Answer: D. all of the above are correct
Explanation:
The correct statements regarding the decentralized (distributed) access control on a LAN include:
• no centralized access process exists, and therefore each connected station has the responsibility for controlling its access
• data collisions are possible, therefore mechanisms such as CDMA/CD are required
• when a data collision occurs, the nearest station detecting the collision transmits a jamming signal.
Therefore, the correct option is all of the above.
Alice sends a message to Bob in a manner such that Bob is the only person who can tell what the real message is. Which security concept is this an example of
Answer:
confidentiality
Explanation:
Alice sends a message to Bob in a manner such that Bob is the only person who can tell what the real message is. Which security concept is this an example of
This type of security concept is an example of confidentiality. Thus, option B is correct.
What is security?Security is the capacity to withstand possible damage from other individuals by placing restrictions on their right to act freely. The term security is the absence of threat or a sense of safety.
Any uncovered danger or weakness in any technology that could be exploited by criminals to compromise equipment or knowledge is a security threat.
It has to do with Alice’s ability to decide on their own how if, and why people exploit individual data if it is being sent to bob. To ensure human rights, welfare, and consciousness, solitude must be protected. People are able to independently create their own personalities.
Therefore, option B is the correct option.
Learn more about security, here:
https://brainly.com/question/15278726
#SPJ2
The question is incomplete, the complete question is:
a. message integrity
b. confidentiality
c. availability
d. non-repudiation
e. authentication
You are given a sequence of n songs where the ith song is l minutes long. You want to place all of the songs on an ordered series of CDs (e.g. CD 1, CD 2, CD 3,... ,CD k) where each CD can hold m minutes. Furthermore, (1) The songs must be recorded in the given order, song 1, song 2,..., song n. (2) All songs must be included. (3) No song may be split across CDs. Your goal is to determine how to place them on the CDs as to minimize the number of CDs needed. Give the most efficient algorithm you can to find an optimal solution for this problem, prove the algorithm is correct and analyze the time complexity
Answer:
This can be done by a greedy solution. The algorithm does the following:
Put song 1 on CD1.
For song 1, if there's space left on the present CD, then put the song on the present CD. If not, use a replacement CD.
If there are not any CDs left, output "no solution".
Explanation:
The main thing is prove the correctness, do that by the "greedy stays ahead argument". For the primary song, the greedy solution is perfect trivially.
Now, let the optimal solution match the greedy solution upto song i. Then, if the present CD has space and optimal solution puts song (i+1) on an equivalent CD, then the greedy and optimal match, hence greedy is not any worse than the optimal.Else, optimal puts song (i + 1) on subsequent CD. Consider an answer during which only song (i + 1) is moved to the present CD and zip else is modified. Clearly this is often another valid solution and no worse than the optimal, hence greedy is not any worse than the optimal solution during this case either. This proves the correctness of the algorithm. As for every song, there are constantly many operations to try to do, the complexity is O(n).
For each of the following memory accesses indicate if it will be a cache hit or miss when carried out in sequence as listed. Also, give the value of a read if it can be inferred from the information in the cache.
Operation Address Hit? Read value (or unknown)
Read 0x834
Write 0x 836
Read 0xFFD
Answer:
Explanation:
Operation Address Hit? Read Value
Read 0x834 No Unknown
Write 0x836 Yes (not applicable)
Read 0xFFD Yes CO
Define a class named Point with two data fields x and y to represent a point's x- and y-coordinates. Implement the Comparable interface for the comparing the points on x-coordinates. If two points have the same x-coordinates, compare their y-coordinates. Define a class named CompareY that implements Comparator. Implement the compare method to compare two points on their y-coordinates. If two points have the same y-coordinates, compare their x-coordinates. Randomly create 100 points and apply the Arrays.sort method to display the points in increasing order of their x-coordinates, and increasing order of their y-coordinates, respectively.
Answer:
Here the code is given in java as follows,
Data representation and interactivity are important aspects of data visualization.
a. True
b. False
Answer:
a. True
Explanation:
Data visualization are defined as the representation of the data and information in graphical way. The data visualization tool uses charts, diagrams, graphs, maps, etc. to represent and visualized the information and understand the patter or trend in the data.
It is an effective way to interact with the user and works likes a form of a visual art.
