What is the value of the num_colors variable? var colors = ["red","blue","orange","yellow","green","brown","purple"]; num_colors = colors.length

1. He is sincere while making report bcz when he make report by heart it is definitely useful.

He is always remain alert bcz any mistake can influence his ratings or project importance

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:

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)

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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: 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:

Following are the code to this question:

hourly_donations_per_day = [ #declaring list of lists and assign values

[44, 33, 56, 27, 33, 25],

[12, 15, 22, 19, 21],

[36, 34, 32, 37, 28, 11, 35],

[20, 19, 29],

[22, 27, 21, 15, 26, 15]

]

total_amount_of_money_raised = 0#defining a variable and assign a values 0

for i in hourly_donations_per_day:#defining loop to count values donation  

       if isinstance(i,list): #using if block to add donation values

               for j in i:#defining loop for add list values

                   total_amount_of_money_raised += j #add all values in total_amount_of_money_raised variable

print(total_amount_of_money_raised) #print value

Output:

714

Explanation:

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.  

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.

Answer:

True is the correct answer to the given question .

Explanation:

Heap is the complete binary tree that meets the property of organizing the heap There are two types heap max heap and min heap .The value in the heap of every node is greater than or equal to its parent 's value or less then equal to the  parent with there dimension of the minimum value or the maximum value just at the root.

Therefore the given statement is true .

2. input in the hash algorithm

In a hash algorithm, a function called hash function (say H) is chosen to transform a variable sized input n, and return a fixed size string called the hash value (say h). i.e

H(n) => h

Comparing this to the birthday attacks;

i. the hash function is getting the people's birthdays - H,

ii. the input is each person in the group of people - n,

iii. the hash is the value of the birthday of each person - H(n).

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:

def print_pattern():

print("*****",end=" ")

print_pattern()

print_pattern()

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.

Answer:

I am writing a JAVA program:

import java.io.FileReader;  // class used for reading data from a file

import java.io.IOException;  //class used for handling exceptions

import java.io.PrintWriter;  // class used to printing or writing formatted data. It is used when the data to be written contains text and numbers

import java.util.Scanner;   // class used to take input from the user

public class Main  {  //start of the class

public static void main(String[] args)  {//start of main() function body

Scanner input = new Scanner(System.in);  //creates Scanner class object

System.out.print("Enter the input file name: ");  // prompts user to enter the input file name

String input_file = input.next();  //to  read and return the token i.e. input file name and store this into input_file String type variable

System.out.print("Enter the output file name: "); // prompts user to enter the output file name

String output_file = input.next();   /to  read and return the token i.e. output file name and store this into output_file String type variable

try   {/* try  defines a chunk of code to be tested for errors during the execute of this chunk. its a code block for reading from input file and writing to output file. This handles the exception if program cannot create or write to the file indicated. */

   FileReader inFile = new FileReader(input_file);  //creates object inFile of FileReader class to read the input_file contents

   Scanner scan = new Scanner(inFile);  //read and scans the input file

   PrintWriter outFile = new PrintWriter(output_file);  //creates object outFile of PrintWriter class to write to the output file. It is used to write output data in a readable text form.

   int count = 1;    //counts the line number      

   while (scan.hasNextLine())  {  //loop keeps checking for the next line in input file

    String lines = scan.nextLine();  // reads the entire line of the input file and stores that line contents in String lines

    outFile.println("/* " + count + " */ " + lines);  //each line represented with line number enclosed in /* */

    count++;  }   //increments the line number at each iteration    

    outFile.close();        }  //closes the output file after writing the contents from input file with each line of the input file enclosed in  /* */

catch (IOException e)  {  // catching the IOException and prints the following message if program cannot create input_file or write to the output_file

   System.out.println("Error processing file: " + e);    }     }   }

Explanation:

The program is well explained in the comments mentioned with each statement of the above program. The user is prompted to enter input and output file names. Then the program uses a while loop that scans through lines of the input file and count variable counts each line of input file. Then at each iteration the count variable counts a line of input file and line number of each line of the input file is enclosed in /* */ delimiters. The contents of input file, in which the line numbers of text lines of the input file are enclosed in /* */ delimiters, is written to the output file.

The screenshot of the program is attached along with the output file produces as a result of this program execution.

Answer:

wireless connection

Explanation:

key point worth noting : reduces some unnecessary cost

As the Head of IT unit your Head of Department, I will recommend that wireless connection should put in place. wireless connection will reduce cost of laying wires to different department of the Local Government Authority and also save record time that would have been used up during the installation.

Major benefits of wireless networking

1. Increased network coverage: wireless networks  can be used to reach  places in Local Government Authority office that are not accessible for wires and cables.

