Convert the following hexadecimal numbers to decimal: (a) FF (b) F0A2 (c) 0F100 (d) 100

Answer:

/* here is code in java to find greatest common

divisor with Euclidean algorithm */

import java.util.*;

// class definition

class Main

{

   // recursive method to find gcd

public static  int Euclidean(int nm1, int nm2)

   {

   // base case

if (nm1 == 0)

 return nm2;

   // recursive call

return Euclidean(nm2 % nm1, nm1);

   }

   // driver 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 first number:");

   //  read first number

       int n1=scr.nextInt();

       System.out.print("enter second number:");

       //read second number

       int n2=scr.nextInt();

       // call the method and print the gcd

       System.out.println("greatest common factor of both number is: "+Euclidean(n1,n2));

   }catch(Exception ex){

       return;}

}

}

Explanation:

Read two number from user with scanner object and assign them to variables "n1" & "n2". Call the method Euclidean() with parameter "nm1"& "nm2".According to Euclidean algorithm, if we subtract smaller number from the larger one the gcd will not change.Keep subtracting the smaller one then we find the gcd of both the numbers.So the function Euclidean() will return the gcd of both the numbers.

Output:

enter first number:12

enter second number:39

greatest common factor of both number is: 3

Answer:

Popping.

Explanation:

When remove an element from an array and the element is available for our usage is called popping.pop() is a function in function in javascript arrays.The pop() function in javascript removes the last element from the array and return the value of the popped element so it is available for usage.

Hence the answer is popping.

Answer:

string objects are cached in string pool.

Explanation:

Strings in Java are immutable or final because the string objects are cached in String Pool.As we know multiple clients share the string literals so there exists a risk of one client's action affecting all other clients.

For ex:-The value of string is "Roast" and client changed it to "ROAST" so all other clients will see ROAST instead of Roast.

Answer:

 Black-box testing is the technique which is basically use to reduce the number of the possible cases of the test and also maintain the test coverage. This type of testing is used in the functional and the non functional requirement of the system.

It is type of testing that majorly focus on the functional requirement. There are many types of black box testing that are:

Answer: Set the lifeline of each object

Explanation:

 The sequence diagram is the efficient way that use in the system requirement document for the system design.

The sequence diagram is useful in many system that shows the interaction of the logic between the each object in the system.

The first step for building the sequence diagram is that set the lifeline of the each object in the system and it allow the main specification in the run time scenarios in the graphical manner. Therefore, it enhance the performance of the system.

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

// variables

  int minn=INT_MAX;

   int maxx=INT_MIN;

   int n1,n2,n3,n4,n5;

   cout<<"enter five Numbers:";

   //read 5 Numbers

   cin>>n1>>n2>>n3>>n4>>n5;

   // find maximum

   if(n1>maxx)

    maxx=n1;

    if(n2>maxx)

    maxx=n2;

    if(n3>maxx)

    maxx=n3;

    if(n4>maxx)

    maxx=n4;

    if(n5>maxx)

    maxx=n5;

   // find minimum

   if(n1<minn)

    minn=n1;

    if(n2<minn)

    minn=n2;

    if(n3<minn)

    minn=n3;

    if(n4<minn)

    minn=n4;

    if(n5<minn)

    minn=n5;

   // print maximum and minimum

   cout<<"maximum of five numbers is: "<<maxx<<endl;

   cout<<"minimum of five numbers is: "<<minn<<endl;

return 0;

}

Explanation:

Declare two variables "minn" & "maxx" and initialize them with INT_MAX and INT_MIN respectively.Then read the five number from user and compare it with "minn" & "maxx" ,if input is greater than "maxx" then update "maxx" or if input is less than "minn" then update the "minn". After all the inputs, "minn" will have smallest and "maxx" will have largest value.

enter five Numbers:5 78 43 55 12

maximum of five numbers is: 78

minimum of five numbers is: 5

Answer:

[tex]26_{16}[/tex]

Explanation:

We can obtain the hexadecimal value using an indirected way, first we will convert it to decimal:

[tex](1*5^2+2*5^1+3*5^0)=38_{10}[/tex]

having the decimal number we have to divide that number multiple times by 16 and get a record of the quotient and reminder, until the quotient is equal to zero.

