WGU 191 Chapter 7 and 8 on Virtual and Main Memory Exam Review Questions and A Level Marking Scheme Latest 2024/2025
11 keer bekeken 1 keer verkocht
Vak
WGU C191
Instelling
WGU C191
WGU 191 Chapter 7 and 8 on Virtual and Main Memory Exam Review Questions and A Level Marking Scheme Latest 2024/2025
Interrupt driven - correct answer When the CPU does not poll the control bit, but rather gets an interrupt signal
Buddy-system/power-of-2-allocator - correct answer Allocates m...
WGU 191 Chapter 7 and 8 on Virtual and
Main Memory Exam Review Questions
and A Level Marking Scheme Latest
2024/2025
Interrupt driven - correct answer When the CPU does not poll the control bit, but rather
gets an interrupt signal
Buddy-system/power-of-2-allocator - correct answer Allocates memory from a fixed-
size segment consisting of physically contiguous pages via units sized as a power of
2(or rounded up to the next as needed).
Buddy - correct answer When a larger memory block is divided into a smaller part to
satisfy the request. Two smaller parts of a block are of equal size and called buddies.
Note that this may cause fragmentation (i.e. if a 11kb block is needed but 16kb block is
allocated(b/c it's a power of 2))
Coalescing - correct answer If needed split blocks of memory (buddies) can come
together to form larger segments of memory if needed
Slab allocation of kernel memory - correct answer A slab is one or more physically
contiguous pages
Cache allocation of kernel memory - correct answer Consists of one or more slabs.
There is a single cache for each unique kernel data structure
Objects - correct answer Objects populate the cache(multiple slabs) of the kernel data
structure that the cache represents (e.g. semaphore cache has semaphore objects)
Prepaging - correct answer Bringing into memory at one time all pages that will be
needed
, Resolution - correct answer Isolating the memory that is actually needed through a
smaller page size
TLB Reach - correct answer The amount of memory accessible from the translation
lookaside buffer. Found by the number of entries multiplied by the page size
page locking/pinning - correct answer ensures a process stays in main memory and is
exempt from paging.
Clustering - correct answer Handling a page fault by bringing in not only the faulting
page, but also several pages following the faulting page.
Working set minimum - correct answer The minimum number of pages the process is
guaranteed to have in memory up to its working set maximum
Automatic working set trimming - correct answer When free memory falls below a
threshold, the virtual memory will use this to restore the memory above the threshold
Pageout - correct answer when pages are written to disk
Priority paging - correct answer Distinguishing pages that have been allocated to
processes versus pages that have been allocated to regular files
True or False? A program does not need to be stored in memory in its entirety. - correct
answer True
True or False? A physical address space is at least as large as a virtual address space.
- correct answer False
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper KieranKent55. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €10,21. Je zit daarna nergens aan vast.
