Assume that a program consists of integer and floating-point instructions. 60% of the total execution time is spent on floating point instructions and the remaining 40% is on integer instructions. How much faster should we run the floating-point instructions to execute entire program 1.25 times faster

Answer:

<?php  

function word_count($string){   // function that takes a string a parameter and returns the number of words in that string

   $space = 0;   // this variable is used in order to detect space, new line and tab spaces in a string

   $words = 1; // this variable is used to identify word presence in string

   $include = $space;  //used to maintain the state of $words and $space

   $counter = 0;  // this counts the number of words in the string

   $i = 0;  //this moves through each character of the string

   while ($i < strlen($string)){  // iterates through every character of string until the last character of string is reached

       if ($string[$i] == " "||$string[$i] == "\n" || $string[$i] == "\t")  //if the space or new line or tab space is identified in the string

           $include = $space;  //set the state of include as space if the next character is a space newline or a tab space

       else if ($include == $space) {  //if next character is a word and current state i.e. $include holds $space

           $include = $words;   //  then set the state i.e. $include as $words

           ++$counter; } //increments i to move to next character at each iteration

       ++$i;  } //returns the number of words in a string

   return $counter; }

$str = "Hello, how are you ";  //sample string

echo "Words: " . word_count($str);  // calls word_count function to return number of words in str.

?>  

Explanation:

The program has a function word_count that accepts a string as its parameter and returns the number of words in the string. In the function there are three variables $space and $words and $include used as state variables. For instance $space identifies space, new line and tab spaces in the $string so it specifies that a space has occurred. $words identifies words in the $string so it specifies that a word has occurred. $include holds this state information. $i moves through every character of the $string and when a space occurs in the $string then the state $include is set to $space. When a word occurs then state $include is set to $words. $counter variable, which is used to count the number of words is incremented to 1 when previous state is $space and next character is a word character. Every time a word is seen in the string, this variable is incremented to 1 to keep track of number of words in the string. When $i reaches the end of the string then this loop stops and counter returns the number of words in the $string.

Answer:

Goals

Explanation:

Interestingly, the term goals refers to a perceived future a certain individual or group of individuals are hopeful for, or better still it could be an expectation of improved quality of worth or merit, excellence and importance; custom or ideals that people desire as an end, often shared within a group.

Remember, goals are desired end, achieved as a result of deliberate action or actions towards attaining it.

Answer:

Html tags are not case sensitive

It's in JavaScript that the tags are case sensitive

Answer:

True

Explanation:

It is risky to drive while you are on drugs!

Answer:

This program is written using Python Programming language,

The program doesn't make use of comments (See explanation section for line by line explanation)

Program starts here

print("Enter elements into the list. Enter 0 to stop")

newlist = []

b = float(input("User Input: "))

while not b==0:

    newlist.append(b)

    b = float(input("User Input: "))

newlist.sort()

print("Largest element is:", newlist[-1])

Explanation:

This line gives the user instruction on how to populate the list and how to stop

print("Enter elements into the list. Enter 0 to stop")

This line creates an empty list

newlist = []

This line enables the user to input numbers; float datatype was used to accommodate decimal numbers

b = float(input("User Input: "))

The italicized gets input from the user until s/he enters 0

while not b==0:

    newlist.append(b)

    b = int(input("User Input: "))

This line sorts the list in ascending order

newlist.sort()

The last element of the sorted list which is the largest element is printed using the next line

print("Largest element is:", newlist[-1])

Answer:

Explanation:

An Amazon Redshift data warehouse refers to a collection of computing resources that are known as nodes. These nodes are organized into a group called a cluster. In order to correctly replicate/rebuild this cluster in another region, the Architect needs to modify the Redshift cluster to take snapshots of the Amazon EBS volumes each day, sharing those snapshots with the other region. These snapshots will provide accurate and up-to-date information allowing for a correct rebuild of the Redshift cluster.

Answer:

VLOOKUP(A11,A5:B7,2,0)  is the correct answer to this question.

Explanation:

The VLOOKUP method contains a vertical lookup by scouring for worth in a table's first section and trying to return the significance in the throughout the situation within the same row. The VLOOKUP excel is a built-in function classified as a Lookup / see as.

According to the question:-

The formulation needed to enter is = VLOOKUP(A11, A5: B7,2,0)

The first "A11" here is the cell from which value is retrieved

The second "A5: B7" input is the range for the table where you need to lookup. 2 Is the number of the column from which the value is taken and 0 indicates the exact math

The VLOOKUP function is used to look up a value in a particular column.

