Select the correct answer.
What testing approach does a development team use when testing the developed code rather than just the functionality of the code?
A.
white box testing
B.
black box testing
C.
acceptance testing
D.
usability testing
Answer:
D. usability testing
Explanation:
A software can be defined as a set of executable instructions (codes) or collection of data that is used typically to instruct a computer how to perform a specific task and to solve a particular problem.
A software development life cycle (SDLC) can be defined as a strategic process or methodology that defines the key steps or stages for creating and implementing high quality software applications. There are seven (7) main stages in the creation of a software and these are;
1. Planning.
2. Analysis and requirements.
3. Software design and prototyping.
4. Development (coding).
5. Integration and testing
6. Deployment.
7. Operations and maintenance.
Usability testing is a testing technique used by a software development team to test a developed code rather than just the functionality of the code.
The main purpose of usability (user experience) testing is to determine how easy, user-friendly or difficult it is for end users (real people) to use a software application or program.
What are the advantages of using a database management system (DBMS) over using file-based data storage?
Answer:
Advantage of DBMS over file system
No redundant data: Redundancy removed by data normalization. No data duplication saves storage and improves access time.
Data Consistency and Integrity: As we discussed earlier the root cause of data inconsistency is data redundancy, since data normalization takes care of the data redundancy, data inconsistency also been taken care of as part of it
Data Security: It is easier to apply access constraints in database systems so that only authorized user is able to access the data. Each user has a different set of access thus data is secured from the issues such as identity theft, data leaks and misuse of data.
Privacy: Limited access means privacy of data.
Easy access to data – Database systems manages data in such a way so that the data is easily accessible with fast response times.
Easy recovery: Since database systems keeps the backup of data, it is easier to do a full recovery of data in case of a failure.
Flexible: Database systems are more flexible than file processing systems
Suppose that a disk unit has the following parameters: seek time s = 20 msec; rotational delay rd = 10 msec; block transfer time btt = 1 msec; block size B = 2400 bytes; interblock gap size G = 600 bytes. An EMPLOYEE file has the following fields: Ssn, 9 bytes; Last_name, 20 bytes; First_name, 20 bytes; Middle_init, 1 byte; Birth_date, 10 bytes; Address, 35 bytes; Phone, 12 bytes; Supervisor_ssn, 9 bytes; Department, 4 bytes; Job_code, 4 bytes; deletion marker, 1 byte. The EMPLOYEE file has r = 30,000 records, fixed-length format, and unspanned blocking.
Answer:
20
Explanation:
I hope it helps choose me the brainst
Fictional Corp has a DNS server running within its VPC. It has decided to move one of the application servers to a different VPC. Which of the following is a step that the cloud administrator needs to perform as part of the move?
a. Migrate to an external DNS solution
b. Create a new VPC that will serve DNS needs for multiple other VPCs
c. Discontinue using DNS
d. Remove the DNS entries within the VPC that are no longer relevant
Answer:
Here the correct option is option b Create a new VPC that will serve DNS needs for multiple other VPCs.
Explanation:
Fictional Corp has a DNS server running within its VPC. It has decided to move one of the application servers to a different VPC. It's not possible to maneuver an existing instance to a different subnet or VPC. Instead, you'll manually migrate the instance by creating a new VPC Image from the source instance.
b. Create a new VPC that will serve DNS needs for multiple other VPCs
If we were ever to use this pizza ordering program again, we would want to use mainline logic to control its execution. The way it is written, it will automatically execute as soon as it is imported.
Re-write this program, enclosing the top level code into the main function. Then execute the main function. Enter appropriate input so the output matches that under Desired Output.
# Define Function
def pizza(meat="cheese", veggies="onions"):
print("You would like a", meat, "pizza with", veggies)
# Get the User Input
my_meat = input("What meat would you like? ")
my_veggies = input("What veggie would you like? ")
# Call the Function
pizza(meat=my_meat, veggies=my_veggies)
desired output:
What meat would you like? cheese
What veggie would you like? onions
You would like a cheese pizza with onions
2) We want to generate 5 random numbers, but we need the random module to do so. Import the random module, so the code executes.
