Answer:
// program in java.
import java.util.*;
// class definition
class Main
{
// mthod that fill the array with true and false
public static boolean [] createAlternating(int length)
{
// create array
boolean arr[]=new boolean[length];
// fill the array
for(int a=0;a<length;a++)
{
if(a%2==0)
arr[a]=true;
else
arr[a]=false;
}
// return array
return arr;
}
// main method
public static void main (String[] args) throws java.lang.Exception
{
try{
// scanner object to read input
Scanner scr=new Scanner(System.in);
System.out.print("Enter the size: ");
// read the size
int n=scr.nextInt();
// store the array
boolean []copy = createAlternating(n);
// print the array elements
for(int i=0;i<n;i++)
System.out.print(copy[i]+" ");
}catch(Exception ex){
return;}
}
}
Explanation:
Read the size of array from user with Scanner object.call the method createAlternating() with parameter length.Then create an array of size length.Fill the array true at even index and false at odd index.return the array and print the elements.
Output:
Enter the size: 10
true false true false true false true false true false
2.4: Star Pattern Write a program that displays the following pattern: * *** ***** ******* ***** *** * Output. Seven lines of output as follows: The first consists of 3 spaces followed by a star. The second line consists of 2 spaces followed by a 3 stars. The third consists of one space followed by 5 stars, and the fourth consists just of 7 stars. The fifth line is identical to third, th sixth to the second and the seventh to the first. CLASS NAMES. Your program class should be called StarPattern
Answer:
// here is code in java.
public class NAMES
{
// main method
public static void main(String[] args)
{
int n=4;
// print the upper half
for(int a=1;a<=n;a++)
{
for(int b=1;b<=n-a;b++)
{
// print the spaces
System.out.print(" ");
}
// print the * of upper half
for(int x=1;x<=a*2-1;x++)
{
// print the *
System.out.print("*");
}
// print newline
System.out.println();
}
// print the lower half
for(int y=n-1;y>0;y--)
{
for(int z=1;z<=n-y;z++)
{
// print the spaces
System.out.print(" ");
}
for(int m=1;m<=y*2-1;m++)
{
// print the *
System.out.print("*");
}
// print newline
System.out.println();
}
}
}
Explanation:
Declare a variable "n" and initialize it with 4. First print the spaces (" ") of the upper half with the help of nested for loop.Then print the "*" of the upper half with for loop. Similarly print the lower half in revers order. This will print the required shape.
Output:
*
***
*****
*******
*****
***
*
Write a program that converts a line of data containing three integers so that the data appears on three separate lines.
Answer:
Following are the program in C language
#include <stdio.h>// header file
int main() // main function
{
int x1,y1,z1; // variable declaration
printf(" Enter the three number :");
scanf("%d%d%d",&x1,&y1,&z1); // input the three number by user
printf(" Number 1:%d",x1); // dispaly number 2
printf("\n");// move the control to next line
printf(" Number 2:%d",y1);// dispaly number 2
printf("\n");// move the control to next line
printf(" Number 3:%d",z1);// dispaly number 3
return 0;
}
Output:
Enter the three number :12 23 45
Number 1: 12
Number 2: 23
Number 3: 45
Explanation:
In this program we have declared three variable x1, y1, z1 of type int .After that we take the input from user by using scanf function and finally printed the value on the three separate lines.
Write a program that prompts the user to enter the minutes (e.g., 1 billion), and displays the number of years and days for the minutes. For simplicity, assume a year has 365 days. Here is a sample run: Enter the number of minutes: 1000000000 1000000000 minutes is approximately 1902 years and 214 days
Answer:
// here is code in c++.
// include headers
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
long long int minutes,years,days;
long long int s;
cout<<"please enter the minutes:";
// read the minutes
cin>>minutes;
// make a copy
s=minutes;
// calculate days
days=minutes/1440;
// calculate years
years=days/365;
// calculate remaining days after years
days=days%365;
// print the result
cout<<s<<" minutes is equal to "<<years<<" years "<<days<<" days."<<endl;
return 0;
}
Explanation:
Read the number of minutes from user and assign it to variable "minutes" of long long int type.Make a copy of input minutes.Then calculate total days by dividing the input minutes with 1440, because there is 1440 minutes in a day.Then find the year by dividing days with 365.Then find the remaining days and print the output.
