what is it with the order of operations

Answer:

Excel Solver

Explanation:

Answer:

u r

Explanation:

dumb

Answer:

a) True

Explanation:

A macro virus infects executable portions of code. A virus that attaches to an executable program can do anything the program is permitted to.

Most use an Email for spreading macro viruses, which is a common method and is rather easy. Although, more advanced softwares trick people into giving personal information.

Answer:

Here is the C++ program for Employee class with fields id,name and sal.

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

#include <string>  //to manipulate and use strings

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

class Employee {  //class Employee

private:  

/* the following data members are declared as private which means they can only be accessed by the functions within Employee class */

  string name;  //name field

  int id; //id field

  double sal;   //salary field

public:    

  Employee();  // constructor that initializes an object when it is created

/* setName, setID and setSalary are the mutators which are the methods used to change data members. This means they set the values of a private fields i.e. name, id and sal */

  void setName(string n)  //mutator for name field

     { name = n; }        

  void setId(int i)  //mutator for id field

     { id = i; }        

  void setSalary(double d)  //mutator for sal field

     { sal = d; }  

/* getName, getID and getSalary are the accessors which are the methods used to read data members. This means they get or access the values of a private fields i.e. name, id and sal */

  string getName()  //accessor for name field

     { return name; }        

  int getId()  //accessor for id field

     { return id; }        

  double getSalary()  //accessor for sal field

     { return sal; }  };  

Employee::Employee() {  //default constructor where the fields are initialized

  name = "";  // name field initialized

  id = 0;  // id field initialized to 0

  sal = 0;   }   // sal field initialized to 0

void display(Employee);  

// prototype of the method display() to display the data of Employee

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

  Employee emp;  //creates an object emp of Employee class

/*set the name field to Abc Xyz which means set the value of Employee class name field to Abc Xyz  through setName() method and object emp */

  emp.setName("Abc Xyz");  

/*set the id field to 1234 which means set the value of Employee class id field to 1234  through setId() method and object emp */

  emp.setId(1234);

/*set the sal field to 1000 which means set the value of Employee class sal field to 1000  through setSalary() method and object emp */

  emp.setSalary(1000);    

  display(emp);  }   //calls display() method to display the Employee data

void display(Employee e) {  // this method displays the data in the Employee //class object passed as a parameter.

/*displays the name of the Employee . This name is read or accessed through accessor method getName() and object e of Employee class */

  cout << "Name: " << e.getName() << endl;  

/*displays the id of the Employee . This id is read or accessed by accessor method getId() and object e */

  cout << "ID: " << e.getId() << endl;

/*displays the salary of the Employee . This sal field is read or accessed by accessor method getSalary() and object e */

  cout << "Salary: " << e.getSalary() << endl;  }

Explanation:

The program is well explained in the comments mentioned with each statement of the program.

The program has a class Employee which has private data members id, name and sal, a simple default constructor Employee(), mutatator methods setName, setId and setSalary to set the fields, acccessor method getName, getId and getSalary to get the fields values.

A function display( ) is used to display the Employee data i.e. name id and salary of Employee.

main() has an object emp of Employee class in order to use data fields and access functions defined in Employee class.

The output of the program is:

Name: Abc Xyz                                                                                                      

ID: 1234                                                                                                                  

Salary: 1000

The program and its output are attached.

Answer:

(b) is used in Traceroute

(d) is used by Ping

Explanation:

ICMP is the short form of Internet Control Message Protocol. It is a protocol used by networking devices such as routers to perform network diagnostics and management. Since it is a messaging protocol, it is used for sending network error messages and operations information. A typical message could be;

i. Requested service is not available

ii. Host could not be reached

ICMP does not use ports. Rather it uses types and codes. Some of the most common types are echo request and echo reply.

Traceroute - which is a diagnostic tool - uses some messages available in ICMP (such as Time Exceeded) to trace a network route.

Ping - which is an administrative tool for identifying whether a host is reachable or not - also uses ICMP. The ping sends ICMP echo request packets to the host and then waits for an ICMP echo reply from the host.

ICMP is not required to solve NAT traversal problem neither does it have a new version in IPV6.

