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:

[tex]126_{10}=1111110_2[/tex]

Explanation:

In order to get this convertion done, we have to divide by two the decimal number, take note of the quotient and reminder, then divide the result by two until the result of the division is zero.

[tex]126| 2[/tex]

[tex]quotient_1=63\\remainder_1=0[/tex]

[tex]63| 2[/tex]

[tex]quotient_2=31\\remainder_2=1[/tex]

[tex]31| 2[/tex]

[tex]quotient_3=15\\remainder_3=1[/tex]

[tex]15| 2[/tex]

[tex]quotient_4=7\\remainder_4=1[/tex]

[tex]7| 2[/tex]

[tex]quotient_5=3\\remainder_5=1[/tex]

[tex]3| 2[/tex]

[tex]quotient_6=1\\remainder_6=1[/tex]

[tex]1| 2[/tex]

[tex]quotient_7=0\\remainder_7=1[/tex]

Now the last remainder is the most significant bit, and the first remainder the least significative, so:

[tex]126_{10}=1111110_2[/tex]

Answer:

DELETE

Explanation:

DELETE keyword is used to remove a row in a table. The actual syntax is as follows:

DELETE from <TableName> where <Condition>;

For example:

DELETE FROM employee where name='Peter';

This will remove employee with the name Peter from the Employee table.

DROP on the other hand is used to delete the entire table without focussing on a particular row.DROP syntax is as follows:

DROP TABLE <TableName>;

Answer:

The answer is the program, in the explanation

Explanation:

I am going to write a C program.

int main(){

int grade = -1; /*The grade will be read to this variable*/

/*This loop will keep repeating until a valid grade is inserted*/

while(grade < 0 || grade > 100){

         printf("Insert the student's grade: %n");

         scanf("%d", &grade);

}

/*The conditional according to the grade value*/

if (grade >= 90){

     printf("Your grade is A\n");

}

else if (grade >= 80 && grade < 90){

     printf("Your grade is B\n");

}

else if (grade >= 70 && grade < 80){

     printf("Your grade is C\n");

}

else if (grade >= 60 && grade < 70){

     printf("Your grade is D\n");

}

else{

    printf("You got a failling grade\n");

}

return 0;

}

Answer:d)Intellisense

Explanation: Visual Studio.NET is the tool for the development of the application .Intellisense is the type of code that is found in the Visual Studio.NET which is used for the intelligent completion of text or code. The factors present in the Visual studio NET has are tracking of the values, increasing the understanding of code,presenting the class member etc.

Other options are incorrect because real time error checking is for the checking of the error raising at the time of execution, Quick info is for gaining data rapidly and outlined code are for display of the hierarchical structure of codes.Thus, the correct option is option(d).

Answer: A) Indexes are locations of tables within a database.

Explanation: The index of a database is a data structure that improves the speed of operations, by means of a unique identifier of each row of a table, allowing rapid access to the records of a table in a database. It has an operation similar to the index of a book, keeping pairs of elements: the element to be indexed and its position in the database.

Answer:

Some major features of the optical disk memory system are that:

Answer:a.) The program is halted and the default exception handler handles the exception

Explanation: If a exception is left out by the program handler then the processing is stopped and the control of exception handling is done to another handler. The unchecked exception is thus handled by the default exception handler.

Exception occur in the executing programs that try to stop the function by terminating it .The method used for the handling of the program is try catch and throw technique. Unchecked exception are found while the run-time and thus target the processing of the program.Thus,the correct option is option(a).

Other options are incorrect because the current program cannot handle the exception as it has left it unchecked, exception cannot be ignored because it stops the program and compilation error will not be caused.

Answer:

 The balanced DFD (Data flow diagram) is the concept of the balancing all the state and incoming and also outgoing flow in the system.

The balanced data flow diagram basically ensure that the output and input data flow maintain the consistency in the DFD and are properly aligned the flow of data.

A balanced DFD does not include any type of flowchart in the control statement and also does not contain any crossing lines.

Answer:

It is how you place an input then you get an output of a graphic

Explanation:

Answer:b)The item’s classification and category set

Explanation: Mandatory access control(MAC) is the security component in the computer system. It is regarding the controlling the access of the operating system by the administrator.The accessing is made limited by the MAC according to the sensitivity of the data .

The authorization for user to access the system is based on this sensitivity level known sensitivity label. The objects contain the information regarding the classification and categories or level of items. Thus, the correct option is option(b).

Answer:  The host received an APIPA address

Explanation:

The IP address 169.254.141.45 is within the range of IP address between 169.254.0.0 and 169.254.255.255, which are reserved by the IANA (Internet Assigned Numbers Authority) for those IP addresses denoted as APIPA addresses, where APIPA stands for Automatic Private IP Address.

