Answer:
The output is:
Error: Vehicle is abstract and cannot be instantiated
Explanation:
The following statement is causing this error:
myVehicle = new Vehicle();
Here an instance of Vehicle is being created. The name of the instance is myVehicle. new keyword is used to create an object or instance of class like here the instance myVehicle of class Vehicle is being created.
This instance cannot be created because the Vehicle is an abstract class. As you can see this statement public abstract class Vehicle.
So Vehicle class is declared with abstract keyword which means that this is an abstract class and cannot be instantiated. So Vehicle class is an abstract class and abstract class can only be used as a base class for its derived classes. Vehicle just provides with the basic functionality that its sub or derived class like Car can implement.
This class can be extended or inherited but no instance can be created of this class, as the Car class is used to extend the functionality of Vehicle class. Now you can create instance of Car class but NOT of a Vehicle class because it is an abstract class.
What is the result of giving the which utility the name of a command that resides in a directory that is not in your search path
Answer and Explanation:
The result of providing the which utility the command name i.e not covered under the search path is as follows
The device that shows a notification that the command you are searching for is not in your query path's directory list. The utility in which no information is shown. Because the search path has always been about which utility therefore it would not be work.
Open the Undergrad Debt data in the Excel file. Nationally, on average, a college student last year graduated with $27,200 in debt with a historical standard deviation of $5,000. The file gives sample date from Arkansas.
Does Arkansas students have higher debt than the national average at alpha equal to 10?
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.
Write the definition of the function displaySubMenu that displays the following menu; this function doesn't collect the user's input; only display the following menu:
[S]top – Press 'S' to stop.
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(); }
Write an expression using membership operators that prints "Special number" if special_num is one of the special numbers stored in the list special_list
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")
In cell B13, create a formula using the VLOOKUP function that looks up the value from cell A11 in the range A5:B7, returns the value in column 2, and specifies an exact match.
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:
lookup_value represents the value to look upcell_range represents the cells to checkcolumn_index represents the column index[return_value] is an optional entry, and it represents the value that will be returned by the look up function.From the question, we have:
lookup_value = cell A11cell_range = cell A5 to B7column_index = 2[return_value] = 0So, the VLOOKUP function would be: VLOOKUP(A11,A5:B7,2,0)
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Two stations running TCP/IP are engaged in transferring a file. This file is 1000MB long, the payload size is 100 bytes, and the negotiated window size is 1000 bytes. The sender receives an ACK 1200 from the receiver.
Requried:
a. Which bytes will be sent next?
b. What is the last byte number that can be sent without an ACK being sent by the receiver?
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
If your computer freezes on a regular basis and you checked your hard drive and you have insufficient space you've not installed any software that could cause disruption you have recently added more around so you realize that you have enough memory and that isn't causing a problem what could you do to check next? A) Ensure that the computer is disconnected from the internet by removing any Ethernet cables. B) Use scandisk to ensure that the hard drive is not developing errors or bad sectors. C) Replace the CPU and RAM right away. D) Install additional fans to cool the motherboard.
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.
What is computer freezing?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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A Solutions Architect needs to build a resilient data warehouse using Amazon Redshift. The Architect needs to rebuild the Redshift cluster in another region. Which approach can the Architect take to address this requirement
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.
php Exercise 3: Function Write a function named word_count that accepts a string as its parameter and returns the number of words in the string. A word is a sequence of one or more non-space characters (any character other than ' '). For example, the call of word_count("hello, how are you?") should return 4. Constraints: • Do not use any data structures such as arrays to help you solve this problem. • Do not use the String function explode on this problem. • But you can declare as many simple variables like Integer, String, etc. as you like. Keep it simple.
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.
How many searches should you complete when looking up information using online references?
Answer:
c
Explanation:
Consider the following algorithm. x â 1 for i is in {1, 2, 3, 4} do for j is in {1, 2, 3} do x â x + x for k is in {1, 2, 3, 4, 5} do x â x + 1 x â x + 5 Count the number of + operations done by this algorithm.
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:
Which guideline should an employee use when taking notes for a report
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
James has a USB flash drive that he has used at work. The drive needs to be thrown away, but James wants to make sure that the data is no longer on the drive before he throws it away. What can James use to wipe the data clean?
a. Zero-fill utility
b. Format the drive
c. ATA Secure Erase
d. Smash the USB drive
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.
print_pattern() prints 5 characters. Call print_pattern() twice to print 10 characters. Example output: ***** ***** in python
Answer:
def print_pattern():
print("*****",end=" ")
print_pattern()
print_pattern()
All the protocol layers of the internet (Application, Transport. Network) were originally without any security. TLS is one of the security architectures added later. In the Internet protocol stack. TLS is located:________. 1. right above the application layer 2. right below the application layer 3. right below the transport layer 4. right above the IP layer
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.
What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative entity? Provide an example.