Answer:

milespergallon = float(input())

dollarspergallon = float(input())

milestodrive = int(input())

trip_cost = milestodrive / milespergallon * dollarspergallon

print('Cost to drive {:d} miles at {:f} mpg at $ {:.2f}/gallon is: $ {:.2f}'.format(milestodrive, milespergallon, dollarspergallon, trip_cost))

Explanation:

Get the inputs from the user for milespergallon, dollarspergallon and milestodrive

Calculate the trip_cost, divide the milestodrive by milespergallon to get the amount of gallons used. Then, multiply the result by dollarspergallon.

Print the result as requested in the question

Answer:

def driving_cost(driven_miles, miles_per_gallon, dollars_per_gallon):

  gallon_used = driven_miles / miles_per_gallon

  cost = gallon_used * dollars_per_gallon  

  return cost  

miles_per_gallon = float(input(""))

dollars_per_gallon = float(input(""))

cost1 = driving_cost(10, miles_per_gallon, dollars_per_gallon)

cost2 = driving_cost(50, miles_per_gallon, dollars_per_gallon)

cost3 = driving_cost(400, miles_per_gallon, dollars_per_gallon)

print("%.2f" % cost1)

print("%.2f" % cost2)

print("%.2f" % cost3)

Explanation:

Answer:

Following is the program in python programming language

sports = [14, 25, 32, 63, 79, 38, -10] #list sports  

print("The original list is : " + str(sports)) #display original list

last = sports[-3:] #extracts the last 3 items from the list

print("The last 3 elements of list is : " + str(last)) #display the last 3 item

Output:

The original list is  : [14, 25, 32, 63, 79, 38, -10]

The last 3 elements of list is: [79, 38, -10]

Explanation:

Following are the description of program

Answer:

1 Option(A) is the correct answer .

2 Option(A) and Option(B) is the correct answer .

Explanation:

1

In this the administrator of the system built the new UTM capable of reviewing the  SSL / TLS flow for the suspicious payloads it see that the both inbound traffic flow originating from both the web and stopping on protected application server of the business .The full CA certificate sequence of web servers should be built on a UTM configuration will solve the problem .

2

The Two-factor authentication is used for the security purpose .In this technique only authorized people will accessing the data  the unauthorized people is not accessing the data.

Answer:

Distributed Consensus

Explanation:

A distributed system refers to a set of connected computers to achieves a goal. They can each work independently and they usually appear as a single computer system to end users.

Database computations usually require each connected computer node to agree on the computations and results  before submitting it to the database.

This process is referred to as a Distributed Consensus.

A distributed consensus makes sure that in a distributed system, the data among nodes all reach an agreement and make confirmations before submitting to a database.

Answer:

third ighjojdudjz

ghddduewjj

wkckdjjj

Explanation:

cchmddkhwmx

ndhdnahdd

jruditndjed

Answer:

The answer is "It uses the section access with in the qlikview script".

Explanation:

QlikView is now QlikSense, it comes with section access, that protects against this danger. It a way of determining, which can display certain details, it is also known as objects, that can be displayed by whom and out of which domain, etc.

There are different aspect of  security mechanism. The security mechanism that one does find the file containing data of the users/user groups have inbuilt security is that  the section access with in the qlikview script".

There are different mechanisms that is often used to secure the Web.  This is made of the mechanisms that is often used to apply security and they includes virtual private networks (VPNs), encryption, firewalls, routing filters, etc.

Note that a security mechanism in QlikView is often set up in two distinct ways or means, This can be done by building it into the QlikView document script, or by setting it up via the use of QlikView Publisher.

Learn more about Security mechanism from

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Answer:

False.

Explanation:

SONET is an acronym for synchronous optical networking while SDH is an acronym for synchronous digital hierarchy. They are both standard protocols used for the transmission of multiple digital bit streams (multiplex) synchronously through an optical fiber by using lasers.

Hence, both SONET and SDH are interoperable and typically the same standard protocols in telecommunication networks. Also, the SONET is a standardized protocol that is being used in the United States of America and Canada while SDH is an international standard protocols used in countries such as Japan, UK, Germany, Belgium etc.

The synchronous optical networking was developed in 1985 by Bellcore and it was standardized by the American National Standards Institute (ANSI). SDH was developed as a replacement for the plesiochronous digital hierarchy (PDH).

