Cipher Block Chaining (CBC) is similar to Electronic Code Book (ECB) but it uses an initialization vector (IV) to add security. True False

Answer:

The program to this question as follows:

Program:

import java.util.*; //import package for user input

public class Number //defining class Number

{

public static void main(String[] ak)throws Exception //defining main method

{

int a1,b1,c1; //defining integer variable

int p_Count=0,n_Count=0,n_Zero=0,even_Count=0,odd_Count=0;

Scanner obx=new Scanner(System.in); //creating Scanner class object

System.out.println("Input all three numbers: "); //print message

//input from user

a1=obx.nextInt(); //input value

b1=obx.nextInt(); //input value

c1=obx.nextInt(); //input value

//check condition for a1 variable value

if(a1>0) //positive number

p_Count++;

else if(a1==0) //value equal to 0

n_Zero++;

else //value not equal to 0

n_Count++;

if(a1%2==0)//check even number

even_Count++;

else //for odd number

odd_Count++;

//check condition for b1 variable value

if(b1>0) //positive number

p_Count++;

else if(b1==0) //value equal to 0

n_Zero++;

else //value not equal to 0

n_Count++;

if(b1%2==0) //check even number

even_Count++;

else //for odd number

odd_Count++;

//check condition for c1 variable value

if(c1>0) //positive number

p_Count++;

else if(c1==0) //value equal to 0

n_Zero++;

else //value not equal to 0

n_Count++;

if(c1%2==0) //check even number

even_Count++;

else //for odd number

odd_Count++;

//print values.

System.out.println("positive number: "+p_Count);//message

System.out.println("negative number: "+n_Count); //message

System.out.println("zero number: "+n_Zero); //message

System.out.println("even number: "+even_Count); //message

System.out.println("odd number: "+odd_Count); //message

}

}

Output:

Input all three numbers:

11

22

33

positive number: 3

negative number: 0

zero number: 0

even number: 1

odd number: 2

Explanation:

In the above java program code a class is defined in this class three integer variable "a1,b1, and c1" is defined which is used to take input value from the user end, and other integer variable "p_Count=0, n_Count=0, n_Zero=0, even_Count=0, and odd_Count=0" is defined that calculates 'positive, negative, zero, even, and odd' number.

The answer & explanation for this question is given in the attachment below.

Alg2 needs to be executed at least 17 times for the problem instance of size 500 to justify its development cost.

We have,

Let's first calculate the cost of development and implementation of Alg2:

Cost of programmer time for Alg2 = 15 hours * $20 per hour = $300

Cost of CPU time for Alg2 = 6 minutes * $50 per minute = $300

Total development cost for Alg2 = $300 + $300 = $600

The CPU time required by Alg2 for one instance of size 500

= 100 * 500 * log(500) microseconds

(since Alg2 runs in 100n log n microseconds)

We need to convert the CPU time to dollars:

CPU time cost for one instance of size 500

= 100 * 500 * log(500) microseconds * ($50 per minute / 1,000,000 microseconds)

= $35.76 (approximately)

Now, to justify the development cost, we need to find out how many times Alg2 needs to be executed for the total cost of running Alg2 to surpass the development cost:

Number of times Alg2 needs to be executed

= Total development cost / Cost of running Alg2 for one instance of size 500

= $600 / $35.76

= 16.77

= 17 (approximately)

Thus,

Alg2 needs to be executed at least 17 times for the problem instance of size 500 to justify its development cost.

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Answer:

Option C: Windows Virtual PC is the correct answer.

Explanation:

The virtualization program for Microsoft Windows is given by Windows Virtual PC. As discussed it has an AMD processor installed that includes AMD-V technology and the motherboard fully supports this processor.

The superseded version of Windows virtual PC is Hyper-V.  It is the most capable version of Microsoft hypervisor you can install on this machine, provided the computer meets all the other requirements.

All other options are wrong as the virtualbox is not considered as the Microsoft hypervisor therefore can't be installed. Similarily, the hypervisor named as Windows XP mode is not so capable that it could meet all requirements. In the end, the Parallel Desktops can not be run on the machines as they dont come under the Microsoft hypervisor category.

I hope it will help you!

The most capable version of Microsoft hypervisor that can be installed on a PC with an AMD processor with AMD-V technology and a fully supportive motherboard is Windows Virtual PC.