[tex]38| 16[/tex]

[tex]quotient_1=2\\remainder_1=6[/tex]

[tex]2| 16[/tex]

[tex]quotient_2=0\\remainder_2=2[/tex]

Now we will take the remainders and get the hexadecimal value and put them together. (remember, the hexadecimal number are defined from 0 to F, being A=10, B=11, C=12, D=13, E=14, F=15)

[tex]remainder_1=6\\hex_1=6[/tex]

[tex]remainder_2=2\\hex_2=2[/tex]

The hexadecimal number is 26

Answer:

By definition a foreign key of table A is a primary key of another table B, thereby establishing a link between them.

To provide referential integrity you can use these referential actions:

Answer: ECL

Explanation:

  ECL is basically stand for the emitter coupled logic and it is the high speed integrated logic circuit. In this ECL logic circuit, the transistor does not enter in the saturation mode.

In the emitter coupled logic, the output resistance are low and the input emitter impedance are high so, the state of the transistor are get changes quickly. Hence, it is fastest device as compared to all other options.

Therefore, ECL is the correct option.

Answer:

// here is code in C.

#include <stdio.h>

int main(void) {

int num;

 // loop run 100 times

for(num=1;num<=100;num++)

{

 //check divisibility by 3 and 5

    if(num%15==0)

    {

    printf("fizz buzz ");

    }

     // check divisibility by 5 only

    else if(num%5==0)

    {

        printf("buzz ");

    }

     // check divisibility by 3 only

    else if(num%3==0)

    {

        printf("fizz ");

    }

    else{

        printf("%d ",num);

    }

}

return 0;

}

Explanation:

Run a for loop from 1 to 100. Check the divisibility of number by 15, if it is divisible print "fizz buzz", if it is not then Check the divisibility by 5 only.if it returns true then print "buzz". if not then check for 3 only,if returns true, print "fizz". else print the number only.

Output:

1 2 fizz 4 buzz fizz ........buzz fizz 97 98 fizz buzz

Answer:

C) Keep the change password file on the server in case you need to change the password again

Answer: C)Integrity

Explanation: Integrity is the function that maintains the completeness and originality of information.It assures that the data is not manipulated or modified through any unauthorized access.This helps in keeping the system and data accurate.

Other options are incorrect because accountability is referred as the liability and privacy is only selected user can access the data but they can modify it.Thus, the correct option is option(c) .

Answer:

Jgthj

Explanation:

T to it t urd864rb. I5f. 8rfb 75gj

Answer: ICANN (Internet Corporation for Assigned Names and Numbers)

Explanation: ICANN (Internet Corporation for Assigned Names and Numbers) is the a US base government organization which runs on the non-profit scheme. The function of the ICANN is to maintain stability of internet operation and function,process based on consensus ,managing the domain name, naming internet components etc.

Other options are incorrect because National Center for Supercomputing Applications (NCSA) is for supporting and providing powerful computer, Web Consortium (W3C) is for development of standard of web and Internet Society (ISOC) works for internet based standard for development.

Final answer:

A simple Python program prompts the user to enter personal information such as name, address, phone number, and email, then displays it back. It's essential to handle personal data responsibly and to check privacy policies in real applications.

Explanation:

The question is asking for a simple program that collects and displays personal information. Here is an example of how such a program can be written in Python:

# Ask for personal information
name = input('Please enter your name: ')
address = input('Please enter your address: ')
phone_number = input('Please enter your phone number: ')
email = input('Please enter your email: ')

# Display the information back to the user
print('\nHere is the information you entered:')
print('Name:', name)
print('Address:', address)
print('Phone Number:', phone_number)
print('Email:', email)

This program will prompt the user to enter their name, address, phone number, and email. It will then display this information back to the user. Remember to handle personal information responsibly and refer to privacy policies when handling such data in real applications.