Answer:
The definition including its given problem is outlined in the following segment on the clarification.
Explanation:
Entity-relationship (ER) diagram describes how mechanical stored procedures are constructed and demonstrate the overarching representation of the situation. It also describes the connections between some of the entities of the framework and even the comparison with standard measurements.For something like an individual relationship structure, the normal representation of connections seems to be a diamond. Associative institutions have several to many partnerships to communicate with. It's indeed the verb throughout a diamond-shaped form that holds two organizations around each other. This verb is in fact an entity on its own, therefore it must be termed an associative entity.An illustration of such might be if a participant were to register for a class. Multiple individuals will be registered for several courses, and there have been many to several relationships; thus, the associative object will indeed register.Make a simple numeric calculator. It should prompt the user for three numbers. Then add the numbers together and divide by 2. Display the result. Your program must support numbers with decimals and not just integers. If the result is more than 6, display Your result is more that 6! 4.
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
all HTML tags are case sensitive, case insensitive and have to be written in capitals only
Answer:
Html tags are not case sensitive
It's in JavaScript that the tags are case sensitive
11. Which one of the following buttons is used for paragraph alignment?
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.
Which among the following enhances WS-Security to facilitate a mechanism for issuing, renewing, and validating security tokens?
a. WS-Trust
b. WS-SecureConversion
c. WS-SecurityPolicy
d. All of the mentioned
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.
Hence e the option A is correct. The WS security token service is a service based on the mechanisms of the key exchange.Learn more about the following enhances WS-Security to facilitate.
brainly.com/question/13171394.
The blank function returns to the first character or characters in a text string based on the number of characters specified??? A. PROPER B. MID C. LEN D. LEFT
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.
var name = prompt("Enter the name to print on your tee-shirt");
while (name.length > 12) {
name = prompt("Too long. Enter a name with fewer than 12 characters.");
}
alert("The name to be printed is " + name.toUpperCase());
What will happen if the user enters Willy Shakespeare at the first prompt?
a. The user will be prompted to enter a different name
b. The alert will display The name to be printed is " + name.toUpperCase()
c. The alert will display The name to be printed is WILLY SHAKESPEARE
d. The alert will display The name to be printed is WILLY SHAKES
Willy Shakespeare has 17 characters. It's higher than 12,so the output will be Too long. Enter a name with fewer than 12 characters.
Letter a.
Those with good motor skills are often described as having ...
A. good coordination.
B. poor coordination.
C. athletic coordination,
In the above case, those with good motor skills are often described as having good coordination.
What is 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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Rijndael, AES, CCMP are same as well as different. They are same in terms of how encryption is done and different in terms of whether each one is a protocol, algorithm or a standard.CCMP is both, a protocol and a standard, Rijndael is:_________ a) standard only b) an algorithm c) a communications protocol. d) patented by US Government
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.
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
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 list of lists below is meant to represent the money raised by a charity over multiple days. The inner lists represent each donation, and the outer list represents each day. Use a for loop to calculate the sum of all the numbers in this list of list of numbers, to print the total amount of money raised.
code given:hourly_donations_per_day = [[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]]
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:
In the above code, a list of the list is declared in which, it assigns the multiple values, in the inner lists it represents donation value and in the outer list it represents the day. In the next step, a variable "total_amount_of_money_raised" is declared that assigns a value 0, in the next step, multiple for loop is declared which is used to add list donation value and at the last print, the method is used to print its value.Complete the method, print Multiples(), that takes in a positive integer n, and another positive integer, max. Print out all the multiples of n that are less than or equal to max. Print each multiple on a separate line. For example, if the method is called with n
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.
You are scanning a network to ensure it is as secure as possible. You send a TCP probe packet to a host with a FIN flag and receive a RST/ACK response. What does this mean?
Answer:
Hello your question lacks the required options here are the options
A)This response means the port he is scanning is open.
B)The RST/ACK response means the port Fred is scanning is disabled.
C)This means the port he is scanning is half open.
D) This means that the port he is scanning on the host is closed
answer : This means that the port he is scanning on the host is closed ( D )
Explanation:
When you scan a network to ensure it is secure enough by sending a TCP probe to a host with a FIN flag and you receive a RST/ACK response it means that The port that is been scanned on the host is closed
A TCP scanning/probe involves sending a number of packets to each port that is scanned. when you Compare TCP scanning methods to other methods of scans, a TCP Connect scan is typically slow and methodical.
If you have taken any drugs, it's not safe to drive.
A. True
B. False
Answer:
True
Explanation:
It is risky to drive while you are on drugs!
Internally, a bin heap is typically implemented as a BST that has the additional ordering property that the minimum value is at the root (or the maximum value is at the root, if we chose to make the bin heap to be a max heap).
a) True
b) False
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.
So the binary heap is configured as a Binary Search Tree with the external organizing attribute that perhaps the mean price is in the root with maximum value .Therefore the given statement is true .