# Define main function
def main():
print("Your random numbers are:")
for i in range(5):
print(random.randint(1, 10))
# Call main function
main()
desired output:
Your random numbers are:
[x]
[x]
[x]
[x]
[x]
Answer:
Explanation:
The Python program has been adjusted. Now the pizza ordering function is called from the main() method and not as soon as the file is imported. Also, the random package has been imported so that the random.randint(1,10) can correctly create the 5 random numbers needed. The code has been tested and the output can be seen in the attached image below, correctly matching the desired output.
import random
def pizza(meat="cheese", veggies="onions"):
print("You would like a", meat, "pizza with", veggies)
def main():
# Get the User Input
my_meat = input("What meat would you like? ")
my_veggies = input("What veggie would you like? ")
# Call the Function
pizza(meat=my_meat, veggies=my_veggies)
print("Your random numbers are:")
for i in range(5):
print(random.randint(1, 10))
# Call main function
main()
Your new trainee is interested in ACLs (access control lists). He asks you want they can be used for. What should you tell him? A. Protect hosts from viruses.B. Classify network traffic.C. Provide high network availability.D. IP route filtering.
Answer:
B. Classify network traffic.
D. IP route filtering.
Explanation:
An access control can be defined as a security technique use for determining whether an individual has the minimum requirements or credentials to access or view resources on a computer by ensuring that they are who they claim to be.
Simply stated, access control is the process of verifying the identity of an individual or electronic device. Authentication work based on the principle (framework) of matching an incoming request from a user or electronic device to a set of uniquely defined credentials.
Basically, authentication and authorization is used in access control, to ensure a user is truly who he or she claims to be, as well as confirm that an electronic device is valid through the process of verification
Hence, an access control list primarily is composed of a set of permissions and operations associated with a network or file.
In Computer networking, access control lists (ACLs) can be used to perform the following tasks;
I. Classify network traffic: it can be used to classify the different networks on a router and define whether packets are rejected or accepted.
II. Internet protocol (IP) route filtering: any internet protocol (IP) address that's is not on the accept list would be refused permission into accessing a network. Thus, ACLs can either deny or accept IP addresses depending on the routing table configured on the router.
Write a function gcdRecur(a, b) that implements this idea recursively. This function takes in two positive integers and returns one integer.
''def gcdRecur(a, b):
'''
a, b: positive integers
returns: a positive integer, the greatest common divisor of a & b.
'''
# Your code here
if b == 0:
return a
else:
return gcdRecur(b, a%b)
#Test Code
gcdRecur(88, 96)
gcdRecur(143, 78)
© 2021 GitHub, Inc.
Answer & Explanation:
The program you added to the question is correct, and it works fine; It only needs to be properly formatted.
So, the only thing I did to this solution is to re-write the program in your question properly.
def gcdRecur(a, b):
if b == 0:
return a
else:
return gcdRecur(b, a%b)
gcdRecur(88, 96)
gcdRecur(143, 78)
Assume that the following class is defined. Fill in the missing statements in the most direct possible way to complete the described method. class LooseChange: def __init__(self, value): self.value
Answer:
Already filled
Explanation:
The code above is the syntax for class definition in Python programming language. def __init__(self, value): self.value is definition of the constructor for the class LooseChange. The constructor function in a class is used to instantiate new objects or instances of the class. For example, if we wanted to define a new object of the class LooseChange, we would use the constructor defined in our class LooseChange.
Write the correct statements for the above logic and syntax errors in program below.
#include
using namespace std;
void main()
{
int count = 0, count1 = 0, count2 = 0, count3 = 0;
mark = -9;
while (mark != -9)
{
cout << "insert marks of students in your class, enter -9 to stop entering";
cin >> mark;
count++;
if (mark >= 0 && mark <= 60);
count1 = count1 + 1;
else if (mark >= 61 && mark <= 70);
count2 = count2 + 1;
else if (mark >= 71 && mark <= 100);
count3 = count3 + 1;
}
cout <<"Report of MTS3013 course" << endl;
cout <<"Mark" << count << endl << endl;
cout << "0-60" << "\t\t\t\t" << count1 << endl;
cout << "61-70" << "\t\t\t\t" << count2 << endl;
cout << "71-100" << "\t\t\t\t" << count3 << endl<< endl << endl;
cout << "End of program";
}
The advantages of cloud computing are demonstrated in the fact that software and hardware upgrades are minimized. Another advantage important to IT professionals and just about anyone that accesses data on computers is Multiple Choice the automatic backup of data. the need for fewer tech employees. better group decision making. less of a need to share data among many sources.
Answer: the automatic backup of data
Explanation:
Cloud computing simply refers to the delivery of computing services such as databases, servers, networking, storage, etc over the Internet that is, the cloud.
Advantages of closing d computing include faster innovation, minimal software and hardware upgrades, economies of scale, backup of data, better security, and the greater ability for data to be shared with others in the organization.