Thus interactivity and data representations are the two important aspect of the data visualization.
Hence, the answer is true.
When implementing a 1:1 relationship, where should you place the foreign key if one side is mandatory and one side is optional? Should the foreign key be mandatory or optional?
Answer:
When implementing a 1:1 relationship, the foreign key should be placed on the optional side if one side is mandatory and one side is optional.
When this is implemented, the foreign key should be made mandatory.
Explanation:
A foreign key (FK) is a primary key (PK) in relational databases. It is used to establish a relationship with a table that has the same attribute with another table in the database. A mandatory relationship exists when the foreign key depends on the parent (primary key) and cannot exist without the parent. A one-to-one relationship exists when one row in a data table may be linked with only one row in another data table.
let's have a class named Distance having two private data members such as feet(integer), inches(float), one input function to input values to the data members, one Display function to show the distance. The distance 5 feet and 6.4 inches should be displayed as 5’- 6.4”. Then add the two objects of Distance class and then display the result (the + operator should be overloaded). You should also take care of inches if it's more than 12 then the inches should be decremented by 12 and feet to be incremented by 1.
Answer:
Humildade
Ser justo (Fair Play)
Vencer independente
How did the military in the early 1900s move resources?
engines.
In the early 1900s, military moved their resources to distant locations with the help of
Answer:
In the early 1900s, military moved their resources to distant locations with the help of trains, ships, and, to a lesser extent, horse-drawn wagons. This was so because at that time airplanes did not yet exist, capable of transporting inputs to any part of the world in a very short period of time. Therefore, inputs and resources were brought by sea and, if impossible, through land, using railways or highways.
Computer data that is suitable for sound
Answer:
Answer:In this context sound data is stored and transmitted in an analog form. Since computers represent data in digital form, (as bits and bytes) the
Complete the AscendingAndDescending application so that it asks a user to enter three integers. Display them in ascending and descending order.An example of the program is shown below:Enter an integer... 1 And another... 2 And just one more... 3 Ascending: 1 2 3 Descending: 3 2 1GradingWrite your Java code in the area on the right. Use the Run button to compile and run the code. Clicking the Run Checks button will run pre-configured tests against your code to calculate a grade.Once you are happy with your results, click the Submit button to record your score.
Answer:
Following are the solution to the given question:
import java.util.Scanner;//import package
public class AscendingAndDescending//defining a class AscendingAndDescending
{
public static void main(String[] args) //main method
{
int n1,n2,n3,min,max,m;
Scanner in = new Scanner(System.in);//creating Scanner class object
System.out.print("Enter an integer: ");//print message
n1 = in.nextInt();//input value
System.out.print("And another: ");//print message
n2 = in.nextInt();//input value
System.out.print("And just one more: ");//print message
n3 = in.nextInt();//input value
min = n1; //use min variable that holds value
max = n1; //use mix variable that holds value
if (n2 > max) max = n2;//use if to compare value and hols value in max variable
if (n3 > max) max = n3;//use if to compare value and hols value in max variable
if (n2 < min) min = n2;//use if to compare value and hols value in min variable
if (n3 < min) min = n3;//use if to compare value and hols value in min variable
m = (n1 + n2 + n3) - (min + max);//defining m variable that arrange value
System.out.println("Ascending: " + min + " " + m + " " + max);//print Ascending order value
System.out.println("Descending: " + max + " " + m + " " + min);//print Descending order value
}
}
Output:
Enter an integer: 8
And another: 9
And just one more: 7
Ascending: 7 8 9
Descending: 9 8 7
Explanation:
In this program inside the main method three integer variable "n1,n2, and n3" is declared that inputs value from the user end and also defines three variable "min, max, and m" that uses the conditional statement that checks inputs value and assigns value according to the ascending and descending order and prints its values.
You are developing a Windows forms application used by a government agency. You need to develop a distinct user interface element that accepts user input. This user interface will be reused across several other applications in the organization. None of the controls in the Visual Studio toolbox meets your requirements; you need to develop all your code in house.
Required:
What actions should you take?
Answer:
The answer is "Developing the custom control for the user interface"
Explanation:
The major difference between customized control & user control would be that it inherit throughout the inheritance tree at different levels. Usually, a custom power comes from the system. Windows. UserControl is a system inheritance.
Using accuracy up is the major reason for designing a custom UI control. Developers must know how to use the API alone without reading the code for your component. All public methods and features of a custom control will be included in your API.
solve(-8/3)+7/5 please answer
Answer:
hope this will help you more
Hey ! there
Answer:
-19/15 is the answerExplanation:
In this question we are given two fraction that are -8/3 and 7/5. And we have asked to add them .
Solution : -
[tex]\quad \: \dashrightarrow \qquad \: \dfrac{ - 8}{3} + \dfrac{7}{5} [/tex]
Step 1 : Taking L.C.M of 3 and 5 , We get denominator 15 :
[tex]\quad \: \dashrightarrow \qquad \: \dfrac{ - 8(5) + 7(3)}{15} [/tex]
Step 2 : Multiplying -8 with 5 and 7 with 3 :
[tex]\quad \: \dashrightarrow \qquad \: \dfrac{ - 40 + 21}{15} [/tex]
Step 3 : Solving -40 and 21 :
[tex]\quad \: \dashrightarrow \qquad \: \red{\underline{ \boxed{ \frak{\dfrac{ - 19}{15} }}}} \quad \bigstar[/tex]
Henceforth , -19/15 is the answer .#Keep LearningThe computer that is used in scientific research is ........
Answer:
supercomputers are the computer that is used in scientific research.
Answer:
super computer is the right answer
Write a method swapArrayEnds() that swaps the first and last elements of its array parameter. Ex: sortArray
I understand you want a function that swaps the first and last element of an array so that the first element takes the last one's value and vice versa.
Answer and Explanation:
Using Javascript programming language:
function swapArrayEnds(sortArray){
var newArray= sortArray.values();
var firstElement=newArray[0];
newArray[0]=newArray[newArray.length-1];
newArray[newArray.length-1]=firstElement;
return newArray;
}
var exampleArray=[2, 5, 6, 8];
swapArrayEnds(exampleArray);
In the function above we defined the swapArray function by passing an array parameter that is sorted by swapping its first and last element. We first get the elements of the arrayvusing the array values method. We then store the value of the first element in the variable firstElement so that we are able to retain the value and then switch the values of the first element before using the firstElement to switch value of the last element. We then return newArray and call the function.
command create database in oracle database ::((
Answer:
kdkskskiisidiodoosooddodod
Assume myString and yourString are variables of type String already declared and initialized. Write ONE line of code that sets yourString to the first character and the last character of myString added to myString variable.
Answer:
line of code :
newString=myString+myString.charAt(0)+myString.charAt(myString.length()-1);
Explanation:
In Java, the + is used for concatenation
method
charAt() will return the character from the given index from string
myString.charAt(0) will return E
myString.charAt(myString.length()-1)
That's the code that's was already provided with the assignment
// Program takes a hot dog order
// And determines price
using System;
using static System.Console;
class DebugFour1
{
static void Main()
{
const double BASIC_DOG_PRICE = 2.00;
const double CHILI_PRICE = 0.69;
const double CHEESE_PRICE = 0.49;
String wantChili, wantCheese;
double price;
Write("Do you want chili on your dog? ");
wantChilli = ReadLine();
Write("Do you want cheese on your dog? ");
wantCheese = ReadLine();
if(wantChili = "Y")
if(wantCheese = "Y")
price == BASIC_DOG_PRICE + CHILI_PRICE + CHEESE_PRICE;
else
price == BASIC_DOG_PRICE + CHILI_PRICE;
else
if(wantCheese = "Y")
price = BASIC_DOG_PRICE;
else
price == BASIC_DOG_PRICE;
WriteLine("Your total is {0}", price.ToString("C"));
}
}
Answer:
Code:-
// Program takes a hot dog order
// And determines price
using System;
using static System.Console;
class DebugFour1
{
static void Main()
{
const double BASIC_DOG_PRICE = 2.00;
const double CHILI_PRICE = 0.69;
const double CHEESE_PRICE = 0.49;
String wantChili, wantCheese;
double price;
Write("Do you want chili on your dog? ");
wantChili = ReadLine();
Write("Do you want cheese on your dog? ");
wantCheese = ReadLine();
if (wantChili == "Y")
{
if (wantCheese == "Y")
price = BASIC_DOG_PRICE + CHILI_PRICE + CHEESE_PRICE;
else
price = BASIC_DOG_PRICE + CHILI_PRICE;
}
else
{
if (wantCheese == "Y")
price = BASIC_DOG_PRICE + CHEESE_PRICE;
else
price = BASIC_DOG_PRICE;
}
WriteLine("Your total is {0}", price.ToString("C"));
}
}
Can anyone decipher these? There a bit random. Maybe binary but if there are other ways please include them.