Generally, SONET comprises of four functional layers and these are;

1. Path layer

2. Line layer.

3. Section layer.

4. Physical or Photonic layer.

The SDH comprises of four synchronous transport modules and these are;

1. STM-1: having a basic data rate of 155.52Mbps.

2. STM-4: having a basic data rate of 622.08Mbps.

3. STM-16: having a basic data rate of 2488.32Mbps.

4. STM-64: it has a basic data rate of 9953.28Mbps.

These two standard telecommunications protocols are used to transmit large amounts of network data over a wide range through the use of an optical fiber.

Answer:

Most HTML tags are fixed

Explanation:

There are various kind of technology one can use for designing web application. A web designer should know HTML, CSS and other basic building block of web development.

HTML meaning hypertext markup language is used to define the basic structure of a web page . HTML has tags which are used to declare the contents on the web page. The tags includes anchor(<a>), paragraph tag(<p>),header tag(<h1>).

CSS which is known as Cascading style sheet describes the presentation of the web pages.

Other tags in HTML includes <img>, <link>, <ul>  etc and generally this tags are HTML tags which are fixed for a particular kind of job . For example you can't use an image tag <img>   to enclose video instead you use a video tag <video> tag. The header tag <h1> cannot be represented like a paragrapgh tag<p> on the web page. The both of them serve specific purpose and are fixed.  

Answer:

The program written in Python is as follows

nums = []

for i in range(0,68):

-->nums.append(i)

print(nums)

Explanation:

Please note that --> is used to denote indentation

The first line creates an empty list

nums = []

This line creates an iteration from 0 to 67, using iterating variable i

for i in range(0,68):

This line saves the current value of variable i into the empty list

nums.append(i)

At this point, the list has been completely filled with 0 to 67

This line prints the list

print(nums)

Answer:

Here is the Python program.

def DigitList(number):  

   return sum(map(int, str(number)))  

list = [18, 23, 35, 43, 51]  

ascendList = sorted(list, key = DigitList)  

print(ascendList)

Explanation:

The method DigitList() takes value of numbers of the list as parameter. So this parameter is basically the element of the list. return sum(map(int, str(number)))  statement in the DigitList() method consists of three methods i.e. str(), map() and sum(). First the str() method converts each element of the list to string. Then the map() function is used which converts every element of list to another list. That list will now contain digits as its elements. In short each number is converted to the string by str() and then the digit characters of each string number is mapped to integers. Now these digits are passed to sum() function which returns the sum. For example we have two numbers 12 and 31 in the list so each digit is 1 2 and 3 1 are added to get the sum 3 and 4. So now the list would have 3 4 as elements.

Now list = [18, 23, 35, 43, 51] is a list of 5 numbers. ascendList = sorted(list, key = DigitList)  statement has a sorted() method which takes two arguments i.e. the above list and a key which is equal to the DigitList which means that the list is sorted out using key=DigitList. DigitList simply converts each number of list to a another list with its digits as elements and then returns the sum of the digits. Now using DigitList method as key the element of the list = [18, 23, 35, 43, 51] are sorted using sorted() method. print(ascendList) statement prints the resultant list with values in the list in ascending order sorted by the sum of their digits.

So for the above list [18, 23, 35, 43, 51] the sum of each number is 9 ,5, 8, 7, 6 and then list is sorted according to the sum values in ascending order. So 5 is the smallest, then comes 6, 7, 8 and 9. So 5 is the sum of the number 23, 6 is the sum of 51, 7 is the sum of 43, 8 is the sum of 35 and 9 is the sum of 18. So now after sorting these numbers according to their sum the output list is:

[23, 51, 43, 35, 18]                                                                                                          

Answer:

I think false

hope it helps

Answer:

False

Explanation:

The return key is the backspace or escape key.

Hope it helps.

Answer:

a tactile input device

Explanation:

Based on the scenario being described it can be said that the best assistive technology for Bernard would be a tactile input device. Such a device would allow Bernard to physically interact with the print on the chalkboard or overhead screen from the device itself without having to actually get close to the chalkboard or screen. Thus allowing him to view its content from the palm of his hand.

Answer:

double ComputeGasVolume(double pressure, double temperature, double moles){

   double volume = moles*GAS_CONST*temperature/pressure;

    return volume;        

}

Explanation:

You may insert this function just before your main function.

