1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Effectus [21]
3 years ago
8

What is the term for the typical layout of the keys on a keyboard?

Computers and Technology
2 answers:
amid [387]3 years ago
4 0
The answer is B)
It’s the first 6 letters on the top of the letter keyboard
stepan [7]3 years ago
3 0
I think the answer is B
You might be interested in
Why will the standard replacement algorithms (LRU, FIFO, clock) not be effective in handling this workload for a page allocation
dusya [7]

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:

6 0
3 years ago
One of your professors has asked you to write a program to grade her midterm exams, which consist of only 20 multiple-choice que
Lorico [155]

Answer:  

Here is the program that determines the number of questions that the student answered correctly.

#include <iostream>  //to use input output functions

#include <fstream>  // to handle files

#define size 20  //size of questions is fixed to 20

using namespace std;   //to identify objects cin cout

int correctAnswers(char answers[], char correct[]);  //to count correct answers given by student

   int main(){    //start of main function

       char correct[size];         // array stores correct answers

       char answers[size];       //stores answers of students

       int result;                     //stores the correct answers result of student

       double percentage;   //stores the percentage of correct answers

       int counter;        //counts number of correct answers given by student  

       ifstream reader("CorrectAnswers.txt");  //reads the contents of CorrectAnswers.txt file

       if(!reader){  //if file cannot be read/opened

           cout<<"Cannot open the file"<<endl; //displays error message

           return 0;        }          

       counter = 0;    //sets counter to 0 initially

       while( (reader>>correct[counter++]) && counter < size  );    //reads each answer from CorrectAnswers.txt  and stores it in char array correct[] at each iteration of while loop

       reader.close();  //closes the file

       reader.open("StudentAnswers.txt");    //opens StudentAnswers.txt file  

       if(!reader){   //if file could not be opened

           cout<<"Cannot open file"<<endl;   //displays this error message

           return 0;          }          

       counter = 0;    //sets counter to 0

       while( (reader>>answers[counter++]) && counter < size );   //reads each answer from StudentAnswers.txt  and stores it in char array answers[] at each iteration of while loop    

       result = correctAnswers(answers,correct);  //calls correctAnswers method to compute the correct answers given by student and stores the result of correct answers in result variable

       percentage = 100.0*result/size;   //computes percentage of correct answers of student    

       cout<<"The total number of questions answered correctly: "<<result<<endl;     //displays total no of qs answered correctly

       cout<<"The percentage of questions answered correctly: "<<percentage<<" %"<<endl;  //displays computed percentage

       if( percentage >= 75 ){  //if percentage of correctly answered questions is 75% or greater

           cout<<"Student has passed the exam!"<<endl;   } //displays that the student passed the exam

      else { //if percentage of correctly answered questions is below 75%

           cout<<"Student has failed the exam!"<<endl;         }  //displays that the student failed the exam

       return 0;     }  

   int correctAnswers(char answers[], char correct[]){   //method to compute the number of correct answers  

       int countCorrect = 0;   //stores the count of correct answers

       for(int i=0; i<size; i++){  //iterates 20 times to match answers from both the files of 20 questions

           if( answers[i] == correct[i] ){  // if the student answer in StudentAnswers.txt file matches with the correct answer given in CorrectAnswers.txt file

               countCorrect++;              }         }     //adds 1 to the countCorrect every time the student answer matches with the correct answer

       return countCorrect;     }  //returns the number of questions that the student answered correctly

Explanation:

The program is well explained in the comments mentioned with each line of code.

Here are the two files that can be used to check the working of the above program. You can create your own text files too.

     CorrectAnswers.txt :

A

A

B

D

C

C

A

C

D

D

A

B

A

B

B

C

A

C

C

B

StudentAnswers.txt

A

C

B

D

C

C

B

C

D

C

D

B

A

B

B

C

A

C

C

B      

Also if the number of wrong answers are to be displayed then add this method to the above code:

void wrongAnswers(char answers[], char correct[]){  //method takes two arrays one with correct answers and the other with student answers

       for(int i=0; i<size; i++){ //iterates 20 times

           if( answers[i] != correct[i] ){ //if the answer by student does not match with correct answer

               cout<<"Question Number: "<<i+1<<endl; //the question that is answered incorrectly

               cout<<"Correct answer is: "<<correct[i]<<endl;  //displays the correct answer

               cout<<"Student answer is: "<<answers[i]<<endl;    }    }    } //displays the answer that student gave

Now call this method in main() as:

if(result < size){  //if result is less than size i.e. 20

           cout<<"The questions answered incorrectly"<<endl;  //number of questions that are answered incorrectly

           wrongAnswers(answers,correct);  //calls method to compute the wrongly answered questions

       }else{  //if result is not less than size

           cout<<"No incorrect answers."<<endl;       }    //no questions incorrectly answered      

       cout<<"Number of missed questions: "<<size-result<<endl; //displays the number of missed questions

The screenshot of the output is attached.

8 0
3 years ago
Determine the number of cache sets (S), tag bits (t), set index bits (s), and block offset bits (b) for a 40964096-byte cache us
pogonyaev

Complete Question:

Determine the number of cache sets (S), tag bits (t), set  index bits (s), and block offset bits (b) for a 4096-byte cache using 32-bit memory addresses, 8-byte cache blocks and a 8-way associative design. The cache has :

Cache size = 1024 bytes, sets t = 26.8, tag bits, s = 3.2, set index bit =2

Answer:

Check below for explanations

Explanation:

Cache size = 4096 bytes = 2¹² bytes

Memory address bit = 32

Block size = 8 bytes = 2³ bytes

Cache line = (cache size)/(Block size)

Cache line = \frac{2^{12} }{2^{3} }

Cache line = 2⁹

Block offset = 3 (From 2³)

Tag = (Memory address bit - block offset - Cache line bit)

Tag = (32 - 3 - 9)

Tag = 20

Total number of sets = 2⁹ = 512

3 0
3 years ago
What are the characteristics of a good text-based adventure game? In other words, what are some features that should be in the g
Degger [83]

Answer:

spelling and good format

Explanation:thats all i know

8 0
2 years ago
. Network navigation devices, such as routers, help datatravel in bundles that are referred toas………..
nataly862011 [7]

Answer: packets

Explanation:

Network navigation devices, such as routers, help data travel in bundles that are referred to as packets. As, networks that transfer the data in small packets are known as packet switching network and that packets carry the data using the internet and the protocol and each of the packet contain some information and data to navigate.

3 0
3 years ago
Other questions:
  • Which of the following is true of property?
    13·1 answer
  • Chdtp aoxophg gr72 ae9&gt;3 zqqz
    12·1 answer
  • The ____________________ packet-filtering firewall allows only a particular packet with a particular source, destination, and po
    10·1 answer
  • The _____ helps the project team to identify the main functions or features of the system and the different users or external sy
    15·1 answer
  • I just want to ask if some one know an online school program that offer a live session and the cost of it not to expensive. for
    10·1 answer
  • Convert the following pseudocode to C++ code. Be sure to define the appropriate variables. Store 25 in the speed variable. Store
    5·1 answer
  • Write a class for a Cat that is a subclass of Pet. In addition to a name and owner, a cat will have a breed and will say "meow"
    14·1 answer
  • Amazon Web Services and Microsoft Azure are some of the most widely used _______.
    7·1 answer
  • What are the fundamental activities that are common to all software processes?
    9·1 answer
  • What are the benefits and drawbacks of a desktop utilising virtualisation and a server?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!