Which option is a benefit of implementing a client/server arrangement over a peer-to-peer arrangement?


(A) Client/server networks can easily scale, which might require the purchase of additional client lisences.

(B) Client/server networks can cost more than peer-to-peer network. for example, client/server network might require the purchase of dedicated server hardware and a network OS with an appropriate number of lisences.

(C) peer-to-peer network can be very difficult to install.

(D) peer-to-peer networks typically cost more than client/server networks because there is no requirement for dedicated server resources or advance NOS software.

Answer: (C) File Output Stream and Data Output Stream

Explanation:

 The File output stream and data output stream classes are basically created to write the data into the binary file. The data output steam class is the output steam used to write various data types in the java in the efficient way.

The file output steam class is basically used to create the text file and store the various type of the data into individual bytes.

The file in the file output steam class basically represent the storage of the various type of the data in the binary file.

Answer: Conditional operator are the ternary operator that work during a particular condition in which they returns a value as a result.This mechanism of the conditional operator helps in the making of the decision. The advantages of the conditional operator are as follows:-

Answer: Strong 128-bit encryption.

Explanation: An individual character corresponds to 8 bits . So if there are 16 characters then,

16[tex]\times[/tex]8=128 bits keys

This makes the 128 bit key encryption the strongest amongst all other options.It is strongest because it is almost impossible to decode the 128-character key  by any method e.g.-brute-force method.

Other options are incorrect because the characters given by the other bits are as follows:  [tex]{\frac{256}{8}[/tex]=32 characters

                         [tex]{\frac{512}{8}[/tex]=64 characters

                         [tex]{\frac{512}{8}[/tex]=128 characters  

Thus, the strongest character key is of 128 bits. for cipher.

Answer:

The answer is: 100011.001₂.

Explanation:

First, transform to binary the integer part: 35. Divide the number repeatedly by 2, keeping track of each remainder, until we get a quotient that is equal to 0:

Now, construct the integer part base 2 representation, by taking the remainders starting from the bottom of the list:

Then, transform to binary the fractional part: 0.125. Multiply it repeatedly by 2, keeping track of each integer part of the results, until we get a fractional part that is equal to 0:

Construct the fractional part base 2 representation by taking all the integer parts of the multiplying operations, starting from the top of the list.

0.125₁₀ =  0.001₂

Then you have:

35.125₁₀ =  100011.001₂

Answer: The benefits provided by object-oriented approach for the development of the operating system are as follows:-

 Answer:War driving

Explanation: War driving is the activity which is done for searching for the Wi-Fi connection while driving vehicle .The main purpose of the war driving is gaining and accessing the network of Wi-Fi by being in slowly moving vehicle. The act is carried out by the individual or more people.

Other options are incorrect because Wifi driving and Wifi finding are not technical words in the computer field and E-stalking is the stacking activity with the help of internet enables electronic devices.Thus, the correct option is war driving.

The correct answer is Wardriving

Explanation:

Nowadays, it is common people want to access the internet most of the time even if this involves using networks without authorization by connecting a device such as a cellphone or a computer to a Wi-Fi network that is a wireless technology to access the internet. In this context, one common practice is wardriving in which you look for a Wi-Fi network by using a vehicle to move through different zones until finding one network you can access and use. This involves using networks from public places or private networks that do not require a password. According to this, it is wardriving the term that refers to driving around an area to find a Wi-Fi network to access and use it with no authorization.

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// function that return the number of vowels in the input string

int count_vowels()

{

// variable

   string str;

   int v_count=0;

   cout<<"enter the string:";

   // read the string

   cin>>str;

   // fuind the length

   int len=str.length();

   // check for vowel

   for(int x=0;x<len;x++)

   {

       char ch=str[x];

       if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u'||ch=='A'||ch=='E'||ch=='I'||ch=='O'|ch=='U')

       {

           v_count++;

       }

   }

   // return the count

   return v_count;

}

// driver function

int main() {

// call the function and print the result

cout<<"number of vowels in string is : "<< count_vowels()<<endl;

return 0;

}

Explanation:

In the function count_vowels(), read a sting and then find its length.Then check each character of the string is vowel or not.If it is vowel then Increment the v_count. After the loop return the count to main function and print it.

Output:

enter the string: welcometoprogramming

number of vowels in string is : 7

Answer: Suboptimization is referred to as a term that has been approved for common policy mistake. It usually refers to the practice of concentrating on a single component of a whole and thus making changes which are intended towards improving that component and also ignoring its effects on other components.

Answer: 1111

Explanation: As a decimal number can be decomposed in a sum of products involving powers of ten, it can be factored as a sum of products of powers of 2 in order to convert to binary.

In the example, we can write 15 as a decimal number in this way:

1* 10¹ + 5* 10⁰ = 15

Decomposing in powers of 2:

1*2³ + 1* 2² + 1*2¹ + 1.2⁰ = 1 1 1 1 = (15)₂

Answer:

The java program for the given scenario is given below.

