A decimal integer(detects the base automatically
list with ecamples five important applications areas of computer today
Answer:
Banking
Education
Business
Engineering and Architectural designs
Health
Explanation:
Banking : Shifting from the manual method of having to input information into hard book ledgers. Data and payment information can now be stored on computers. This may be used to prevent information duplication, forecasting and efficient payment purposes.
Education : With the use of computers today, students can now take computer based tests which are not only easily accessible and curtails geographical issues, they are also faster.
Business : With computers, businesses can now manage and their store customer information, inventory management and sales tracking.
Engineering and Architectural designs : With computers, thesw fields can now boast of computer aided designs which allows experts produce both 2 and 3 - dimensional prototype of equipments, buildings, building plans or other engineering structures.
Health : Adequate health record, patient appointment, digitally monitored pulse rate are some of the uses of computers in medicine.
write a java program to input the corresponding data to print the result of the following expression
y=ax²+bx+c
Answer:
The program in Java is as follows:
import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
float a, b, c, x, y;
a = input.nextFloat();
b = input.nextFloat();
c = input.nextFloat();
x = input.nextFloat();
y = a * x * x + b * x + c;
System.out.print(y); }}
Explanation:
This declares all variables
float a, b, c, x, y;
The next 4 lines get input for a, b, c and x
a = input.nextFloat();
b = input.nextFloat();
c = input.nextFloat();
x = input.nextFloat();
This calculates the value of y using [tex]y = ax^2 + bx + c[/tex]
[tex]y = a * x * x + b * x + c;[/tex]
This prints the calculated value of y
System.out.print(y);
which among the following shortcut key is used to check spelling
click Alt + f7 to check spelling
Answer:
Simply click Alt + F7 keys
What is congnitive overload
Explanation:
is a situation where the teacher gives too much information or too much many tasks to Learners simmultaneously , resulting in the learner being unable to process this information
Answer:
Cognitive loadLanguageWatchEditIn cognitive psychology, cognitive load refers to the used amount of working memory resources. There are three types of cognitive load: intrinsic cognitive load is the effort associated with a specific topic; extraneous cognitive load refers to the way information or tasks are presented to a learner; and germane cognitive load refers to the work put into creating a permanent store of knowledge (a schema).Cognitive load theory was developed in the late 1980s out of a study of problem solving by John Sweller.[1] Sweller argued that instructional design can be used to reduce cognitive load in learners. Much later, other researchers developed a way to measure perceived mental effort which is indicative of cognitive load.[2][3] Task-invoked pupillary response is a reliable and sensitive measurement of cognitive load that is directly related to working memory.[4] Information may only be stored in long term memory after first being attended to, and processed by, working memory. Working memory, however, is extremely limited in both capacity and duration. These limitations will, under some conditions, impede learning. Heavy cognitive load can have negative effects on task completion, and it is important to note that the experience of cognitive load is not the same in everyone. The elderly, students, and children experience different, and more often higher, amounts of cognitive load.The fundamental tenet of cognitive load theory is that the quality of instructional design will be raised if greater consideration is given to the role and limitations of working memory. With increased distractions, particularly from cell phone use, students are more prone to experiencing high cognitive load which can reduce academic success.[5]Explanation:
Hope it helps ^-^
#CarryOnLearning
17. Which of the following keyboard shortcut is used to copy the selected text?
a. Ctrl+c
b. Ctrl+V
c. Ctrl+X
d. Ctrl+Z
Answer:
ctrl+c is used to copy the selected text
Answer:
A. Ctrl+c
Explanation:
I took the test, also you can use Command c and Command v to copy and paste.
If an audio signal is to be coded, either for compression or for digital transmission, it must undergo some form of quantization. Most often, a general technique known as vector quantization is employed for this task, but this technique must be tailored to the specific application so it will not be addressed here. In this assignment, we will observe the effect of uniformly quantizing the samples of two audio signals.
a) Record your voice for 4 seconds and play it again using predefined MATLAB audio functions.
b) Use your Uquant function to quantize each of these signals to 7, 4, 2 and 1 bits/sample.
c) Listen to the original and quantized signals and answer the following questions using the comments in the same MATLAB file:
1- For each signal, describe the change in quality as the number of b/sample is reduced?
2- For each signal, is there a point at which the signal quality deteriorates drastically?
3- At what point (if any) does it become incomprehensible?
4- Which signal's quality deteriorates faster as the number of levels decreases?
5. Do you think 4 b/sample is acceptable for telephone systems? ... 2 b/sample?
d) Use subplot to plot in the same figure, the four quantized speech signals over the index range 7201:7400.
Answer:
bakakkallalalnabzjs d bannn my account pls
An analyst suggests that the lower the number of clusters, would give us the strongest and most meaningful result, as opposed to a large number of clusters.
a. True
b. False
Answer:
a. True
Explanation:
Various studies have shown that this is true. Clusters allow you to group together large sets of data into smaller groups in order to find similarities between all the data. Having a smaller number of clusters has been proven to allow you to discover much simpler similarities which can have a much greater impact. Larger sets can help in discovering more unique similarities but they do not have as large of an impact and are less meaningful. This is also why it is recommended to have a lower number of clusters when analyzing data sets.
Which of the following describes an iteration in a computer program?
Answer:
a set of instructions that can be run multiple times throughout a program
Explanation:
g Write a function named find_min that takes two numbers as arguments and returns the minimum of the two. (Behavior is not specified for which to return, if they are even -- we won't test that case.) For example: Given 2 and 4, the function returns 2 as the minimum.
Answer:
Following are the code to the given question:
#include <iostream>//header file
using namespace std;
void find_min(int x,int y)//defining a method find_min that takes two parameters
{
if(x<y)//use if to check x less than y
{
cout<<x;//print value x
}
else//else block
{
cout<<y;//print value y
}
}
int main()//main method
{
int x,y;//defining integer variable
cout<<"Enter first number: ";//print message
cin>>x;//input value
cout<<"Enter second number: ";//print message
cin>>y;//input value
find_min(x,y);//calling method
return 0;
}
Output:
Enter first number: 4
Enter second number: 2
2
Explanation:
In this code, a method "find_min" that takes two integer variable "x,y" in its parameters and use if block to check its value and print is value.
In the main method, we declared two integer variable "x,y" that takes value from user-end, and pass the value into the method that prints its calculated value.
A _____ virus uses the language of an application that records a sequence of keystrokes and instructions in an application, such as word processing or spreadsheet, to hide virus code.
Answer: macro virus
Explanation:
The virus that uses virus uses the language of an application which is vital in recording the sequence of the keystrokes and the instructions in an application, like spreadsheet or the word processing in order to hide virus code is the macro virus.
A macro virus is simply a computer virus which is written in same macro language that is being used for software programs. When a software application is being infected by the macro virus, it leads to a sequence of actions which automatically start when the application is being opened.
Write a program that receives a filename as user input. The file is structured as multiple lines containing numbers separated by a single space. For example, this would be an acceptable file:
Answer:
The solution in Python is as follows:
filename = input("File: ")
fll = open(filename, "r")
for line in fll:
for i in line.split():
print(i,end='\t')
print()
Explanation:
The complete question implies that the program reads a file and displays the file content in a structured way (tabs or spaces)
The explanation is as follows:
This gets input for the file name
filename = input("File: ")
This opens the file for read operation
fll = open(filename, "r")
This iterates through the lines of the file
for line in fll:
This iterates through each line (splitted by space)
for i in line.split():
This prints the current element followed by a tab
print(i,end='\t')
This starts printing on another line
print()
Select statements about Multiprocessors that are FALSE. a. Asymmetric multiprocessors are a popular form of tightly coupled architecture b. Symmetric multiprocessors are a popular form of tightly coupled architecture c. Tightly coupled multiprocessors share a single centralized memory, which requires an operating system to synchronize processes carefully to ensure protection d. Loosely coupled multiprocessors have a physically distributed memory and are also known as distributed systems
Answer:
The statement about Multiprocessors that is FALSE is:
a. Asymmetric multiprocessors are a popular form of tightly coupled architecture
Explanation:
Symmetric multiprocessors house two or more identical processors sharing a single main memory. The multiprocessors are tightly coupled, and all of them can access all the connected devices without any preferential treatment of one over the others. This is unlike asymmetric multiprocessors that do not share a single main memory. Instead, they have distributed memories.