This means that any IP Address in this range , will be not be in conflict with routable IP addresses.

Answer:

Period of the given wave is 0.5 milliseconds.

Explanation:

We are given the frequency of the wave as 2 KHz

We know the relation between period and frequency of a wave is given by

[tex]Period=\frac{1}{frequency}[/tex]

Applying the given values we get

[tex]Period=\frac{1}{2\times 10^{3}}\\\\\therefore Period=0.5\times 10^{-3}seconds[/tex]

Thus period is 0.5 milliseconds.

Answer: True

Explanation: Security management firm is the organization that provides protection to the system, functions,data, people etc of any particular business organization.They are highly capable of the problem avoidance, management of risk and other such issues.

The monitoring of the security done by the people and devices of the security management firm are more reliable and assured due to the expert skill they persist in the security field. Thus, the given statement is true.

Answer:

The correct answer to the following question will be True.

Explanation:

Security management firm is the organization that provides security to any particular business organization's network, processes, records, people etc.They are highly capable of avoiding the problem, handling the danger and other such problems.

The security monitoring performed by the security management firm's people and equipment is more accurate and confident due to the experience they retain in the field of security. Therefore, the statement given is valid or True.

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{  

// variables

   int Counter,largest=-1,Number;

   cout<<"enter 10 non-negative numbers:";

   // read 10 non-negative Numbers

   for(Counter=1;Counter<=10;Counter++)

   {

       cin>>Number;

       if entered number is largest so far

       if(Number>largest)

       {

       // update the largest

           largest=Number;

           // print the largest

           cout<<"largest found so far is: "<<largest<<endl;

       }

   }

return 0;

}

Explanation:

Declare variables Counter,Number and largest=-1.Here Counter is use to keep  count of input number.largest to store the largest input so far.And Number  to read inout from user.Find and print largest after each input.

Output:

enter 10 non-negative numbers:24                                                                                                                              

largest found so far is: 24                                                                                                                                  

12                                                                                                                                                            

56                                                                                                                                                            

largest found so far is: 56                                                                                                                                  

9                                                                                                                                                            

8                                                                                                                                                            

67                                                                                                                                                            

largest found so far is: 67                                                                                                                                  

33                                                                                                                                                            

56                                                                                                                                                            

98                                                                                                                                                            

largest found so far is: 98                                                                                                                                  

100                                                                                                                                                          

largest found so far is: 100

Explanation:

when a form is created in Microsoft Access using the form tool it displays a single record at a time.To display multiple records and the form should be more customizable then in this case we use Multiple Items tool.

Creating a form using Multiple Items Tool:-

In navigation pane click query or table which contains the data that we want to see on the form.

On create tab,in the group Forms,click more Forms,then click Multiple Items.

Answer: implemented

Explanation:I used a bit of deductive logic. Design would be something with parameters and or boundaries like designing a home. Programmed just didn’t seem to fit in because there is no room for creative thinking. Approved? By whom?, you design something to reach a goal and follow to a degree what you designed, maybe within the walls you can add a closet or with design classes they are designed for a purpose but there must be ideas within a design that come up. So implemented makes sense so you have a design that seems to fit and certainly can be implemented meaning it can be used for a purpose to teach or help.

Answer:

 Sensitivity analysis is the method in which it basically predict the final outcome of the decision. It analysis each variable individually and identify the dependency of the output value on the particular value of the input.  

The advantage of the sensitivity analysis is that it reduce the overall risk of the particular strategy and also impact of the system.

It basically work on the basic principle that firstly changed the structure and model and then observe the particular behavior of the model.

Answer:

#here is code in Python.

#read the value n from user

n=int(input("enter the value of n:"))

#variable to store the total sum

sum_n=0

for i in range(1,n+1):

# find the sum of series

   sum_n=sum_n+1/i

#print the sum

print("sum of the series is: ",sum_n)

Explanation:

Read the value of n from user. Create and initialize a variable sum_n with 0. Run a for loop to calculate sum.Initially sum_n is 0, then for value of i=1  1/i will be added to the sum_n.Then in next iteration for i=1, 1/2 added to sum_n. Similarly loop will run util i equals to n.Then sum_n will store the sum of the

series.

Output:

enter the value of n:5

sum of the series is:  2.283333333333333

Answer: Privacy  

Explanation: Privacy is defined as information or content that is kept to the selected or desired resources and people.It is like a boundary after which the information should not be shared or disclosed because of the privates reasons such as insecurity , protection etc.It is followed for confidential and sensitive content to remain secure and cannot be misused.

