Answer: Operate over existing telephone lines to carry voice, data, and video.
Explanation:
Digital subscriber line is a means of transferring high bandwidth data over a telephone line. Such data could be a voice call, graphics or video conferencing. DSL uses a user's existing land lines in a subscriber's home, allowing users to talk on a telephone line while also being connected to the Internet. In most cases, the DSL speed is a function of the distance between a user and a central station. The closer the station, the better its connectivity.
Scanner can be used to read tokens from a String literal Scanner can be used to read tokens from the console window (user input) Scanner can be used to read tokens from a file Scanner can be used to print tokens to the screen
Answer:
Scanner can be used to read tokens from the console window (user input)
Explanation:
Scanner is a class used in some programming languages to obtain inputs from users.
It is mostly well developed in Java programming language and used exclusively for taking and obtaining inputs.
Scanner takes input in primitive types such as doubles, floats and integers. IT also takes string inputs.
Here is a code snippet where the class scanner is used:
Scanner input = new Scanner (System.in)
The code above creates an object of the scanner class
Write a program that receives a series of numbers from the user and allows the user to press the enter key to indicate that he or she is finished providing inputs. After the user presses the enter key, the program should print:
The sum of the numbers
The average of the numbers
An example of the program input and output is shown below:
Enter a number or press Enter to quit: 1
Enter a number or press Enter to quit: 2
Enter a number or press Enter to quit: 3
Enter a number or press Enter to quit:
The sum is 6.0
The average is 2.0
BASE CODE
theSum = 0.0
data = input("Enter a number: ")
while data != "":
number = float(data)
theSum += number
data = input("Enter the next number: ")
print("The sum is", theSum)
Answer:
theSum = 0.0#defined in the question.
count=0 #modified code and it is used to intialize the value to count.
data = input("Enter a number: ") #defined in the question.
while data != "": #defined in the question.
number = float(data) #defined in the question.
theSum += number #defined in the question.
data = input("Enter the next number or press enter to quit ") #defined in the question "only some part is modified"
count=count+1#modified code and it is used to count the input to print the average.
print("The sum is", theSum)#defined in the question.
print("The average is", theSum/count) #modified code and it is used to print the average value.
output:
If the user inputs as 1,4 then the sum is 5 and the average is 2.5.Explanation:
The above code is written in the python language, in which some part of the code is taken from the question and some are added.The question has a code that tells the sum, but that code is not print the average value of the user input value.To find the average, some codes are added, in which one count variable which is initialized at the starting of the program and gets increased by 1, when the user gives the value. Then that count divides the sum to print the average.Final answer:
The program asks the user for a series of numbers and when the enter key is pressed without an input, it calculates and outputs the sum and average of the entered numbers. A counter variable is used to count the number of inputs which aids in calculating the average.
Explanation:
To receive a series of numbers from the user and calculate the sum and average when the user is finished by pressing the enter key, you can complete your base code as follows:
theSum = 0.0
count = 0
# Get initial input
data = input("Enter a number or press Enter to quit: ")
# Loop until user hits Enter without providing a number
while data != "":
number = float(data)
theSum += number
count += 1
data = input("Enter a number or press Enter to quit: ")
# Check to prevent division by zero when calculating average
if count > 0:
average = theSum / count
else:
average = 0
print("The sum is", theSum)
print("The average is", average)
This program initializes a counter to keep track of the number of inputs, asks the user for numbers in a loop, and adds them to the sum. It also increments the counter by 1 for each valid input. After the loop, if the count is greater than zero, it calculates the average; otherwise, it sets the average to zero to handle edge cases where no number was entered. Finally, it prints the sum and average of the entered numbers.
Which of the following is true about binary and linear searches? A linear search iterates through the entire array one by one while a binary search repeatedly divides in half a portion of the array that could contain the item. In general, a binary search is faster than a linear search. A binary search always begins at the first element of an array. A linear search always begins at the middle element of an array
Answer:
1) A linear search iterates through the entire array one by one while a binary search repeatedly divides in half a portion of the array that could contain the item.
2) In general, a binary search is faster than a linear search.
Explanation:
The options that are true about binary and linear searches are;
A) A linear search iterates through the entire array one by one while a binary search repeatedly divides in half a portion of the array that could contain the item.
B) In general, a binary search is faster than a linear search.
A linear search is also called sequential search in computer operations and it is defined as a method used to locate an element inside a list. The way this search is done is that It checks each element of the list in a sequential manner until it finds a match or till the whole list has been searched. Whereas, binary search is also called half-interval search or logarithmic search and it is defined as a method of searching algorithms to locate the position of a target value within a well organized array. This means that binary search is used to compare the target value in relation to the middle element of the sorted array.In conclusion, looking at the options the only ones that correspond with the terms binary and linear searches are options A and B.
Read more about binary and linear searches at; https://brainly.com/question/20411780
In this exercise, you will create a couple of helper methods for ArrayLists in a class called ArrayListMethods.
Create three static methods:
print- This method takes an ArrayList as a parameter, and simply prints each value of the ArrayList on a separate line in the console.
condense- This method takes an ArrayList as a parameter, and condenses the ArrayList into half the amount of values. While traversing, this method will take the existing value at the index and add the index following to the existing value. For example, if we had an ArrayList that consisted of Strings ["0", "1", "2", "3"], the ArrayListMethods.condense(["0", "1", "2", "3"]) would alter the ArrayList to be ["01", "23"].
duplicate- This method takes an ArrayList and duplicates the value of the index at the position index + 1. As a result, ArrayListMethods.duplicate(["01", "23"] would be ["01", "01", "23", "23"].