Scenario You are a network engineer and it is your first day working with ASU and you have been given the job of creating a network for the IT program. You are given the following three tasks to complete. 1. Configure IP addressing settings on network devices. 2. Perform basic device configuration tasks on a router. 3. Verify Layer 3 connectivity via a routing protocol. 4. Setup some access control lists.
How has Linux affected the market for proprietary software?
Answer:
Linux is an operating system made up of free software, which can be installed and run on a wide variety of computer systems, from small devices such as mobile phones to large computer systems and supercomputers.
Linux is often offered to the user in various Linux distributions. A characteristic of the distributions is the great possibility of customization and selection that they offer since each one is aimed at a different type of user. Depending on the philosophy, each distribution can provide a greater foundation for ease of use, multimedia applications, ease of configuration, system simplicity, only free software, low resource requirements, and more.
Because of its low cost, high configurability and availability on various platforms, Linux is becoming increasingly popular not only among specialized users, but also among domestic users.
What are some of the advantages and disadvantages of connection-oriented WAN/Man as opposed to connection-less?
Answer and Explanation:
Connection oriented WAN/MAN as opposed to connection less network is a type of wide area network that requires communicating entities in the network to establish a dedicated connection for their communication before they start communicating. This type of network will use these established network layers only till they release it, typical of telephone networks.
Advantages include:
Connection is reliable and long.
Eliminates duplicate data issues.
Disadvantages include:
Resource allocation while establishing dedicated connection slows down speed and may not fully utilize network resources.
There are no plan B's for network congestion issues, albeit occurring rarely with this type of network.
Identify some advantages of using Excel over lists, paper files, or simple word documents? Describe some disadvantages of using Excel over lists, paper files, or simple word documents? Summarize one thing in you home life that could be improved or more easily managed using Excel?
Excel
Excel is a software program that contains spreadsheet. Spreadsheet is an electric document that works numbers and display results in graphs. There are vertical columns and horizontal rows.
they are several advantages of excel which is;
Excel is very efficient to use, especially when you have to calculate your data, it's not hard to calculate the computer itself calculates it for you.they are also disadvantages of excel which is;
some users might get a little bit problem when you send Microsoft Excel, here is one sometimes the spreadsheet are difficult to share internally.I have a Dell laptop and last night it said that it needed to repair it self and asked me to restart it. So I did but every time I turn it on it shuts itself down. I had a problem exactly like this before with my old computer, was not a Dell though, and I ended up having to have it recycled. This computer I have now is pretty new and I really don't want to have to buy a new computer. What should I do to fix this problem? Please help, I'm a college student almost ready to graduate and all of my classes are online. I'm starting to panic. Thanks for helping me figure this situation out.
The same thing happened with my HP laptop but my dad refresh the laptop before restating it worked
Modify the solution to PP 11.1 such that it catches and handles the exception if it is thrown. Handle the exception by printing an appropriate message, and then continue processing more strings.
Answer:
Explanation:
The following code is written in Java. After finding the PP 11.1 file online I added the try/catch to the code as requested by the question. The program takes the input from the user, checks it's length, and if it contains more than 20 characters it throws the exception. This exception states that "the string has more than 20 characters" and then continues processing more strings until the user enters "DONE". The program has been tested and the output can be seen in the attached image below. Due to technical difficulties I have added the code as a txt file below.
What is the SQL command to list the total sales by customer and by product, with subtotals by customer and a grand total for all product sales
Answer:
Please find the complete query and question in the attached file.
Explanation:
In this query, we use the select command in which we select the column that is "CUS_CODE, P_CODE" with the sum method that multiples the "SALE_UNITS * SALE_PRICE" values and use them as and group by the clause that stores all the values in the column that are "CUS_CODE, P_CODE WITH ROLLUP".
Which of the following is the BEST solution to allow access to private resources from the internet?