This program can be saved as HW2.java.

import java.util.Scanner;

public class HW2 {

   public static void main(String args[]) {

      HW2 ob = new HW2();  

     Scanner sc = new Scanner(System.in);

     int len;      

     System.out.println( "Enter the number of elements to be entered in the array");

     len = sc.nextInt();

     int[] arr = new int[len];

     System.out.println( "Enter the elements in the array");

     for( int k=0; k<len; k++ )

     {

         arr[k] = sc.nextInt();

     }

     boolean sort = ob.isSorted(arr, len);

     System.out.println( "The elements of the array are sorted: " + sort );

   }    

   public boolean isSorted( int a[], int l )

   {

       int sort = 0;

       if( l==1 )

           return true;

       else

       {        

           for( int k=1; k<l; k++ )

           {

               if(a[k-1] < a[k])

                   continue;

               else

               {

                   sort = sort + 1;

                   break;

               }

           }

           if(sort == 0)

               return true;

           else

               return false;

       }

   }

}

OUTPUT

Enter the number of elements to be entered in the array

3

Enter the elements in the array

1

2

1

The elements of the array are sorted: false

Explanation:

1. First, integer variable, len, is declared for length of array. User input is taken for this variable.

2. Next, integer array is declared having the size, len. The user is prompted to enter the equivalent number of values for the array.

3. These values are directly stored in the array.

4. Next, the function isSorted() is called.

5. This method uses an integer variable sort which is declared and initialized to 0.

6. Inside for loop, all elements of the array are tested for ascending order. If the 1st and 2nd elements are sorted, the loop will continue else the variable sort is incremented by 1 and the loop is terminated.

7. Other values of the variable sort indicates array is not sorted.

8. A Boolean variable, sort, is declared to store the result returned by isSorted method.

9. Lastly, the message is displayed on the output whether the array is sorted in ascending order or not.

Answer:

Automation testing can be used for:

Input-output test : If the main function of your software is to transform input data into output data you can configure a new test by providing a new input/output pair, then the test will check to see if the output matches with the expected values.

Unit test : This test is a script to check the return values of a specific code by initializing it and calling his methods. This is a part of a test-driven development process.

Integration test : This test is a code level script that does a complete check process involving multiple objects. For example, you might make a test for “buy a product” which checks to see if the database is updated, if the data is correct of the person is correct, and if the person placing the order gets the right confirmation email.

Smoke Tests: This test is executed immediately after implementation on production to ensure that the application is still functioning.

Answer: PC servers

Explanation: PC(Personal computer) servers are the helps in the utilization of the network services to the software and hardware of the computer. It manages the network resources . In the past time ,Mindrange computers, mini computers etc are present time's PC servers.

Other options are incorrect because laptops ,PDA(Personal digital assistant) or tablets are the modern version of the computer units that are portable and compact with fast processing. Thus the correct option is option PC servers.

Answer: (D) Must be downloaded and installed as a separate package.

Explanation:

  The python MySQL (Structured query language) connector library ought to be downloaded and introduced as separate package. It is utilized to interface MySQL database from python.

The MySQL Installer can introduce and deal with numerous, separate MySQL server occurrences on a similar host simultaneously.

MySQL Installer doesn't allow server updates among major and minor form numbers, however permits redesigns inside a discharge arrangement

Answer:

#include <bits/stdc++.h>

using namespace std;

int main()

{

   // variables

   char cust_t;

   int no_gallon;

   double cost=0;

   cout<<"Enter the type of customer(B for business or R for residential):";

   // read the type of customer

   cin>>cust_t;

   // if type is business

   if(cust_t=='b'||cust_t=='B')

   {

       cout<<"please enter the number of gallons:";

       // read the number of gallons

       cin>>no_gallon;

       // if number of gallons are less or equal to 8000

       if(no_gallon<=8000)

       {

           // calculate cost

           cost=no_gallon*0.006;

           cout<<"total cost is: $"<<cost<<endl;

       }

       else

       {

           // if number of gallons is greater than 8000

           // calculate cost

           cost=(8000*0.006)+((no_gallon-8000)*0.008);

           cout<<"total cost is: $"<<cost<<endl;

       }

   }

   // if customer type is residential

   else if(cust_t=='r'||cust_t=='R')

        {

       cout<<"please enter the number of gallons:";

       // read the number of gallons

       cin>>no_gallon;

       // if number of gallons are less or equal to 8000

       if(no_gallon<=8000)

       {

           // calculate cost

           cost=no_gallon*0.007;

           cout<<"total cost is: $"<<cost<<endl;

       }

       else

       {// if number of gallons is greater than 8000

       // calculate cost

           cost=(8000*0.005)+((no_gallon-8000)*0.007);

           cout<<"total cost is: $"<<cost<<endl;      

       }        

   }

return 0;

}

Explanation:

Ask user to enter the type of customer and assign it to variable "cust_t". If the customer type is business then read the number of gallons from user and assign it to variable "no_gallon". Then calculate cost of gallons, if  gallons are less or equal to 800 then multiply it with 0.006.And if gallons are greater than 8000, cost for  first 8000 will be multiply by 0.006 and  for rest gallons multiply with 0.008.Similarly if customer type is residential then for first 8000 gallons cost will be multiply by 0.005 and for rest it will  multiply by 0.007. Then print the cost.

