Who has a relationship like this quote?

1. Why isn't solar energy usually the only power source for a region?

ale4655 [162]

1. Every region doesnt get the same amount of sunlight as the rest due to whether or location an example would be that a region with alot of rain could have clouds that wouldnt let the solar panels to absorb as much sunlight as a more dry and sunny place
2 wind farms can be used to store energy for a power outage and a way to lower the cost of electricity to a farmer
3 using hydro energy requires people to build a dam that pours the water over a mill that rotates and stores energy from it
4 a type of waste created by nuclear power plants would be daily uses that have radiation such as plastic containers ,gloves , disposable overalls, boots or just plain radioactive waste.
5 would be the total mass of organisms in a given area or volume
6 is a process to further limit carbon dioxide emissions from burning coal
7 is basically the means to tap into energy savings that over time become an asset
8 turning down the water heater thermostat and turning off lights when not in use can save energy
9 smart grids use timing grid to determine how long you use electricity for and for how much you used

6 0

4 years ago

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Can someone please tell me what I’m doing wrong ? Please and it’s due on Thursday!!

liberstina [14]

Answer:

Sure. In Unit test 5, it's looking for 1 instead of 0. You are returning 0 instead of 1.

0 requires 1 digit to express it and should therefore return 1.

In line 6, change the 0 to a 1.

8 0

2 years ago

Which OS does NOT provide users with a GUI?

vesna_86 [32]

The answer is C ms-dos
Side note:
GUI means graphical user interface. In other words, that means it looks pretty and has cool buttons, animations and cute stuff. MS-DOS is just a black screen with words on it. Definitely not cute or cool.

3 0

4 years ago

Implement the RC4 stream cipher in C++. User should be able to enter any key that is 5 bytes to 32 bytes long. Be sure to discar

gladu [14]

Answer:

Explanation:

#include <iostream>

#include <string>

#include<vector>

using namespace std;

vector<int> permute(vector<int>, vector<int>);

string encrypt(vector<int>s1 , vector<int> t1, string p);

string decrypt(vector<int>s1, vector<int> t1, string p);

int main() {

string plaintext = "cryptology";

string plaintext2 = "RC4";

vector<int> S(256);

vector<int> T(256);

int key[] = { 1,2,3,6 };

int key2[] = { 5,7,8,9 };

int tmp = 0;

for (int i = 0; i < 256;i++) {

S[i] = i;

T[i] = key[( i % (sizeof(key)/sizeof(*key)) )];

}

S = permute(S, T);

for (int i = 0; i < 256 ;i++) {

cout << S[i] << " ";

if ((i + 1) % 16 == 0)

cout << endl;

}

cout << endl;

string p = encrypt(S, T, plaintext);

cout << "Message: " << plaintext << endl;

cout << "Encrypted Message: " << " " << p << endl;

cout << "Decrypted Message: " << decrypt(S, T, p) << endl << endl;

tmp = 0;

for (int i = 0; i < 256;i++) {

S[i] = i;

T[i] = key2[(i % (sizeof(key) / sizeof(*key)))];

}

S = permute(S, T);

for (int i = 0; i < 256;i++) {

cout << S[i] << " ";

if ((i + 1) % 16 == 0)

cout << endl;

}

cout << endl;

p = encrypt(S, T, plaintext2);

cout << "Message: " << plaintext2 << endl;

cout << "Encrypted Msg: " << p << endl;

cout << "Decrypted Msg: "<<decrypt(S, T, p) << endl << endl;

return 0;

}

string decrypt(vector<int>s1, vector<int> t1, string p) {

int i = 0;

int j = 0;

int tmp = 0;

int k = 0;

int b;

int c;

int * plain = new int[p.length()];

string plainT;

for (int r = 0; r < p.length(); r++) {

i = (i + 1) % 256;

j = (j + s1[i]) % 256;

b = s1[i];

s1[i] = s1[j];

s1[j] = b;

tmp = (s1[i] + s1[j]) % 256;

k = s1[tmp];

c = ((int)p[r] ^ k);

plain[r] = c;

plainT += (char)plain[r];

}

return plainT;

}

string encrypt(vector<int>s1, vector<int> t1, string p) {

int i = 0;

int j = 0;

int tmp = 0;

int k = 0;

int b;

int c;

int * cipher = new int [p.length()];

string cipherT;

cout << "Keys Generated for plaintext: ";

for (int r = 0; r < p.length(); r++) {

i = (i + 1) % 256;

j = (j + s1[i]) % 256;

b = s1[i];

s1[i] = s1[j];

s1[j] = b;

tmp = (s1[i] + s1[j]) % 256;

k = s1[tmp];

cout << k << " ";

c = ((int)p[r] ^ k);

cipher[r] = c;

cipherT += (char)cipher[r];

}

cout << endl;

return cipherT;

}

vector<int> permute(vector<int> s1, vector<int> t1) {

int j = 0;

int tmp;

for (int i = 0; i< 256; i++) {

j = (j + s1[i] + t1[i]) % 256;

tmp = s1[i];

s1[i] = s1[j];

s1[j] = tmp;

}

return s1;

}

6 0

3 years ago

You are a help desk technician providing support for a wireless network. A user calls and complains he cannot access the Interne

konstantin123 [22]

Answer:

From the user explanations, it can be inferred that the issue may be as a result of incorrect security parameters such as Wireless Protected Access (WPA) which ensure security for wireless connections.

Explanation:

If there is an incorrect access pass to the wireless network by the WPA, any wireless user will not be able to complete a Layer 2 connection to the wireless network after connecting and getting good signal indication and would thus be unable to obtain IP address automatically to be able to log on to browse the internet from the DHCP Server.

8 0

3 years ago

Read 2 more answers