a. VPN
b. Subnet
c. Packet filters
d. FTP
Write a for loop to populate array userGuesses with NUM GUESSES integers. Read integers using Scanner. Ex If NUM GUESSES is 3 and user enters 9 5 2, then userGuesses is 19, 5, 2) 1 import java til. Sca nner 3 public class Store Guesses 4 public static void main (string args) Scanner SCnr new Scanner (System in final int NUM GUESSES int[] user Guesses new int[NUM. GUESSES] int 0; Your solution goes here 10 for (i 03 i NUM GUESSES ++i){ 11 user Guesses [i] scnr.nextInt 12 13 14 15 for (i 0; i NUM GUESSES ++i) 16 System.out print (u 17 18 19 for (i 0; i NUM GUESSES ++i)t 20 System Ou print (userGuesses[i] 21 Run X Testing for 12, 4, 6) 2 4 6 Expected output Your output 2 4 6 2 4 6 Tests aborted
Answer:
import java.util.Scanner;
public class StoreGuesses {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
final int NUM_GUESSES = 3;
int[] userGuesses = new int[NUM_GUESSES];
int i = 0;
for (i = 0; i < NUM_GUESSES; ++i){
userGuesses[i] = scnr.nextInt();
}
for (i = 0; i < NUM_GUESSES; ++i){
System.out.print(userGuesses[i] + " ");
}
}
}
/*
Output:
2 4 6
2 4 6
*/
Write a program named guess_number.py. Use NumPy to generate a random number between 1 and 100. Accept int input and ask user to guess number. Inform if high or low. Exit when entered number correct. Tell user how many tries it took to guess number.
Answer:
download the .txt file and change the file name to guess_number.py then run it in a python interpreter. I used Python 3.9.6 for this project and I used Visual Studio Code as my IDE.
Explanation:
The code has comments that tell you what is happening.
I hope this helped :) If it didn't please let me know what went wrong so I can fix it.
In a program named guess_number.py. Use NumPy to generate a random number between 1 and 100. Accept int input and ask the user to guess the number.
What are programming used for?The motive of programming is to discover a series of commands with the intention to automate the overall performance of a task (which may be as complicated as a running system) on a computer, regularly for fixing a given problem.
Import NumPy as np def main(): # Random variety Random Number = np.random.randint(1, 100) # A begin variable Start = Try.# This value is the handiest used to decide if the person has been known that the fee is excessive or low High Or Low Message Displayed Already = False # Amount of guesses that the person were given incorrectly. Guess Gotten Wrong 0 # The general quantity of guess AmountOfGuesses = 0 # Beginning of some time loop in order to maintain the software jogging till the person guesses the random variety print("The fee is excessive") High Or Low Message DisplayedAlready = True Elif RandomNumber <= forty nine and High OrLow MessageDisplayedAlready == False:print("The fee is low")
High Or Low Message Displayed Already = True.
AmountOfGuesses += print("Wrong! You have gotten " + str(GuessGottenWrong) + " guesses incorrect. main()Read more about the program :
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GENERATIONS OF
ACTIVITY 12
In tabular form differentiate the first four generations of computers.
g Palindrome counting. Write a Python program stored in a file q3.py to calculate the number of occurrences of palindrome words and palindrome numbers in a sentence. Your program is case-insensitive, meaning that uppercase and lowercase of the same word should be considered the same. The program should print the palindromes sorted alphanumerically with their number of occurrences. Numbers must be printed first, and words must be printed nex
Answer:
The program is as follows:
sentence = input("Sentence: ")
numbers = []; words = []
for word in sentence.split():
if word.lower() == word[::-1].lower():
if word.isdigit() == False:
words.append(word)
else:
numbers.append(int(word))
words.sort(); numbers.sort()
print(numbers); print(words)
Explanation:
This gets input for sentence
sentence = input("Sentence: ")
This initializes two lists; one for numbers, the other for word palindromes
numbers = []; words = []
This iterates through each word of the sentence
for word in sentence.split():
This checks for palindromes
if word.lower() == word[::-1].lower():
If the current element is palindrome;
All word palindromes are added to word palindrome lists
if word.isdigit() == False:
words.append(word)
All number palindromes are added to number palindrome lists
else:
numbers.append(int(word))
This sorts both lists
words.sort(); numbers.sort()
This prints the sorted lists
print(numbers); print(words)
User-Defined Functions: Miles to track lapsOne lap around a standard high-school running track is exactly 0.25 miles. Define a function named MilesToLaps that takes a float as a parameter, representing the number of miles, and returns a float that represents the number of laps.Then, write a main program that takes a number of miles as an input, calls function MilesToLaps() to calculate the number of laps, and outputs the number of laps. Ex: If the inout is 1.5the output is 6.0 Ex: If the input is 2.2the output is 8.8 Your program should define and call a function Function Miles ToLaps(float userMiles) returns float userLaps 12 // Deine Milestola hert. 34 // Deine Minhert. Your code ust call llestola 5
Answer:
Explanation:
The following is written in Java. The MilesToLaps method creates a variable called laps and gives it the value of the input parameter miles divided by 0.25. Then it returns the variable laps to the user. In the main method a Scanner object was created and asks the user for the number of miles which are passed to the MilesToLaps method which returns the number of laps. This can be seen in the attached image below.
