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3 years ago

A senior center would like to add a new computer to their library so that members can check their email and read book reviews

Computers and Technology

2 answers:

Airida [17]3 years ago

4 0

Answer:

A Budget computer

Explanation:

Reason because for checking your email's and online reviews on products doesn't take much strain on the computer. That is why a good budget computer would be great for this task!

jenyasd209 [6]3 years ago

4 0

Answer:

D: A budget computer

Explanation: Looked it up on Quizlet.

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Image files are grouped into two categories: _____.

EleoNora [17]

It is grouped according to raster and vector format. Raster format are images used in a computer or printed. Vector format stores data and is compressed.

Examples of common raster formats usually used in a computer are; jpeg, png, bitmap, and gif. Vector formats are; CGM, SVG and 3D vector.

4 0

4 years ago

GIVING BRAINLIEST What does output allow a computer to do? Display information Receive information Do complex math problems Do m

kumpel [21]

The answer is display information

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3 years ago

Read 2 more answers

Write a parent program to fork(2) n processes where n is passed tothe program on the command line, and n can be from 1 to 10. Al

MrRissso [65]

Answer:

Complete code is given below:

Explanation:

#include <stdio.h>

#include <sys/types.h>

#include <unistd.h>

#include <time.h>

#include <sys/wait.h>

int main(int argc , char *argv[]){

pid_t mypid, childpid;

int status;

int i,n;

time_t t;

mypid = getpid();

printf("pid is %d.\n", mypid);

childpid = fork();

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

if (childpid == 0) {

mypid = getpid();

childpid = fork();

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

if (childpid == 0) {

mypid = getpid();

printf("Child pid is %d.\n", getppid());

childpid = fork();

if ( childpid == -1 ) {

perror("Cannot proceed. fork() error");

return 1;

}

random((unsigned) time(&t));

printf(" parent id = %d : Random = %d\n",mypid , (int)(random()% 100 +1));

printf("child id = %d : Random = %d\n",getpid , (int)(random()% 100 +1));

if (childpid == 0) {

printf("Child 2: I hinerited my parent's PID as %d.\n", mypid);

mypid = getpid();

printf("Child 2: getppid() tells my parent is %d. My own pid instead is %d.\n", getppid(), mypid);

sleep(30);

return 12;

} else return 15;

} else {

while ( waitpid(childpid, &status,0) == 0 ) sleep(1);

if ( WIFEXITED(status) ) printf("Child 1 exited with exit status %d.\n", WEXITSTATUS(status));

else printf("Child 1: child has not terminated correctly.\n");

}

} else {

printf(" fork() is ok and child pid is %d\n", childpid);

wait(&status);

if ( WIFEXITED(status) ) printf(" child has exited with status %d.\n", WEXITSTATUS(status));

else printf(" child has not terminated normally.\n");

}

return 0;

}

Output:

pid is 24503.

Child pid is 24565.

parent id = 24566 : Random = 87

child id = 1849900480 : Random = 78

pid is 24503.

Child 1 exited with exit status 15.

pid is 24503.

fork() is ok and child pid is 24565

child has exited with status 0.

6 0

3 years ago

It takes 2 seconds to read or write one block from/to disk and it also takes 1 second of CPU time to merge one block of records.

Alexxx [7]

Answer:

Part a: For optimal 4-way merging, initiate with one dummy run of size 0 and merge this with the 3 smallest runs. Than merge the result to the remaining 3 runs to get a merged run of length 6000 records.

Part b: The optimal 4-way merging takes about 249 seconds.

Explanation:

The complete question is missing while searching for the question online, a similar question is found which is solved as below:

Part a

For optimal 4-way merging, we need one dummy run with size 0.

Merge 4 runs with size 0, 500, 800, and 1000 to produce a run with a run length of 2300. The new run length is calculated as follows $L_{mrg}=L_0+L_1+L_2+L_3=0+500+800+1000=2300$
Merge the run as made in step 1 with the remaining 3 runs bearing length 1000, 1200, 1500. The merged run length is 6000 and is calculated as follows