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

   // variable

   double height;

   // gravitational acceleration

   double g=9.8;

   cout<<"Please enter initial height:";

   cin>>height;

   // h=ut+(gt^2)/2

   // here u, initial velocity is 0

   // after simplification

   double t=sqrt(2*height/g);

   // print the time

   cout<<"time taken by ball to hit the ground is:"<<t<<" seconds"<<endl;

return 0;

}

Explanation:

Read the initial height from user. Declare and initialize the earth gravitational acceleration "g=9.8" .Then the equation is h=ut+(gt^2)/2, here u is initial velocity which is 0.Then after simplify the equation t=sqrt(2*h/g). Put the values in the  equation and find the time taken by ball to hit the ground.

Output:

Please enter initial height:100

time taken by ball to hit the ground is:4.51754 seconds

Final answer:

A Python program calculates the time a ball takes to reach the ground when dropped from a given height, illustrating basic principles of free fall in physics. For a 100 m tower, the time is approximately 4.51 seconds.

Explanation:

A student has asked to write a program that computes the time it takes for a ball to hit the ground when dropped from a tower of height h meters, assuming no air resistance. The formula to calculate the time t is derived from physics: t = √(2h/g), where g is the acceleration due to gravity, approximately 9.81 m/s². Using this formula, we candevelop a program in Python to ask the user for the height h and then compute and print the time t. To demonstrate, if the program is used with a tower height of 100 meters, the calculated time for the ball to reach the ground would be approximately 4.51 seconds.

Example Python Program

import math

def drop_time_from_height(height):
   g = 9.81  # Gravity in m/s²
   time = math.sqrt(2 * height / g)
   return time

height = float(input("Enter the height of the tower in meters: "))
time = drop_time_from_height(height)
print("The ball takes", round(time, 2), "seconds to hit the ground.")

This program illustrates a straightforward approach to solving problems related to free fall and physics calculations, enhancing the understanding of concepts such as gravity and acceleration.

Answer:

// here is code in c++.

#include <bits/stdc++.h>

using namespace std;

int main()

{

   // variables

   int hour,min,sec,tot_sec;

   string str,s="AM";

   cout<<"enter number of hours:";

   // read hour

   cin>>hour;

   cout<<"enter number of minutes:";

   // read minute

   cin>>min;

   cout<<"enter number of seconds:";

   // read seconds

   cin>>sec;

   cout<<"Enter AM or PM:";

   // read AM or PM

   cin>>str;

   if((str.compare(s) == 0 )&& hour==12)

   {

       hour=0;

   }

   // calculate total seconds

   tot_sec=hour*3600+min*60+sec;

   // print the output

   cout<<"total seconds since midnight is : "<<tot_sec<<endl;

return 0;

}

Explanation:

Read the value of hour, minute, second and string "AM" or "PM" from user.

Then if string is equal to "AM" then make hour=0.Then multiply hour with

3600, minute with 60 and add them with second.It will give the total seconds

from midnight.

Output:

enter number of hours:12                                                                                                                                                

enter number of minutes:46                                                                                                                                              

enter number of seconds:23                                                                                                                                              

Enter AM or PM:AM                                                                                                                                            

total seconds since midnight is: 2783

Final answer:

The program provided takes user input for hour, minute, second, and period (AM/PM) and calculates the total number of seconds since midnight. Special attention is given to the hour input to correctly adjust for 12-hour time format nuances, ensuring accurate conversion and calculation.

