Describe practices that enable software designers to think about using patterns?

Answer:

d) all of the above.

Explanation:

Flash Memory is a memory storage that is non volatile.It can be erased electrically and reprogrammed since it is a type of ROM(Read Only Memory).It is the least expensive form of semiconductor memory.It offers lower power consumption and can be erased in large blocks.

Hence the answer to this question is option d.

Answer: True

Explanation:

  Yes, the given statement is true that the left uncaught, the throwing exceptions caused stop execution or terminate the program. The uncaught exception is basically refers that the compiler control the termination function in the program.  

Left Uncaught exception basically cause termination of the program and also implement the interface in the uncaught exception handler in the particular java thread.

Answer:

r=5.

Explanation:

Since we know we can convert a a number with any base to base ten(10) by multiplying the corresponding powers of the base.Stating form the LSB(Least Significant Bit) and with the power 0 and the power will increase by 1 as we move to MSB(Most Significant Bit).

[tex]4*r^1+1*r^0 = 21[/tex]

[tex]4r = 21 -1[/tex]

[tex]4r=20[/tex]

[tex]r=5[/tex]

Answer:

Following are the decimal num

a. FFFF=65535

b. 0123=291

c. 005F=95

d. 026A=618

e.  73B0=29616

Explanation:

Conversion of hexa decimal number to decimal number is done by multiplying the digit with corresponding power of 16.

FFFF= 15 x 16³+15 x 16² + 15 x 16¹+ 15 x 16⁰.

        =61440+3840+240+15

        =65535

0123=0 x 16³+1 x 16²+2 x 16¹+3 x 16⁰

       =0+256+32+3

       =291

005F=0 x 16³+0 x 16²+5 x 16¹+F x 16⁰

        =0+0+80+15

         =95

026A=0 x 16³+2 x 16²+6 x 16¹+A x 16⁰

         =0+512+96+10

         =618

73B0=7 x 16³+3 x 16²+B x 16¹+0 x 16⁰

         =28672+768+176+0

         =29616

Answer:

#include <iostream>

using namespace std;

int main() {

   srand(time(0));

   for(int i=0;i<5;i++)

   {

      double f = (double)rand() / RAND_MAX;//generating random numbers.

       double a= 5.0 + f * (15.0 - 5.0);//random numbers in range provided.

       cout<<a<<" ";

   }

return 0;

}

Explanation:

The above program generate five random numbers in the range 5.0 to 15.0.The function rand() is used to generate random numbers.First we have to call srand(time(0)) otherwise the rand() function will generate same random numbers over and over every time.

Answer:

  Wi-Fi(Wireless fidelity) is the networking technology that helps in providing the internet connectivity to the users. The Wi-Fi is all around the surrounding due to several Wi-Fi connections the users demand and use. It creates the networking environment where internet access becomes easy.

There are drawback to Wi-Fi service range that covers a large area is the high number of users.The addition of many users slow down the data rate and accessing .The radiation from this service is also a negative side of the Wi-Fi pervasiveness.

Final answer:

The downsides to the pervasiveness of Wi-Fi include the digital divide, security risks, and the psychological impact of being constantly connected. To mitigate these issues, digital literacy, cybersecurity, and healthy digital habits are crucial.

Explanation:

Wi-Fi's pervasiveness indeed comes with downsides alongside the immense benefits it provides in terms of connectivity and access to information. One major concern is the digital divide, a gap that is widening between those who have access to technology and those who do not, both locally and globally. This phenomenon can lead to disparities in access to information and inequalities in educational and economic opportunities.

Another significant concern is security risks. With Wi-Fi networks, there is the potential for eavesdropping and unauthorized access to communications, raising issues of privacy and data protection. As we further integrate Wi-Fi and other wireless technologies into critical infrastructure and personal devices, the risk for systemic failures and technological vulnerabilities increases, which could have severe consequences in the event of natural disasters or targeted attacks.

Answer:

The correct answer is c. Organizational goals change over time.

Explanation:

Develop a long-term IT strategy is an important goal to provide planning and solutions to an organization but it is important to reexamine the IT strategy on a regular basis to do corrections on this strategy because organizational goals change over time.

Answer:

// here is code in c++ to find the approx value of "e".