The VLOOKUP formula to enter in cell B13 is: VLOOKUP(A11,A5:B7,2,0)

The syntax of a VLOOKUP function is:

VLOOKUP(lookup_value, cell_range, column_index, [return_value])

Where:

From the question, we have:

So, the VLOOKUP function would be: VLOOKUP(A11,A5:B7,2,0)

Read more about VLOOKUP function at:

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I wrote it in Python because it was quick so i hope this is helpful

Answer:

date = input('Enter Date: ')

split_date = date.split('/')

month = split_date[0]

day = split_date[1]

if month == '1':

   english_month = 'January'

   spanish_month = 'Enero'

elif month == '2':

   english_month = 'February'

   spanish_month = 'Febrero'

elif month == '3':

   english_month = 'March'

   spanish_month = 'Marzo'

elif month == '4':

   english_month = 'April'

   spanish_month = 'Abril'

elif month == '5':

   english_month = 'May'

   spanish_month = 'Mayo'

elif month == '6':

   english_month = 'June'

   spanish_month = 'Junio'

elif month == '7':

   english_month = 'July'

   spanish_month = 'Julio'

elif month == '8':

   english_month = 'August'

   spanish_month = 'Agosto'

elif month == '9':

   english_month = 'September'

   spanish_month = 'Septiembre'

elif month == '10':

   english_month = 'October'

   spanish_month = 'Octubre'

elif month == '11':

   english_month = 'November'

   spanish_month = 'Noviembre'

elif month == '12':

   english_month = 'December'

   spanish_month = 'Diciembre'

US_English = f'{english_month} {day}'

International_Spanish = f'{day} {spanish_month}'

print(f'US English Form: {US_English}')

print(f'International Spanish Form: {International_Spanish}')

Input:

3/5

Output:

US English Form: March 5

International Spanish Form: 5 Marzo

Explanation:

You start by taking input from the user then splitting that at the '/' so that we have the date and the month in separate variables. Then we have an if statement checking to see what month is given and when the month is detected it sets a Spanish variable and an English variable then prints it to the screen.

Hope this helps.

Answer: D.) LEFT

Explanation: LEFT is an excel function allows users to extract a specified number of characters starting from the left. The syntax goes thus :

=LEFT(text, [num_chars])

text: the original string in which characters are to be extracted.

num_chars : takes an integer, stating the number of characters to extract.

The proper function is also an excel function which sets the first character in each word to uppercase. The mid function is also used in text extraction starting from any position in the original string based on what is specified.

The LEN function is used to get the number or length of characters in a string.

Answer:

Using Python:

def displaySubMenu():

   print("[S]top – Press ‘S’ to stop.")

Using C++ programming language:

void displaySubMenu(){

cout<<"[S]top – Press ‘S’ to stop.";}

Explanation:

The function displaySubMenu() has a print statement that prints the following message when this function is called:

[S]top – Press 'S' to stop.

You can invoke this function simply by calling this function as:

displaySubMenu()

The function doesn't take any input from the user and just displays this message on output screen whenever this function is called.

In C++ you can simply call the function using following statement:

void main(){

displaySubMenu(); }

Answer:

Option (b) is the correct answer to this question.

Explanation:

AES is based on Rijndael Algorithm.

The Rijndael algorithm enables a choice of block sizes and key sizes. The choices are for each of 128, 192, or 256 bits. Once NIST implemented Rijndael for AES, it only specified one block size,128 bits, but maintained three major lengths of selection. IEEE 802.11I go a step and further limits when both the main size and length of the block for 128 bits. It simplifies deployment and relieves users during development from having to make yet again another decision.

Other options are incorrect because they are not related to the given scenario.

Answer:

C

Explanation:

Option A is used for line spacing.

Option B is used for right indent.

Option C is used for right paragraph alignment.

Option D is used for bullet points.

The button used for paragraph alignment would be option C.