If done correctly, the methods should work in the ArrayListMethodsTester file.
[ArrayListMethodsTester.java]
import java.util.ArrayList;
public class ArrayListMethodsTester
{
public static void main(String[] args)
{
ArrayList stringArray = new ArrayList();
stringArray.add("This");
stringArray.add("is");
stringArray.add("an");
stringArray.add("ArrayList");
stringArray.add("of");
stringArray.add("Strings");
ArrayListMethods.print(stringArray);
System.out.println("\nArrayList is condensing:");
ArrayListMethods.condense(stringArray);
ArrayListMethods.print(stringArray);
System.out.println("\nArrayList is duplicating:");
ArrayListMethods.duplicate(stringArray);
ArrayListMethods.print(stringArray);
}
}
[ArrayListMethods.java]
import java.util.ArrayList;
public class ArrayListMethods
{
}
Final answer:
The student needs to implement three methods in the ArrayListMethods class: print, condense, and duplicate. Each method manipulates an ArrayList in different ways, such as printing all elements, condensing the list to half the size by combining elements, and duplicating each element in the original list.
Explanation:
To complete the ArrayListMethods class, start by importing the java.util.ArrayList package. Then, define each method with the appropriate logic. For example, your print method should iterate through the ArrayList, printing each element.
ArrayListMethods.java
import java.util.ArrayList;
public class ArrayListMethods {
public static void print(ArrayList list) {
for (String element : list) {
System.out.println(element);
}
}
public static void condense(ArrayList list) {
for (int i = 0; i < list.size() - 1; i++) {
list.set(i, list.get(i) + list.get(i + 1));
list.remove(i + 1);
}
}
public static void duplicate(ArrayList list) {
for (int i = 0; i < list.size(); i += 2) {
list.add(i + 1, list.get(i));
}
}
}
The condense method reduces the size of the ArrayList by half by merging adjacent elements, while the duplicate method doubles the size of the ArrayList by duplicating each element.
Your customer, Maggie, wants to buy a gaming PC, and she specifically mentions that she wants an Intel CPU and intends to overclock the CPU. How can you identify which Intel CPUs are capable of overclocking?
Answer:
Intel produces a series of unlocked CPU's that can be overclocked. These CPUs are from the "K" or "X" series. Example: Intel Core i9-9900K, Intel Core i9-10940X.
These are the few things that are to be kept in mind while overclocking:
-Motherboard: Motherboard should support overclocking. Example: Intel Z series, most AMD motherboards.
-Cooler: Boosting the clock speed increases the temperature. The cooler has to be upgraded to keep the temperatures low. Example: Water-cooled. Also, the heat sink has to be checked if it's working properly.
-Be ready to test your system in BIOS. Make sure the temperature, voltage, memory speed is stable for the set clock speed.
Explanation:
You have been given the job of creating a new order processing system for the Yummy Fruit CompanyTM. The system reads pricing information for the various delicious varieties of fruit stocked by YFC, and then processes invoices from customers, determining the total amount for each invoice based on the type and quantity of fruit for each line item in the invoice. The program input starts with the pricing information. Each fruit price (single quantity) is specified on a single line, with the fruit name followed by the price. You can assume that each fruit name is a single word consisting of alphabetic characters (A–Z and a–z). You can also assume that prices will have exactly two decimal places after the decimal point. Fruit names and prices are separated by a single space character. The list of fruit prices is terminated by a single line consisting of the text END_PRICES. After the fruit prices, there will be one or more invoices. Each invoice consists of a series of line items. A line item is a fruit name followed by an integer quantity, with the fruit name and quantity separated by a single space. You can assume that no line item will specify a fruit name that is not specified in the fruit prices. Each invoice is terminated by a line consisting of the text END_INVOICE. As a special case, if a line with the text QUIT appears instead of the beginning of an invoice, the program should exit immediately. The overall input will always be terminated by a QUIT line. (5 points)
Answer:
Invoice.java
import java.util.*;
public class Invoice {
static final String endPrices = "END_PRICES";
static final String endInvoice = "END_INVOICE";
static final String quit = "QUIT";
public static void main(String... args) {
Scanner sc = new Scanner(System.in);
//HashMap to store fruit name as key and price as value
Map<String, Float> fruits = new HashMap<>();
//Loop until input is not "END_PRICES"
while (true){
String input = sc.next();
//Come out of loop if input is "END_PRICES"
if(input.equals(endPrices))
break;
float price = Float.parseFloat(sc.next());
//add fruit to hash map
fruits.put(input, price);
}
//ArrayList to store total cost of each invoice
List<Float> totalList = new ArrayList<>();
Float total = 0f;
//loop until input becomes "QUIT"
while (true){
String input = sc.next();
//Break out of the loop if input is "QUIT"
if(input.equals(quit)){
break;
}
//Add total price of the invoice to array list and set total to "0f" to store total of next invoice
if(input.equals(endInvoice)){
totalList.add(total);
total = 0f;
continue;
}
int quantity = sc.nextInt();
total += (fruits.get(input)*quantity);
}
//Iterate through all objects in the total Array List and print them
Iterator itr = totalList.iterator();
while (itr.hasNext()){
System.out.printf("Total: %.2f \n", itr.next());
}
}
}
// This program accepts any number of purchase prices// and computes state sales tax as 6% of the value// and city sales tax as 2% of the value// Modify the program so that the user enters// the two tax rates// at the start of the programstartDeclarationsnum pricenum STATE_TAX_RATE = 0.06num CITY_TAX_RATE = 0.02num totalTaxnum totalstartUp()while price not equal to 0mainLoop()endwhilefinishUp()stopstartUp()output "Enter a price or 0 to quit"input pricereturnmainLoop()totalTax = price * STATE_TAX_RATE + price * CITY_TAX_RATEtotal = price + totalTaxoutput "Price is " , price, " and total tax is ", totalTaxoutput "Total is ", totaloutput "Enter a price or 0 to quit"input pricereturnfinishUp()output "End of program"return
Answer:
Hi there! This is a good question that tests the basics of loops and user input as well as constants and methods. For the sake of simplicity, I have implemented the program in Python. Please find the implementation of this answer below.
Explanation:
Simply save the below code in a file called sales_tax_value.py and run it with python 2.0. If using Python 3.0 + then you'll need to change the line:
"price = raw_input("Enter a price or 0 to quit: ");"
to
"price = input("Enter a price or 0 to quit: ");
sales_tax_value.py
def calculate_total(price):
totalTax = price * STATE_TAX_RATE + price * CITY_TAX_RATE;
total = price + totalTax;
return total;
pricenum = -1;
price = pricenum;
STATE_TAX_RATE = 0.06;
CITY_TAX_RATE = 0.02;
while price != 0:
price = raw_input("Enter a price or 0 to quit: ");
try:
price = int(price);
print(calculate_total(price));
except ValueError:
print("Invalid input!");
price = -1;
Question:
// This program accepts any number of purchase prices
// and computes state sales tax as 6% of the value
// and city sales tax as 2% of the value
//Modify the program so that the user enters
// the two tax rates
// at the start of the program
start
Declarations
num price
num STATE_TAX_RATE = 0.06
num CITY_TAX_RATE = 0.02
num totalTax
num total
startUp()
while price not equal to 0
mainLoop()
endwhile
finishUp()
stopstartUp()
output "Enter a price or 0 to quit"
input price
returnmain
Loop()
totalTax = price * STATE_TAX_RATE + price * CITY_TAX_RATE
total = price + totalTax
output "Price is " , price, " and total tax is ", totalTaxoutput "Total is ", total
output "Enter a price or 0 to quit"
input price
return finishUp()
output "End of program"
return
Answer
Modified Program below
// This program accepts any number of purchase prices
// and computes state sales tax as 6% of the value
// and city sales tax as 2% of the value
//Modify the program so that the user enters
// the two tax rates
// at the start of the program
start
Declarations
num price
num STATE_TAX_RATE
num CITY_TAX_RATE
num totalTax
num total
input STATE_TAX_RATE
input CITY_TAX_RATE
startUp()
while price not equal to 0
mainLoop()
endwhile
finishUp()
stopstartUp()
output "Enter a price or 0 to quit"
input price
returnmain
Loop()
totalTax = price * STATE_TAX_RATE + price * CITY_TAX_RATE
total = price + totalTax
output "Price is " , price, " and total tax is ", totalTaxoutput "Total is ", total
output "Enter a price or 0 to quit"
input price
return finishUp()
output "End of program"
return
In Cybersecurity terminology, a risk is defined as ________. Select one: a. A weakness that threatens the confidentiality, integrity, or availability of data b. Something or someone that can damage, disrupt, or destroy an asset c. Estimated cost, loss, or damage that can result from an exploit d. The probability of a threat exploiting a vulnerability
Answer:
The probability of a threat exploiting a vulnerability and the resulting cost
Explanation:
The whole idea of IT security is to protect our data from bad things. Risk in cyber security is the potential to harm people, organizations and IT equipment. It is the probability that a particular threat will occur and as result, leave a system vulnerable.
Use a correlated subquery to return one row per customer, representing the customer’s oldest order (the one with the earliest date). Each row should include these three columns: email_address, order_id, and order_date.
CUSTOMERS TABLE: CUSTOMER_ID, EMAIL_ADDRESS, PASSWORD, FIRST_NAME, LAST_NAME, SHIPPING_ADDRESS_ID, BILLING_ADDRESS_ID
ORDERS TABLE: ORDER_ID, CUSTOMER_ID, ORDER_DATE, SHIP_AMOUNT, TAX_AMOUNT, SHIP_DATE_SHIP_ADDRESS_INFO, CARD_TYPE, CARD_NUMBER, CARD_EXPIRES, BILLING_ADDRESS_ID
Final answer:
To provide each customer's oldest order, a SQL query with a correlated subquery is used. This query joins the CUSTOMERS and ORDERS tables and matches the earliest order_date for each customer.
Explanation:
To find each customer's oldest order using a correlated subquery, you would need to join the CUSTOMERS table with the ORDERS table based on the CUSTOMER_ID and then compare ORDER_DATEs. The query will return one row per customer containing their email_address, order_id, and order_date for the oldest order. Here is an example of how that SQL query may look:
SELECT c.EMAIL_ADDRESS, o.ORDER_ID, o.ORDER_DATE FROM CUSTOMERS c JOIN ORDERS o ON c.CUSTOMER_ID = o.CUSTOMER_ID WHERE o.ORDER_DATE = ( SELECT MIN(sub_o.ORDER_DATE) FROM ORDERS sub_o WHERE sub_o.CUSTOMER_ID = c.CUSTOMER_ID )
In this correlated subquery, 'sub_o' is an alias for the ORDERS table and is used to retrieve the minimum ORDER_DATE (the earliest) for each customer by comparing it with the ORDER_DATE in the outer query.
A bug was discovered in Canvas where the website crashes if 2 or more students are writing a discussion post at the same time. It's the weekend and Canvas support is unavailable. The entire class needs to submit a discussion post but the system keeps crashing. Use your creativity and implement a system that ensures only one student is writing a discussion post at any given time. Describe in detail which tools, communication methods, and safeguards are used to ensure the following:
Guarantee mutual exclusion: Only one student may be writing in canvas at any given time.
Prevent lockout: A student not attempting to write a post must not prevent other students from writing a post.
Prevent starvation: A student must not be able to repeatedly come back and edit their post while other students are waiting to write.
Prevent deadlock: Multiple students trying to write a post at the same time must not block each other indefinitely.
Final answer:
To ensure exclusive writing in Canvas, a system can be implemented using locks, semaphores, timeouts, fair scheduling, and a deadlock prevention mechanism.
Explanation:
In order to ensure mutual exclusion when writing a discussion post in Canvas, a system utilizing locks and semaphores can be implemented. Each student attempting to write a post will need to acquire a lock, and only one lock is available at a time, preventing multiple students from writing simultaneously.
To prevent lockout, a timeout period can be set. If a student doesn't actively write for a certain duration, their lock is released, allowing other students to access the system.
To prevent starvation, a fair scheduling algorithm can be employed to ensure that each student gets a turn to write without being able to monopolize the system. Additionally, to prevent deadlock, students could be required to release the lock if they are unable to write within a reasonable time frame.
Write a program that prompts the user to enter two characters and display the corresponding major and year status. The first character indicates the major. And the second character is a number character 1, 2, 3, 4, which indicates whether a student is a freshman, sophomore, junior, or senior. We consider only the following majors:
B (or b): Biology
C (or c): Computer Science
I (or i): Information Technology and Systems
Note that your program needs to let the user know if the major or year is invalid. Also, your program should be case-insensitive: your program should tell "Biology" either user type ‘b’ or ‘B’.
Here are three sample runs:
Sample 1:
Enter two characters: i3
Information Technology and Systems
Junior
Sample 2:
Enter two characters: B5
Biology
Invalid year status
Sample 3:
Enter two characters: t2
Invalid major
Sophomore
What to deliver?
Your .java file including:
1. (Code: 5 points, Comments: 3 points) Your code with other appropriate comments.
2. (2 points) Four sample runs with the following four input:
(1) i3
(2) T2
(3) c2
(4) F0
Note that you need to run your program 4 times. Each time you run it, copy and paste the program output to the top of your program. After you finished these 4 runs, comment out the output you pasted so that you program would continue to run without any issue.
Answer:
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Please enter two characters: "); String inputStr = input.nextLine(); if(inputStr.charAt(0) == 'B' || inputStr.charAt(0) == 'b'){ System.out.println("Biology"); } else if(inputStr.charAt(0) == 'C' || inputStr.charAt(0)== 'c'){ System.out.println("Computer Science"); } else if(inputStr.charAt(0) == 'I' || inputStr.charAt(0) == 'i') { System.out.println("Information Technology and Systems"); } else{ System.out.println("Invalid major"); } int num = Character.getNumericValue(inputStr.charAt(1)); if(num >= 1 && num <= 4){ switch (num){ case 1: System.out.println("freshman"); break; case 2: System.out.println("sophomore"); break; case 3: System.out.println("junior"); break; case 4: System.out.println("senior"); break; } } else{ System.out.println("Invalid year status"); } } }Explanation:
The code consists of two main parts. The part 1 is to validate the input major and print out the major according to the input character (Line 10 -22). If the input character is not matched with the target letters, a message invalid major will be displayed.
The part 2 is to validate the year status to make sure it only fall within the range of 1-4 (Line 26 -45). If within the range, the program will display the year major accordingly. If not a message invalid year status will be displayed.
A foreign exchange student brought his desktop computer from his home in Europe to the United States. He brought a power adapter so that the power cord would plug into the power outlet. He tried turning on his computer, but it wouldn't power on. What is likely the problem
Answer:
Desktop computer is probably single-voltage
Explanation:
The problem is most likely as a result of voltage difference. He have to get a dual-voltage switch that can accept both 110-120V and 220-240V. As the voltage of the the United States will most likely be different from the voltage in his home country. Or get a power adapter (single voltage) that suits the voltage of the US.
Which of the following problems is least likely to be solved through grid computing? Financial risk modeling Gene analysis Linear problems Parallel problems Manufacturing simulation
Answer:
Linear problems
Explanation:Grid computing is the term used in Information technology, Computer programming and Computer networks to describe the interconnection of different Computer resources in order to achieve certain specified goal. GRID COMPUTING ALLOWS COMPUTER RESOURCES TO WOK AS A SINGLE UNIT.
Grid computing can be used to solve various issues connected with the use of Computer resources such as Financial risk modelling,Gene analysis etc but least likely to be used to solve Linear problems.
A company has a custom object named Warehouse. Each Warehouse record has a distinct record owner, and is related to a parent Account in Salesforce. Which kind of relationship would a developer use to relate the Account to the Warehouse?
Answer:
Lookup.
Explanation:
Lookup is the relationship that developer would use to relate the Account to the Warehouse.
Suppose that you need to access a data file named "students.txt" to hold student names and GPAs. If the user needs to look at the information in the file, which command could be used to open this file?
Answer:
f = open('students.txt', 'r')
Explanation:
In the computing world, a command is an instruction to a computer program to execute a particular task. These instructions might be issued via a command-line interface, such as a shell program, or as a input to a network service as a component of a network protocol, or can be instructed as an event in a graphical user interface activated by the respective user selecting an option in a menu.
the f = open('students.txt', 'r') command line would be used to open a file named "students.txt", There are also various other types of commands for executing different task, for example:
1. ASSOC for Fix File Associations
2. FC for File Compare
3. IPCONFIG for IP Configuration
4. NETSTAT for Network Statistics
5. PING for Send Test Packets
6. TRACERT for Trace Route
7. POWERCFG for Power Configuration
e.t.c.
The variable most_recent_novel is associated with a dictionary that maps the names of novelists to their most recently published novels. Write a statement that replaces the value "Harry Potter and the Half-Blood Prince" with the value "Harry Potter and the Deathly Hallows" for the key "J.K. Rawling".
Final answer:
To update the most recent novel of J.K. Rowling in the 'most_recent_novel' dictionary, assign the new novel title to the key 'J.K. Rowling'. Be sure to correct the author's name if it was misspelled in your dictionary.
Explanation:
The student's question involves updating a value within a dictionary in Python. If most_recent_novel is your dictionary and you want to update the novel associated with the novelist J.K. Rowling (correct spelling), you can do this by assigning a new value to the key representing the novelist. Here's how you can write the statement:
most_recent_novel['J.K. Rowling'] = 'Harry Potter and the Deathly Hallows'
Note that the spelling of J.K. Rowling's name is incorrect in the question. It's important to use the correct key when updating the dictionary value. Assuming 'J.K. Rawling' was a typo, the correct key is 'J.K. Rowling'.
Consider a multi-level computer interpreting all levels where:
all Level 1 instructions are converted to 10 Level 0 instructions; all Level 2 instructions are converted to 8 Level 1 instructions; all Level 3 instructions are converted to 5 Level 2 instructions; all Level 4 instructions are converted to 5 Level 3 instructions; and all Level 5 instructions are converted to 5 Level 4 instructions.
If a Level 0 instruction takes 29.1 ns to fetch, decode, and execute, how many microseconds does it take to execute an instruction on Level 5?
Answer:
Level 5 = 291 ms
Explanation:
Given Data:
Level 1 = 10 X Level 0 Instructions
Level 2 = 8 x Level 1 Instructions
Level 3 = 5 x Level 2 Instructions
Level 4 = 5 x Level 3 Instructions
Level 5 = 5 x Level 4 Instructions
Level 0 execution time = 29.1 ns
To Find:
Level 5 Execution Time = ?
Solution:
Put value of Level 1 in Equation of Level 2
Level 2 = 8 x 10 Level 0 = 80 x Level 0
Put value of Level 2 in Equation of Level 3
Level 3 = 5 x 80 x Level 0 = 400 x Level 0
Put value of Level 3 in Equation of Level 4
Level 4 = 5 x 400 x Level 0 = 2000 x Level 0
Put value of Level 4 in Equation of Level 5
Level 5 = 5 x 2000 x Level 0 = 10,000 x Level 0
So, Level 5 have total of 10,000 Level 0 Instruction. Each level 0 Instruction takes 29.1 ns time to execute. So, Level 5 will Take
Level 5 = 10,000 x 29.1 ns
= 2,91,000 ns
Level 5 = 291 ms
which of these is an example of an open source software
java
prolog
thunderbird
internet explorer
Answer:
Thunderbird
Explanation:
When we talk about open source software, we are talking about software that is free to download and its source code repository is made available and public to its users. Open source code can be modified and distributed with the users’ rights if they want to. Thunderbird is an example of open source developed by the Mozilla foundation. All known web browsers like Chromium and Safari are open source apart from Internet Explorer. Internet Explorer has remained closed source for a long time now.
1.What is the ITIL? A.A set of process-oriented best practices B.A group of metrics that govern the program C.Focuses on value delivery D.All of the above
Information Technology Infrastructure Library (ITIL) is
A set of process-oriented best practicesA group of metrics that govern the programFocuses on value deliveryOption D- All of the above
Explanation:
The process ITIL can be defined as a set of well-defined practices for the IT service management which takes concerns on aligning the IT services based on the requirements of the business.
This describes the tasks, procedures, checklists and processes that are specifically not for organization or technology but can be adapted by the business entity towards the delivering-value, strategy or handling a lower competency level.
ITIL process was developed around as a process model-based view of managing and controling the operations of the organization which is credited to W. Edwards Deming and his plan-do-chec-act (PDCA) cycle.