#include <bits/stdc++.h>

using namespace std;

// function to find factorial of a number

double fact(int n){

double f =1.0;

// if n=0 then return 1

if(n==0)

return 1;

for(int a=1;a<=n;++a)

       f = f *a;

// return the factorial of number

return f;

}

// driver function

int main()

{

// variable

int n;

double sum=0;

cout<<"enter n:";

// read the value of n

cin>>n;

// Calculate the sum of the series

  for (int x = 0; x <= n; x++)

  {

     sum += 1.0/fact(x);

  }

  // print the approx value of "e"

    cout<<"Approx Value of e is: "<<sum<<endl;

return 0;

}

Explanation:

Read the value of "n" from user. Declare and initialize variable "sum" to store the sum of series.Create a function to Calculate the factorial of a given number. Calculate the sum of all the term of the series 1+1/1!+1/2!.....+1/n!.This will be the approx value of "e".

Output:

enter n:12

Approx Value of e is: 2.71828

Euler's number, e, can be approximated using a series expansion. The provided C program calculates e by summing the series up to 1/n! where n is entered by the user.

Euler's number, e, is a mathematical constant approximately equal to 2.71828. It can be computed using the series expansion:

Below is a C program that approximates e by computing the sum up to 1/n! where n is an integer entered by the user.

Answer:

False.

Explanation:

When we declare a variable as reference type we have to initialize that variable otherwise the compiler will give error that the reference variable is not initialized.You also cannot initialize the variable Foo& with NULL value because it is a reference variable and we have to initialize it.

On the other there is no need to initialize the variable Foo * since it is a pointer it can also store NULL value.

So the answer is only Foo* can store NULL value not Foo &.

Answer:

transpose(linspace(2,32,11))

Explanation:

To get the equally spaced elements you can use:

linspace is the command for generating a linearly spaced vector.

For instance, the command:

linspace(element1,element2,n)

generates n points, between element1 and element2

The spacing between the points is calculated by

[tex]\frac{element2-element1}{n-1}[/tex]

In your case, the linspace command will create a vector with 1 row and 11 columns (1x11).

To get the column vector:

In order to convert this vector into one with 11 rows and 1 column (11x1), you can use:

tanspose(vector)

where vector is linspace(element1,element2,n)

Answer:

In object oriented programming methodology, the attention is that capture the main structure and conduct of data frameworks into little modules that joins the two information and procedure.

The main principle of Object Oriented Design (OOD) is that it helps in improve the quality and efficiency of framework analysis and configuration by make the system more progressively usable.

The software Programming testing is a significant period of the product advancement cycle of the life. Testing is the way toward executing the main structure of the program with the help of main objective and also discovering mistakes.

In today world the situation of the object oriented ideas are utilized all through programming designing. Testing of item arranged programming is unique in relation to testing with the traditional programming.

Answer:

 The evaluation of the network is basically depend upon the various factors such as the stage, type and size of the network development. The main purpose for the evaluation of the network is that the system works with high efficiency without any interruption in the network.

According to the size and the type of the network we can easily evaluate the particular network in the system and then we can easily work on the network infrastructure to make the network more efficient.

Explanation:

The main differences between Javascript and other programming languages are as following :-

Answer:

USA host World Cup in 1994 1994 FIFA World Cup

Explanation:

USA host World Cup in 1994 FIFA World Cup

it was the 15th edition of FIFA World Cup

and Brazil was won the tournament

Brazil beat Italy by 3–2 in  penalty shoot-out

it was play between 17 June to 17 July and 24 team play this World Cup

and there matches played = 52

and 9 cities host this game

United States of America was chosen as the host by FIFA on the 4 July, 1988

Answer: Reports

Explanation:

 Some companies always ask to the employees to create the particular report for the session with their clients.

As, the report is the main communication channel between the company employees and clients where all the information are complied together and focus for transmitting the data clearly.

Efficient reports are basically help in the decision making and problem with sufficient knowledge.  

On the other hand, all the other options are not needed for session with the clients in the organization. Therefore, report is the correct option.

Answer:

F(a,b,c,d)=b'c' + a'cd' + ab'd'.

Explanation:

The image of the corresponding k-map is attached to this answer please refer it.By the sop given in the question the k-map is formed.There are 3 groups formed 1 group of four 1's and 2 groups of 2 1's.Hence there are three sop and the sop is reduced from the previous SOP.

Answer:

Following are the program in C++

#include <iostream>// header file

using namespace std;

int main() // main function

{

   int num; // variable declarartion

   cout<<" Enter the number:";

   cin>>num; // user input

   num=abs(num); // finding the absolute

   cout<<num; // display number

   return 0;

}

Output:

Enter the number:-90

90

Explanation:

In this program we have declared a variable "num" of type int. After that we find the absolute value by using abs function and finally display the variable "num".

