Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

S2 - App OS

S2

QuestionAnswer
It occurs when a partition is available but is too small for any waiting job. External fragmentation
An address generated by the CPU. Logical address
The size of a memory frame is NOT EQUAL to the size of a process page. FALSE
In paging, the system also breaks a process into blocks called pages. TRUE
The portion of the hard disk that acts as physical memory is called a page file TRUE
The address used to identify a memory location Physical Address
It refers to a collection of processes that are residing in main memory and are ready and waiting to execute Ready Queue
It refers to a collection of processes on the disk that are waiting to be brought into memory for execution. Job queue
In paging, the OS divides main memory into fixed-sized blocks called frames TRUE
It occurs when a process requiring m memory locations reside in a partition with n memory locations where m < n. Internal fragmentation
In dynamic partitions, which memory allocation scheme allots the largest free available block to the new job? Worst-fit
A hardware device that performs the run-time mapping from logical to physical addresses Memory management unit
In this process, if a new hole is adjacent to other holes, the system merges these adjacent holes to form one larger hole. coalescing
Memory paging is a memory management technique for controlling how a computer or virtual machine's (VM's) memory resources are shared. TRUE
F4 F4
Virtual memory is the separation of user logical memory from physical memory TRUE
It is a swapping technique where instead of swapping the entire process into memory, the OS swaps only the necessary pages into memory. Lazy swapping
In demand paging system, there is an additional bit in the page table which is the valid-invalid bit TRUE
If a process tries to use a page that is not in physical memory, then a ________ will occur. Page-fault
It is important to keep the page-fault rate _____ in a demand-paging system. Low
The last step for page fault service routine is ______ Restart the user process
This bit is set to invalid to indicate that a corresponding page is in memory. FALSE
Demand paging system is similar to paging system with swapping. TRUE
This occurs if there is a need to transfer a page from disk to memory but there is no memory space available Memory is overloading
In__________ demanding paging, the system never bring a page into memory until it is required. Pure
This bit is set to ____ to indicate that a corresponding page is in memory. Valid
One of the major advantages of Virtual memory is that programs can be larger than _________. Physical memory
If a process tries to use a page that is not in physical memory, then a page bug will occur. FALSE
The effectiveness of the demand paging is based on a property of computer programs called the publicity of reference. FALSE
A page replacement algorithm is necessary to select which among the pages currently residing in _______ will be replaced. Main memory
It is important to keep the page-fault rate low in a demand-paging system. TRUE
It is important to keep the page-fault rate high in a demand-paging system. FALSE
A portion of the ___________ is acting as a virtual memory Hard disk
Created by: user-1835460
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards