Let A and B be two sets of n positive integers. You get to reorder each set however you like. After reording, let ai be the i-th element of A and bi be the i-th element of B. The goal is to maximize the function n Π (i=1) ai^bi . You will develop a greedy algorithm for this task.

Required:
a. Describe a greedy idea on how to solve this problem, and shortly argue why you think it is correct (not a formal proof).
b. Describe your greedy algorithm in pseudocode. What is its runtime?

Answer:

True

Explanation:

With the recent advancement in IT we have witnessed offline retail businesses begin to get online presence. The advancement of the e-commerce sector and the convenience that it brings to customers through providing the ability to make orders online and get goods delivered to their doorsteps in a short time, has brought about escalating growth in the online and in extension offline retail businesses.

Big retail chains such as Walmart are taking advantage of this to increase their sales. Also, online retail presence helps put offline businesses out there in terms of advertising and marketing.

Answer:

A good design brief often begins with some information about the client and what their brand stands for. Including this helps to connect an individual project with the bigger picture. Aim to capture key points about what the company does, how big they are, and what their key products or services are.

Explanation:

A good design brief often begins with some information about the client and what their brand stands for. Including this helps to connect an individual project with the bigger picture. Aim to capture key points about what the company does, how big they are, and what their key products or services are.

Answer:

The answer is "option B"

Explanation:

Thrashing arises whenever the virtual machine assets of a device are overused, leading to constant paging and page defect, that affects the processing of most programs.  

In the given-question, only choice b is correct because this mechanism can be allocated to avoid the thumping of new pages if PFF is too high by increasing several frames or by removing expulsion frames.

Answer:  

B. A new page is allocated to a process if PFF is too high.

Explanation:

Page fault frequency: In computer science, the term "page fault frequency" is also referred as PFF, and is described as a direct approach that is being utilized to handle thrashing and is considered as the one that tends to use "page-fault frequency concept". However, the problem that is connected with the "thrashing" is the "high-page fault rate" and therefore it is responsible for controlling the "page fault rate". However, if the "page-fault rate" is considerably too high, then it tends to indicate that the process consist of only few frames that is being allocated to it.

Answer:

a smartphone ringing

Explanation:

An output device is a computer hardware that converts data or signals into readable form like text, graphic, audio, video, tactile. Example of output devices are monitor, speaker, printer, projector. A smartphone ringing is a computer hardware because it converts the information into readable form in the form of sound.

Input devices is a computer hardware that sends information to the computer for interaction and control. Examples are mouse, keyboard, fingerprint sensor, scanner e.t.c.

Answer:

A

Explanation:

Answer:

A) smaller

Explanation:

Answer:

Explanation:

The major reason i recommend python is that It has a ton of resources, and community support, such that it is practically impossible to get stuck while carrying out a project

Python is easy,and lets you build more functions with fewer lines of code.

More so, provides a stepping stone to learning other code and it is a very  flexible language

Answer:

function Enlistee( name, number ){

    constructor( ){

      super( ) ;

      this.name= name;

      this.number= number;

      this.Private= ( platoonNumber, yearOfService ) =>{

                             this.platoonNumber = platoonNumber;

                             this.yearOfService = yearOfService;

                             }

     }

}                

Explanation:

In Javascript, OOP ( object-oriented programming) just like in other object oriented programming languages, is used to create instance of a class object, which is a blueprint for a data structure.

Above is a class object called Enlistee and subclass "Private" with holds data of comrades enlisting in the military.

Answer:

1. a digital designer involves movement like animations, movies, etc. A graphic designer is static for an example logos pictures etc.

2. a ux is the interaction between humans and products

3.  a ui is the design of software and machines, for an example computers, electronic devices, etc.

4.  textures, color, value, and space

5. the basics are contrast, balance, emphasis, white space, hierarchy, movement, proportion, repetition, pattern, variety, unity, and rhythm

6. the basic fundamentals are images, color theory, lay-out, shapes, and typograph  

I hope this helped you and have a great rest of your day

Answer:

True

Explanation:

There are multiple challenges to the ICT education system, here are a few:

Answer:

True

Explanation:

Try and except statements (pseudo code) or try and catch (java, c++, etc)

is for error handing. The try and except "handles errors" If encountered an error, the try and except will try to "handle" the error and let the program continue running.

