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3 years ago

Please Help, Thank you!

1 answer:

3 0

Answer: Devices connected in a Bluetooth network communicate with each other using ultra-high frequency (UHF) radio waves. These are electromagnetic waves with frequencies around 2.4 gigahertz (2.4 billion waves per second). UHF waves of different frequencies are used in microwave ovens, GPS systems and many other devices, White hat hackers employ the same methods of hacking as black hats, with one exception- they do it with permission from the owner of the system first, which makes the process completely legal. ... There are even courses, training, conferences and certifications for ethical hacking. A hub connects multiple computers together in a Local Area Network (LAN). All information sent to the hub is then sent through each port to every device in the network.

Hubs are unable to tell one computer from another, so they receive information on one port and then blindly forward it to all other ports — whether it was intended for those computers or not.

So even though you may only want to send information to one other computer, if you have five total computers on your network, then there will be four other computers receiving data that wasn’t intended for them. Showing results for are Infrared signals are suitable for long distance data communication..

Search instead for are Infra-red signals are suitable for long distance data communication..

Infrared laser systems can also be used for long-range communication (up to about 2.4 kilometres), with a maximum projected data rate of 16 Mbps. ... An infrared transmitting device, either a light-emitting diode (LED) or a laser diode, converts an electrical signal to an optical signal.

Web Browser is a software which is used to browse and display pages available over internet whereas web server is a software which provides these documents when requested by web browsers. ... Web browser sends an HTTP Request and gets a HTTP Response. Web server receives HTTP Request and sends a HTTP Response.

Simple LANs generally consist of cabling and one or more switches. A switch can be connected to a router, cable modem, or ADSL modem for Internet access. A LAN can include a wide variety of other network devices such as firewalls, load balancers, and network intrusion detection.

Coaxial cable, or coax (pronounced /ˈkoʊ. æks/) is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric (insulating material); many coaxial cables also have a protective outer sheath or jacket.

Terrestrial microwave- The most common type of microwave antenna is the parabolic “dish.”A typical size is about 3 m in diameter. The antenna is fixed rigidly and focuses a narrowbeam to achieve line-of-sight transmission to the receiving antenna. Microwave antennasare usually located at substantial heights above ground level to extend the range betweenantennas and to be able to transmit over intervening obstacles. To achieve long-distancetransmission, a series of microwave relay towers is used, and point-to-point microwave linksare strung together over the desired distance. Used in long haul telecommunicationsservice, as an alternative to coaxial cable or optical fiber.

You can implement a firewall in either hardware or software form, or a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets

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Consider the program below: public class Test { public static void main( String[] args ) { int[] a; a = new int[ 10 ]; for ( int

Anna11 [10]

Answer:

Result is: 65

Explanation:

To analyze this code let us asign line numbers:

public class Test {
public static void main( String[] args )
{ int[] a; a = new int[ 10 ];
for ( int i = 0; i < a.length; i++ )
a[ i ] = i + 2;
int result = 0;
for ( int i = 0; i < a.length; i++ )
result += a[ i ];
System.out.printf( "Result is: %d\n", result );
}
}

On line 3, an array of ints is created of size 10

On line 4 and 5 a for loop is used to add values to the array. at the end of the execution of line 4 and 5, the array will contain the following elements: [2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

On line 6 an int variable result is created and initialized to 0

line 7 and 8 allows a for loop through the array adding up all the elements of the array and assigning them to result

Line 9 outputs the value of result (Which is the total sum)

3 0

3 years ago

Which f the following is not a characteristic of igneous rock

Ne4ueva [31]

Answer:

There are no answers but here is how you classify one with these characteristics so if its not on here probably that one hope this helps :)!

Explanation:

Igneous rocks are formed when melted lava or magma cools and crystallizes, and their unique traits are based on this process. They are strong because their mineral grains grow together tightly as they cool, and their minerals are usually black, white, or gray. They have a texture similar to something baked in an oven, like black bread or peanut brittle. Some of the main minerals in igneous rocks are feldspar, quartz, olivine and mica. The size of the minerals depends on the depth of the magma that formed the rock. Deeper magma cools more slowly and forms larger crystals. Rocks that cool over a few months have microscopic mineral grains and are called extrusive. Rocks that cool over thousands of years have small to medium grains and are called intrusive. Rocks that cool over millions of years have large pebble sized grains and are called plutonic. Granite and basalt make up the majority of igneous rocks. Basalt is dark and fine-grained with minerals rich in magnesium and iron. It is either extrusive or intrusive and is the primary rock on the ocean floor. Granite is light and coarse-grained and rich in feldspar and quartz. It is plutonic and less dense than basalt. Granite is found nearly everywhere beneath the continents. The word "igneous" comes from the Latin word "fire" and is related to the melting process that forms these rocks.

3 0

2 years ago

Write a program to input a number.Find the sum of digits and number of digits

ki77a [65]

omg a computer program

i love it

okay so i will assume taht you want the program to be in python

here we go

a = int(input("Enter a number ")

b = int(input("Enter another number ")

sum = a + b

def Digits(sum):

count = 0

while sum != 0:

sum //= 0

count += 1

return count

print(f"Sum is {sum} \nnumber of digits are {Digits(sum)}")

7 0

2 years ago

Read 2 more answers

Give an example of an occasion when you used logic to solve a problem

netineya [11]

You can use it when like confirming a policy

8 0

3 years ago

Which of the following are correct? I. Hold the middle mouse button to rotate the model on the screen. II. To pan the model, hol

evablogger [386]

Answer:

II and III are correct

Explanation:

The software that the question is referring to here is the computer-aided design (CAD) software called Inventor by Autodesk.

I. Hold the middle mouse button to rotate the model on the screen. False

This will pan the model instead of rotating.

II. To pan the model, hold down the Ctrl key and the middle mouse button. True

Some versions need you to hold down the ctrl key and the middle mouse button to pan, while others is just the middle mouse button then you drag the mouse around. The middle mouse is the scroll wheel on most mice today. You basically, just hold down the scroll wheel as you move the mouse to pan the model.

III. Use the mouse scroll wheel to zoom in and out of the model. True

To zoom in or out, one will need to rotate the mouse scroll wheel forward to zoom in and backward to zoom out.

8 0

3 years ago