You are given a string consisting of parenthesis style characters ( ) [ ] and { }. A string of this type is said to be correct if: (a) It is an empty string. (b) If string A is correct and string B is correct then string AB is correct. (c) If A is correct then (A), [A] and {A} are all correct. You are to write a program that takes as input from the keyboard a series of strings of this type that can be of any length. The first line of input will contain a single integer n telling you how many strings you will be testing. Following that integer will be n lines (each ending in a new line character) that represent the strings you are supposed to test with one string per line. Your program should output Yes if a given string is correct and No otherwise. For example if the user types the following as input 3 ([]) (([{}]))) ([()[]()])() Then your program should give the following output: Yes No Yes You will note that if you do your program correctly there is no prompt for data and the yes and no answers will be interspersed with your input data when you enter it manually. The following would be a more accurate representation of what you see on the screen when you cut and paste the input into your program. 3 ([]) Yes (([{}]))) No ([()[]()])() Yes You may find it useful to use a text file for testing your code so that you do not have to keep retyping the tests. You can do this from the command line by typing the name of the executable file followed by a less than sign and the name of your file. For example, if my executable is named day7 then I could type: day7 < input.txt This would redirect standard input so that the input instead comes from the file named input.txt. You should note that the input.txt file needs to be in the same directory as your executable file for the above command to work. Alternatively you can give the complete path information for the input file. You may not assume anything about the size of the test strings coming in. In fact, some of the test strings may be hundreds of thousands of characters long… COMP1020 Day 7 Daily Adams Summer 2016 How do you solve it? The trick to this problem is realizing that our stack interface can be used to solve the problem. One way to approach the problem is to read in a character, if it is a left marker then push it onto the stack. If it is a right marker then check the top of the stack (if it exists), if it is the correct left marker then pop it out and continue testing the string. If you encounter a right marker and the top of the stack is not the left hand version of the marker you just picked up or the stack is empty then you can determine that the string is not correct, clear the stack and go on to the next example. If you finish a whole string (encounter a new line) without encountering a problem then you can determine that the input string is correct. You should submit your program to an online checker that will test it for a small set of input values by going to uva.onlinejudge.org, making an account, and submitting your solution as a solution to problem 673. Even though the problem I have given you is a bit harder than the problem given there, your solution to this problem should have no problem solving their version of problem 673 that they have on the site. Submit your main.c and your stack.c, stack.h and any other support files you need along with a text file containing a copy of the email you get from the UVA online judge. Your stack.c implementation file should contain an implementation for the stack that can hold characters instead of integers and should use a linked list implementation of the stack.
The C program uses a stack to check if a series of input strings with parentheses, brackets, and braces are correctly formatted. It reads the number of strings, processes each string, and outputs "Yes" if the expression is correct and "No" otherwise. The stack is employed to keep track of opening symbols and ensure matching with closing symbols.
Below is a simple C program that checks whether a series of strings, representing expressions with parentheses, brackets, and braces, are correctly formatted or not. The program uses a stack data structure to keep track of the opening symbols and checks for matching closing symbols.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Define the stack structure
typedef struct {
char data[100000]; // Assuming a maximum string length of 100,000 characters
int top;
} Stack;
// Function to initialize the stack
void initializeStack(Stack *stack) {
stack->top = -1;
}
// Function to push a character onto the stack
void push(Stack *stack, char ch) {
stack->data[++stack->top] = ch;
}
// Function to pop a character from the stack
char pop(Stack *stack) {
return stack->data[stack->top--];
}
// Function to check if the expression is correct
int isCorrectExpression(char *expression) {
Stack stack;
initializeStack(&stack);
for (int i = 0; expression[i] != '\0'; i++) {
if (expression[i] == '(' || expression[i] == '[' || expression[i] == '{') {
push(&stack, expression[i]);
} else if (expression[i] == ')' && (stack.top == -1 || pop(&stack) != '(')) {
return 0; // Not correct
} else if (expression[i] == ']' && (stack.top == -1 || pop(&stack) != '[')) {
return 0; // Not correct
} else if (expression[i] == '}' && (stack.top == -1 || pop(&stack) != '{')) {
return 0; // Not correct
}
}
return stack.top == -1; // Check if the stack is empty
}
int main() {
int n;
scanf("%d", &n);
getchar(); // Consume the newline character
for (int i = 0; i < n; i++) {
char expression[100000];
fgets(expression, sizeof(expression), stdin);
if (isCorrectExpression(expression)) {
printf("Yes\n");
} else {
printf("No\n");
}
}
return 0;
}
Write a program that has variables to hold three test scores. The program should ask the user to enter three test scores, and then assign the values entered to the variables.
Create a program that prompts the user to input three test scores and saves those values in variables. An example in the Python language is given to demonstrate this.
Explanation:To write a program that handles test scores, we'll need to create variables to store the scores, prompt the user for input, and then save those inputs into the variables. Below is an example of how this could be done in a common programming language like Python:
# Prompt the user for test scoresIn this program, the input() function is used to get user input, which is then converted to a float (in case scores include decimals) and stored in the variables test_score1, test_score2, and test_score3.
Final answer:
To accept three test scores in a program, declare three variables and prompt the user to input their scores, which are assigned to these variables, as per best programming practices.
Explanation:
To write a program that accepts three test scores, you would need to declare three variables to store these scores. The user can then be prompted to enter their scores, which are assigned to the variables. In many programming languages, this involves using input functions.
Here is an example in Python:
# Declare variables
test_score1 = 0
test_score2 = 0
test_score3 = 0
# Prompt the user for input
test_score1 = float(input('Enter the first test score: '))
test_score2 = float(input('Enter the second test score: '))
test_score3 = float(input('Enter the third test score: '))
# The scores are now stored in the variables and can be used for further processing.
This snippet demonstrates how to use variables, prompt the user for input, and assign values to variables. As outlined in programming best practices, the variables should be defined at the top of the script to reduce bugs.