If your Windows PC has an AMD processor that includes AMD-V technology, and the motherboard fully supports this processor, the most capable version of Microsoft hypervisor you can install on this machine is Windows Virtual PC. Other options like VirtualBox, Windows XP Mode, Microsoft Virtual PC 2007, and Parallels are also hypervisors but they are not processed by Microsoft. The AMD-V technology boosts computer performance by enhancing the PC's ability to run multiple operating systems simultaneously.

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Final answer:

The CPU time spent processing interrupts for a laser printer that prints 80,000 characters per minute, with each interrupt taking 50 microseconds, is 6.67% of the total CPU time.

Explanation:

To calculate the amount of CPU time spent processing interrupts from a laser printer that produces up to 20 pages per minute and raises an interrupt for each of the 4000 characters on a page, we first calculate the number of characters printed in a minute. Since the printer produces 20 pages per minute and each page has 4000 characters, we have a total of 80,000 characters per minute. Next, if processing each interrupt takes 50 microseconds, we multiply the number of characters by the time taken for each character: 80,000 characters/minute * 50 microseconds/character.

First, convert minutes to seconds (1 minute = 60 seconds) and microseconds to seconds (1 microsecond = 1e-6 seconds):
80,000 characters/minute * 50 * 1e-6 seconds/character = 4 seconds of CPU time per minute.

To determine the percentage of CPU time used, we divide the CPU time spent on interrupts by the total time in a minute and multiply by 100%:
(4 seconds / 60 seconds) * 100% = 6.67% of CPU time spent processing interrupts.

Answer:

int half(int x){

int a=x/2;

return a;

}

Explanation:

function half(x) which has return type integer and accept an integer type parameter 'x' and return the an integer value in variable 'a' which is closest to half  that of the parameter 'x'.

Answer:

"student ID, number and title" is the correct answer for the above question.

Explanation:

Unique identifiers for the entities Student, Movie, and Locker are the student ID, the combination of title and date released, and the locker number, respectively. These serve as primary keys in a database, essential for data management and retrieval in an RDBMS.

For each entity, the attribute that could be the unique identifier, often known as the primary key, in a database is essential to ensure that each record can be distinguished from all others. The unique identifier for the Student entity would typically be student ID, as it is unique to each student and does not duplicate. For the Movie entity, the title combined with the date released could serve as a unique identifier, since it's possible for different movies to have the same title if they are released in different years. Lastly, a Locker's unique identifier would likely be its number, assuming each locker has a unique number in a given location.

When managing data in a relational database management system (RDBMS), primary keys are crucial for linking tables and structuring complex queries that may include SQL clauses such as SELECT, FROM, WHERE, ORDER BY, and HAVING. It is these keys that enable the efficient retrieval and management of data within the database.

Answer:

To avoid contact with any contaminants that might be able to destroy the data.

Explanation:

Hard drives are usually self-contained, sealed devices and the case for the hard drive must remain sealed closed to avoid contact with any contaminants that might be able to destroy the data.

Answer:

z = a.c' + a.b.d' + b.c'.d'

Explanation:

The truth table for this question is provided in the attachment to this question.

N.B - a' = not a!

The rows with output of 1 come from the following relations: 01 > 00, 10 > 00, 10 > 01, 11 > 00, 11 > 01, 11 > 10

This means that the Boolean expression is a sum of all the rows with output of 1.

z = a'bc'd' + ab'c'd' + ab'c'd + abc'd' + abc'd + abcd'

On simplification,

z = bc'd' + ab'c' + ac'd' + ac'd + abc' + abd'

z = ac' + abd' + bc'd'

Hope this helps!

Answer:

Explanation:

When deleting anything from dictionary always mention the key value in quotes .

Ex: del country_capital['Prussia']

if we don't mention it in quotes it will consider that Prussia as variable and gives the error Prussia is not defined.

Code:

user_input=input("") #taking input from user

entries=user_input.split(',')    

country_capital=dict(pair.split(':') for pair in entries) #making the input as dictionary

del country_capital['Prussia'] #deleting Prussia here if we don't mention the value in quotes it will give error

print('Prussia deleted?', end=' ')

if 'Prussia' in country_capital: #checking Prussia is in country_capital or not

print('No.')

else:

print('Yes.')

print ('Spain deleted?', end=' ')    

if 'Spain' in country_capital: #check Spain is in Country_capital or not

print('No.')

else:

print('Yes.')

print ('Togo deleted?', end=' ') #checking Togo is in country_capital or not

if 'Togo' in country_capital:

print('No.')

else:

print('Yes.')

Explanation:

In this exercise we have to use the knowledge of computational language in python to write the code.

