Answer:
The answer is "Always true
"
Explanation:
Following are the program to this question:
#include <iostream>//header file
using namespace std;
int main()//main method
{
bool x=true;//defining bool variable x and assign value
bool y=false;//defining bool variable y and assign value
if(!(x || y) || (x || y))//use given condition with if block
{
cout<<"True";//print true message
}
else//defining else block
{
cout<<"false";//print false message
}
return 0;
}
In the above code two bool variable is declared, that hold ture and false, and used in the given expression with the condition statement, that checks the given value. In the code the logical gate OR gate that always print the true value.
Answer B: Asymmetric cryptography, because the receiver has its own decryption key and cannot create encrypted messages, because he doesn't have the encryption key.
About the other answers:
A: Private keys are always involved, there has to be some secret to do encryption, so this answer doesn't say very much.
C: Digital signatures can be used to verify/prove some data comes from some person (the signer) in an unaltered way. It is not about encryption, so is not about the security of your message. You use it in combination with encryption.
D: Like A, this doesn't say very much. Shared secret keys (symmetric keys) can be used for encryption, but they are less secure since the keys have to exist in more than one place (sender and receiver).
There are two types of secondary memories.
- RAM
- ROM
RAM:
- RAM stands for random access memory .
- It is expandable.
- we can do multiple things in it.
- Its erasable.
ROM
- ROM stands for read only memory.
- It is permanent .
- We can only read in it.
- Its permanent hence not removable.
Answer:
Well, I would definitely advise him to buy USB hubs.
Explanation:
USB hub is a device that can give additional USB slot for the user just by consuming one single slots. In recent years, USB hubs can contain more than 9 slots with different variety, including HDMI and DVI that is required by this particular friend.
Using this device will make it easier to plug in and plug out all the devices he wants to his laptop since it all connected to one single hub.
Since he only has the budget under 100$ , Dell DA300 6-in-1 USB-C Hub could be a good option for Him.
Answer:
network engineering and game programming