Given that,

Token is 64 bytes long

The average number of stations that the token must pass = 20

We need to calculate the transmission delay for token

Using formula of transmission delay

[tex]Transmission\ delay=\dfrac{token\ size}{minimum\ size}[/tex]

Put the value into the formula

[tex]Transmission\ delay=\dfrac{64\ bytes}{10\ Mbps}[/tex]

[tex]Transmission\ delay=\dfrac{64\times8}{10\times10^6}[/tex]

[tex]Transmission\ delay=0.0000512\ sec[/tex]

[tex]Transmission\ delay=5.12\times10^{-5}\ sec[/tex]

We need to calculate the average wait to receive token on an idle network with 40 stations

Using formula of average wait

[tex]\text{average wait to receive token}=\text{average number of stations that the token must pass}\times transmission\ delay[/tex]

Put the value into the formula

[tex]\text{average wait to receive token}=20\times5.12\times10^{-5}[/tex]

[tex]\text{average wait to receive token}= 0.001024\ sec[/tex]

[tex]\text{average wait to receive token}= 1.024\ ms[/tex]

Hence, The average wait to receive token on an idle network with 40 stations is 1.024 ms.

Answer:

Purpose of the interface

Provides communication − One of the uses of the interface is to provide communication. Through interface you can specify how you want the methods and fields of a particular type.Jul

Answer:

Artificial Intelligence (AI)

Explanation:

Artificial intelligence is a way of making computers to think critically, or act like humans. It involves the application of computer science and technology to produce critical problem solving device as humans.

It is a welcomed development and well accepted innovation to complement humans in proffering solutions to logical and critical problems. It has various applications in influencing the result or solution to mentally demanding tasks that require high intelligence.

Answer:

zero, foresight

Explanation:

figure it out

Answer:

The answer is "It Specifies the built-in chip in the module header".

Explanation:

The hardware simulator is also an instrument about which the device physical models could be constructed, in the mainframe, which includes a console, a power supply, or multiple sockets for plugging regular modules.

Answer:

Answered below

Explanation:

The agile approach to software development involves development through the collaborative efforts of integrated and organised teams and users. Nowadays, people follow this approach because it allows for faster deployment, continuous updates as well as flexibility in development.

In the face of this rapid development and deployment, security design can be a challenge to keep up with.

Some steps to implement security in an agile environment include;

- Approaching security implementation in the same agile way as software development.

- Making software developers responsible for secure development and implementation.

- Utilising continuous integration of security practices by integrating security solutions with the development tools.

Answer:

using namespace std;

int main() {

int number;

while (1) {

 cout << "Enter a number: ";

 cin >> number;

 cout << number << " is " << ((number % 2) ? "odd" : "even") << endl;

};

return 0;

}

Explanation:

This is a c++ version. Let me know if you need other languages.

The (number % 2) is the essence of the program. It returns 0 for even numbers, and 1 for odd numbers (the remainder after division by 2).

Answer:

The following are the explanation for each command, with the SMTP protocol considering only RFC 821.

Explanation:

The key commands of the SMTP protocols which take the RFC 821 into account are as follows:

HELLO -  

A client receives that order to describe himself  

HELP-  

It asks by the receivers to submit the command information as argument  

QUIT -  

It is used to terminate the message.  

-FROM MAIL  

The clients use it to acknowledge the message's sender.  

NOOP -  

The client does not use any procedure to verify the receiver status as required by the receiver's reply form.  

RCPT-  

The user needs it to determine the intended beneficiary.  

SAML-  

It sends or ends the specific mail which is sent to the mailbox or the SAML

RESET-  

The existing email transaction is aborted.  

SEND- The mail to be sent by the recipient's terminal, not its mailbox, is specified.  

TURN-  

It allows the sender to change position and recipients.  

VRFY-  

Verification checks the recipient's address.

Answer:

input number

calculate modulus of the number and 5

compare outcome to 0

if 0 then output "divisible by 5"

else output "not divisible by 5"

Explanation:

The modulo operator is key here. It returns the remainder after integer division. So 8 mod 5 for example is 3, since 5x1+3 = 8. Only if the outcome is 0, you know the number you divided is a multiple of 5.

Answer:

a) Linear probing is one of the hashing technique in which we insert values into the hash table indexes based on hash value.

Hash value of key can be calculated as :

H(key) = key % size ;

Here H(key) is the index where the value of key is stored in hash table.

----------

Given,

Keys to be inserted are : 5 , 205, 406,5205, 8205 ,307

and size of the array : 100.

First key to be inserted is : 5

So, H(5) = 5%100 = 5,

So, key 5 is inserted at 5th index of hash table.