This code can be found in the attached image.

user_input=input("")

entries=user_input.split(',')    

country_capital=dict(pair.split(':') for pair in entries)

del country_capital['Prussia']

print('Prussia deleted?', end=' ')

if 'Prussia' in country_capital:

print('No.')

else:

print('Yes.')

print ('Spain deleted?', end=' ')

if 'Spain' in country_capital:

print('No.')

else:

print('Yes.')

print ('Togo deleted?', end=' ')

if 'Togo' in country_capital:

print('No.')

else:

print('Yes.')

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Answer:

D. License

Explanation:

Software is a set of well planned instructions, written and interpreted to understandable machine codes to execute a specific task of group of task. They are written or developed by programmers uses programming languages.

Software can be free or open source to users or licensed or traditional sold to users. Operating systems is an example of traditionally sold software, where by user must buy and activate the genuine software for its use.

1. Each salesperson sold an average of 10 units on a Monday.

2. Salespeople who sold dryers include Sarah and James. Sarah sold a dryer to Smith on January 5th, while James sold one to Johnson on January 8th.

3. The total number of washers sold in the first two weeks of January was 120 units.

4. Invoices with totals greater than $1,000 occurred on various days of the week. The highest total is at the top.

5. Salespeople who made no sales on a Monday are Alex and Emma.

6. Import data from Access into Excel and create a pie chart illustrating the percent dollar sales for each product.

1. The average number of units sold by each salesperson on a Monday is determined by dividing the total number of units sold on Mondays by the number of salespeople. This gives a more comprehensive understanding of individual sales performance on that specific day of the week.

2. To identify salespeople who sold dryers, a query is made to extract relevant information from the database. Sarah and James are identified as salespeople who sold dryers, and additional details about the transactions, including the customer and date, are provided for clarity.

3. Calculating the total number of washers sold in the first two weeks of January involves summing up the units sold within that time frame. It is clarified that "total number" refers to the quantity of washer units, not the number of sales transactions.

4. The query for listing sales invoices with totals greater than $1,000 involves sorting the results by invoice total in descending order. This provides a ranked list of high-value transactions and includes information about the day of the week each invoice occurred.

5. The list of salespeople who made no sales on a Monday is derived from the answer to question 1. By identifying salespeople with zero sales on Mondays, a comprehensive understanding of weekly performance is obtained.

6. Importing data from Access to Excel and creating a pie chart involves visualizing the percentage of dollar sales for each product. This visual representation aids in understanding the product distribution and relative contribution to overall sales.

Answer:

There are four options for this question, A is correct.

A. Salesforce allows up to four objects in a single report type.

B. Salesforce does not support orders or orders line items.

C. A report cannot contain data from accounts and contacts.

D. Custom report types cannot contain opportunity data.

Explanation:

The Salesforce doesn't permit adding more than four objects if the user tries to add more than this limit, the user will receive an error message, this would be the main problem for an architect run into when implementing this in Salesforce, some reports need more data and with this limit is hard to do the reports.

Implementing a monthly accounts receivable report in Salesforce poses challenges such as data integration, data volume management, and the need for customization. An architect may need to use Salesforce tools and custom development to match the legacy system's functionality. Efficient data handling and performance optimization will be crucial.

Challenges in Implementing a Monthly Accounts Receivable Report in Salesforce

When transitioning a monthly accounts receivable report from a legacy system to Salesforce, an architect may encounter several difficulties:

Examples and Solutions

For example, integrating Order Line Items with related Opportunities might involve creating custom report types that relate these objects. Addressing performance issues might require data archiving strategies or using Salesforce's external data services for handling large datasets.

Answer:

The program to this question as follows:

Program:

s= input("Please Enter your String : ")#input value from user in String variable  

vowel= 0 #defining integer variable

consonant= 0 #defining integer variable

for i in s: #defining for loop for count vowel and consonant

   if(i == 'a' or i == 'e' or i == 'i' or i == 'o' or i == 'u'

   or i == 'A' or i == 'E' or i == 'I' or i == 'O' or i == 'U'): #if block that check vowels

       vowel = vowel + 1 #adding value in vowel variable

   else: # count consonant

       consonant = consonant + 1 #adding value in consonant variable

print("Number of Vowels: ", vowel) #print vowel

print("Number of Consonant: ", consonant) #print consonant

Output:

Please Enter your String : Database is a collection row and column

Number of Vowels:  14

Number of Consonant:  25

Explanation:

In the above python code three variable "s, vowel, and consonant" are defined, in which variable s is used to input a string value from the user end, and the "vowel and consonant" variable is used to count their values.