Answer:
Explanation:
so this is what "format" is about, it's saying what do the ones and zeros represent. b/c the bits can represent lots of different things , like letters with ascii code , and that's got several types. some are 8 bits, some are 16 bits, the questions you've shown are in groups of 5 which is really not a "thing" in binary, it's always by twos, without some type of "frame work" around the bits, we won't know what they represent, if that is helping? the important part is what is the "frame work" that these bits are in.
all of your questions seem to have some "art" thing going on, they make some kinda of binary artwork, for what they are saying, that's not what's important. Other than if they form palindromes, maybe that's what the questions are really about, how these do from palindromes, that is, they read the same backwards as forwards... I know.. why would anyone read backwards.. but a computer can do that pretty quickly, sooo sometimes to check, it will read forwards and backwards.. but when there is a palindrome, the computer is "confused"
this is also a big big part of "typing" not like on a keyboard but when you program, and you say that your variables are of a certain type, like a char, or a string, or a double, you are specifying how many bits will be used to represent your data. so then when you put the ones and zeros into the memory , ( think RAM) then it's stored in groups of what ever size you've determined. hmmmm does this help?
Add (total) all the number in the list (below) using a for loop, but skip over the number at index 3.
numbers = [10,20,30,40,50,60,100]
Answer:
The program in Python is as follows:
numbers = [10,20,30,40,50,60,100]
total = 0
for i in range(len(numbers)):
if i != 3:
total+=numbers[i]
print(total)
Explanation:
This initializes the list
numbers = [10,20,30,40,50,60,100]
Set total to 0
total = 0
This iterates through numbers
for i in range(len(numbers)):
This ensures that the index 3, are not added
if i != 3:
total+=numbers[i]
Print the calculated sum
print(total)
A small company with 100 computers has hired you to install a local area network. All fo the users perform functions like email, browsing and Office software. In addition, 25 of them also do a large number of client/server requests into a database system. Which local area network operating system would you recommend?
Answer:
Based on the requirements indicated in the question above, the best Local Area Network (LAN) operating system that can be used is
Windows 7 , 8.1 or Windows 10. This is because they all are configured to handle extensive LAN activity and can connect over 200 users.
Explanation:
Generally speaking, Windows 10 packs more improvement over the previous windows.
Cheers
provides an automated method for discovering host systems on a network. Although it doesn't necessarily discover all weaknesses, it does determine which systems are active on the network and what services they offer or what ports are available
Answer:
Network scan
Explanation:
Cyber security can be defined as preventive practice of protecting computers, software programs, electronic devices, networks, servers and data from potential theft, attack, damage, or unauthorized access by using a body of technology, frameworks, processes and network engineers.
Some examples of cyber attacks are phishing, zero-day exploits, denial of service, man in the middle, cryptojacking, malware, SQL injection, spoofing etc.
Generally, a security assessment is carried out by network security experts on a regular basis to determine potential loopholes or vulnerabilities in the information and technology (IT) infrastructure. One of the techniques or approach used in security assessment is a network scan.
A network scan is a security assessment technique used for the automatic detection of host systems on a network. Although a network scan isn't capable of discovering or detecting all the weaknesses on a network, it avails users information about the computer systems that are active on the network and what services the computer systems offer or what ports are available on them.
Tips for Interactions with Personalized LinkedIn Outreach?
Answer:
Follow the best strategies for personalized LinkedIn outreach through 2021.
Run an Outreach Campaign for niche-specific People Collect Data about your Audience Keep your message short Save your Sale Pitches for later Give them a reason to reply to you
What is machine learning
Answer:
machine learning is the ability for computers to develop new skills and algorithms without specific instructions to do so.