Output:
please enter the minutes:1000000000
1000000000 minutes is equal to 1902 years 214 days.
What class of DSS focuses on simulation and optimization?
Answer:
Model-Driven DSS
Explanation:
Model-Driven DSS emphasizes direct exposure and manipulation of a model like optimization, statistical, simulation models and financial model.
Model-driven DSS uses data and variables obtained by policy-makers to help decision-makers to analyze a situation. However, they are generally not data-intensive, which is normally a very massive database which is not required for model-driven DSS.
-What are the primary activities of the Business Intelligence system?
Answer:
The primary activity of the business intelligence system are as follow:
Data acquisition:
The data acquisition in the business intelligence system is the process of organizing all the source of the data. It is the process of cleaning, relating and cataloging all the source of the data.
Analysis the business intelligence:
It is the process of planning and creating the strategy of the business intelligence. It also involve the data mining and proper knowledge of the management of the business intelligence system.
An object reference provides a(an)______for an object and is used to gain access to the object (Points : 2) entry
target
instance
handle
Answer: Instance
Explanation: Instance is the term found in the object-orient programming concept. It is used for the realization of the variation present in any object specifically.The program execution at each time instant is known as the instance of program. Generation of realized instance is known as instantiation.
This helps in the accessing of the object in the program.Other options are incorrect entry , target and handle are not the technical term related with the accessing of object .Thus the correct answer is instance.
Which of the following is supported by a primary key?
Changeable over time
May be null
Unique
Updateable
Answer:
Unique.
Explanation:
Unique is supported by a primary key because of primary key we can uniquely identify the tuple so the attribute which has been set as primary key must contain values that are unique and these values cannot be null.These values should not be changeable over time and updateable because there is a chance if these values are manipulated a copy of it may be present in that attribute.So the primary key won't be able to uniquely identify the tuple.
How can an exception be explicitly raised in C++? How are exceptions bound to handlers in C++?
Answer:
Exceptions are raised using throw statement in c++.
Explanation:
Try block is used to keep the statements which we felt that they will raise an exception. Catch block is used to catch the exception which is thrown by the try block.
#include<iostream.h>
void main(){
int x,y,z;
try{
cout<"enter 2 numbers";
cin>>x>>y;
if(y==0)
throw y;
z=x/y;
}
catch(int x){
cout<<"exception caught";
}
}
Electric Bill Problem 3.0 (20 Points) What is the total cost of using the following at /kWh? a. 1600 W air conditioner for 6h b. 1200 W hair dryer for 15 min .4800 W clothes dryer for 30 min d. 900 W coffee maker for 10 min 200 W Play Station 3 for 2 h e. f. 50 W stereo for 3.5 h
Answer:
The total const is 13025 KWh
Explanation:
These are the steps to solve this problem:
Convert all the powers from W to KW dividing by 1000.Convert all the times on minutes to hours dividing by 60.Then you can apply energy consumption formula [tex]Energy = Power*Time[/tex] for any of the appliances. the results will be at KWh.Sum all the consumtions and you will have the total cost.Attached you will have a spreadsheet as a guidance. Any questions, just let me know.
Which of the following is a color effect that can be used to emphasize text?: *
a. Edging
b. Shading
c. Highlighting
d. Choices B and C
Answer: (C) Highlighting
Explanation:
Highlighting is the process in which we can use the different effects of the color for highlight the background and also used for emphasize the text. Highlight is very useful in highlighting the important line, text and any kind of special word.
It is mostly used for draw attention towards the important sentence in the given whole page or paragraph by highlighting some important line or words.
On the other hand, all the other options are incorrect as they does not involve in the color effect for emphasize the text.
Therefore, (C) is correct option.
Array aggregate assignment is possible in Java.
True or False
Answer: True
Explanation:
Yes, the given statement is true that the array aggregate assignment are possible in the java. As, the array assignment is basically possible in the structure and array assignment.
The assignment statement is basically generated by the array and structure assignment and it is also known as master variable.
The actual statement and prefix is basically applied to the assignment statement for the null value.