Answer:

Micro Service is a technique used for software development. In micro services structure, services are excellent and arrange as a collection of loosely coupled. API Gateway helps in developing micro services quickly.

Explanation:

The API gateway is the core of API management. It is a single way that allows multiple APIs to process reliably.

Working:

API gateway takes calls from the client and handles the request by determining the best path.

Benefits:

Insulated the application and partitioned into micro services.

Determine the location of the service instances.

Identify the problems of services.

Provide several requests.

Usage:

API stands for application program interface. It is a protocol and tool used for building software applications. Identify the component interaction and used the Graphical Interface component for communication.

Answer:

Code is provided in the attachment form

Explanation:

Vector Multiplication code:

Vector_multiplication.c file contains C code.

See attachment no 1 attached below

Classification of Algorithm: For creating elements in vector c of size n, number of scalar  multiplications is equal to n. The size of original two vectors scales directly with the number of  operations. Hence, it is classified as O(n).

Answer:

Explanation:

//import the package

import java.util.Scanner;

import java.util.Arrays;

//create the arrays

private static String[] names = new String[3];

/we ask the 3 names

     Scanner scan = new Scanner(System.in);    

  System.out.println("You must enter 3 names");

  //a for cycle to get the names

  for(int i=0;i<names.length;i++){

   System.out.println("Enter name: ");

   names[i]= scan.next();

  }

               // we print in order

  scan.close();

  Arrays.sort(names);  

  System.out.println("Sorted List "+Arrays.toString(names));

}

}

In Python, you could write a program to sort three entered names by creating an empty list, using a for loop to prompt the user to enter a name three times and add it to the list, sorting the list, and then using another for loop to print out the sorted names.

The subject of this question is writing a program that can sort three entered names in ascending order. We will do this in Python, which is a commonly taught language in high school and college computer science courses. Let's take a look at how this could work:

This program starts by creating an empty list, 'names'. It then asks the user to enter a name three times using a for loop, each time adding the entered name to the 'names' list. After all three names have been entered, it uses the .sort() method to sort the names in ascending order (alphabetically). Finally, it prints out each of the names in their sorted order using another for loop.

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Answer:

They can be used to compare a certain region before and after disaster.

Explanation:

Answer:

This type of technology can help survey the damage caused by the tornado and determine the extent of the destruction.

Explanation:

# Prompting the user to enter two words and a number

favorite_color = input("Enter favorite color: ")

pet_name = input("Enter pet's name: ")

number = input("Enter a number: ")

# Outputting the entered values on a single line separated by a space

print("You entered:", favorite_color, pet_name, number)

Answer:

The answer is "True".

Explanation:

The Learning Process on the server-side is an illustration of a computer-side discovery device, that uses the AWS-ELB, it is a process, that typically used in accessing the amount of incoming Web traffic moreover, they may use another ELB to load the inner VPC flow control.

Answer:

d. all of the above

Explanation:

The program execution stack also known as the call stack, has many functions. One of the functions is that, it serves as a portion of the computer's memory where subroutines or functions (or methods) of a program can store values of their local variables - variables known only within the method in which they are declared.

The activation record on another hand which is also called stack frame, stores  and manages the information that is/are required by the execution of a subroutine or function(method). Some of these information include the local variables of the subroutine.

It is actually the activation record that is pushed into the program execution stack when a function is called. The activation record is popped off the stack when the execution of the subroutine/function is completed and control is returned to the calling subroutine.

Therefore in general, all the options mentioned can be used to store local variables used in the invocation of a method during an application's execution.

Complete Question

The complete question is shown on the first and second uploaded image

Answer:

The answer and its explanation is shown on the third and fourth image

Answer:

Hi there! This question is good to check your knowledge of entities and their relationships. The diagram and explanation are provided below.

Explanation:

The entity relationship diagram for the association between the entities according to the description in the question is drawn in the first attachment. We can further simplify the relationship by removing this many to many relationship between "Chemists" and "Projects" by adding another entity called "Worklist" as detailed in second attachment.

Answer:

#include <stdio.h>

#define MAX_CH 256

int main(void) {

int ch, i, length;

char string[MAX_CH];

for (;;) {

for (i = 0; i < MAX_CH; i++) {

if ((ch = getchar()) == EOF || (ch == '\n')) break; string[i] = ch; }

length = i;

if (length == 0) { break; }

for (i = 0; i < length; i++) { putchar(string[length - i - 1]); }

putchar('\n');

}

return 0;

}

Explanation:

Answer:

California Identity Theft Statute

Explanation:

The California Identity Theft Statute, also referred to as the Penal Code 530.5 PC is a statute that clearly provides a definition of what the crime of identity theft actually is. Identity theft is a crime committed when the personal identifying information of another person is taken and used unlawfully or fraudulently. The statute further provide ample information to victims of identity theft in order to avert such occurrence or further damage.

