Placeholders are used to defend against what kind of hacking attack?

a

SQL Injection

b

Key stroke logging

c

Phishing

d

Denial of Service

Answer: 32 bits

Explanation:

 The subnet mask basically contain 32 bits number which performed various function in terms of mask in the IP address. There are mainly two types IP address that are:

The 32 bit is the mask that is used for the host networking address in the single IP address. If the string represent 1, it means that the subnet mask is the part of the network.  

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.

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.

Answer:

string words[6];

words[0]="humming";

words[1]=words[0];

Explanation:

The above statement declares an array of size 6 which can store elements of type string or word. Then I have initialized the first and second elements with the word humming and the rest of the places in the arrays are uninitialized.

You have to include the header file string so that this array could work otherwise it will not.

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

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.

Answer with Explanation:

Part 1)

The given sine wave is as

[tex]y=3sin(2\pi t+\pi)[/tex]

The graphical representation of the wave is shown in the attached figure:

Part 2)

For a general wave equation [tex]y(t)=Asin(\omega t+\phi )[/tex]

'A' is defined as amplitude of the wave

[tex](\omega t+\phi )[/tex] is defined as phase of the wave

Upon comparing with the given wave function we observe

1) Amplitude of the given wave is 3

2) Phase of the given wave [tex](2\pi t+\phi )[/tex]

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.

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

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  

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,

Answer: Compiler

Explanation:

 The exception classes are basically occur during the compilation of the program in the system. The exception is the event which disrupt the flow of the instruction.

It basically provide a way to transfer the control in the one part of the program to another program. The exception class is also known as run-time exception that basically indicate the condition in the class application.

All the other options are not in the form of packages in the exception class. Therefore, compiler is the correct option.

Answer:

 The term tokenizing is the process of splitting the data or some text into the minimal useful or meaningful units.

The tokenzing break the sequence of the string into various keywords, words and meaningful phrases. This process of breaking different elements is also known as token.

Token is the individual sentence and word in the tokenizing process and some of the characters are marked as discarded in this process such as punctuation.  

Answer:

b.A trusted third-party authentication protocol .

Explanation:

Kerberos is an authentication service protocol between the trusted hosts present on an untrusted network for example internet. Kerberos is built in all of the major OS's(Operating Systems) such as Microsoft windows ,Apple OS X,Linux .

Microsoft windows 2000 incorporated Kerberos protocol the default authentication method.

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

Answer:

False.

Explanation:

Integers can be both negative number and positive numbers.There is no need to declare negative integers as floating point numbers since they can accept negative numbers.The minimum possible value of int is INT_MIN and this value is negative.

So hence we can say that the answer to this question is false.

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.

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 :

Examples of Big Data :

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.

Answer:

The three recent advances are:

1. Cloud Technology

2. Asynchronous Transfer Mode

3. GUI technology

Explanation:

1. Cloud Technology:

Withe the advent of this technology it has become more convenient to store and access the programs and data over the internet.

The increase in the use of this technology has influenced the Operating system to be designed in a more distributed manner.

2. Asynchronous Transfer Mode:

This mode allows the data transfer by using the methodology of flow control for the transfer of start and stop data bits.

The increased use of ATM for the transfer of data bit stream between components to obtain greater through put  has also influenced the design of the Operating System.

3. Graphic User Interface (GUI technology):

With the help of indicators (visual) and graphical icons, this technology allows the interaction with electronic devices.

The progress in this technology and the interfaces it provided the users with has been through many changes thus influencing the operating system  

to improvise their design thus enabling the smooth User Interface experience.

Answer:

Every time you present your results to a person in a managerial position or who does not have expertise in the technical details and processes you followed to get your results

Explanation:

When it comes to software projects documentation, you generally have to build a report that will be read by different people. These people come from different backgrounds and know the project to a different extent. For this reason, the project should contain sections that facilitate the understanding of the reader.

In general, the first section of a project report is an executive summary. The executive summary is a concise description of the project, starting from the problem context and description, including the results, conclusions, and recommendations.

It should be no more that one page long and it should be written in a general language so whoever reads it understands what is your project about.

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

Answer:

int x=10;

int *p=&x;

4)

class Student

{

public:

string name;

private:

int age;

public:

int accessor()   //accessor

{

   return age;

}

void mutator(int value)   //mutator function.

{

   age=value;

   return;

}

}

Explanation:

The above written statement creates a pointer of name p.Then the address of variable x is stored in the pointer p and it is done by using the & referencing operator.By doing this the address of the variable x is stored in pointer p.

In the next question two public functions are created with the names accessor and mutator respectively.Accessor function are used to access private values in the class and the Mutators are used to set the prviate values.That is what the accessor and mutator function is doing in the class.

Answer:

Get much money

Explanation:

Beause the people need money

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:

  *

 ***

*****

*******

*****

 ***

  *

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.

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.

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.

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.

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.