Create a new collection class named SortedLinkedCollection that implementsa collection using a sorted linked list. Include a toString method as described inExercise 30a. Include a test driver application that demonstrates your class workscorrectly
Answer:
Since you have not mentioned the way toString method was implemented in your class, I am just providing a sample implementation of it.
Please find the code in file attached.
Explanation:
Please see attached file.
The laser printer in your accounting department is printing faded prints that are getting lighter over time.
What is the most likely reason for the faded prints?
a. The printer has foreign matter inside the printer.
b. The fuser is not reaching the correct temperature.
c. The printer is low on toner.
d. The paper pickup rollers are worn.
Faded prints in a laser printer are typically caused by the printer being low on toner, which results in less toner being transferred to the paper and subsequently, lighter prints.
The most likely reason for the laser printer in your accounting department producing faded prints that are getting lighter over time is that the printer is low on toner. In a laser printer, a dry black powder called toner is given a negative charge and attracted to the positive regions of the drum. Next, paper is given a greater positive charge to pull the toner from the drum. The paper with electrostatically held toner then passes through heated pressure rollers which melt and permanently adhere the toner to the paper's fibers. When a printer begins to run low on toner, the amount of toner attracted to the drum is reduced, resulting in lighter and more faded prints.
Write a python script that uses random to generate a random grade (4.00 grading scale) inside a loop, and that loop keeps running until it generates a 4.00 GPA.
Answer:
Following are the program in the Python Programming Language.
#import the random package to generate random number
import random
#declare variables and initialize to 10 and 0
num = 10
count=0
#set for loop
for i in range(1,num):
#set variable that store random number
n = random.randint(0,5);
#set if conditional statement
if(n==4):
#print count and break loop
print("Count:%d"%(count))
break
#increament in count by 1
count+=1;
Output:
Count:4
Explanation:
Following are the description of the program.
Firstly, import required packages and set two variable 'num' initialize to 10 and 'count' initialize to '0'.Set the for loop that iterates from 1 to 9 and inside it, set variable 'n' that store the random number, set if conditional statement inside it print the count and break the loop and increment in count by 1.In this exercise, we wrote a Python script that generates random GPA values using the random module. The loop runs until a GPA of 4.00 is generated, demonstrating the use of loops and random number generation in Python.
Generating a Random GPA Until 4.00
In this exercise, we will write a Python script that uses the random module to generate random GPA values on a 4.00 grading scale inside a loop. The loop will continue running until it generates a random GPA of 4.00.
We will utilize the random.uniform function from the random module to generate random floating-point numbers within a specified range. Here is the complete code:
import random
gpa = 0.0
aCounter = 0
while gpa != 4.0:
gpa = round(random.uniform(0.0, 4.0), 2) # Generate a random GPA and round to 2 decimal places.
print(f"Generated GPA: {gpa}")
aCounter += 1
print(f"It took {aCounter} attempts to generate a 4.00 GPA.")
Explanation of the code:
Import the random module to access random number generating functions.Initialize the GPA variable to 0.0 and set up a counter to track the number of attempts.Create a while loop that continues running until the GPA generated is exactly 4.00.Use random.uniform(0.0, 4.0) to generate random GPA values within the 0.0 to 4.0 range and round the result to 2 decimal places.Print each generated GPA and update the attempt counter.Once a GPA of 4.00 is generated, print the total number of attempts taken.By running this script, students will understand how loops and random number generation work in Python and how to implement logic to continue looping until a specific condition is met.
Which of the following statements is false? Each class can define a constructor for custom object initialization. A constructor is a special member function that must have the same name as the class. C++ requires a constructor call for every object that’s created. A constructor cannot specify parameters.
Answer:
a. Each class can define a constructor for custom object initialization : This is True
b. A constructor is a special member function that must have the same name as the class : This is True
c. C++ requires a constructor call for every object that's created : This is True
d. A constructor cannot specify parameters : This is False
Explanation
a. The name of its string instance variable is initialized to null by default, when an object of class account is created, .
b. Constructors often have the same name as the class been declared. They have the duty of initializing the object's data members and also of establishing the invariant of the class.
c. C++ absolutely generates a default copy constructor which calls the copy constructors for all member variables and all base classes, except the programmer provides one, directly deletes the copy constructor (in order to avoid cloning) or one of the base classes or member variables copy constructor is deleted or not accessible (private).
d. When an object is created, each class declared optionally provides a constructor with parameters which would be used to initialize an object of a class. Thus, in order for fields to be initialized in the object at the time of creation, constructors need to specify parameters.
Therefore, the last statement is false
The statement that cannot be considered as true statement in this question is D:A constructor cannot specify parameters.
Option is right, because it is very possible for each class to define a constructor for custom object initialization.Option B, is also correct, because there should be the same name for both constructor which is regarded as special member function and the class. Option C is correct, because for every created object, there must be a constructor call for C++ .Therefore, option D is correct.
Learn more at,:
https://brainly.com/question/14903295?referrer=searchResults
Consider a class hierarchy that includes a class called Vehicles, with subclasses called and Airplane. The Vehicle class has a method called overridden in the class. The getMaxSpeed of the Vehicle class returns the method Car class I overridden to return 150 mph. What is the output of the following snippet of code?
Answer:
The code is not shared, but let me explain how it works. I believe there is also a class called Car.
Explanation:
If the object is created using Car class - Vehicle ob = Car(); the result will be the return value of getMaxSpeed in Car class.