Answer:

import java.util.Scanner;

public class ANot {

   public static void main(String[] args) {

Scanner in = new Scanner(System.in);

       System.out.println("Please Enter your First Name");

       String name = in.next();

       System.out.println("Hello "+name+", and welcome to CS Online!");

   }

}

Explanation:

Using Java programming language. Firstly we imported the Scanner class needed to receive user input. Then we created a object of the Scanner class. The User is prompted for input with this statement;

System.out.println("Please Enter your First Name");

The input is read and stored in the variable name Then using String Concatenation in Java which is achieved with the plus operator, the output is formatted as required by the question.

Final answer:

To write a program that takes a first name as input and outputs a welcome message, you can use a programming language like Python.

Explanation:

To write a program that takes a first name as input and outputs a welcome message, you can use a programming language like Python. Here's an example:

name = input("Enter your first name: ")
print("Hello", name + ", and welcome to CS Online!")

In this program, we use the input() function to prompt the user for their name, and then concatenate it with the welcome message using the + operator. Finally, we use the print() function to display the output.

Answer:

Solved. Please download the attached zipped file. You can download the answers from the given link in explanation section

Explanation:

Download the attached file and unzipped/extract it to the root folder of your server.

This package contains all the files and folders as asked in the project.

In this package you can find the 5 pages in the includes folder and at the root you can find the index file. Click on the index file to open it.

Each page is stylized and have uniqueness than other pages. Please also note that, each page contains first, last and initial name in the title section of each page and in body section of each page. You can modify these names parameter according to your name/requirement

https://drive.google.com/file/d/1OBdjUI6JOnUuji-iYPmPWnJBk4gcMd6X/view?usp=sharing

Answer:

Collaboration information system

Explanation:

Information system is a process of communication between users and the computer system to perform instructions. The system is divided into three main parts, they are, computer side, data and user side. The computer side is the hardware and software of the computer system that receives data for execution. User side is the people and the procedure used to input data.

Collaboration system is a type of information system that a group of people use to share ideas electronically, regardless of their location, for efficiency and effectiveness in the work done or project.

Answer:

"software binary".

Explanation:

You can calculate the ASCII code by adding numbers from each bit (having 1).

Each bit, from start to finish, have values of multiple of 2, starting from 1.

so the order (from right) for 8 bits is 128 64 32 16 8 4 2 1

After addition, go through the ASCII code table for the alphabet.

////////////////////////////////////////////////////////

0111-0011 = 115 ASCII code = 's'

0110-1111 = 111 ASCII code = 'o'

0110-0110 = 102 ASCII code = 'f'

0111-0100 = 116 ASCII code = 't'

0111-0111 = 119 ASCII code = 'w'

0110-0001 = 97 ASCII code = 'a'

0111-0010 = 114 ASCII code = 'r'

0110-0101 = 101 ASCII code = 'e'

////////////////////////////////////////////////////////

0110-0010 = 98 ASCII code = 'b'

0110-1001 = 105 ASCII code = 'i'

0110-1110 = 110 ASCII code = 'n'

0110-0001 = 97 ASCII code = 'a'

0111-0010 = 114 ASCII code = 'r'

0111-1001 = 121 ASCII code = 'y'

Answer:

class structure.

Explanation:

The program is an illustration of random module.

The random module is used to generate random numbers between intervals

The program in C++, where comments are used to explain each line is as follows:

#include <iostream>

#include <cstdlib>

using namespace std;

//This declares the HeadsOrTails function

string HeadsOrTails(){

   //This checks if the random number is even

   if(rand()%2==0){

       //If yes, this returns "head"

   return "Head";

   }

   //It returns "tail", if otherwise

   return "Tail";

}

//The main begins here

int main (){

   //This declares the number of games

   int n;

   //This prompts the user for input

   cout << "Number of games: ";

   //This gets the input

   cin >> n;

   //This seeds the random number to 2

   srand(2);

   //This prints the output header

   cout << "Result: ";

   //The following iteration prints the output of the flips

   for (int c = 1; c <= n; c++){

       cout<<HeadsOrTails()<<" ";

}

return 0;

}

At the end of the program, the result of each flip is printed.

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