Other options are incorrect because availability is referred serviceability of data, system integrity is assuring no unauthorized action in system for modification and data integrity assures about the safeness and reality of information without manipulation .Thus, the correct option is privacy.

Answer: Creating and managing

Explanation:

 A database management system (DBMS) is basically the general purpose software that helps in creating and managing  the database system. The database management system basically provide the systematic way for creating, updating and managing the data for the users.

The DBMS basically make possible to the end users to read, create, delete and also update the given data in the database system.  

A database management system (DBMS) is a software that enables the creation, storage, and manipulation of large datasets. It allows users to easily manage databases and perform complex queries to retrieve specific data.

A database management system (DBMS) is a general-purpose software that allows for the creation, storage, maintenance, manipulation, and retrieval of large datasets distributed over one or more files.

For example, Microsoft Access and Oracle are commercial software packages that provide DBMS functionality. With a DBMS, users can easily create and manage databases, perform complex queries to retrieve specific data, and ensure the security and integrity of the stored information.

Answer: Atomic operations

Explanation: Atomic operations are the process in which are related with the programs which execute in the independent manner and having no relation with other  processes or functions.

It is helpful operation in the parallel processing system.The operation assures about being carried out at rapid rate and do not face any deadlock during execution.This does not alter the rate of the system.

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) {

    // scanner object to read input from user

    Scanner s=new Scanner(System.in);

      // ask user to enter year

       System.out.print("Enter the year:");

       // read year

      int inp_year=s.nextInt();

      // check the leap year

      if(((inp_year % 4 == 0) && (inp_year % 100!= 0)) || (inp_year%400 == 0))

      {

      // print the day in the February of leap year

          System.out.println("Year "+inp_year+" has 29 days in February.");

      }

      else

      System.out.println("Year "+inp_year+" has 28 days in February.");

}

}

Explanation:

Read year from user and assign it to variable "year" with scanner object. Check the entered year is a leap year or not. A year is divisible by 100 and then check if it divisible by 400. If both condition is true then year is leap year.If year is not divisible by 100 and divisible by 4 then also it is a leap year. if year is leap then there will be 29 days in February of that year. Else there will 28 days in the February.

Output:

Enter the year:2000

Year 2000 has 29 days in February.

Enter the year:2002

Year 2002 has 28 days in February.

Final answer:

To check if a year makes February have 29 days, you must evaluate if it is divisible by 4 but not 100, unless it's also divisible by 400. A programming example demonstrates how to calculate this in Python.

Explanation:

The Gregorian Calendar is what we use today, which has 28 days in February unless it's a leap year. To determine if it's a leap year, you must check if the year is divisible by 4 but not 100, unless it's also divisible by 400. Here's a straightforward way to write a program in Python that calculates this:

year = int(input('Enter a year: '))
if year % 100 == 0:
   if year % 400 == 0:
       print('February has 29 days.')
   else:
       print('February has 28 days.')
else:
   if year % 4 == 0:
       print('February has 29 days.')
   else:
       print('February has 28 days.')

This condition checks for the criteria set forth to determine if February in the input year would have 28 or 29 days.

Answer:

// here is code in C++ to demonstrate a 2-dimensional array.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

   // variables

int r,c;

cout<<"enter the number of row:";

// read the value of row

cin>>r;

cout<<"enter the number of column:";

// read the value of column

cin>>c;

// create a 2-d array

int arr[r][c];

// read the value of array

cout<<"enter the elements of array:"<<endl;

for(int a=0;a<r;a++)

{

   for(int b=0;b<c;b++)

   {

       cin>>arr[a][b];

   }

}

cout<<"elements of the array are:"<<endl;

// print the array

for(int a=0;a<r;a++)

{

   for(int b=0;b<c;b++)

   {

       cout<<arr[a][b]<<" ";

   }

   cout<<endl;

}

return 0;

}

Explanation:

Here we have demonstrate a 2- dimensional array. In which, how to read the elements and how to print elements of array.Read the value of row and column from user.Create a 2-d array of size rxc. then read the elements of array either row wise or column wise. Then print the elements.To print the elements, we can go either row wise or column.

Output:

enter the number of row:3

enter the number of column:3

enter the elements of array:

1 2 3

9 8 7

2 4 6

elements of the array are:

1 2 3

9 8 7

2 4 6

Answer:

#here is code in python

# recursive function that counts the number of 1's

def bin_count(num):

   #base condition

   if num==0:

       return (0)

   elif num == 1:

       return (1)

   else:

       #recursive call

       return bin_count(num//2)+bin_count(num%2)

#read a number

num=int(input("enter a number:"))

#call the function

print("number of 1's is:",bin_count(num))

Explanation:

Read a number from user and call the function bin_count() with parameter num. In the function, if num=0 then it will return 0.If num is 1 then return 1 else it will count the number of 1's inn the binary representation of the number and return the count.