Answer:

e

Explanation:

the valid sql syntax for creating table is

CREATE TABLE table_name (

column_name column_type

)

varchar and int are the valid sql types not string and integer

AS is used in select queries to aggregate results under given name

Answer: (A) Only unique

Explanation:

 Enumeration basically contain only unique value as enumeration is define as the set of the numeric values that is finite and it is represent specifically by the identifiers which is known as the enumeration constant.  

It only work with the finite values and also hide all the un-relevant and unnecessary information from the programmers. Enumeration is the type of the data type variable which contain only previous declared values.  

Answer: Steve Jobs made several contributions towards technology by introducing the range of Apple devices and technologies .he started the Apple Incorporation.The technologies introduced by his company are as follows:-

 Bill Gates is the founder of Microsoft incorporation and made a lot of development in that field to create various software for the operating system.the creation of "Microsoft Window" was started by him and some other contributions are as follows:

Answer:

Steve jobs also made the Macintosh

Explanation:

Answer:

All of the above.

Explanation:

All the information provided in the question about stack is correct.

A stack pointer(SP) is a register to hold the address of the next free location that is present in the stack at any given time.

The growth of the stack is downwards it goes form high memory to low memory.The first address pushed be stored on the higher memory location in the stack and the next address will be stored at lower memory location.

A stack stored the temporarily for the duration of the execution of the program.

Answer:

O(NlogN)

Explanation:

The time complexity of quick sort in worst case is O(N²) but the average case time complexity of quick sort is O(NLogN).The efficiency of quick sort totally depends upon the pivot.If the pivot is the smallest or the largest element in the array every time then the time complexity of quick sort algorithm will come out to be O(N²).

Answer:

// here is code in java.

import java.util.*;

// class definition

public class Main {

   // main method of the class

   public static void main(String[] args) throws Exception {

       // Scanner object to read date

       Scanner in = new Scanner(System.in);

       System.out.print("Enter a date in format mm/dd/yyyy to check:");

       // read the date from user

       String inp_date = in .next();

       // split the date with "/" delimeter

       String[] ip = inp_date.split("/");

       // find month from date

       int inp_month = Integer.parseInt(ip[0]);

       // find day from date

       int inp_day = Integer.parseInt(ip[1]);

       // find year from date

       int inp_year = Integer.parseInt(ip[2]);

       // boolean variable

       boolean flag = true;

       // print the input date

       System.out.println("Your Entered date was: " + inp_date);

       // check month is valid or not

       if (inp_month < 1 || inp_month > 12)

       {

           System.out.println("Entered Date is invalid:");

           System.out.println("The input month  is not from 1 - 12.");

           flag = false;

       }

       //check day is valid or not

       else if (inp_day < 1) {

           System.out.println("Entered Date is invalid:");

           System.out.println("The value of day is less than 1.");

           flag = false;

       }

       // check days in those month which has 30 days

       else if ((inp_month == 4 || inp_month == 6 || inp_month == 9 || inp_month == 11) && inp_day > 30) {

           System.out.println("Entered Date is invalid::");

           System.out.println("This month have only 30 days, but Entered day is greater than 30.");

           flag = false;

       }

       // if month is February then check leap year and days

       else if (inp_month == 2 && ((inp_year % 4 == 0) && (inp_year % 100 != 0))) {

           if (inp_day > 29) {

               System.out.println("Entered Date is invalid::");

               System.out.println("In a leap year, only 29 days in February.");

               flag = false;

           }

       }

       // if month is February and year is non-leap

       else if (inp_month == 2 && inp_day > 28) {

           System.out.println("Entered Date is invalid:");

           System.out.println("In a non-leap year, only 28 days in February.");

           flag = false;

       }

       // if all are valid

       if (flag)

           System.out.println("Entered Date is valid:");

   }

}

Explanation:

Read the date from user in mm/dd/yyyy format with the help of Scanner object. Extract day, month and year from the date. Then check whether month is between 1-12 or not and print appropriate message. After that check day is less than 1 or not, if not then print reason. Check the days in those month which has 30 days in it.If month is February then check for leap year and day is greater than 29 then print reason. Else if month is February and year is non-leap then check days whether it is greater than 28 or not. In last If value of flag is true then print date is valid.

Output:

Enter a date in format mm/dd/yyyy to check:2/30/2012                                                                          

Your Entered date was: 2/30/2012                                                                                              

Entered Date is invalid::                                                                                                    

In a leap year, only 29 days in February.

