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omeli [17]
3 years ago
6

What is the device that converts the signals to and from the wires so that the data can be sent and received by the computer?

Computers and Technology
1 answer:
netineya [11]3 years ago
8 0

Answer:

E. Modem

Explanation:

A network comprises of two or more interconnected devices such as computers, routers, switches, smartphones, tablets, etc. These interconnected devices avail users the ability to communicate and share documents with one another over the network.

In order for a network to exist or be established, the devices must be turned (powered) on and interconnected either wirelessly or through a cable (wired) connection.

In Computer Networking, a node is the physical device that make up a network and are capable of sending, receiving, creating and storing data in communication.

Examples of network nodes are routers, hubs, computer, switches, smartphone, printers, modem, etc.

A modem is a networking device that converts the signals to and from the wires such as a telephone line, so that the data can be sent and received by the computer.

Basically, a modem is an abbreviation for modulator and demodulator and as such it is designed to convert signal from one network device to signals that another network device such as a computer can understand or read.

When sending a signal (data) over a network, a modem converts (modulate) digital data signal to an analogue signal and transmits it over a telephone line or other communication lines. Also, when receiving an analogue signal, a modem converts (demodulate) the signal to a digital data signal.

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1. Write a method isMultiple that determines, for a pair of integers, whether the second integer is a multiple of the first. The
zhannawk [14.2K]

Answer:

see explaination for code

Explanation:

Implement using JAVA

import java.util.Scanner;

public class Multiples {

public static boolean isMultiple(int first, int second){

if(second%first == 0)

return true;

else

return false;

}

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

while(true){

System.out.print("Enter one number: ");

int first = sc.nextInt();

System.out.print("Enter a second number: ");

int second = sc.nextInt();

if(isMultiple(first, second))

System.out.println(second+" is multiple of "+first);

else

System.out.println(second+" is not multiple of "+first);

System.out.print("Do you want to enter another pair(y/n)? ");

char c = sc.next().charAt(0);

if('y' != Character.toLowerCase(c))

break;

}

}

}

/*

Sample run:

Enter one number: 7

Enter a second number: 28

28 is multiple of 7

Do you want to enter another pair(y/n)? y

Enter one number: 8

Enter a second number: 24

24 is multiple of 8

Do you want to enter another pair(y/n)? y

Enter one number: 4

Enter a second number: 2

2 is not multiple of 4

Do you want to enter another pair(y/n)? n

*/

8 0
3 years ago
Which of these loops will initialize each element in the array ar to hold the value 4 ?A. for (int i = 1; i < ar.length; i++
Dima020 [189]

Answer:

Option (d) is correct.

Explanation:

In java language "ar.length" is used to tells the size of the array. The array is used to declare more than one variable. Its index value is started from 0. so when a user needs to initialize the value of an array, they need to start the index value at 0. because ar[0] indicates the first variable of an array.

In option (d), index value is started from 0 and ends with (array_size-1). so it gives the accessed to all the variable of an array and the statement "ar[i]=4;", initialize the value 4 to all array variable.  

while another option is not valid because--

  • In option a, Index value starts from 1 which accesses the second variable of an array.
  • In option b, the statement "i<= ar.length;", gives an unbound array exception because it took the size greater than the array size.  
  • In option c, statement "i<ar.length-1;", can not give accessed to the last element of an array.

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Answer:

Yes

Explanation:

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In linked list front always points to the starting of the list and rear always points to the last element of the list. In case of circular linked list rear and front points to the same reference. In circular linked list next element of the last element refers to the first element.in this scenario it is possible for the front and rear references to be equal.

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4 years ago
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