A) Write "T" for true statement and "F" for false statement.
ii) Programming in machine level language is very easy.
iii) In Adobe Photoshop, Rectangle tool is used to draw rectangle shape
Answer:
ii. False
iii. True
Explanation:
Machine and assembly are referred to as a low level programming language used in writing software programs or applications with respect to computer hardware and architecture. Machine language is generally written in 0s and 1s, and as such are cryptic in nature, making them unreadable by humans but easily understandable to computers.
In view of the above, we can deduce that programming in machine level language is very difficult for humans.
Adobe Photoshop is a proprietary software application designed and developed by Adobe inc. for both Windows and MacOS operating system. It is a raster graphics editor that's typically used for imaging and graphics design. It comprises of various shape tools such as ellipse, line, polygon, triangle, custom shape and rectangle.
Generally, the Rectangle tool is used to draw rectangle shape (vector and pixel-based) in Adobe Photoshop.
Identify at least three tips you would give to people to stay safe on the Internet so that their information stays secure. Explain why these tips are useful.
Answer:
1. Do not give away personal information such as your address, school you go to, or anything like that (obvious reasons
2. Do not share your passwords because people can hack into your things
3. Don't make guessable passwords such as Cookies, ILovePizza, Money
UNIX inodes are an example of an indexed file allocation scheme. What levels of indexing were they designed to support. A. Direct B. Single indirect C. Double indirect D. Triple indirect E. All of the above are supported by UNIX inodes.
Answer: E. All of the above are supported by UNIX inodes
Explanation:
An inode refers to the data structure that's in the UNIX operating systems which consists of vital information that has to do with the files that's within a file system.
It should be niteec that when there's creation of a file system in UNIX, then a set amount of inodes will be created too.
The levels of indexing that the UNIX inodes were designed to support include the direct, single indirect, double indirect and the triple indirect. Therefore, the correct option is E.
What tells the hardware what to do and how to do it?
Central Processing Unit (CPU)
Software
Hardware
Hard Drive (HDD)
Answer:
Software
Explanation:
Software directs a set of instructions to computer hardware and tell them what to do and how to do it.
The most serious security threat to Bluetooth-enabled devices is ____, which occurs when a hacker gains access to the device and its functions without the owner's consent.
The most serious security threat to Bluetooth-enabled devices is [tex]\sf\purple{bluebugging}[/tex], which occurs when a hacker gains access to the device and its functions without the owner's consent.
[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}[/tex]
Precipitation patterns in gulf Mexico
What tasks do date entry macros commonly perform?
Answer:
set a default date
Explanation:
Date entry macros are used to seta default date.
Date macros can be used to create custom date formats.
write a program to display your name, age and address in c programming
Answer:
The program in C is as follows:
#include <stdio.h>
int main(){
char name[] = "Mr. Royal";
int age = 20;
char address[] = "Lagos, Nigeria";
printf("Your name is %s.\n", name);
printf("You are %d years old\n", age);
printf("Your address is %s.", address);
return 0;
}
Explanation:
This initializes the name
char name[] = "Mr. Royal";
This initializes the age
int age = 20;
This initializes the address
char address[] = "Lagos, Nigeria";
This prints the name
printf("Your name is %s.\n", name);
This prints the age
printf("You are %d years old\n", age);
This prints the address
printf("Your address is %s.", address);
Change the necessary details to yours
What most defines a community in the digital age?
binary calculation of 1110÷101
I need solutions to below questions with python code:
Write a program, my_family.py For Loop A program, work-list.pyList
1. that contains a Tuple holding the names of friends or family members. Then use a For Loop to read and print the names.
2. that contains a of six integers. Use a list method to add one more integer. Use a list method to sort the list. Use a While Loop to print the entries.
