Answer:
Meaning:
PT BOAT ONE OWE NINE LOST IN ACTION IN BLACKETT
STRAIT TWO MILES SW MERESU COVE X CREW OF TWELVE
X REQUEST ANY INFORMATION.
Explanation:
Playfair cipher invented in 1854 by Charles Wheatstone was the first practical digraph substitution cipher. Lord Playfair promoted the use of the cipher, therefore it was named after him. Playfair cipher encrypts pairs of letters (digraphs) making it hard to break. Frequency analysis can still be undertaken but requires much more cipher text in order to work. It requires no additional equipment to operate and is very fast therefore it is to protect information during war. It was used by British forces in the Second Boer War and in World War I and during World War II by the Australians.
When the PT-109 American patrol boat, under the command of Lieutenant John F. Kennedy, was sunk by a Japanese destroyer, a message was received at an Australian wireless station in the morning of the 2 of August 1943 in Playfair code:
KXJEY UREBE ZWEHE WRYTU HEYFS
KREHE GOYFI WTTTU OLKSY CAJPO
BOTEI ZONTX BYBWT GONEY CUZWR
GDSON SXBOU YWRHE BAAHY USEDQ
Meaning:
PT BOAT ONE OWE NINE LOST IN ACTION IN BLACKETT
STRAIT TWO MILES SW MERESU COVE X CREW OF TWELVE
X REQUEST ANY INFORMATION.
Answer:
Search Engine
Explanation:
A search engine refers to a computer application software that looks through and locates items in a database. These items will correspond to to the phrases or keywords being searched for that has been entered by a user.
On the internet or web, popular search engines are provided by google and yahoo and they are designed to carryout web search when users enter search query as keywords or phrases
Answer:
Option B is the correct answer for the following question.
Explanation:
The following option is true because the pearsonr from scipy module is the method of the Python Programming Language in the submodule i.e., "scipy.stats" which print or return P-value for operating the hypothesis test for the value of correlation coefficient. So, that's why the following option is correct.
Answer:
//here is code in c++.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// variable
int temp;
cout<<"Please enter the temperature:";
//read temperature from user
cin>>temp;
int n;
// reduce the case for switch
n=temp/10;
// print output according to the switch case
switch (n) {
case 7:
case 6:
cout<<"tennis"<<endl;
break;
case 5:
case 4:
cout<<"golf"<<endl;
break;
default:
if(temp>=80)
cout<<"swimming"<<endl;
else
cout<<"skiing"<<endl;
break;
}
return 0;
}
Explanation:
Read the value of temperature from user and assign it to variable "temp".
Calculate n=temp/10, to limit the number of cases in the switch statement.
if temperature is greater or equal 60 & less than 80, it will print "tennis".
If temperature is greater or equal 40 & less than 60, it will print "golf".
in default case, if temperature is greater than 80, it will print "swimming".
if less than 40, print "skiing".
Output:
Please enter the temperature::67
tennis
~Hello there!
Your question: Why is CPU called the brain of the computer?
Your answer: CPU is called the brain of computer because the CPU carries all the important calculations that helps the computer to process.
Any queries?
Happy Studying ^=^
