câu 35

Question:

How long does it take to load a 64-KB program from a disk whose average seek time is 5 msec, whose rotation time is 5 msec, and whose tracks hold 1 MB (a) for a 2-KB page size? (b) for a 4-KB page size? The pages are spread randomly around the disk and the number of cylinders is so large that the chance of two pages being on the same cylinder is negligible.

Answer:

Total time in Seek and rotational latency = 5 msec + 5 msec = 10 msec;
For 2 KB pages, transfer time is 1.25 msec. so total time in transfering 2 KB page is => 11.25 msec;

so to load 1024 of these pages (1024 KB = 1 MB), it requires 1024*11.25 => 11.250 sec

For 4 KB pages, transfer time is 2.5 msec. so total time in transfering 4 KB page is => 12.5 sec;

so to load 512 of these pages , it requires 512*12.5 => 6.4 sec

A palindrome is a number or a text phrase that reads the same backwards as forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a C++ program that reads in a five-digit integer and determines whether it is a palindrome .

- June 12, 2021

Question: A palindrome is a number or a text phrase that reads the same backwards as forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a C++ program that reads in a five-digit integer and determines whether it is a palindrome . Answer: Step 1 PROGRAMING CODE: #include <stdio.h> int main() { int n, a, b, c, d, e; int digit = 0; printf( "Enter one 5 digit number: \n" ); scanf( "%d", &n ); a = n / 10000; b = n / 1000 % 10; c = n / 100 % 10; d = n / 10 % 10; e = n % 10; if ( a == e && b == d ) { printf( "Palindrome!\n" ); } if ( a != e || b != d ) { printf( "Not a palindrome.. :(\n" ); } return 0; } PROGRAM SCREENSHOT: Step 2

câu 35

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Shorten Link Whatchamacallit Candy

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A palindrome is a number or a text phrase that reads the same backwards as forwards. For example, each of the following five-digit integers is a palindrome: 12321, 55555, 45554 and 11611. Write a C++ program that reads in a five-digit integer and determines whether it is a palindrome .

Link BD consists of a single bar 30 mm wide and 12 mm thick. Knowing that each pin has a10 mm diameter, determine the maximum value of the average normal stress in the link BD if θ = 15 degrees.

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