-----

Next key to inserted is : 205

So, H(205) = 205%100 = 5 (here collision happens)

Recompute hash value as follows:

H(key) =(key+i) % size here i= 1,2,3...

So, H(205) =( 205+1)%100 = 206%100 = 6

So, key 205 is inserted in the 6th index of the hash table.

----------

Next Key to be inserted : 406

H(406) = 406%100 = 6(collision occurs)

H(406) =(406+1) %100 = 407%100 = 7

So, the value 406 is inserted in 7the index of the hash table.

-----------------

Next key : 5205

H(5205) = 5205%100 = 5(collision)

So, H(5205) = (5205+1)%100 = 6( again collision)

So, H(5205) = 5205+2)%100 = 7(again collision)

So, H(5205) = (5205+3)%100 = 8 ( no collision)

So, value 5205 is inserted at 8th index of the hash table.

-------------

Similarly 8205 is inserted at 9th index of the hash table because , we have collisions from 5th to 8th indexes.

-------------

Next key value is : 307

H(307) = 307%100 = 7(collision)

So, (307+3)%100 = 310%100 = 10(no collision)  

So, 307 is inserted at 10th index of the hash table.

So, hash table will look like this:

Key       index

5         5

205         6

406         7

5205 8

8205 9

307         10

b) Quadratic probing:

Quadratic probing is also similar to linear probing but the difference is in collision resolution. In linear probing in case of collision we use : H(key) = (key+i)%size but here we use H(key) =( key+i^2)%size.

Applying Quadratic probing on above keys:.

First key to be inserted : 5.

5 will go to index 5 of the hash table.

-------

Next key = 205 .

H(205) = 205%100 = 5(collision)

So. H(key)= (205+1^2)%100 = 6(no collision)

So, 205 is inserted into 6th index of the hash table.

--------

Next key to be inserted 406:

So, 406 %100 = 6 (collision)

(406+1^2)%100 = 7(no collision)

So, 406 is moved to 7th index of the hash table.

----------

Next key is : 5205

So, 5205%100 = 5 (collision)

So, (5205+1^2)%100 = 6 ( again collision)

So, (5205+2^2)%100 = 9 ( no collision)

So, 5205 inserted into 9th index of hash table.

-----------

Next key is 8205:

Here collision happens at 5the , 6the , 9th indexes,

So H(8205) = (8205+4^2)%100 = 8221%100 = 21

So, value 8205 is inserted in 21st index of hash table.

--------

Next value is 307.

Here there is collision at 7the index.

So, H(307) = (307+1^2)%100 = 308%100= 8.

So, 307 is inserted at 8the index of the hash table.

Key           Index

5                  5

205                  6

406                  7

5205                9

8205               21

307                   8

Answer:

Here is the C++ program:

#include <iostream>  //to use input output functions

using namespace std;  //to identify objects like cin cout

bool verifyLength(string password);  // to verify length of password

bool verifyUpper(string password);  //to verify if  password contains uppercase letters

bool verifyLower(string password);  //to verify if  password has lowercase letters

bool verifyDigit(string password);  // to verify if password contains digits

int main() {   //start of main() function

   string password = " ";  //to hold password string input by user

  while(true)     {  //loop that verifies the password. The loop keeps prompting user to enter a valid password telling what criteria is to be met to verify password.

       cout << "\nPlease enter your password: ";  // prompts user to enter a password

       getline(cin, password);  //reads and gets password from user

           if (verifyLength(password) == false)  // calls verifyLength to check length criteria for password. Checks if length of password is less than 6

             { cout << "The password should be at least six characters long.\n";}                                        

else if (verifyUpper(password) == false)   { // calls verifyUpper to check criteria for password letters to be in uppercase. Checks if password does not have an uppercase letter

   cout << "The password should contain at least one uppercase letter.\n";  }  

         else if (verifyLower(password) == false) {  // calls verifyLower to check criteria for password letters to be in lowercase.  Checks if password does not contain a lowercase letter

           cout << "The password should contain at least one lowercase letter.\n";   }

          else if (verifyDigit(password) == false)  {   // calls verifyDigit to check digit criteria for password. Checks if password does not contain a digit

           cout << "The password should have at least one digit.\n";    }  

        else {  //if password meets the criteria

          cout << "Password verified!\n";  

         break;   }     } }   //breaks the loop                

Explanation:

Here are the method that are called to verify the stated criteria:  

bool verifyLength(string password)  {  // this method takes input password as parameter to verify the length criteria and returns true of false accordingly

   bool length = false;   // the bool type variable length is initially set to false

   if(password.length() >= 6)  //if the length of the password that is obtained by using length() function is greater than or equals to 6 then it means it meets valid password length criteria

   length = true;   //set length to true when above if statement is true

   else  //if length of password is less than 6

   length = false;   //set length to false if length of password  is less than 6

   return length;  }   //return the state of length

bool verifyUpper(string password)  {  // this method takes input password as parameter to verify the uppercase criteria and returns true of false accordingly

   bool upper = false;   // the bool type variable upper is initially set to false

   for (int i = 0; i < password.length(); i++)     { //the loop iterates through the letter of password string until the length of the string is reached

       if (isupper(password[i]))         {  //it checks if any letter of the password is in uppercase using the isupper() method

           upper = true;       }        }   //set upper to true when above if condition is true

   return upper;  }  //returns the state of upper

bool verifyLower(string password)  { // this method takes input password as parameter to verify the lowercase criteria and returns true of false accordingly

   bool lower = false;  // the bool type variable lower is initially set to false

   for (int i = 0; i < password.length(); i++)     { //the loop iterates through the letter of password string until the length of the string is reached

       if (islower(password[i]))         {  //it checks if any letter of the password is in lowercase using the islower() method

           lower = true;         }     }   //set lower to true when above if condition is true

   return lower;  } //returns the state of lower accordingly

bool verifyDigit(string password)  {  // this method takes input password as parameter to verify the digit criteria and returns true of false accordingly

   bool digit = false;   // the bool type variable digit is initially set to false

   for (int i = 0; i < password.length(); i++)     {  //the loop iterates through each letter of password string until the length of the string is reached

       if (isdigit(password[i]))         {  //it checks if any letter of the password is a digit using the isdigit() method

           digit = true;         }     } //set digit to true when above if condition is true

    return digit;  }    //returns the state of digit accordingly                                  

The output of program is attached.

Answer:

True

Explanation:

The Federal communications commission (FCC), is responsible for evaluating the effect of radio frequency and electromagnetic radiations and emissions on the consumers of products which make use of these frequencies and radiation energy. Devices such as cell phones are not allowed to emit radiation higher than a certain safe standard or frequency, set by the Federal communications commission.

The Federal communications commission also provides bulletins and publications that present safety information and guidelines for industries and consumers involved with radio frequency and electromagnetic radiation.

Answer:

True

Explanation:

The ESP register acts as an indirect operand pointing to the top of the stack at any time.

Stack grows downwards from high memory when a program adds to the stack. However, when items are removed from the stack, it shrinks upwards from low to high memory.

The assembler reduces the stack pointer(ESP) register by 2, when a word value is pushed on to the stack. On the other hand, the assembler increases the stack pointer by 2 when a word value is popped off.

The assembler decreases or increases the ESP register by 4 when a double word value is pushed or popped off the stack respectively. Therefore the ESP register changes in multiples of 4.

Answer:

add new for each loop:

for (int i : userValues)

   if(i == matchValue) numMatches++;

this goes through every userValue and check if it matches match Value.

if it does, then increment numMatches.

Full Question

Write a program that takes a first name as the input, and outputs a welcome message to that name. Ex: If the input is Pat, the output is: Hello Pat, and welcome to CS Online!

Answer:

Python

nname = input("What is your name: ")

print("Hello "+nname+" , and welcome to CS Online!")

Explanation:

The programming ls not stated; However, I'll answer using Python

Python (See bold texts for line by line explanation)

This line prompts the user for input

nname = input("What is your name: ")

This line prints the welcome message

print("Hello "+nname+" , and welcome to CS Online!")

Answer:

firewall

Explanation:

a fire wall keeps unwanted hackers and viruses out of a computers system

Answer:

Two advantages of touch screen inputs are; free of hardware input problems and the adaptivity of mobile applications.

Two disadvantages of touch screen inputs are; screen usage and software error.

Explanation:

Touch screen input is a slick application of finger-on-screen interaction with gadgets, that promotes mobility. It cancels the need for hardware input devices, reducing system size and weight.

But with its slickness comes extra memory usage and screen space consumption.

Answer:

b. data type of arguments

Explanation:

One of the ways to overload a method is using different type of arguments. Let's say we have a method that finds and returns two integer values

public int sumValues(int num1, int num2){

       return num1 + num2;

}

We can overload this method by passing double values as arguments

public double sumValues(double num1, double num2){

       return num1 + num2;

}