What are the tab keys used for on a keyboard

A network administrator has been given a network of 172.16.85.0/21 and wants to know the usable range of IP addresses on that su

viktelen [127]

Answer:

The correct answer to the following question will be option C.

172.16.80.1-172.16.87.254

Explanation:

IP Address: IP Address stands for Internet Protocol Address, a unique numerical label allotted to every computer network that are connected to the network of the computer and communicate through the internet protocol.

An IP address can be separated by periods and having four numbers that are called Octet. Range of IP address can be from 0 to 255.
We have to keep the first 21 bits and start setting all from the 22nd bit on to 0 (zero).

To get the suitable and the correct range of the address, we add and subtract 1 from the given broadcast address i.e.,172.16.85.0/21.

So, option C is the right answer and no other option is usable according to the given explanation and the address given by the administrator.

3 0

2 years ago

ppose we have a Rectangle class that includes length and width attributes, of type int, both set by the constructor. Define an e

vichka [17]

Answer:

Check the explanation

Explanation:

#include <bits/stdc++.h>

using namespace std;

class Rectangle{

public:

int length;

int breadth;

Rectangle(int l,int b){

length = l;

breadth = b;

}

int area(){

return length*breadth;

}

int perimeter(){

return 2*(length+breadth);

}

bool equals(Rectangle* r){

// They have the exact same length and width.

if (r->length == length && r->breadth == breadth)

return true;

// They have the same area

if (r->area() == area())

return true;

// They have the same perimeter

if (r->perimeter() == perimeter())

return true;

// They have the same shape-that is, they are similar.

if (r->length/length == r->breadth/breadth)

return true;

return false;

}

};

int main(){

Rectangle *r_1 = new Rectangle(6,3);

Rectangle *r_2 = new Rectangle(3,6);

cout << r_1->equals(r_2) << endl;

return 0;

}

8 0

2 years ago

Corinne would like to click on the link at the bottom of a Web page but she only sees the top portion of the page. She should __

IgorLugansk [536]

Corinne should scroll down to the bottom of the page to where she can see the link

7 0

2 years ago

Read 2 more answers

Urgent. I will mark you brainliest. explain why cyber warfare is a real threat.

stellarik [79]

Answer: Cyber warfare is a real threat since being able to hack another computer especially a countries computer with lots of info in their weaknesses can lead to their downfall. Since they can even possibly if their skilled enough hack their entire data base system and leak it to the public and that wouldn't be good for them not in a single possible way. That's the reason it's dangerous not only that but also because they can access their servers; which can let them access anything online from the whole country including banking information military info which can let them know which area there gonna go to next equipment there gonna bring and where they're gonna launch missiles, bombs, even nukes if they decide to launch one. And being able to hijack the computer that launches the nukes can make the hacker launch the nuke to a different place or launch the nuke on the country trying to launch the nuke.

Explanation:

3 0

2 years ago

Read 2 more answers

The Pentium 4 Prescott processor, released in 2004, has a clock rate of 3.6 GHz and voltage of 1.25 V. Assume that, on average,

Zarrin [17]

Answer:

a) C = 3.2 x 10^-8 F, C = 2.9 x 10^-8 F

b) 10%, 42.86%, 0.11, 0.75

c) 0.849 volts to maintain the same leakage current in the Pentium 4 Prescott Processor. 0.783 Volts to maintain the same leakage current in the Core i5 Ivy Bridge Processor.

Explanation:

For the Pentium 4 Prescott processor:

Clock rate (f) = 3.6 GHz

Voltage (V) = 1.25 V

Static Power Consumption = 10 W

Dynamic Power Consumption = 90 W

For the Core i5 Ivy Bridge processor:

Clock rate (f) = 3.4 GHz

Voltage (V) = 0.9 V

Static Power Consumption (SP) = 30 W

Dynamic Power Consumption (DP) = 40 W

(a) To find the average capacitive loads, use the formula:

DP = (1/2) x C x V² x f

Rearranging:

C = (2 x DP)/(V² x f)

For the Pentium 4 Prescott processor:

C = (2 x 90) / [(1.25)² x 3.6 x 10^9]

C = 3.2 x 10^-8 F

For the Core i5 Ivy Bridge processor:

C = (2 x 40) / [(0.9)² x 3.4 x 10^9]

C = 2.9 x 10^-8 F

(b) Percentage of the total dissipated power comprised by the static power can be found by the formula:

[Static Power/(Static Power + Dynamic Power)] x 100

For the Pentium 4 Prescott Processor:

[10/(90+10)] x 100 = 10%

For the Core i5 Ivy Bridge Processor:

[30/30+40] x 100 = 42.86 %

Ratio of static power to dynamic power for each technology can be computed as:

Pentium 4 Prescott: 10/90 = 0.11

Core i5 Ivy Bridge: 30/40 = 0.75

(c) The total dissipated power can be calculated by:

P = DP + SP

For Static Power we have the formula:

SP = VI where I is the leakage current.

I = SP/V

For Pentium 4 Prescott: I = 10/1.25 = 8A

For Core i5 Ivy Bridge: I = 30/0.9 = 3.33 A

The total disspited power is reduced by 10%, meaning the ratio of new power to old power must be 90% = 0.9. So,

New Power/Old Power = 0.9

For Pentium 4 Prescott:

DP + SP / 100 = 0.9

VI + CV²F = 0.9 x 100

V(8) + (3.2 x 10^-8)V²(3.6 x 10^9) = 90

8V + 115.2V² - 90 = 0

By solving the quadratic equation, we get the positive answer as 0.849. This means that the voltage should be reduced to 0.849 volts to maintain the same leakage current in the Pentium 4 Prescott Processor.

For Core i5 Ivy Bridge:

DP + SP / 70 = 0.9

V(3.33) + (2.9 x 10^-8)V²(3.4 x 10^9) = 70 x 0.9

3.33V +98.6V² -63 = 0

By solving the quadratic equation we get the positive answer as 0.783. This means that the voltage should be reduced to 0.783 Volts to maintain the same leakage current in the Core i5 Ivy Bridge Processor.

6 0

3 years ago