2. Improved Scalability: Wireless systems can be configured to meet the needs of specific departments of the Local Government Authority. These can be easily modified and scaled depending on each department’s needs.

3. Lower overall cost:Wireless Networking is relatively less costlier than wired Networks since no cables is required between the devices as well as lower long-term costs due to lesser maintenance fees since there is less equipment.

Answer:

c

Explanation:

Answer:

True

Explanation:

It is risky to drive while you are on drugs!

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:

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

Explanation:

Answer:

Html tags are not case sensitive

It's in JavaScript that the tags are case sensitive

Answer:

Parser is type of program that can determine that whether the start symbol can derive the program or not. Parser done carefully then parser is right otherwise it is wrong.

Explanation:

Recursive descent Parser example: It is also called the top down parser. In this parser, the symbol can be expand for whole program.

The recursive Descent and LL parser are called the top down parser.

Example:

E->E+T / T

T-T*F / F

F-> (E) / id

S -cAd

A- ab/a Input string is w= cad

Answer:

No programming language stated; I'll answer this question using Python.

(Please note that -> at the last line means indentation)

The program is as follows:

num1 = float(input("Number 1: "))

num2 = float(input("Number 2: "))

num3 = float(input("Number 3: "))

result = (num1 + num2 + num3)/2

print("Result: ",result)

if result > 6:

->print("Your result is more than 6!")

Explanation:

The first three lines prompt the user for input of 3 numbers (the number could be decimal, whole numbers, positive or negative numbers)

num1 = float(input("Number 1: "))

num2 = float(input("Number 2: "))

num3 = float(input("Number 3: "))

The next line sums up user input and divides the sum by 2

result = (num1 + num2 + num3)/2

The next line prints the calculated result in the previous line

print("Result: ",result)

The next line determines if the calculated result is more than 6; if yes, the associated print statement is executed

if result > 6:

->print("Your result is more than 6!")

Once again, please note that -> at the last line means indentation

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.

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.

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Answer:

Arkansas students have higher debt than the national average, $27,200.

Explanation:

The provided data is:

S = {24040, 19153, 26762, 31923, 31533, 34207, 14623, 24370, 31016}

In this case we need to test whether Arkansas students have higher debt than the national average at alpha equal to 0.10.

The hypothesis can be defined as follows:

H₀: Arkansas students does not have higher debt than the national average, i.e. μ ≤ $27,200.

Hₐ: Arkansas students have higher debt than the national average, i.e. μ > $27,200.

Compute the sample mean:

[tex]\bar x=\frac{1}{n}\sum X=\frac{1}{10}\times 213537=21353.70[/tex]

As the population standard deviation is provided, we will use a z-test for single mean.

Compute the test statistic value as follows:

[tex]z=\frac{\bar x-\mu}{\sigma/\sqrt{n}}=\frac{21353.70-27200}{5000/\sqrt{10}}=-3.70[/tex]

The test statistic value is -3.70.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected.

Compute the p-value for the test as follows:

 [tex]p-value=P(Z>-3.70)=P(Z<-3.70)=0.00011[/tex]

*Use a z-table for the probability.

The p-value of the test is 0.00011.

p-value = 0.00011 < α = 0.10

The null hypothesis will be rejected.

Thus, it can be concluded that Arkansas students have higher debt than the national average, $27,200.

Answer:

a. WS-Trust

Explanation:

WS-Trust can be defined as a WS-specification as well as OASIS standard that help to provides extensions to WS-Security, in order to facilitate a mechanism for issuing, renewing, as well as validating of security tokens which is why the aim and objectives of WS-Trust is to help and enable applications to construct trusted SOAP message exchanges.

Nevertheless WS-Trust enables the issuance as well as the dissemination of credentials within several and various trust domains.

A web service using the WS-Trust can be used for implementing the standards that encode the WS security to facilitate the mechanisms for issuing and reviewing the security tokens.

Learn more about the following enhances WS-Security to facilitate.

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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:

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.

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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

Answer:

hello the options to the question are missing here are the option

a. Trade in the computer for another computer that has wireless installed 4

b. Purchase a second computer that has wireless

c. Purchase a wireless expansion card and install it in your system

d. Purchase a USB wireless adapter and connect it to your PC by way of a USB  port

Answer : Purchase a wireless expansion card and install it in your system (c)

Purchase a USB wireless adapter and connect it to your PC by way of         a USB port ( d )

Explanation:

A wireless expansion card : A wireless Expansion card are added to a system via expansion slots. they are added to a system without a WiFi adapter and it is quite affordable

USB wireless adapter : A USB wireless adapter overrides the computer's built-in wireless function of a system and it gives a faster and more reliable connection via the USB ports.