Examination of Internet records in order to reveal the identity of an anonymous poster is defined as
Doxing
Filtering
Spamming
Hacking
Answer: Doxing
Explanation: Doxing which is also referred as doxxing is defined as the revealing or publishing of the private records or information to the public.It is considered as the illegal practice which is base on the the internet service.The publicizing of the private data or confidential information is punishable offence.
Other options are incorrect because filtering is the elimination of the not required content, spamming is the activity of sending undesired bulk messages and hacking is the attacking of the system using false means to corrupt and steal data.Thus the correct option is doxing.
Write a for loop that displays your name and student number 12 times.
Example:
Mary Kaur ----- 123456
Answer:
// here is code in java.
import java.util.*;
// class definition
class Solution
{
// main method of the class
public static void main (String[] args) throws java.lang.Exception
{
try{
// scanner object
Scanner s=new Scanner(System.in);
// variables
String s_name;
int s_num;
System.out.print("Please enter the name:");
// read the student name
s_name=s.nextLine();
System.out.print("Please enter the number:");
// read the student number
s_num=s.nextInt();
// print name and number 12 times
for(int i=0;i<12;i++)
{
System.out.println(s_name+"----"+s_num);
}
}catch(Exception ex){
return;}
}
}
Explanation:
Create a scanner class object to read input from user.Read the student name and the number from user and assign them to variable "s_name" and "s_num".Print the student name and number 12 times with the help of for loop.
Output:
Please enter the name:Mary Kaur
Please enter the number:123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
Mary Kaur----123456
In a LOS communication, consider d = 60km, the requirement is to make two antennas (transmitter and receiver) such that the height of one antenna should be four time of the other. Considering this, find the appropriate heights of these two antennas.
Answer:
for ratio 1:4
height for antenna 1 = 42.36
and height for antenna 2 =169.46
Explanation:
given data
distance d = 60km
height h1 = 4 h2
to find out
find the appropriate heights of these two antennas
solution
we know here that distance between 2 antennas in LOS ( line of sight ) is express as
[tex]d = 3.57\sqrt{kh}[/tex] ......................1
here d is distance and k is curvature of earth i.e 4/3 and h is height
we know height is 1:4 so total height is 5 part to get ratio
put value in equation 1
[tex]60 = 3.57\sqrt{\frac{4}{3} h}[/tex]
solve it we get
h = 211.83
so for ration divide by 5
[tex]\frac{211.83}{5}[/tex]
= 42.36
so for ratio 1:4
so height for antenna 1 = 42.36
and height for antenna 2 = 4 × 42.36 = 169.46
Write a program in c++ that asks the user for a sequence of nintegers, where the user provides the number of elements n then each of the elements. After storing the n values in the array, ask the user for a value to search within those elements and return the index of the first instance (starting with 0 as the first element). Each integer should be stored in an array in the order they were read from the user. Follow the prompts and output format listed below. The user is expected to enter no more than 256 elements, the array should be able to hold no less and no more than 256.
Answer:
// here is code in C++.
#include <bits/stdc++.h>
using namespace std;
// function that return the first occurrence of item
int fun(int a[],int item,int n)
{
for(int y=0;y<n;y++)
{// find first occurance
if(a[y]==item)
// return index
return y;
}
}
// main function
int main()
{
// variables
int n,item;
// array that holds 256 number only
int a[256];
cout<<"enter the value of n:";
//read the value of n
cin>>n;
// if n is greater than 256, it will again ask for input
while(n>256)
{
cout<<"value of n should be less than 256:"<<endl;
cout<<"enter value of n again:";
cin>>n;
}
// read n numbers
cout<<"enter "<<n<<" numbers:";
for(int x=0;x<n;x++)
{
cin>>a[x];
}
// read item to be searched
cout<<"enter the number to be searched:";
cin>>item;
// calling the function and print the index
cout<<"item found at index "<<fun(a,item,n)<<endl;
}
Explanation:
Declare a variable "n" and create an array of size 256.Then read the value of "n". If n is greater than 256 then it will again ask user to enter a number less than 256.Then it will read "n" numbers from user and store them into array.Then it will read item to be searched and call the function with parameter array, item and n. function will find the first occurrence of the item and return its index.