Create a function called ComputeGasVolume that takes three parameters, pressure, temperature, and moles

Using the given formula, PV = nRT, calculate the volume (V = nRT/P), and return it.

Answer:

Assuming this is Python, I would do something like the following:

Explanation:

hourWage= float(input ("What is your hourly wage?: "))

regularHours= float(input ("How many regular hours did you work this week?: "))

overtimeHours= float(input ("How many overtime hours did you have this week?: "))

overtimeWage= (1.5*hourWage)

totalWeeklyPay= (hourWage*regularHours)+(overtimeHours*overtimeWage)

print= ("Your total weekly pay is: " ,totalWeeklyPay)

I hope this works!

Following are the program to calculate weeklyPay value:

Program Explanation:

Program:

Wage = float(input("Enter hourly wage: "))#defining a variable Wage that inputs float value

Hour = float(input("Enter total number of regular hours: "))#defining a variable Hour that inputs float value

Hours = float(input("Enter overtime hours: "))#defining a variable Hours that inputs float value

weeklyPay = (Wage*Hour) + (1.5*Wage*Hours)#defining a variable weeklyPay that calculates the values

print (weeklyPay)#defining a print method that prints weeklyPay value

Output:

Please find the attached file.

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Answer:Crisis-mapping

Explanation:

Answer:

Crisis Mapping

Explanation:

If my computer has 4 gigabytes of ram memory then I have 4e+9 bytes of memory.  I think-

Answer: That isn't a software problem, its a hardware problem. There is a difference between 12gb of ram versus 100 gb of HDD. Ram is temporary storage, you can not turn SSD or HDD storage into RAM. If you are a gamer, STEER AWAY FROM LAPTOPS, DO NOT BUY A GAMING LAPTOP. Either buy a DESKTOP (or build) or a console. They give more performance for the price and they are easily upgradable. Not many people can open up a laptop and put in more RAM because the hardware is incredibly small.

Answer:

#This is in Python

number1 = raw_input("Enter a number: ")

number2 = raw_input("Enter another number: ")

sum = float(number1) + float(number2)

print(sum)

Explanation:

Answer:

-128

Explanation:

[tex](151)_{10}[/tex]

We have to convert this decimal number into the binary number

[tex](10010111) _{2}[/tex]

Performing the 2's complement number so we have to subtract 1 from this

[tex]10010111 -1 \\=(10010110)_{2}[/tex]

Now to getting the original number we have to complement the previous number it means convert 1 ->0 and 0 -> 1

[tex](10010110)_{2} ---->(01101001)_{2}[/tex]

The previous number is converted binary to decimal we get ,

[tex](01101001)_{2}=(105) _{10}[/tex]

-105(According to the rule of 2's complement )

Similarly same process will apply on the [tex](214)_{10}[/tex]

We have to convert this decimal number into the binary number

[tex](11010110)_{2}[/tex]

Performing the 2's complement number so we have to subtract 1 from this

[tex]11010110 - 1 =(11010101)_{2}[/tex]

Now to getting the original number we have to complement the previous number it means convert 1 ->0 and 0 -> 1

[tex](11010101)_{2}---------> (00100101)_{2}[/tex]

The previous number is converted binary to decimal we get ,

[tex](00100101)_{2}------->(42)_{10}[/tex]

-42(According to the rule of 2's complement )

Therefore the result is

151 + 214

=(-105 + (-42)

=-147

Hence the -147 is smaller then -128 that is smaller 8 bit signed integer is Therefore result is : -128

Answer:

Linked lists and arrays are both linear data structures but while an array is a collection of items that can be accessed randomly, a linked list can be accessed sequentially.

A sparse matrix contains very few non-zero elements. For example;

_                        _

|  0   0   3  0  6    |

|   0   5   0  0  4   |

|   2   0   0  0  0   |

|_ 0   0   0  0  0 _|

In the implementation of a sparse matrix, the following are some of the pros and cons of using a linked list over an array;

PROS

i.  Linked lists are dynamic in nature and are readily flexible - they can expand and contract without having to allocate and/or de-allocated memory compared to an array where an initial size might need to be set and controlled almost manually. This makes it easy to store and remove elements from the sparse matrix.

ii. No memory wastage. Since the size of a linked list can grow or shrink at run time, there's no memory wastage as it adjusts depending on the number of items it wants to store. This is in contrast with arrays where you might have unallocated slots. Also, because the zeros of the sparse matrix need not be stored when using linked lists, memory is greatly conserved.