Answer:
1) my_family.py
family = ('Dad', 'Mom', 'Agnes', 'David', 'Chris', 'Millie')
for name in range(len(family)):
print(family[name])
2) work_list.py
my_number = [2, 6, 3, 1, 8, 4]
# add items at the end of the list.
my_number.append(0)
my_number.append(5)
# sorts the list, default - ascending.
my_number.sort()
size = 0
while size < len(my_number):
print(my_number[size])
size += 1
Explanation:
The tuple and list data structures are ordered, using indexes to locate items in its container.
The family.py file uses the for-loop to iterate and print the family names in the tuple.
The work-list.py file contains a list of integers which is modified by adding items at the end of the list with the append method and a prints all the items using a while-loop.
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Answer:
6.enable data to pass between computers in a network to aid communication between users. As a network engineer, you'll have responsibility for setting up, developing and maintaining computer networks within an organisation or between organisations.
7.Sony
At times, what seems to be an effective value network can also be vulnerable to quickly losing effectiveness. At one time, Sony Corporation set up a value network designed to have a "one-stop" gaming experience for its customers. From 2003 to 2008, Sony designed an all-encompassing gaming portal. However, the network was disrupted when computer hackers began breaking into the system and retrieving sensitive banking data from the network users. As a result, the effectiveness of the network was severely compromised.
Explanation:
1 convert (101011)2 ( )10 ? convert(596)10= ( )16 ? convert( 101011101)2 ( )16 ? convert(37)10= ( )2 ?
(a) convert (101011)₂ = ( )₁₀ ?
(b) convert(596)₁₀= ( )₁₆ ?
(c) convert( 101011101)₂ = ( )₁₆ ?
(d) convert(37)₁₀= ( )₂ ?
Answer:(a) (101011)₂ = ( 43)₁₀
(b) (596)₁₀= ( 254)₁₆
(c) ( 101011101)₂ = ( 15D)₁₆
(d) (37)₁₀= ( 100101)₂
Explanation:(a) convert (101011)₂ = ( )₁₀
This means that (101011)₂ be converted to base 10 (decimal).
To convert from binary to decimal, find the sum of the binary digits times their power of 2. i.e
(101011)₂ = 1 x 2⁵ + 0 x 2⁴ + 1 x 2³ + 0 x 2² + 1 x 2¹ + 1 x 2⁰
(101011)₂ = 1 x 32 + 0 x 16 + 1 x 8 + 0 x 4 + 1 x 2 + 1 x 1
(101011)₂ = 32 + 0 + 8 + 0 + 2 + 1
(101011)₂ = 43₁₀
Therefore, (101011)₂ = ( 43)₁₀
(b) convert(596)₁₀= ( )₁₆
This means that (596)₁₀ be converted to base 16 (hexadecimal).
To convert from decimal to hexadecimal,
i. start by dividing the decimal number by 16 taking note of the result and the remainder.
ii. divide the result obtained in (i) by 16 and take note of the new result and the remainder.
iii. repeat steps i and ii until the result is 0.
iv. the result is a combination of the remainders starting from the last.
16 | 596
16 | 37 r 4
16 | 2 r 5
| 0 r 2
Now combine the remainders starting from the bottom up. i.e
254₁₆
Therefore, (596)₁₀= ( 254)₁₆
(c) convert ( 101011101)₂ = ( )₁₆
This means that (101011101)₂ be converted to base 16 (hexadecimal).
To convert from binary to hexadecimal,
i. starting from the rightmost bit, group the binary digits into a group of 4 bits as follows
101011101 => 1 0101 1101
ii. the group that does not contain 4 bits is padded with 0s
101011101 => 0001 0101 1101
iii. using the hexadecimal table, convert each group to hexadecimal as follows.
0001 = 1
0101 = 5
1101 = D
iv. combine the result
15D
Therefore, ( 101011101)₂ = ( 15D)₁₆
(d) convert(37)₁₀= ( )₂
This means that (37)₁₀ be converted to base 2 (binary).
To convert from decimal to binary,
i. start by dividing the decimal number by 2 taking note of the result and the remainder.
ii. divide the result obtained in (i) by 2 and take note of the new result and the remainder.
iii. repeat steps i and ii until the result is 0.
iv. the result is a combination of the remainders starting from the last.