Explanation:

Calculating the number of seconds since midnight involves several steps of time conversion and careful consideration of whether the time is AM or PM, especially in the instance of 12 o'clock. Below is a simple program in Python which prompts the user for the required information and calculates the number of seconds since midnight:

Python Program:
def calculate_seconds(hour, minute, second, period):
   if hour == 12:
       hour = 0
   if period.lower() == 'pm':
       hour += 12
   total_seconds = (hour * 3600) + (minute * 60) + second
   return total_seconds
# User input
hour = int(input('Enter the hour: '))
minute = int(input('Enter the minutes: '))
second = int(input('Enter the seconds: '))
period = input('Enter AM or PM: ')
# Calculation
total_seconds_since_midnight = calculate_seconds(hour, minute, second, period)
print(f'It has been {total_seconds_since_midnight} seconds since midnight.')
This program will correctly convert the given time to the total seconds since midnight using the entered hour, minute, and second values, along with the period of the day.

Answer:

Operation the correct answer for the given question.

Explanation:

An operation is a template that is used as a template parameter .An operation defined the services and behaviors of the class .The operation is directly invoked on instance .

Attribute define the property of an entity it is not defined the services and behaviors of the class. so this option is incorrect.

Class is the class of variable of method it is not defined the services and behaviors of the class  so this option is incorrect.

Object are the rub time entity .object are used access the property of a class it is not defined the services and behaviors of the class  so this option is incorrect.

Abstract class is the class which have not full implementation of all the method .it is not defined the services and behaviors of the class  so this option is incorrect.

So the correct answer is operation.

The answer to the question is the 'operation' of a class, where the behaviors or services are defined. Operations, also known as methods, are what allow objects of a class to perform actions and interact with other parts of a program. They are distinguished from attributes, which define a class's properties.

A operation of a class is where the services or behaviors of the class are defined. In object-oriented programming, a class is a blueprint for creating objects (a particular data structure), providing initial values for state (member variables or attributes), and implementations of behavior (member functions or methods, in other words, operations). The operations are essential to the functionality of a class as they enable the objects of that class to perform tasks and respond to messages.

Operations, which can also be referred to as methods or functions, define what actions can be performed on the data within an object. While attributes determine the properties and characteristics of a class instance, it is the operations that define how an instance of a class can interact with other parts of the program.

Consider a simple example of a class 'Car'. The attributes of the 'Car' class might include 'color', 'brand', and 'horsepower', but the operations might include 'startEngine()', 'stopEngine()', and 'accelerate()'. These operations are the behaviors that the 'Car' objects can exhibit.

Answer: Only A and C

Explanation: Default constructor is a constructor that has parameters with the values that are default or has no arguments/parameter present. Default constructor is not declared in the class rather it gets generated by itself when not defined.

Class is defined with data members, functions, objects etc are considered as per the requirement given by the user .It is the user defined concept.

Statement (B) is incorrect because static method is used for accessing the static members of the particular class and manipulate the value of it.

Thus, only statement (A) and (C) are correct.

Answer:

Exception is thrown and the file is created with 0 length.

Explanation:

While opening a file there is an error occur which shows the file does not exist that means an  exception is thrown.

And this error can be occur when the size of the file is very very low means the file is a size of 0 length. So to avoid this error we have to exceed its length from the zero length.

Answer: Video surveillance is the digital system used in the organization for the capturing of the video and storing it for monitoring .It is used for the security purpose of the business. The pros and cons of this system is mentioned as follows:-

Pros:

Cons:

Final answer:

Pros of employers using video surveillance include increased security and monitoring productivity. Cons include invasion of privacy and the potential for misuse by employers.

Explanation:

Pros:

Cons:

Answer: Character reference is the tool usually followed in the business world.It is defined as the recommendation that is provided by organization employee that has a relation with the candidate(individual) outside of the work. This also known as the personal reference. The candidate can be friend family or any other known person whose reference is being given.

This is used in the business field for revealing about the personality and character of the candidate apart from the skills and working abilities. It also helps in the hiring of the candidate easily when the description is good in the character reference.

Answer:

C++

Explanation:

C ++ is an object-oriented programming language that takes the basis of the C language.

