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4 years ago

Generally, the more secure the system, the less usable it becomes. O True O False

Computers and Technology

2 answers:

sladkih [1.3K]4 years ago

5 0

Answer:

False

Explanation:

More stuff doesn't mean less useful

maxonik [38]4 years ago

5 0

I’d say true to this.

Ultimate security is a computer without any internet and masses of protection like fingerprint, facial scanning, retina scanning.

The more secure you try to make it the less you’d want to use it. Imagine having 5 passwords you need to enter before logging in. Just not fun

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Terry is having a problem with his computer screen. He said the screen looks distorted. When you go to check his monitor, you no

sp2606 [1]

Answer:

C. The computer's resolution has been set too low

Explanation:

When the screen of a system looks distorted and the desktop icons do not appear properly, it's a sign of low screen resolution.

This is often caused by the lack of proper display driver.

To fix this, one need to update the graphic driver. The graphic card is always available on the manufacturer's website for download download of latest drivers.

Also, screen resolution can be changed by performing the following tasks.

1. Goto Control Panel

2. Under Appearance and Personalization, click Adjust screen resolution.

3. Click the drop-down list next to Resolution,

4. Move the slider to the resolution you want

5. Click Apply.

5 0

4 years ago

Write a function that implements another stack function, peek. Peek returns the value of the first element on the stack without

devlian [24]

Answer:

See explaination

Explanation:

StackExample.java

public class StackExample<T> {

private final static int DEFAULT_CAPACITY = 100;

private int top;

private T[] stack = (T[])(new Object[DEFAULT_CAPACITY]);

/**

* Returns a reference to the element at the top of this stack.

* The element is not removed from the stack.

* atreturn element on top of stack

* atthrows EmptyCollectionException if stack is empty

public T peek() throws EmptyCollectionException

{

if (isEmpty())

throw new EmptyCollectionException("stack");

return stack[top-1];

}

/**

* Returns true if this stack is empty and false otherwise.

* atreturn true if this stack is empty

public boolean isEmpty()

{

return top < 0;

}

//please replace "at" with the at symbol

Note:

peek() method will always pick the first element from stack. While calling peek() method when stack is empty then it will throw stack underflow error. Since peek() method will always look for first element ffrom stack there is no chance for overflow of stack. So overflow error checking is not required. In above program we handled underflow error in peek() method by checking whether stack is an empty or not.

3 0

4 years ago

Write a function named joinStrings() that keeps asking the user for words and joins them together. Each word should start with a

Tamiku [17]

Answer:

* The code is in Python

def joinStrings():

join = ""

while True:

str = input("Enter a word or Q to stop: ")

if str == "Q":

break

else:

join = join + " " + str

return join

print(joinStrings())

Explanation:

Create a function called joinStrings

Initialize join variable to hold the strings that will be combined

Create a while loop that stops when user enters "Q". Otherwise, ask the user for a new string and join it to the join variable with a space

When the loop is done, return the join

Call the function and print the result

4 0

3 years ago

Consider the code block below. What is the value of amount when this method is called twice, the first time using cookieJar(7) a

RUDIKE [14]

Answer:

C. 22

Explanation:

Given that the argument is being passed by value, there is no memory to consider. So cookieJar(7) returns 7 and cookieJar(22) returns 22.

If the argument parameter was passed by reference or pointer, then perhaps the value from cookieJar(7) would be considered with cookieJar(22).

Note, this code block really isn't doing anything other than returning the value passed into it. The "amount" variable is immediately set to 0, and then the value passed in is added to amount (which is 0), and returns. The following code could replace this function:

public static int cookieJar(int addCookies){

return addCookies;

}

The above code will return an equivalent output to the given code.

Notice, the function is not dependent on any previous call, so the value for each is unique to the call itself, i.e., cookieJar(22) returns 22 and cookieJar(7) returns 7.

So, C. 22 would be correct.

3 0

3 years ago

Write a function DrivingCost() with input parameters drivenMiles, milesPerGallon, and dollarsPerGallon, that returns the dollar

stira [4]

Answer:

// program in C++.

#include <bits/stdc++.h>

using namespace std;

// function to calculate cost

double DrivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon){

double cost;

//Expression to compute cost

cost = drivenMiles / milesPerGallon * dollarsPerGallon;

return cost;

}

// main function

int main()

{

double drivenMiles, milesPerGallon, dollarsPerGallon;

//initialise the variables

drivenMiles = 50;

milesPerGallon = 20.0;

dollarsPerGallon = 3.1599;

//Call function

double cost = DrivingCost(drivenMiles,milesPerGallon,dollarsPerGallon);

//Display result

cout<<"Driven miles : "<<drivenMiles<<endl;

cout<<"Miles per Gallon : "<<milesPerGallon<<endl;

cout<<"Dollars per Gallon : "<<dollarsPerGallon<<endl;

cout << fixed << setprecision(2);

cout<<"The total driving cost : "<<cost ;

return 0;

}

Explanation:

Declare and initialize drivenMiles with 50, milesPerGallon with 20.0 and dollarsPerGallon with 3.1599.Call the function DrivingCost() with these parameters,This will calculate the cost and return the value.Print the result after getting the cost.Similarly we can calculate cost for drivenMiles equals to 10 and 400 miles also.

Output:

Driven miles : 50

Miles per Gallon : 20

Dollars per Gallon : 3.1599

The total driving cost : 7.90

5 0

3 years ago