2 | 37
2 | 18 r 1
2 | 9 r 0
2 | 4 r 1
2 | 2 r 0
2 | 1 r 0
| 0 r 1
Now combine the remainders starting from the bottom up. i.e
100101₂
Therefore, (37)₁₀= ( 100101)₂
how you plan to deal with stress?
3. Why is human resource plan made
Answer: See explanation
Explanation:
Human Resource Planning refers to the process whereby the future human resource requirements of an organization is predicted and how the current human resources that the organization has can be used to fulfill the goals.
Human resources planning is made as it's useful helping an organization meet its future demands by supplying the organization with the appropriate people.
Human resource planning also allows organizations plan ahead in order to have a steady supply of effective and skilled employees. It also brings about efficient utilization of resources. Lastly, it leads to better productivity and organizational goals will be achieved.
Suppose a class Car and its subclass Honda both have a method called speed as part of the class definition. rentalH refers to an object of the type Honda and the following statements are found in the code: rentalh.cost(); super.speed(); what will the first statement do?
A. Nothing will be called since the code will not compile as a result of multiple definitions of speed.
B. The cost method in Car will be called.
C. The cost method in Honda will be called.
D. Overloading will be used to determine which cost method to use.
Answer:
C. The cost method in Honda will be called.
Explanation:
The first statement will cause the cost method in Honda to be called. This is because rentalh is a object of the subclass Honda. Therefore, any method that is called using this object variable will target the elements within the Honda subclass. In this case, the cost() method is being called using the rentalh variable which will look for the cost() method within the scope of the Honda subclass. In order to target the parent class Car it would need to be called using the super variable as in statement 2.
Produce a program using a loop that requests for 8 floating point numbers from a user.once provided the program should calculate the average of all numbers that are less than 10.5
Answer:
The program in Python is as follows:
total = 0
count = 0
for i in range(8):
num = float(input())
if num < 10.5:
total+=num
count+=1
print("Average: ",total/count)
Explanation:
This initializes the total to 0
total = 0
This initializes the count to 0
count = 0
This loop is executed 8 times
for i in range(8):
This request for float number
num = float(input())
If input is less than 10.5
if num < 10.5:
The sum is taken
total+=num
And count is incremented by 1
count+=1
The loop ends here
This calculates and prints the average
print("Average: ",total/count)
Implement a class named MyArrayList that extends class the java.util. ArrayList. The class MyArrayList overrides the add(obj) method in the following way: it adds obj into the list if the object does not occur in the list or it occurs in the list only once; otherwise, if the object occurs in the list more than once, then the method does nothing.
Answer:
import java.util.ArrayList;
import java.util.Collections;
public class MyArrayList<T> extends ArrayList<T> {
public boolean add(T obj) {
if (Collections.frequency(this, obj) < 2) {
return super.add(obj);
}
return false;
}
}
Explanation:
According to the requirement, an element with the same value can occur at most twice in the list.
The Collections.frequency utility is useful to count the occurrances.
Sure, here's an implementation of the `MyArrayList` class that extends `java.util.ArrayList` and overrides the `add` method as described:
```java
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class MyArrayList<E> extends ArrayList<E> {
"ATTHERATE"Override
public boolean add(E obj) {
// Count occurrences of each element in the list
Map<E, Integer> countMap = new HashMap<>();
for (E element : this) {
countMap.put(element, countMap.getOrDefault(element, 0) + 1);
}
// Check if obj occurs in the list only once or not at all
if (!countMap.containsKey(obj) || countMap.get(obj) == 1) {
return super.add(obj);
}
// If obj occurs more than once, do nothing
return false;
}
}
```
In this implementation, the `add` method first counts the occurrences of each element in the list using a `HashMap`.
Then, it checks whether the given object `obj` occurs only once or not at all in the list. If so, it adds the object to the list using the `super.add(obj)` call.
If `obj` occurs more than once, the method does nothing by returning `false`. This way, the `MyArrayList` class ensures that duplicates are added only once, or not at all, as required.
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