Output:
enter the value of n:280
value of n should be less than 256:
enter value of n again:7
enter 7 numbers:12 4 7 9 7 6 21
enter the number to be searched:7
item found at index 2
Do you know some website that can make a questionnaire? And I can use the link then put up on the social media so that everyone can do it.
Answer:
You can use the following websites for more of a simple and smooth experience
SoGoSurvey.
Survey Monkey.
Typeform.
Google Forms.
Client Heartbeat.
Zoho Survey.
Survey Gizmo.
Survey Planet.
Hope this helped!
Explanation:
Answer:
brainly!
Explanation:
i think this is what you are talking about
Operational feasibility, which refers to user acceptance and support, as well as management acceptance and support, is also known as __________
Answer:Behavioral feasibility
Explanation: Behavioral feasibility is related with the human concerns. It describes about the reactions gained in the form of feedback from users towards the growth of computer system. The extent to which development is accepted and supported is evaluated.
The changes and development is made for the betterment of the system and makes it feasible for solving the issues. Operational feasibility is also related with the operation performed for the improvement of the system and the acceptance it receives from the users.
Explain the ‘V-Model’ for software testing?
Answer: V-model for software testing is referred to as a type of Systems development life cycle model under which a process tends to be executed in sequential manner i.e. V-shape. It is also referred as Verification & Validation model. This is mostly based on company of testing period for a development stage. The development of each and every step is associated with testing phase. Therefore next phase will start only, once the previous stage has been completed i.e. each development activity,has a testing activity corresponding.
: How can Internet technologies help a business form strategic alliances with its customers, suppliers, and others?
Answer:
Get much money
Explanation:
Beause the people need money
Write a C++ program that overloads a function named LinearSearch that searches an array of data of either integer data type, float, or double for a specific data. Test it in main by creating and assigning values to an array of integers, float, and double and searching each of them for some specific data.Please circle the part that is doing function/operator overloading and explain the advantages of using function/operator overloading in your code.
Explanation:
#include <iostream>
#include <vector>
#include <iomanip>
using namespace std;
/*
Overloading means equal function name with different call prototype each.
It's a useful tool that lets you think once and write similar role code twice or more times keeping equal function name.
Please look at lines 12-14: they are overloaded call prototype versions of LinearSearch with identical mission (to know if a value is present in a set)
*/
//#define GENERICS
#ifndef GENERICS // Conditional compilation statement
bool LinearSearch(vector<int> ,int);
bool LinearSearch(vector<float> ,float);
bool LinearSearch(vector<double>,double);
#else // Conditional compilation statement (uncomment line 10 statement)
template <typename genType>
bool LinearSearch(vector<genType> v, genType value); // LinearSearch (generic type parameters version)
#endif
int main(int argc, char *argv[]) { // Test code follows:
vector<int> vInt {1, -2, 3, -4, 5}; // Test data (int)
vector<float> vFlo {1.23456f, -2.35f, 3.1416f, -4.7f, 5.55f}; // Test data (float)
vector<double> vDou {1.234567890123456789, -2.35, 3.1415927, -4.7, 5.55}; // Test data (double)
cout <<3 << " is " << (LinearSearch(vInt,3) ?"":"not ") << "in: {";for(auto x:vInt) cout << setw(11) << x;cout << "}\n";
cout <<3.1416f<< " is " << (LinearSearch(vFlo,3.1416f)?"":"not ") << "in: {";for(auto x:vFlo) cout << setw(11) << x;cout << "}\n";
cout <<3.14 << " is " << (LinearSearch(vDou,3.1416) ?"":"not ") << "in: {";for(auto x:vDou) cout << /*setprecision(9)<<*/setw(11) << x;cout << "}\n";
return 0;
}
#ifndef GENERICS
// Overloaded function code follows:
bool LinearSearch(vector<int> v, int value) { // LinearSearch (integer parameters version)
bool found = false; // Until now we haven't found the value we are searching for,
for(auto x:v) found = found || x == value; // but if it is here found becomes true.
return(found);
}
bool LinearSearch(vector<float> v, float value) { // LinearSearch (float parameters version)
bool found = false;
for(auto x:v) found = found || x == value;
return(found);
}
bool LinearSearch(vector<double> v, double value) { // LinearSearch (double float parameters version)
bool found = false;
for(auto x:v) found = found || x == value;
return(found);
}
/*
So far, so good. It works! But, despite there was little effort involved, redundant code remains.
