IT 342 FINAL QUESTIONS WITH VERIFIED ANSWERS
Windows 10 - Answers - PC Operating System
Universal Application Architecture - Answers - The universal application architecture of
Windows 10 means that applications will work across any preferred device
Features of Windows 10 - Answers - System Security
-Authentication in a Domain Environment
-File system security
Local File System Permissions
Share Directory Permissions
Cortana
Cortana is a virtual assistant created by Microsoft for Windows 10
Demand Paging - Answers - page is not loaded into the main memory until it is required
- fixed size pages
Demand Segmentation - Answers - memory is divided into various-sized segments -
complicated to implement. Used in IBM OS/2.
Page Fault - Answers - When the desired page is not present in the main memory
page replacement - Answers - find some page in memory which may not be in use and
swap it out to create a free frame in memory.
First In First Out - Answers - Replacement algorithm with the following attribtues:
Simplest
Just goes in order
Easy to implement
Does not look at use of page!
Belay's Anomaly
Optimal - Answers - the page in the main memory which will not be used for the longest
time is swept out from the main memory to create space for the requested page. It is the
least recently used.
Counting-Based - Answers - Based on how many times a page is used
Least Frequently used
page that was referred to the lowest number of times from the time when the page is
loaded in the main memory is replaced when the page fault occurs
Most Frequently used
, page that has been referred to the lowest number of times may have been loaded
recently and would be required soon
Priority Allocation - Answers - Variation of proportional except use priority instead of
size
desired in file system? - Answers - Long Term Existence
Shareable across processes and users
Maintain Data Integrity
Keep unwanted users out
Objects of a file system - Answers - Optimize performance
Minimize loss of data
Provide standardized interface to applications
Secondary Stage - Answers - Physical View
How they exist in storage
OS perspective
Logical View
How they can be used and what properties they have
User's perspective (the application program)
File - Answers - Programs and Data
Sequence of bits
Files are organized as: - Answers - Bits
Bytes
Lines
Records
File Attributes - Answers - Name - for humans
Identifier - a tag for the software
Type - system dependent
Location - pointer to a device and the files placement
Size - current size in bytes or blocks
Protection - Access control with user executions
User - Who has access to the file
Time and Date - When the file was created, modified, or accessed
Directory storage contains - Answers - Unique Identifier
Name
Open-File Table - Answers - Keeps information about files in use and referenced
through an index. This Saves time and also includes how many processes are using the
file and locks provisions
Windows 10 - Answers - PC Operating System
Universal Application Architecture - Answers - The universal application architecture of
Windows 10 means that applications will work across any preferred device
Features of Windows 10 - Answers - System Security
-Authentication in a Domain Environment
-File system security
Local File System Permissions
Share Directory Permissions
Cortana
Cortana is a virtual assistant created by Microsoft for Windows 10
Demand Paging - Answers - page is not loaded into the main memory until it is required
- fixed size pages
Demand Segmentation - Answers - memory is divided into various-sized segments -
complicated to implement. Used in IBM OS/2.
Page Fault - Answers - When the desired page is not present in the main memory
page replacement - Answers - find some page in memory which may not be in use and
swap it out to create a free frame in memory.
First In First Out - Answers - Replacement algorithm with the following attribtues:
Simplest
Just goes in order
Easy to implement
Does not look at use of page!
Belay's Anomaly
Optimal - Answers - the page in the main memory which will not be used for the longest
time is swept out from the main memory to create space for the requested page. It is the
least recently used.
Counting-Based - Answers - Based on how many times a page is used
Least Frequently used
page that was referred to the lowest number of times from the time when the page is
loaded in the main memory is replaced when the page fault occurs
Most Frequently used
, page that has been referred to the lowest number of times may have been loaded
recently and would be required soon
Priority Allocation - Answers - Variation of proportional except use priority instead of
size
desired in file system? - Answers - Long Term Existence
Shareable across processes and users
Maintain Data Integrity
Keep unwanted users out
Objects of a file system - Answers - Optimize performance
Minimize loss of data
Provide standardized interface to applications
Secondary Stage - Answers - Physical View
How they exist in storage
OS perspective
Logical View
How they can be used and what properties they have
User's perspective (the application program)
File - Answers - Programs and Data
Sequence of bits
Files are organized as: - Answers - Bits
Bytes
Lines
Records
File Attributes - Answers - Name - for humans
Identifier - a tag for the software
Type - system dependent
Location - pointer to a device and the files placement
Size - current size in bytes or blocks
Protection - Access control with user executions
User - Who has access to the file
Time and Date - When the file was created, modified, or accessed
Directory storage contains - Answers - Unique Identifier
Name
Open-File Table - Answers - Keeps information about files in use and referenced
through an index. This Saves time and also includes how many processes are using the
file and locks provisions