Output:

Enter the type of customer(B for business or R for residential):b                                                                                            

please enter the number of gallons:9000                                                                                                                      

total cost is: $56  

Answer: Unauthorized data disclosure is the revealing of the confidential or private data to the unauthorized user. The disclosure of such data can be highly risk because it can lead to the several ways in which information can be misused . This incident can be due to attacking and stealing of data on purpose or by accident.

They purposely disclosure of data can be done through the methods like spoofing, sniffling etc.It is considered as the malicious activity which is a punishable crime if done on purpose.Top avoid such situation the exchange of information should be done carefully and in secure manner.

Answer: White noise is the merging of the audible signal of different frequencies varying from high to low into a single unit. The number of frequencies combined  in white noise more than 20,000. It helps in masking the other noise in the environment.

In accordance with the signal, white noise acts as a statistical mode which merges all the signal into one with same intensity which results in the power spectral density being persistent.

E.g.- Any business process of company that requires attention and speedy working such as creating report, presentation can get affected by the white noise in positive  or negative manner depending on the person.It might lead to increment or decrement in the cognitive performance of employees.

White noise can be remove by several software present in the market, removing it by the "Noise removal" option from the Effects menu in operating system, etc.  

Answer:

The importance of generalization are as follow:

Answer:

// here is code in c++.

#include <bits/stdc++.h>

using namespace std;

// main function

int main()

{

// variables

int y_len,y_wid;

int h_len,h_wid;

// read the length and width of yard

cout<<"Enter the legth of yard:";

cin>>y_len;

cout<<"Enter the width of yard:";

cin>>y_wid;

// read the length and width of house

cout<<"Enter the legth of house:";

cin>>h_len;

cout<<"Enter the width of house:";

cin>>h_wid;

// calculate grass area

int g_area=(y_len*y_wid)-(h_len*h_wid);

// find the time

int t=g_area/2;

// print the time

cout<<"time required to cut the grass is: "<<t<<" seconds."<<endl;

return 0;

}

Explanation:

Read the length and width of the yard. Then read the length and width of house from user.Calculate the area of grass by subtracting the area of house from area of yard.Then divide the area of grass by rate of 2 square feet per second.

Output:

Enter the legth of yard:25

Enter the width of yard:20

Enter the legth of house:15

Enter the width of house:12

time required to cut the grass is: 160 seconds.

Final answer:

To calculate the mowing time, subtract the house's area from the yard's, then divide by the cutting rate of 2 square feet per second. The code provided demonstrates a simple Python function to perform these calculations.

Explanation:

The question requires writing a program to calculate the time needed to cut grass that is left after a house is subtracted from a rectangular yard. The cut rate is two square feet per second. To solve this, you first calculate the total area of the yard and the house, then subtract the house's area from the yard's area to get the grassy area that needs cutting. Finally, you divide this area by the cut-rate to obtain the time required.

Here is a basic program outline in Python:

def calculate_mowing_time(yard_length, yard_width, house_length, house_width):

   yard_area = yard_length * yard_width

   house_area = house_length * house_width

   grass_area = yard_area - house_area

   mowing_time_seconds = grass_area / 2

   return mowing_time_seconds

Call this function with the specific dimensions to get the time required.

Explanation:

Monitoring someone's emails,voice mails and computer files is considered is illegal because you are accessing someone's personal information which is not regarded as  ethical .

There are certain reasons where one's email,voice mails and computer files can be monitored are as following:

Answer:

I will code in Javascript:

function sumOddAndEven(){

//Define and initialize variables.

var numbers = [1,2,3,4,5,6,7,8];

var sum = [0,0];

for ( var i = 0;  i < numbers.length ; i++ ){  // loop to go throght the numbers

if(numbers[i] > 0) { // if the number is positive

  if(numbers[i]%2 == 0) {  // if number is even and

     sum[0] = sum[0] + numbers[i];  //adds in the first place of sum

   }

   else{  

     sum[1] = sum[1] + numbers[i];  // else adds in the second place of sum

   }

 }

}

 return sum; //return an array with the sum of the positive evens numbers  in the first place and the sum of the positive odd numbers in the second place.

}  

Answer:

Option(c) is the correct answer for the given question.