Is there any solution? Yes! It's called generic programming.
*/
#else
/*
Consider the following code:
- Template statement at first accepts a generic type as a parameter (genType)
- genType is used for both parameters (array and value to search)
- Template statements located after generic version of LinearSearch instructs compiler to generate each type version
Conclusions:
- Compared with overloaded versions generic code is more elegant and avoids completely redundancy
- It enhances overloading while keeping its advantages
*/
template <typename genType>
bool LinearSearch(vector<genType> v, genType value) { // LinearSearch (generic type parameters version)
bool found = false; // Until now we haven't found the value we are searching for,
for(auto x:v) found = found || x == value; // but if it is here found becomes true.
return(found);
}
template bool LinearSearch(vector<int> ,int);
template bool LinearSearch(vector<float> ,float);
template bool LinearSearch(vector<double>,double);
#endif
What is an abstract class? (Points : 2) A generalized class used only to create related derived classes
A class without any superclasses
A class from which we create many instances
Any subclass with more than one superclass
Answer:
A generalized class used only to create related derived classes
Explanation:
An abstract class is a class which cannot be instantiated on its own. It is defined using an abstract keyword. However, an abstract class can be inherited from and the derived class can actually be instantiated. For example:
abstract class A{
}
class B extends A{
void test(){
}
}
Here class A is an abstract class, while class B inherits from A. Now we can create an instance of class B as follows:
B b = new B();
b.test();
. A program will ""fall through"" a case section if it is missing the __________ statement.
Answer: Break statement
Explanation:
In the computer programming language, the break statement is the statement that mainly control the loop statement and it is basically used to terminating the given loop.
When the break explanation is experienced from inside the loop, then the iteration of the loop stops there and control comes back immediately from loop to the main proclamation in the loop. The program fall thorough the case section in the program if it missing the execution of the break statement.
Network 192.168.0.0 /16 is a private address pool. How many networks of 62 hosts can be created from it. (Include the first and last networks)
Answer:
1024
Explanation:
In the given network 192.168.0.0/16 there are 16 network bits and remaining 16 bits out of 32 bits can serve as host bits.
Now 62 hosts can be accomodated in 6 bits since [tex]2^{5}< 62<2^{6}[/tex]. Thus out of 16 hosts bits only 6 are needed to accomodate 62 hosts.
Therefore remaining 10 bits can be used to define other network address within the main network address.
So there can be total [tex]2^{10}= 1024[/tex] networks of 62 hosts.
Write a program that asks the user to enter five different, integer numbers. The program then reports the largest number and the smallest number.
Answer:
// here is code in C++.
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variables
int mi=INT_MAX;
int mx=INT_MIN;
int Num;
cout<<"enter five different Numbers:";
// read 10 non-negative Numbers
for(int a=1;a<=5;a++)
{
// read the input number
cin>>Num;
// find maximum
if(Num>mx)
{
mx=Num;
}
// find minumum
if(Num<mi)
{
mi=Num;
}
}
// print maximum and minimum
cout<<"maximum of five numbers is: "<<mx<<endl;
cout<<"minimum of five numbers is: "<<mi<<endl;
return 0;
}
Explanation:
Declare two variables "mi" & "mx" and initialize them with INT_MAX and INT_MIN respectively.Then read the five number from user and compare it with "mi" & "mx" ,if input is greater than "mx" then update "mx" or if input is less than "mi" then update the "mi". After all the inputs, "mi" will have smallest and "mx" will have largest value.
Output:
enter five different Numbers:6 19 3 44 23
maximum of five numbers is: 44
minimum of five numbers is: 3
What frequency band or bands do 802.11g, 802.11a, 802.11n, and 802.11ac use?