C ++ is a programming language designed in the mid-80s by Bjarne Stroustrup. The intention of its creation was to extend to the successful programming language C with mechanisms that allowed the manipulation of objects. In that sense, from the point of view of object-oriented languages, C ++ is a hybrid language. Subsequently, generic programming facilities were added, which added to the other two paradigms that were already admitted (structured programming and object-oriented programming). This is why it is often said that C ++ is a multiparadigma programming language.

At present, C ++ is a versatile, powerful and general language. His success among professional programmers has led him to occupy the first position as an application development tool. The C ++ maintains the advantages of the C in terms of operator wealth and expressions, flexibility, conciseness and efficiency. In addition, it has eliminated some of the difficulties and limitations of the original C.

Answer:

PERL

Explanation:

PERL (Practical Extraction and Report Language) :This is an Open Source software, that is licensed under its Artistic License, or the GNU General Public License (GPL).

Perl is a popular programming language that carries out a lot of functions and applicable in many applications, it was initially developed for just manipulation of text but is currently being used for a whole lot more, it used for a multiple tasks like web development and network programming.

Answer: False, the "A" in the CIA triad stands for availability.

The CIA triad also know as the Confidentiality, integrity and availability triad, is known as a model which is designed in order to implement and enforce policies in regards to information security. This model is also referred as the availability, integrity and confidentiality model i.e AIC triad. This is done in order to avoid confusion with Central Intelligence Agency i.e. CIA.

Answer: Router's prefix

Explanation: DHCPv6 (Dynamic host configuration protocol version 6) is the protocol used for an IPv6(Internet protocol version 6) network's host,prefixes,address and other such configurations.The prefix is used for sending the messages of DHCPv6 in the default situation.

In default situation the prefix acts as the cluster of the IP address and thus sends the the message to the destination using the address. Other options are incorrect because anycast address, local link and  FF02::0A does not transmit the message in the default situation.Thus the correct option is router's prefix.

Answer: True

Explanation:

Functional policies are referred to as a system or units of standardized procedures, processes and guidelines for employees which tends to state how exactly an employee has to provide services and commodities. The stages to go undergo this are usually formalized in organizations guide which usually will describe the respective processes.  It also lies as the ground of franchising and thus tend to guarantee both the adherence to the process and the accomplishment of standards set .

Answer:

Always available to run: You can run the tests 24/7, when you are at work, when you leave the office or if you working remote, you can run the test. They can be run virtually unattended, leaving the results to be monitored towards the end of the process.

Fewer human resources: You can reduce the people advocated on testing, you would need a QA automation to write your scripts to automate your tests, instead of people doing manual tests. In addition, once automated, the test library execution is faster and runs longer than manual testing.

Reusability and reliability: The scripts are reusable, a script could be used hundreds of times before need changes. It allows you to test exactly the same, without forgetting any steps this is why is more reliable and way quicker than manual test where people may cause.  

Answer:

// here is code in java.

// import package

import java.util.*;

// class definition

class Main

{

   // main method of the class

public static void main (String[] args) throws java.lang.Exception

{

   try{

      // print the name

       System.out.print("my name is Sam. ");

       // print the major

       System.out.print("my major is CS.");

   }catch(Exception ex){

       return;}

}

}

Explanation:

In java, System.out.print() will print the statement but didn't go to the next line.If there is another System.out.print(), then it will also print into the same line.So here first the System.out.print() will print the name and second will print the major in the same line.

Output:

my name is Sam. my major is CS.

Answer: There are several features that should be considered before buying personal computer(PC).Some of the main factors are:-

Answer:

6898

Explanation:

Given that 1AF2 is a hexadecimal number.

We have in hexadecimal, the digits are 0,1,2,3...9, A,B,C,D,E,F for the 16 digits used.

Using the above we say in the given number, we have

2 in units column

F in 16 column

A in 16 square column

and 1 in 16 cube column

Place value[tex]= 2(1) +15(16)+10(16^2)+1(16^3)\\= 2+240+2560+4096\\=6898[/tex]

Hence 1AF2 = 6898 in decimal