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Jet001 [13]
3 years ago
11

Why will the standard replacement algorithms (LRU, FIFO, clock) not be effective in handling this workload for a page allocation

that is less than the sequence length? (b) If this program were allocated 500 page frames, describe a page replacement approach that would perform much better than the LRU, FIFO, or clock algorithms.
Computers and Technology
1 answer:
dusya [7]3 years ago
6 0

Answer:

These algorithm keeps an eye on which page was used when. LRU assumes that the page that was recently used has more probability  

of being used or requested by the user. Thus, it keeps the pages that were recently used, when a new page is requested. If page  

fault occurs, the requested page is fetched and it replaces the page in cache which was last referenced earlier than any other page  

in the cache (or frame).The LRU associates a time with each page in the memory and the ones with the greatest value are replaced.  

It does not suffer from Belady’s anomaly. The page fault will be referred when 512 page frame are reached. This is the total length of the complete sequence.

FIFO replaces pages that come in cache firstly. FIFO stands for First in first out.  

(b) The FIFO replacement algorithm replaces the page which was first brought into the memory followed by the next and soon.  

This algorithm suffers from Belady’s anomaly. In First In First out (FIFO) page replacement scheme of page replacement, the requests  

are executed as they are received. When a new request is made of a page which is not available in the existing frames, then the requested  

page is acquired from the memory. The page in the first frame is replaced by the requested page. If again a request is made of a page not  

yet available in the frames, it is fetched from the memory and it replaces the second frame's page, and so on.  

There are total 500 frames given. The alternative approach which is better than clock algorithm, FIFO, and LRU is that the pages  

from 0 to 498 are set to the fixed frames. Thus, 499 frames are fixed and only one frame can vary.

Explanation:

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An international magazine publisher has commissioned you to do a series of images in black and white. The publisher distributes
CaHeK987 [17]

Answer:

I need to send black-and-white images in a print-ready format. Therefore, here are the steps I’d follow:

First, I’d shoot my images.

I’d use Photoshop to modify or correct the color of the images.

I’d convert the images into black-and-white versions.

I’d save the selected files in the TIFF format. This method will ensure that the images retain their quality and are print-ready.

I’d also convert these files into the JPEG format to get good-quality, low-resolution images for the client’s web publishing.

The Art Director requires images that they can modify, if required. Therefore, I’ll include files in the TIFF and PSD formats. These are open files and anyone can modify them.

I’d send all these saved copies to the magazine for their work.

Explanation:

just did it and it gave me this answer:)

5 0
3 years ago
I'm using assembly language. This is my assignment. I kinda confused about how to write code for this assignment. Can anyone exp
Brut [27]

Answer:

oid changeCase (char char_array[], int array_size ) {

__asm{

   mov eax, char_array;    

   mov edi, 0;

readArray:

   cmp edi, array_size;

   jge exit;

   mov ebx, edi;          

   shl ebx, 2;

   mov cl, [eax + ebx];    

check:

   //working on it

   cmp cl, 0x41;      

   jl next_indx;

   cmp cl, 0x7A;      

   jg next_indx;

   cmp cl, 'a';

   jl convert_down;

   jge convert_up;

convert_down:

   or cl, 0x20;        //make it lowercase

   jmp write;

convert_up:

   and cl, 0x20;      

   jmp write;

write:

   mov byte ptr [eax + ebx], cl    

next_indx:

   inc edi;

exit:

   cmp edi, array_size;

   jl readArray;

mov char_array, eax;

}

}

Explanation:

  • Move char_array to eax as it is base image .
  • Use ebx as offset .
  • Use ecx as the storage register .
  • check if cl is <= than ASCII value 65 (A) .
6 0
3 years ago
You're the sole IT employee at your company, and you don't know how many users or computers are in your organization. Uh oh! Wha
Neporo4naja [7]

Answer

Directory Services

<u></u>

<u>Definition</u>

It is a type of software that is used to unify and customize the resources available at the network.

<u>Explanation</u>

This software is used to gather the information and addresses of all computers connected on the network.

It is a type of information store, where all the information related to resources (computer) and services of network has been stored. It also gives administrator rights to the single point to manage whole network resources.

This is the reason, Option "D" is the best choice for me as sole IT employ in a company. I will prefer directory services software to gather the information of all computers of organization and manage users in company.  

4 0
3 years ago
_______ are useful when you want the user to select one choice from several possible choices. Radio buttons Check boxes Buttons
gtnhenbr [62]

The radio buttons are used when only one option is to be selected from the several possible choices. Thus, option A is correct.

<h3>What are radio buttons?</h3>

Radio buttons can be understood as the elements of selection a single option amongst the multiple suitable options. The default icon for the radio buttons is the blank circle.

Therefore, option A Radio buttons is correct.

Learn more about radio buttons, here:

brainly.com/question/14316393

#SPJ1

4 0
2 years ago
What does clicking and dragging the fill handle in excel
Olegator [25]

Answer:

The fill handle copies the same values, formulas, or fills a series of dates, texts, numbers, and other data to a desired number of cells. ... Click and hold the handle, then you can drag up, down, across over other cells. When you release your mouse button, it auto-fills the content to the cells you dragged over.

5 0
2 years ago
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