Answer:

Here is the Python code.

import csv  

inputfile = input("Enter name of the file: ")

count = {}

with open(inputfile, 'r') as csvfile:

 csvfile = csv.reader(csvfile)

 for line in csvfile:

   for words in line:

     if words not in count.keys():

       count[words] = 1

     else:

         count[words] + 1

   print(count)

Explanation:

I will explain the code line by line.

import csv   here the css is imported in order to read the file using csv.reader() method

inputfile = input("Enter name of the file: ")  This statement takes the name of the input file from the user

count = {}  this is basically a dictionary which will store the words in the file and the number of times each word appears in the file.

with open(inputfile, 'r') as csvfile:  This statement opens the inputfile using open() method in read mode. This basically opens the input file as csv type

 csvfile = csv.reader(csvfile)  This statement uses csv.reader() method to read the csv file contents.

for line in csvfile:  This outer for loop iterates through each line of the file

for words in line:  This inner loop iterates through each word in the line

if words not in count.keys():  This if condition checks if the word is not in the dictionary already. The dictionary holds key value pair and keys() method returns a list of all the keys of dictionary

count[words] = 1  if the word is not present already then assign 1 to the count dictionary

co unt[words] + 1 if the word is already present in dictionary increment count of the words by 1. Suppose the input file contains the following words:

hello,cat,man,hey,dog,boy,Hello,man,cat,woman,dog,Cat,hey,boy

Then because of co unt[words] + 1 statement if the word appears more than once in the file, then it will not be counted. So the output will be:

{' cat': 1, ' man': 1, ' dog': 1, ' woman': 1, ' Hello': 1, ' hey': 1, ' boy': 1, 'hello': 1, ' Cat': 1}

But if you want the program to count those words also in the file that appear more than once, then change this co unt[words] + 1 statement to:  

count[words] = count[words] + 1

So if the word is already present in the file its frequency is increased by 1 by incrementing 1 to the count[words]. This will produce the following output:

{' Cat': 1, ' cat': 2, ' boy': 2, ' woman': 1, ' dog': 2, ' hey': 2, ' man': 2, ' Hello': 1, 'hello': 1}  

You can see that cat, boy, dog and hey appear twice in the file.                    

print(count) This statement prints the dictionary contents with words and their frequencies.

The program with its output is attached.

The program is an illustration of file manipulations.

File manipulations involve reading from and writing into files.

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

#This imports csv module

import csv  

#This initializes a dictionary

kounter = {}

#This gets input for the file name

fname = input("Filename: ")

#This opens and iterates through the file

with open(fname, 'r') as cfile:

   #This reads the csv file

   cfile = csv.reader(cfile)

   #This iterates through each line

   for line in cfile:

       #This iterates through each word on each line

       for words in line:

           #This counts the occurrence of each word

           if words not in kounter.keys():

               kounter[words] = 1

           else:

               kounter[words] + 1

#This prints the occurrence of each word

print(kounter)

Read more about similar programs at:

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Answer:

public static void printMultiples(int n, int max){

    for (int i=1; i<=max; i++){

        if(i%n == 0)

            System.out.println(i);

    }

}

Explanation:

Create a method called printMultiples that takes two parameters n and max

Inside the method, create a for loop that iterates from 1 to max. If i, a number between 1 and max, % n is equal to 0, that means the number is a multiple of n, print the number.

Complete Question:

A network security analyst received an alert about a potential malware threat on a user’s computer. What can the analyst review to get detailed information about this compromise? Check all that apply.

A. Logs.

B. Full Disk Encryption (FDE).

C. Binary whitelisting software.

D. Security Information and Event Management (SIEM) system.

Answer:

A. Logs.

D. Security Information and Event Management (SIEM) system.

Explanation:

If a network security analyst received an alert about a potential malware threat on a user’s computer. In order to get a detailed information about this compromise, the analyst should review both the logs and Security Information and Event Management (SIEM) system.

In Computer science, logs can be defined as records of events triggered by a user, operating system and other software applications running on a computer. Log files are used to gather information stored on a computer such as user activities, system performance and software program.

Security Information and Event Management (SIEM) system is the process of gathering and integration of all the logs generated by a computer from various software application, service, process, or security tool.

These logs collected through the SIEM are shown in a format that is readable by the security analyst and this help in real-time detection of threats.

Hence, logs and SIEM systems are important tools for network security analyst for detection of threats in real-time and event management functions.

The is_positive function should return True if the number received is positive, otherwise it returns None. Can you fill in the gaps to make that happen?

def is_positive(number):

       if  _____ :

           return _____

def is_positive(number):

   if (number > 0):

       return True

  else:

       return "None"

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

print(is_positive(6))

>> True

print(is_positive(-7))

>> None

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

The code above has been written in Python.