import java.util.Scanner;
class Brainly {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
System.out.println("How many miles?");
float miles = in.nextFloat();
System.out.println("This is " + MilesToLaps(miles) + " laps");
}
public static float MilesToLaps(float miles) {
float laps = (float) (miles / 0.25);
return laps;
}
}
convert 198 / 61 to ratio
I think the answer is
198:61
I'm not sure
hurry plz What module do you need to import in order to use a pseudo-random number in your game? random guesser guess randomizer
Answer:
import random
Explanation:
if it's python try import random
Answer:
ramdom C
Explanation:
Kareem is working on a project for his manager. He has a few questions for a co-worker who he knows is knowledgeable on the subject. As they're discussing some of the topics, he gives the co-worker permissions to the resources so they can look at the information on their own. Which of the following access control methods does Kareem's company use?
a. DAC
b. RBAC
c. MAC
d. TSAC
Answer: RBAC
Explanation:
The access control methods that Kareem's company uses us the role based access control.
The Role-based access control (RBAC) simply means assigning permissions to users based on the role that such individual plays within an organization.
RBAC is a simple approach to access management and is typically less prone to error than in a scenario whereby permissions are assigned to users individually. Access rights are given to the workers based on what their job entails and what is needed and other information which isn't needed won't be accessible to them.
Ramjac Company wants to set up k independent file servers, each capable of running the company's intranet. Each server has average "uptime" of 98 percent. What must k be to achieve 99.999 percent probability that the intranet will be "up"?
Answer:
k = 3
Explanation:
K independent file servers
Average "uptime" of each server = 98%
To achieve 99.99% probability by the intranet
given that each server has an uptime = 98%
For the intranet to achieve 99.99% probability we have to choose more than 2 servers ( i.e. 3 servers ) incase any of the server goes down.
As each server posses an uptime of 98% it is almost impossible for all 3 servers to go down at the same time hence value of K = 3
It should be noted that the value of k to achieve 99.99 percent probability will be 3.
How to solve the probabilityFrom the information given, k is simply the independent file servers.
Also, the average uptime of each server is given as 98%. For the intranet to achieve 99.99% probability, it should be noted that more than 2 servers will be chosen.
In this case, it'll be impossible for the three servers to go down.
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Viết Chương trình nhập và xuất mảng 1 chiều số thực với n phần tử do người dùng nhập
Answer(Java):
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
ArrayList<String> String = new ArrayList<String>();
Scanner myObj = new Scanner(System.in);
System.out.Print(Enter a number of times to add: );
String timesNumber = myObj.nextLine();
System.out.Print(Enter a number that will add to the list: );
String addNumber = myObj.nextLine();
int TimesNumber = Integer.parseInt(timesNumber);
int AddNumber = Integer.parseInt(addNumber);
for(i=0, i < AddNumber, i++) {
String.add(AddNumber);
}
}
}
3 features of digital computer
Answer:
A typical digital computer system has four basic functional elements: (1) input-output equipment, (2) main memory, (3) control unit, and (4) arithmetic-logic unit. Any of a number of devices is used to enter data and program instructions into a computer and to gain access to the results of the processing operation.
Explanation:
If the following Java statements are executed, what will be displayed?
System.out.println("The top three winners are\n");
System.out.print("Jody, the Giant\n");
System.out.print("Buffy, the Barbarian");
System.out.println("Adelle, the Alligator")
Answer:
The top three winners are
Jody, the Giant
Buffy, the BarbarianAdelle, the Alligator
The answer is top three champions are Jody, the GiantBuffy, the BarbarianAdelle, the Alligator.
What is winners?A winner's perspective is one of optimism and enthusiasm. The multiple successful individuals I know all have a wonderful outlook. They know that every shadow has a silver lining, and when property happens, they recuperate quickly. They look for ways to control stuff from occurring because they learn from every position (see above point).Success is a comparative term. If you achieve what you desire to and are happy, then I believe that is a success. It could be applied to life in available or to particular tasks in life. ( college student with a mobility impairment) My description of success is achieving individual goals, whatever they may be.a small, usually circular area or section at a racetrack where distinctions are bestowed on defeating mounts and their jockeys. any special group of winners, achievers, or those that have been accepted as excellent: the winner's circle of acceptable wines.To learn more about winners, refer to:
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