the program object for selecting a date from a calendar?

Answer 104

.ocx files, active X controls

Question 105

what file extension is for files that manage each of the functions found in the Windows Control Panel?

Answer 105

.cpl files, control panel files

Question 106

what can an app use to load parts of the app as modules?

Answer 106

DLL

Question 107

What functionality is granted by loading parts of an app as modules?

Answer 107

if the application offers multiple functions, the app can selectively load only the modules that offer the functionality requested by the user.

Question 108

when does a printer driver not need to be loaded into memory?

Answer 108

if the user doesn’t access the print function within an application

Question 109

why does DLL system as it is now require the system to use less RAM to hold an application in working memory?

Answer 109

because we only need to load the dependencies and functions that we need at a time.

Question 110

what is created when an application uses a DLL file?

Answer 110

a windows package dependency

Question 111

what fails when an application overwrites the DLL dependency of another app?

Answer 111

the other app

Question 112

What can delete the DLLs needed by other applications installed on a system?

Answer 112

applications and malware

Question 113

What is DLL hell?

Answer 113

where an application installs a new version of the shared DLL for a computer system, but the other applications that are dependent on the shared DLL have not been updated to be compatible with it, which causes them to fail when the user tries to launch them. Applying upgrades or fixes to DLLs.

Question 114

When can a user cause a problem by reinstalling an older application that stopped working after a shared DLL file was upgraded by a newer app?

Answer 114

the reinstallation of the app that uses the old DLL version can overwrite the new DLL file, which can cause the new app with the shared DLL dependency to fail when it next tries to run.

Question 115

What controls the updates and deletions of system DLL files, and will only let applications with valid digital signatures to update and delete DLL files?

Answer 115

Windows File Protection

Question 116

What removes the sharing option from DLLs by creating a private version of the DLL and storing it in the application’s rot folder? Changes to the shared version of the DLL won’t affect the application’s private copy.

Answer 116

Private DLLs

Question 117

What resolves the DLL hell problem by allowing an application to add an updated version of a DLL file without removing the older version of the DLL file? Preventing the malfunction of applications that have dependencies on the older DLL file.

Answer 117

.NET Framework assembly versioning

Question 118

Where can DLL versions be found?

Answer 118

C:\Windows\assembly path

Question 119

What cache are DLL versions found in?

Answer 119

Global Assembly Cache, GAC.

Question 120

What does the GAC contain?

Answer 120

the .NET “Strong Name Assembly” of each DLL file version.

Question 121

What does the “Strong Name Assembly” include?

Answer 121

*name of the assembly
*version number
*culture
*public key token

Question 122

What Strong Name Assembly inclusion is: multiple DLL files can share this?

Answer 122

name of the assembly

Question 123

what differentiates the version of DLLs in Strong Name Assembly?

Answer 123

Version number

Question 124

in strong name assembly, what is the country or region where teh application is deployed and can be “neutral”?

Answer 124

culture

Question 125

what, in Strong Name Assembly, is a uniqe 16 character key assigned to an assembly when it is built?

Answer 125

public key token

Question 126

What can be locate in side-by-side assemblies?

Answer 126

DLLs and dependencies

Question 127

What is a public or private resource collection that is available to applications during run time?

Answer 127

Side-by-side assembly

Question 128

what assemblies contain XML files called manifests?

Answer 128

side-by-side assemblies

Question 129

What contain data similar to the configuration settings and other data that applications traditionally stored in the Windows registry?

Answer 129

manifests

Question 130

where do applications store their shared, side-by-side assembly manifests?

Answer 130

the WinSXS folder of the computer

Question 131

Where are private manifests stored?

Answer 131

inside the application’s folder or embedded in an application or assembly

Question 132

what can the metadata of a manifest include?

Answer 132

names, resource collection, classes, dependencies

Question 133

in a manifest’s metadata, what manages file naming/

Answer 133

names

Question 134

in a manifest’s metadata, what can include One or more DLL, COM server, Windows classes, interfaces, and/or type libraries?

Answer 134

resource collections

Question 135

in a manifests metadata, what is included if versioning is used?

Answer 135

classes

Question 136

it a manifest’s metadata, what can applications and assemblies create to other side-by-side assemblies?

Answer 136

Dependencies

Question 137

What should be considered when troubleshooting application issues?

Answer 137

manifests

Question 138

where can application configuration settings be found if they are not found in the Windows registry?

Answer 138

the manifest from the app’s side-by-side assembly.