If the object is created using Airplane class - Vehicle ob = Airplane(); the result will be the return value of getMaxSpeed in Airplane class.
(1) Create a new class called SavingsAccount that extends BankAccount.(2) It should contain an instance variable called rate that represents the annual interest rate. Set it equal to 2.5%.(3) It should also have an instance variable called savingsNumber, initialized to 0. In this bank, you have one account number, but can have several savings accounts with that same number. Each individual savings account is identified by the number following a dash. For example, 100001-0 is the first savings account you open, 100001-1 would be another savings account that is still part of your same account. This is so that you can keep some funds separate from the others, like a Christmas club account.(4) An instance variable called accountNumber that will hide the accountNumber from the superclass, should also be in this class.(5) Write a constructor that takes a name and an initial balance as parameters and calls the constructor for the superclass. It should initialize accountNumber to be the current value in the superclass accountNumber (the hidden instance variable) concatenated with a hyphen and then the savingsNumber.(6) Write a method called postInterest that has no parameters and returns no value. This method will calculate one month
The answer & explanation for this question is given in the attachment below.
Final answer:
A SavingsAccount class extends a BankAccount with specific features like an annual interest rate and separate savings numbers for different funds under one account number. It includes a postInterest method that calculates and deposits monthly interest.
Explanation:
To create a new class called SavingsAccount that extends BankAccount, you must first understand the basics of inheritance in object-oriented programming. Inheriting from the BankAccount class allows the SavingsAccount class to use its methods and properties. Additionally, a SavingsAccount has specific features such as an annual interest rate and the ability to have multiple savings numbers under one account number to keep funds separate for different purposes, like a Christmas club account.
Here is an example of how you might define such a class:
public class SavingsAccount extends BankAccount {
private double rate = 2.5;
private int savingsNumber = 0;
private String accountNumber;
public SavingsAccount(String name, double initialBalance) {
super(name, initialBalance);
this.accountNumber = super.getAccountNumber() + "-" + savingsNumber;
}
public void postInterest() {
double monthlyInterest = getBalance() * (rate / 12) / 100;
deposit(monthlyInterest);
}
// Additional methods and constructors can be added here
}
The postInterest method calculates one month's interest using the annual rate and then deposits it into the account, thereby compounding monthly.
Create a Java programming example of passing a name and age to a method. in the Main method, create variables for name and age. use the Scanner class to input the name and then the age. create a method called displayNameAge. pass the name and age to the method. display --"The name is _" -- "The age is ____" from the method. example: -"The name is Tom" "The age is 15"
Answer:
import java.util.Scanner;
public class num14 {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println("Enter a Name");
String name = input.next();
System.out.println("Enter the age");
int age = input.nextInt();
//Calling the Method
displayNameAge(name,age);
}
public static void displayNameAge(String name, int age){
System.out.println("The name is "+name+". The age is "+ age);
}
}
Explanation:
Using Java Programming language:
Firstly create a method called displayNameAge() That accepts two parameter a string for name and an int for ageThe method uses string concatenation to produce the required outputIn a main method the scanner class is used to prompt user to enter values for name and age. These are stored in two seperate variableThe method displayNameAge() is then called and passed these values as arguments.If an individual column is listed in a SELECT clause, along with a group function, the column must also be included in a(n) ____________________ clause.
Answer:
GROUP BY clause
Explanation:
The GROUP BY clause is used in SQL as a command to select statement to organize similar data or same values into groups. The GROUP BY clause is used in the SELECT statement in conjunction with aggregate functions to produce summary reports from the database. It combines the multiple records in single or more columns using some functions. If an individual column is listed in the SELECT clause, along with a group function, the column must also be listed in a GROUP BY clause.
Suppose that you accidentally executed an infinite-loop program, but no longer have access to the command line / terminal from which you ran the program. Upon opening another terminal, you type command 'ps a' and see this: PID TTY STAT TIME COMMAND 9551 pts/1 Ss 0:00 -tcsh 9575 pts/0 S+ 0:00 ./a.out 9577 pts/1 R+ 0:00 ps a What exact command should you type to stop execution of the infinite-loop program?
To stop the execution of the infinite-loop program with PID 9575, use the command 'kill -9 9575'. The '-9' flag sends the SIGKILL signal to forcefully terminate the specified process.
To stop the execution of the infinite-loop program, you need to identify its Process ID (PID) from the output of the 'ps a' command. In the given output:
PID TTY STAT TIME COMMAND
_______________________________________
9551 pts/1 Ss 0:00 -tcsh
9575 pts/0 S+ 0:00 ./a.out
9577 pts/1 R+ 0:00 ps a
________________________________________
The process with the PID 9575 is associated with the './a.out' command, which is likely the infinite-loop program. To stop its execution, you can use the 'kill' command with the PID:
kill -9 9575The '-9' flag indicates the use of the SIGKILL signal, which forcefully terminates the specified process. In this case, it will terminate the process with PID 9575, stopping the execution of the infinite-loop program.
The question probable maybe:
Suppose that you accidentally executed an infinite-loop program, but no longer have access to the command line/terminal from which you ran the program. Upon opening another terminal, you type command 'ps a' and see this:
PID TTY STAT TIME COMMAND
_______________________________________
9551 pts/1 Ss 0:00 -tcsh
9575 pts/0 S+ 0:00 ./a.out
9577 pts/1 R+ 0:00 ps a
________________________________________
What exact command should you type to stop execution of the infinite-loop program?