Now, let's explain each of the lines of the code;

Line 1: defines a function called is_positive which takes in a parameter number. i.e

def is_positive(number):

Line 2: checks if the number, supplied as parameter to the function, is positive. A number is positive if it is greater than zero. i.e

if (number > 0):

Line 3: returns a boolean value True if the number is positive. i.e

return True

Line 4: defines the beginning of the else block that is executed if the number is not positive. i.e

else:

Line 5: returns a string value "None" if the number is not positive. i.e

return "None"

All of these put together gives;

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

def is_positive(number):

   if (number > 0):

       return True

   else:

       return "None"

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

An example test of the code has also been given where the function was been called with an argument value of 6 and -7. The results were True and None respectively. i.e

print(is_positive(6))   = True

print(is_positive(-7))  = None

Following are the python program to check input number is positive or negative:

def is_positive(n):#defining the method is_positive that takes one variable in parameter

   if (n > 0):#defining if block that check input number is positive

       return True#return boolean value that is True

   else:#else block

      return "None"#return string value

n=int(input("Enter number: "))#defining n variable that input a number

print(is_positive(n))#using print method that calls and prints method return value

Output:

please find the attached file.

Program Explanation:

Find out more about the method here:

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Answer:

The definition including its given problem is outlined in the following segment on the clarification.

Explanation:

Answer:

False

Explanation:

Unless authorized by a manager. Only staff members are allowed in the store before and after normal store hours.

Answer:

The correct answer is

False

If you are not an employee you are not allowed in stores before opening hours or after closing time. The only times non-staff are allowed in the store is for purchasing of products during hours of operation.h

Hope this helps!

Answer:

Last

Explanation:

Routing is a term in engineering which involves the process of selecting a path for traffic in a network or across multiple networks. It is applicable in circuit-switched networks, such as the public switched telephone network (PSTN), and computer networks, such as the Internet. It is mostly used as a term for IP Routing.

Hence, in IP Routing, the first step is comparing the packet's destination IP address to all rows, followed by selecting the nest-match row. However, If no other row matches, the router will select the LAST row as its best match.

Answer:

This is written in C++

Check comments for explanations

Program starts here

#include<iostream>

#include<string>

using namespace std;

//The function get_ap_terms begins here

string get_ap_terms(int a, int d, int size_tn)

{  

// This line initializes the expected string to empty string

string result = "";

//The for iteration loops through the number of terms the function is expected to return

for(int i = 1; i<= size_tn;i++)

{

//This line checks if the loop is less than the number of  terms    

if(i < size_tn)

  {

//This string gets the current term of the progression

   result+=to_string(a)+ ", ";

//This line calculates the next term

   a+=d;  

  }

  else

  {

//This line calculates the last term

   result+=to_string(a);

  }

}

//This line returns the string containing the first n terms of the arithmetic progression

return result;

}

//The main function starts here

int main()

{

//This line declares the first term (a), the common difference (d) and the number of terms (size_tn)

int a,d,size_tn;

//This line prompts the user for the first term

cout<<"First Term: ";

//This line gets the first term

cin>>a;

//This line prompts the user for the common difference

cout<<"Common Difference: ";

//This line gets the common difference

cin>>d;

//This line prompts the user for number of terms

cout<<"Number of Terms: ";

//This line gets the number of terms

cin>>size_tn;

//This line calls the function to print the string containing the first n terms

cout<<get_ap_terms(a, d, size_tn);

return 0;

}

//Program ends here

Answer:

Number of + operation done by this algorithm is 60

Explanation:

i = 4

j = 3

k = 6

Now, let "n" be number of '+' operations

n = i × j + i × 2k

substituting the figures

n = 4 × 3 + 4 × (2 × 6)

n = 12 + 4 × 12

n = 12 + 48

n = 60

Answer:

i can't see some of the numbers

Explanation:

Answer:

In python, the statement can be written as:

if(special_num in special_list): print("Special Number")

Explanation:

We need to create a list with the name 'special_list' with some values and then check whether special_num is in the list or not using the membership operator.

Membership operator in python: in

Let us do it step by step in python:

special_list = ['1', '2', '3','4']      #A list with the values 1, 2, 3 and 4

special_num = input("Enter the number to be checked as special \t")

#Taking the input from the user in the variable special_num.

if(special_num in special_list): print("Special Number")

#Using the membership operator in to check whether it exists in the list or not.

Please refer to the image attached for the execution of above program.

So, the answer is:

In python, the statement can be written as:

if(special_num in special_list): print("Special Number")

Answer:

2. right below the application layer

Explanation:

TLS (Transport Layer Security) is an improved and more secured version of the SSL (Secure Socket Layer) used as cryptographic protocol for providing authentication and encryption over a network. It is initialized at the transport layer of the IP stack and finalized at the application layer. In other words, it is located between the transport and application layer of the Internet protocol stack. And this is necessary so that data received in the application layer from the transport layer are protected from start to end between these two layers.