CONS

i. One of the biggest cons of linked lists is the difficulty in traversing items. With arrays, this is just of an order of 0(1) since the only requirement is the index of the item. With linked lists, traversal is sequential which means slow access time.

ii. Storage is another bottle neck when using linked lists in sparse matrix implementation. Each node item in a linked list contains other information that needs to be stored alongside the value such as the pointer to the next or previous item.

Answer:

constraint

Explanation:

Field constraint refers to a rule like a specific format or range of values that is enforced and that have to be reviewed for the information entered to be allowed in the field. According to this, the answer is that a field constraint is a property that must be met before an entry can be accepted into the field.

//Class header definition

public class TestEven {

   //Method main to test the method isEven

   public static void main(String args[ ] ) {

       //Test the method isEven using numbers 5 and 6 as arguments

       System.out.println(isEven(5));

       System.out.println(isEven(6));

   }

   //Method isEven

   //Method has a return type of boolean since it returns true or false.

   //Method has an int parameter

   public static boolean isEven(int number){

       //A number is even if its modulus with 2 gives zero

      if (number % 2 == 0){

           return true;

       }

       //Otherwise, the number is odd

       return false;

   }

}

====================================================

=========================================================

false

true

==========================================================

The above code has been written in Java. It contains comments explaining every part of the code. Please go through the comments in the code.

A sample output has also been provided. You can save the code as TestEven.java and run it on your machine.

Methods are collections of named program statements that are executed when called or evoked

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

import java.util.*;

public class Main {

   public static void main(String args[ ] ) {

       //This creates a Scanner Object

       Scanner input = new Scanner(System.in);

       //This gets input for the number

       int num = input.nextInt();

       //This calls the function

       System.out.println(isEven(num));

  }

  public static boolean isEven(int num){

      //This returns true, if num is even

      if (num % 2 == 0){

          return true;

      }

      //This returns false, if otherwise

      return false;

  }

}

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Answer:

True is the correct answer .

Explanation:

Key generation is the method that are used for the security purpose .The key generation is used in the encryption and decryption process that are totally depends type of the authentication  protocol.We can used the particular program to produce the key .

The key generation is used in the cryptography. We also symmetric and asymmetric key concept for the key generation .Authentication and Key Agreement is one of the authentication  protocol that are mainly used in the 3 g network that are depend on the key generation.

Therefore the given statement is true .

Answer:

No

Explanation:

The other websites provide very detailed information, when you search the same information that is mentioned at CDC website. The information related to causes and symptoms of brain injuries is similar on both the websites. The reliability of information provided on other websites is questioned. These websites provide a lot of information and it is sometimes time consuming to find the relevant information.

+41.50 = 0 10000100 01001100000000000000000  [single precision]

-72.125 = 1 10000000101 0010000010000000000000000000000000000000000000000000 [double precision]

(I) +41.50 using single precision

Follow the following steps:

(a) Single precision has 32 bits in total and is divided into three groups: sign (has 1 bit), an exponent (has 8 bits) and a mantissa (also called fraction, has 23 bits)

(b) Divide the number (41.50) into its whole and decimal parts:

Whole = 41

Decimal = 0.50

(c) Convert the whole part to binary:

2    |    41

2    |    20 r 1

2    |    10 r 0

2    |    5 r 0

2    |    2 r 1

2    |    1 r 0

     |    0 r 1

Reading upwards gives 41 = 101001₂

(d) Convert the decimal part to binary:

0.50 x 2 = 1.0  = 1 [number in front of decimal]

0.0 x 2 = 0.0 = 0  [number in front of decimal]

Reading downwards gives 0.5 = 10₂

(e) Put the two parts together as follows;

    101001.10₂

(f) Convert the result in (e) to its base 2 scientific notation:

Move the decimal to just before the leftmost bit as follows;

1.0100110

In doing so, we have moved over 5 numbers to the left. Therefore, the exponent is 5. Moving to the left gives a positive exponent while moving to the right gives a negative exponent.