Answer:
802.11g: [tex]2.4Ghz[/tex]
802.11a: [tex]5Ghz[/tex]
802.11n: [tex]2.4Ghz[/tex] and [tex]5Ghz[/tex]
802.11ac: [tex]5Ghz[/tex]
Explanation:
802 is a Wi-Fi standard established by the IEEE in which, according to the corresponding standard, a data transmission rate is related.
About some of those standars:
802.11a: works with connections up to 54Mbps, operates in the 5GHz band,
802.11b: Works with connections up to 11mbps, operates in the 2.4GHz band,
802.11g: works with connections up to 54mbps, operates in the 2.4GHz band,
802.11n: Works with connections up to 600mbps, operates in the 2.4GHz and 5GHz band,
802.11ac: works with connections up to 1300Mbps, operates in the 5GHz band,
An object contains data and the instructions that manipulate the data (Points : 2) True
False
Answer:
True
Explanation:
An object is used as a central concept in OOP. It contains data (state it represents) and behaviors (the message) that has a meaning in your software application. Most programmers like using object-oriented programming languages because of these objects it carries. These objects make it easier to build solutions with complete functionalities effectively. It represents the properties which are the data state and a method which is what it can do. A customer’s object data or property, for instance, is every key detail of the customer while the method is what this object can do with the data.
Explain what is meant by "big data". Write three examples for Big Data.
Explanation:
Big Data :- It describes a large volume of data - both unstructured and structured that swamp a business on a day-to-day basis.Big data is very important for a company because it help to determine the root cause of the failures in real time,detects fraudulent,recalculate risks.
Big data in healthcare industry.
Big data in education industry.
Big data in media and entertainment industry.
Big data refers to the massive volumes of data that require advanced tools for processing and analysis. Examples include social media data, healthcare data, and e-commerce data. These large datasets offer new insights and create value in various fields.
Understanding Big Data :
Big data refers to the massive volume of information that exceeds the processing capacity of traditional data management tools. This concept not only highlights the vast quantity of data available but also emphasizes the advanced techniques required to analyze it. By leveraging large scale data sets, we can extract new insights, predict trends, and create new value in various fields.Examples of Big Data :
Social Media Data: Platforms like Face book, Twi tter, and In stagram generate enormous amounts of data daily through user interactions, posts, likes, and shares.Healthcare Data: Medical records, patient history, and real-time health monitoring systems create vast datasets that can be used to improve patient care and predict health trends.E-commerce Data: Online retailers such as Amazon track user behavior, purchase history, and product reviews to personalize shopping experiences and improve inventory management.-What is the purpose of a Business Intelligence system?
Answer: Business intelligence(BI) system is the tool that is used in the business field through companies and organization. The main cause of using BI system because it acts as the collection of the methods and technologies that help in the changing the raw and rough data to useful information which improves the functioning of the organization.
It provides better functioning by identification of the appropriate data,managing the information and making it efficient in a manner to make it presentable. These features make the organization to easily access the data and improves operations.
Which of the following correct modes, can be used to apply loopback policy?
Select one or more:
a. Merge mode
b. Replace mode
c. Remote mode
d. Local mode
Answer: (A) Merge mode and (B) Remote mode
Explanation:
The merge and remote mode is basically used in the loop-back policy. The loop back policy is used in the computer configuration as the group policy of the management editor.
The loop-back policy is basically allowed the administrator for access the setting of the group policy.When the merge mode are enable in the loop back policy then, the computer configuration are basically based on the particular computer configuration that are located in the computer active directory.
Remote mode is also used to apply in the loop back policy and when this mode enabled then, it change the user configuration. In the active directory of the replace mode the user settings is basically based on the configuration of the user setting.
.A(n) ____________ conversion occurs when C# converts one data type to another and the programmer has not provided code to perform the conversion.
a.explicit
b.implicit
c.narrowing conversion
d.widening
Answer:
The correct answer for the given question is option(b) i.e "Implicit conversion".
Explanation:
Implicit conversion converts one datatype to another without forcefully .it convert the one datatype to another automatically.The implicit type is a type safe conversion .
For example
int i = 57;
float f = l; // convert i to f without forcefully.
The explicit conversion converts one datatype to another forcefully .This type of conversion is not a type safe conversion.
double d = 765.12;
int i = (int)d; // convert d to i forcefully
so the correct option is option(b).