Explanation:

The method variable overrides the class variable name with same name The method variable overrides of the class variable name .

Following are the example in java language

public class Main

{

int b=90; // class varaible or instance varaible

void sum()

{

   int b=34; // method having same name as class varaible name

   b=b+10;

   System.out.println(b); // display b

}

public static void main(String[] args)  // main method

{

 Main ob=new Main(); // craete object

 ob.sum(); // calling method sum

}

}

Output:

44

In this we declared a variable 'b' as int type in class and override this variable in sum() function it means same variable name is declared in function sum() .

acquiesces ,destroys,alters are the wrong for the given question.

So overrides is the correct answer

A class can inherit from a super class whose behavior is “near enough” and then adjust behavior as necessary thanks to the ability of a subclass to override a method. Thus, option C is correct.

The name, number, type, and return type of the overriding method are the same as those of the method it overrides.

In the case of method overriding, the overridden methods entirely replace the inherited method.

However, in the case of variable hiding, the child class conceals the inherited variables rather than replacing them.

In a nutshell, a class variable cannot be overridden. In Java, class variables are hidden rather than overridden. For example, overriding is for methods. Overriding differs from hiding.

Therefore, overrides  A method variable a class variable with the same name.

Learn more about overrides here:

https://brainly.com/question/20216755

#SPJ2

Answer: Move handle

Explanation: In the field of the database, the unique identifier for an object is created that is known as handle which is for the driving purpose in the database.It is also used for the connection of the database .The object in the database containing data keeps the management of the handle.

It has a handle named move handle ,which is responsible for the movement control of upper left corner in an object.It is in a large in form for the dragging of the object that is selected.

Answer:

ln -s /etc /root/Desktop

Explanation:

ln is the command to create links and -s is the flag to create symbolic links between element1 and element2

Example:

ln -s /etc /root/Desktop

Create a symbolic link between folder etc and folder Desktop

Answer: d) B & C

Explanation: Variable substitution is the method through which the command substitution is done for the other form of command and regains its value or meaning.

This value substitution is done with the help of double quotes("...") which are inverted as well when a new form of command is to be introduced and it is   known as back quotes. Other given options are incorrect because it is not determined in single quotes.Thus the correct option is option (d).

Answer: (A) Inside of single quotes

Explanation:

 The variable substitution or we can say that expansion occur inside the single quotes because the generation of the file name typically happened inside the single quotes only.

When we enclosing the character and different types of variable with the single quotes ( ' ) then, it basically represent the actual value of the characters. In this way, the estimation of any factor can't be perused by single statement and a solitary statement can't be utilized inside another single quote statements.

Answer:

Explanation:

Lawyer  This option is irrelevant

Answer:

operating system

web browser

word processor

device driver

the clipboard

Explanation:

got these answers right and also got a 100 on it

Answer:

TRUE

Explanation:

Roman numerals system is a system of numerical notations, that involves using combination of uppercase letters from the Latin alphabet to represent numbers. This system was used in the ancient Rome.

This system involves the use of seven uppercase letters from the Latin alphabet as symbols to represent a fixed integer value.

The symbol I represents the integer 1, V represents the integer 5, X represents the integer 10, L represents the integer 50, C represents the integer 100, D represents the integer 500 and M represents the integer 1000.

Answer: d) Network

Explanation: IPv4(internet protocol version 4) is the decimal-digit numeric value  for the internet protocol.It helps in the identification of the hosts  through logical addresses. The functioning of  IPv4 helps in the routing of the information over the network.

The network layer contains router that is responsible for the routing of message between the nodes of the path.Router functions with internet protocol.Other options are incorrect because protocol is the set of riles,data link layer works for managing the movement of data and  transport layer monitors the transmission of data.Thus ,correct option is option(d)

Answer: Memory hierarchy is the hierarchy that is created on the basis of the response time of different memories. The performance obtained by the memory helps in creating a computer storage space in distinguished form. The factors considered for the creating of the hierarchy structure are usually response time, storage capacity, complexity etc.

Usage of different kind of memories take place due to different kind of requirements from the system which cannot be fulfilled using one memory device.The requirement is based on saving time, decreasing complexity , improving performance etc.Example of requirements can be like some functions and files do not require much space , some might require quick accessing,etc.

Thus hierarchy of any particular system is in the form of fast to slow order from registers,cache memory, Random access memory(RAM) and secondary memory.

Answer: (B) Buffered

Explanation:

 Buffered connection is basically used to control the internal error exception. The buffer cursor are basically executed different queries like fetchall() and fetchone(), these are the row fetching method. It is basically used to return the row from set of the buffered row.

For creating the buffered cursor we can use the buffered argument and call the cursor connection.

On the other hand, all the other options are incorrect because it cannot control the internal error only buffered connection can do.

Therefore, Option (B) is correct.