Output:

enter a number:63

number of 1's is: 6

Answer:

// here is program in C++.

// include header

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

  // variables

   float ini_sav;

   float i_rate;

   cout<<"Enter the initial saving:";

// read initial saving

   cin>>ini_sav;

   cout<<"Enter interest rate:";

// read interest rate

   cin>>i_rate;

// account after 4 months

   float account=ini_sav+ini_sav*i_rate*(4/float(12));

// print account

   cout<<"Account after 4 months:"<<account<<endl;

return 0;

}

Explanation:

Read initial saving from user and assign it to "ini_sav".Then read interest rate and assign to "i_rate".Then calculate the interest on initial saving after 4 months as "ini_sav*i_rate*(4/float(12))" and to initial saving.This will be the account after 4 months.

Output:

Enter the initial saving:100

Enter interest rate:.12

Account after 4 months:104

Answer: Business intelligence system is a system that is used in the field of business and organizations for generations of the strategy and plans to make decision. This system consist of the business intelligence(BI) tools. It creates a connection in the different information/data and takes them to the business organization.

Business intelligence system has goals like:-

Answer:  The function that is NOT performed at the layer 6 of the OSI model from the options presented, is the first one: Routing of the message.

Explanation:

In the OSI model, Layer 6 is called the Presentation Layer, and is basically responsible of taking the message forwarded by one Application Layer protocol (like HTTP) and formatting it a way that can be uniquely decoded at his intended destination.

This processes can include Encryption and Compression, among others.

So, Layer 6 is not responsible for routing the message (this is a function of the Layer 3, the Network Layer).

Answer:

The first output for the following code is  given below :

1

2

The second output for the following code is given below

1

2

4

5

6

7

8

9

10

Explanation:

In the first code the loop will  iterated

When j=1 the condition of if block will not be executed  so it print 1 on console and increment the value of j.

After increment of j it becomes 2 again if block does not executed  because the condition of  if block is not  true so it print 2 on console and increased the value of j.

When j=3 if condition block is executed and   it terminate the loop immediately .

Therefore output is :

1

2

In the second code the loop will iterate

When j=1 the condition of if block is not executed  so it print 1 on console and increment the value of j.

After increment the value of j it becomes  2 .Again if block will not be executed  so it print 2 on console and increased the value of j.

After increment the value of j becomes 3.This time if block will  executed  ,it will moved directly control to the beginning of the loop and  skip the current  execution of statements that means it skip the value j=3 and increment the value of j .

Now j=4 this process is same follow untill  when j<=10 when j=11 the loop is false and loop will terminate .

Therefore output is :

1

2

4

5

6

7

8

9

10

Answer:

The function is not injective.

The function is not surjective.

The function is not bijective.

Explanation:

A function f(x) is injective if, and only if, [tex]a = b[/tex] when [tex]f(a) = f(b)[/tex].

So

[tex]f(x) = x^{2} + 3[/tex]

[tex]f(a) = f(b)[/tex]

[tex]a^{2} + 3 = b^{2} + 3[/tex]

[tex]a^{2} = b^{2}[/tex]

[tex]a = \pm b[/tex]

Since we may have [tex]f(a) = f(b)[/tex] when, for example, [tex]a = -b[/tex], the function is not injective.

A function f(x) is surjective, if, and only if, for each value of y, there is a value of x such that [tex]f(x) = y[/tex].

We have that y is composed of all the real numbers.

Here we have:

[tex]f(x) = y[/tex]

[tex]y = x^{2} + 3[/tex]

[tex]x^{2} = y - 3[/tex]

[tex]x = \sqrt{y-3}[/tex]

There is only a value of x such that [tex]f(x) = y[/tex] for [tex]y \geq 3[/tex]. So the function is not surjective.

A function f(x) is bijective when it is both injective and surjective. So this function is not bijective.

Answer:

 Regressions is the statistical analysis that is basically used for the measurement in different type of the investing data and financial data.

It is basically used to determined the relationship between the depended and independent variable.

By using regression, it include various types of the technology for analyzing and modeling various types of variable. It is also used in many business to predict the various exchange rate and stock prices.

Explanation:

In C++ or C we don't have a function which tells us the size of array which is required.So it is necessary to pass the size of the arrays in the function.At the time of declaration we declare the size of the array more than we need.Then we store the elements upto the size which is necessary.So the actual size of the array is larger than the size we needed.So hence it is necessary to pass the size of the array.