Answer:

 URI is the uniform resource identifier and it is basically a sequence of the character which identify the physical and logical resources. The uniform resource identifier basically contain the predefined set of rules and syntax and also maintain the extensibility hierarchical schema.

There are basically two types of URI that are:

  1)  Uniform Resource Name (URN)

  2) Uniform Resource Locator (URL)

For example: HTTP protocol , file transfer protocol (FTP).

Answer:

Following are the program in c++

if(score>= 90)

 // check if score 90 or higher

{

comments = "Excellent"; // initialize comments to excellent

}

else if(score<90 && score >= 80)

// check if  when score is between 80 and 89

{

comments = "Good";   //initialize comments to good

}

else

//when score is less than 80.

{

comments = "Try Harder"; //initialize comments to try harder

}

Explanation:

Following are the program in c++ language

#include<iostream> // header file

using namespace std;  // namespace

int main() // main function

{

string comments; // variable

int score;  // variable declaration

cout<<" enter score ";

cin>>score;

if(score>= 90)

{

comments = "Excellent"; // initialize comments to execellent

}

else if(score<90 && score >= 80)

{

comments = "Good";   //initialize comments to good

}

else

{

comments = "Try Harder"; //initialize comments to try harder

}

cout<<comments;

return(0);

}

Output:

enter score

45

Try Harder

In this we check the condition  

if score>= 90 then it store the Excellent in variable  comments of type string

if(score<90 && score >= 80)

it store the Good in variable comments of type string.

otherwise it store harder in variable comments of type string.

Answer:

A) True

B) False

C) False

D) True

Explanation:

In the following expressions we are evaluating whether a value is greater than (>), less than (<) or equal (==) to another value.

A) The expression is pointing out that 12 is greater than 1, which is True.

B) The expression is pointing out that 2 is less than 0, which is False

C) The expression is pointing out that 5 is equal to (3*2); 3*2=6 therefore 5 is not equal to 6. The answer is False

D) The expression is pointing out that 5 is equal to 5, which is True.

Final answer:

Social media in the future is likely to continue evolving and impacting how we interact with the world. It may integrate virtual reality and augmented reality technologies, utilize advanced algorithms and AI, and prioritize privacy and security.

Explanation:

Social media in the future is likely to continue evolving and impacting how we interact with the world. It will likely become more integrated into our daily lives, affecting various aspects such as communication, entertainment, and information dissemination.

One possibility is the increased use of virtual reality (VR) and augmented reality (AR) technologies in social media. Users might be able to experience virtual environments and interact with others in a more immersive way. Social media platforms could also utilize advanced algorithms and artificial intelligence (AI) to provide more personalized content and recommendations based on user preferences and behavior.

Additionally, social media may see advancements in privacy and security features to address concerns over data protection and online safety. New regulations could be implemented to ensure the responsible use of social media and protect users from harmful or misleading content.

Answer:

Final Keyword:-It is defined in the class that has the property of non-inheritance and can declare the constant variables. It has no re-initialization function.At the time of the final declaration,it is required that the variable should be initialized.

Static Keyword:-It is used in a particular class for defining it's member so that it can used for any object of the class.Static method in a class can call this keyword. It can has the property of being re-initialized.

Answer:

d. 1990s

Explanation:

The World Wide Web is a kind of friendly information system that uses hypertext, and since its creation has made Internet available for most people.

The Internet already existed quite before the World Wide Web: the first computer network was ARPANET (created in 1969), a project of the Advanced Research Projects Agency of the United States Department of Defense.

Further developments in computers' protocols (ways in which computers communicate with each other) resulted in a network of networks, or the Internet, in 1983.

Although the World Wide Web was a proposal first published on March 12, 1989, by Tim Berners-Lee of the European Nuclear Research Center (CERN) --this is why it is considered that the World Wide Web was created in 1989-- the idea came into life at the end of the year 1990, for the following reasons:

Well, by the end of December 1990, in a NeXT computer, and after the creation of the first web server and the first web page browser, the first web site, running at CERN, appeared on December 20, 1990.

This idea was rapidly adopted outside the CERN in 1991 and, by the end of the 1990s, more than 130 million people could access the Internet using the World Wide Web technology.

In conclusion, the World Wide Web went live in the decade of 1990s: was a project, a proposal by the end of 1989 and started to work as a fast-adopted technology at the beginning, and throughout, the 1990s.

Answer:

b

Explanation:

Answer: The difference between the UML state diagram and state transition diagram are as follow:-