Therefore, it is safe to say that the TLS is located right below the application layer.  

Explanation:

Remember, an absolute value is the non-negative value of a number in this case the integer.

First, using the abs() function. Here's an example:

# Some random integers

variableA = -308

variableB = 301

Second, # Get the absolute values of those integers

absA = abs(variableA)

absB = abs(variableB)

Next,

# Output the results

print("Absolute values of integers with `abs()`:")

print("|", variableA, "| = ", absA, sep="")

Finally,

Use abs(variableA-variableB):

In [1]: abs(-308-301)

Out[1]: 307

Answer:

d

Explanation:

If your computer freezes on a regular basis, and you have enough memory and that isn't causing a problem. You should install additional fans to cool the motherboard. The correct option is D.

Computer freezing means the computer is not running smoothly. It is causing concerns in opening any application or running software. It is also called computer hanging. The freezing can occur due to the heating of the motherboard. The addition of the fans would be good.

Freezing on the computer happens when the memories of the computer are full, or any virus has been installed on the computer. Hanging or freezing of computers can be avoided by emptying some data or installing an antivirus.

Thus, the correct option is D. Install additional fans to cool the motherboard.

To learn more about computer freezing, refer to the link:

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Answer:

C. The main method proceeds to the next statement following the t3.join(); statement

Explanation:

join() method allows the thread to wait for another thread and completes its execution. If the thread object is executing, then t3.join() will make that t is terminated before the program executes the instruction. Thread provides the method which allows one thread to another complete its execution. If t is a thread object then t.join() will make that t is terminated before the next instruction. There are three overloaded functions.

join()

join(long mills)

join(long millis, int Nanos)

If multiple threads call the join() methods, then overloading allows the programmer to specify the period. Join is dependent on the OS and will wait .

Answer:

C. ATA Secure Erase

D. Smash the USB drive

Explanation:

Zero fill utility is a specialized way of formatting a storage device particularly secondary storage such as hard disk, flash drive e.t.c. In this process, the disk contents are overwritten with zeros. Once this has been done, undoing is essentially hard but possible. In most cases, this might just mean that the data content is corrupt and as such might still be recovered, maybe not in its pure entirety.

Formatting the drive on another hand does not essentially mean cleaning the drive and wiping off data. It just means that operating systems cannot see those data contents anymore. They are still present in the drive and can be recovered.

ATA Secure Erase is actually a way of completely and permanently erasing the content in a drive. Once the function has been done, undoing is not possible. Both the data content and even the data management table will be completely gone.

Smashing the USB drive is the surest way of cleaning data as that will permanently destroy the working components of the drive such as the memory chip. And once that happens then there's no drive let alone its contents.

In the above case, those with good motor skills are often described as having good coordination.

A coordination skill is known to bee the ability of a person to look at many moving pieces and derive a plan for all the pieces to be put  together.

Therefore, In the above case, those with good motor skills are often described as having good coordination.

Learn more about good coordination from

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For vulnerable road users, the areas where roadways transition from one environment to another are the most dangerous areas. Thus the correct answer is C.

An environment is refers to surroundings in which all the living and nonliving objects exist to survive life. This includes humans, animals, plants, and other resources.

the areas where roadways transition from one environment to another are the most dangerous areas because here drivers first recognize an approaching change in the nature of the roadway and then reduce their speed as appropriate.

Therefore, option C is appropriate.

Learn more about the environment, here:

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Answer:

a. 2100

b. 2199

Explanation:

GIven that:

The file size = 1000 MB

The  payload size is  = 100 bytes

The negotiated window size is = 1000 bytes.

This implies that the sliding window can accommodate maximum number of 10 packets

The sender receives an ACK 1200 from the receiver.

Total byte of the file is :

1000 MB = 1024000000 bytes

a.

Sender receives an ACK 1200 from the receiver but still two packets are still unacknowledged

=1200 + 9 * 100

= 1200 +  900

= 2100

b. What is the last byte number that can be sent without an ACK being sent by the receiver?

b. Usually byte number starts from zero, in the first packet, the last byte will be 99 because it is in 1000th place.

Thus; the last byte number send is :

= 1200 + 10 *100 -1

= 1200 + 1000-1

= 1200 + 999

= 2199