Altogether we have;

1.0100110 x 2⁵

(g) Determine the sign bit of the number and display in binary: Since the number +41.50 is positive, the sign bit is 0.

(h) Determine the exponent bits.

Since this is a single precision conversion, the exponent bias is 127.

To get the exponent we add the exponent value from (e) to the exponent bias and get;

5 + 127 = 132

(i) Convert the exponent to binary:

2    |    132

2    |    66 r 0

2    |    33 r 0

2    |    16 r 1

2    |    8 r 0

2    |    4 r 0

2    |    2 r 0

2    |    1 r 0

     |    0 r 1

Reading upwards gives 132 = 10000100₂

(j) Determine the mantissa bits:

The mantissa is the rest of the number after the decimal of the base 2 scientific notation found in (f) above.

0100110 from 1.0100110 x 2⁵                  [Just remove the leftmost 1 and the decimal point]

(k) Combine the three parts: sign bit (1 bit), exponent bits (8 bits) and mantissa bits (23 bits)

sign bit = 0                [1 bit]

exponent bits = 10000100        [8 bits]

mantissa bits = 0100110        [7 out of 23 bits]

Then fill out the remaining part of the mantissa with zeros to make it 23 bits.

mantissa bits = 01001100000000000000000        

Putting all together we have

0 10000100 01001100000000000000000 as +41.50 in  a IEEE 754 single precision format.

(II) -72.125 using double precision

Follow the following steps:

(a) Double precision has 32 bits in total and is divided into three groups: sign (has 1 bit), an exponent (has 11 bits) and a mantissa (also called fraction, has 52 bits)

(b) Divide the number (72.125) into its whole and decimal parts:

Whole = 72

Decimal = 0.125

(c) Convert the whole part to binary:

2    |    72

2    |    36 r 0

2    |    18 r 0

2    |    9 r 0

2    |    4 r 1

2    |    2 r 0

2    |    1 r 0

     |    0 r 1

Reading upwards gives 72 = 1001000₂

(d) Convert the decimal part to binary:

0.125 x 2 = 0.25  = 0 [number in front of decimal]

0.25 x 2 = 0.50 = 0  [number in front of decimal]

0.50 x 2 = 1.00 = 1  [number in front of decimal]

0.00 x 2 = 0.00 = 0  [number in front of decimal]

Reading downwards gives 0.125 = 0010₂

(e) Put the two parts together as follows;

    1001000.0010₂

(f) Convert the result in (e) to its base 2 scientific notation:

Move the decimal to just before the leftmost bit as follows;

1.0010000010

In doing so, we have moved over 6 numbers to the left. Therefore, the exponent is 6. Moving to the left gives a positive exponent while moving to the right gives a negative exponent.

Altogether we have;

1.0010000010 x 2⁶

(g) Determine the sign bit of the number and display in binary: Since the number -72.125 is negative, the sign bit is 1.

(h) Determine the exponent bits.

Since this is a double precision conversion, the exponent bias is 1023.

To get the exponent we add the exponent value from (e) to the exponent bias and get;

6 + 1023 = 1029

(i) Convert the exponent to binary:

2    |    1029

2    |    514 r 1

2    |    257 r 0

2    |    128 r 1

2    |    64 r 0

2    |    32 r 0

2    |    16 r 0

2    |    8 r 0

2    |    4 r 0

2    |    2 r 0

2    |    1 r 0

     |    0 r 1

Reading upwards gives 1029 = 10000000101₂

(j) Determine the mantissa bits:

The mantissa is the rest of the number after the decimal of the base 2 scientific notation found in (f) above.

0010000010 from 1.0010000010 x 2⁶                  [Just remove the leftmost 1 and the decimal point]

(k) Combine the three parts: sign bit (1 bit), exponent bits (11 bits) and mantissa bits (52 bits)

sign bit = 1                [1 bit]

exponent bits = 10000000101    [11 bits]

mantissa bits = 0010000010        [10 out of 52 bits]

Then fill out the remaining part of the mantissa with zeros to make it 52 bits.

mantissa bits = 0010000010000000000000000000000000000000000000000000

Putting all together we have

1 10000000101 0010000010000000000000000000000000000000000000000000 as -72.125 in  a IEEE 754 double precision format.