Answer:
The fundamental limitation of symmetric (secret key) encryption is ... how do two parties (we may as well assume they are Alice and Bob) agree on a key? In order for Alice and Bob to communicate securely they need to agree on a secret key. In order to agree on a secret key, they need to be able to communicate securely. In terms of the pillars of IA, To provide CONFIDENTIALITY, a secret key must first be shared. But to initially share the key, you must already have CONFIDENTIALITY. It's a whole chicken-and-egg problem.
This problem is especially common in the digital age. We constantly end up at websites with whom we decide we want to communicate securely (like online stores) but with whom we there is not really an option to communicate "offline" to agree on some kind of secret key. In fact, it's usually all done automatically browser-to-server, and for the browser and server there's not even a concept of "offline" — they only exist online. We need to be able to establish secure communications over an insecure channel. Symmetric (secret key) encryption can't do this for us.
Asymmetric (Public-key) Encryption
Yet one more reason I'm barred from speaking at crypto conferences.
xkcd.com/177/In asymmetric (public key) cryptography, both communicating parties (i.e. both Alice and Bob) have two keys of their own — just to be clear, that's four keys total. Each party has their own public key, which they share with the world, and their own private key which they ... well, which they keep private, of course but, more than that, which they keep as a closely guarded secret. The magic of public key cryptography is that a message encrypted with the public key can only be decrypted with the private key. Alice will encrypt her message with Bob's public key, and even though Eve knows she used Bob's public key, and even though Eve knows Bob's public key herself, she is unable to decrypt the message. Only Bob, using his secret key, can decrypt the message ... assuming he's kept it secret, of course.
Explanation:
Answer:
Option D
Explanation:
Complete question
A management information system is typically used by _____.
A. all levels of employees
B. company executives
C. upper-level managers
D. middle-level managers
Solution
A management information system is typically used by middle-level managers
Option D is the correct answer
Management information system (MIS) helps the middle managers to control the work across the various teams of organization.
There Is an App that you downloaded that allows this. you have to find it and disable it
Program to display greater number:
#include <iostream> <em>// Needed to perform IO operations </em>
#include<conio.h> <em> // header file</em>
using namespace std;
int main() //start of the program
{
int a , b =0; //initialising the two integer variable
cout<< "Enter first number"<<endl;
cin >> a; //user's first number
cout<< "Enter second number"<<endl;
cin >> b; //user's second number
if (a>b) //comparing the two integers input by user
cout<< a << "is greater than" << b; //display the greater number
else
cout<< b << "is greater than" << a;
return 0; // exist
}
Answer:
I'll let you make an educated guess off of this info! You always retain info better making an inference on a subject that you are having trouble with!
Explanation:
There are four types of wireless networks -- wireless local area networks, wireless metropolitan area networks, wireless personal area networks and wireless wide area networks -- each with its own function.
- wireless local area network
<em>A wireless local area network (WLAN) is a wireless distribution method for two or more devices. WLANs use high-frequency radio waves and often include an access point to the Internet. A WLAN allows users to move around the coverage area, often a home or small office, while maintaining a network connection.</em>
- wireless metropolitan area network
<em>A metropolitan area network (MAN) is a computer network that connects computers within a metropolitan area, which could be a single large city, multiple cities and towns, or any given large area with multiple buildings. A MAN is larger than a local area network (LAN) but smaller than a wide area network (WAN).</em>
- wireless personal area network
<em>A PAN provides data transmission among devices such as computers, smartphones, tablets and personal digital assistants. PANs can be used for communication among the personal devices themselves, or for connecting to a higher level network and the Internet where one master device takes up the role as gateway.</em>
- wireless wide area network
<em>Wireless wide area network (WWAN), is a form of wireless network. ... WWAN connectivity allows a user with a laptop and a WWAN card to surf the web, check email, or connect to a virtual private network (VPN) from anywhere within the regional boundaries of cellular service.</em>
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<u><em>I hope this helped!!</em></u>
<u><em /></u>
<em>shania</em>