Connie works for a medium-sized manufacturing firm. She keeps the operating systems up-to-date, ensures that memory and disk storage are available, and oversees the physical environment of the computer. Connie is employed as a __________. Hardware Engineer Computer Operator Database Administrator Computer Engineer
Answer: Computer operator
Explanation:
Following the information given, we can deduce that Connie is employed as a computer operator. A computer operator is a role in IT whereby the person involved oversees how the computer systems are run and also ensures that the computers and the machines are running properly.
Since Connie keeps the operating systems up-to-date, ensures that memory and disk storage are available, and oversees the physical environment of the computer, then she performs the role of a computer operator.
Can you suggest a LinkedIn Helper (automation tool) alternative?
Answer:
Have you tried LinkedCamp alternative to LinkedIn Helper?
Well, LinkedCamp is a super-efficient cloud-based LinkedIn Automation Tool that empowers businesses and sales industries to drive more LinkedIn connections, hundreds of leads, sales, and conversions automatically.
Some other LinkedIn automation tools are:
Meet Alfred Phantombuster WeConnect ZoptoExpandiHope you find it useful.
Good luck!
..............is a piece of hardware used to provide data and instructions to a computer used for interaction and control. *
Output device.
Processing.
input device.
All of above.
Answer:
output
Explanation:
it can be seen and touched
Print the two strings in alphabetical order. Assume the strings are lowercase. End with newline. Sample output: capes rabbits import java.util.Scanner: public class OrderStrings { public static void main (String args) { String firstString: String secondString: firstString = "rabbits" secondString = "capes" /*Your solution goes here */ return: } }import java.util.Scanner;public class OrderStrings { public static void main(String[] args) { String firstString; String secondString; firstString = "rabbit"; secondString= "capes"; //String class in java provide string comparison function, use it, and get //your work done may even use brute force i.e using for loop and compare character by // character which will not good for the programming language which already have vast //predefined number of functions if(firstString.compareTo(secondString) < 0){ System.out.println(firstString + " " + secondString); } else{ System.out.println(secondString + " " + firstString); } return; }}
Answer:
Following are the code to the given question:
import java.util.Scanner;//import package
public class OrderStrings // defining a class OrderStrings
{
public static void main(String[] args) //defining a main method
{
Scanner scnr = new Scanner(System.in);//defining a Scanner class object
String firstString;//defining a String variable
String secondString; //defining a String variable
firstString = scnr.next();//input value
secondString = scnr.next();//input value
if (firstString.compareTo(secondString) < 0)//use if to compare sting value
System.out.println(firstString + " " + secondString);//print sting value
else//else block
System.out.println(secondString + " " + firstString);//print sting value
}
}
Output:
rabbits capes
capes rabbits
Explanation:
In this code a class "OrderStrings" is defined inside the class the main method is defined that declares the two string variable that uses the input method to input the string value and after input, it uses the conditional statement. Inside this compareTo method is declared that compare string value and prints the string value.
Please use thread to complete the following program: one process opens a file data.txt, then creates a thread my_thread. The job of the thread my_thread is to count how many lines exist in the file data.txt, and return the number of lines to the calling process. The process then prints this number to the screen.
Basically, you need to implement main_process.c and thread_function.c.
Basic structure of main_process.c:
int main ()
{
Open the file data.txt and obtain the file handler fh;
Create a thread my_thread using pthread_create; pass fh to my_thread;
Wait until my_thread terminates, using pthread_join;
Print out how many lines exist in data.txt.}
Basic structure of thread_function.c:
void *count_lines(void *arg)
{
Obtain fh from arg;
Count how many lines num_lines exist in fh;
Close fh;
Return num_lines
}
Answer:
Here is the code:-
//include the required header files
#include<stdio.h>
#include<pthread.h>
// method protocol definition
void *count_lines(void *arg);
int main()
{
// Create a thread handler
pthread_t my_thread;
// Create a file handler
FILE *fh;
// declare the variable
int *linecnt;
// open the data file
fh=fopen("data.txt","r");
// Create a thread using pthread_create; pass fh to my_thread;
pthread_create(&my_thread, NULL, count_lines, (void*)fh);
//Use pthread_join to terminate the thread my_thread
pthread_join( my_thread, (void**)&linecnt );
// print the number of lines
printf("\nNumber of lines in the given file: %d \n\n", linecnt);
return (0);
}
// Method to count the number of lines
void *count_lines(void *arg)
{
// variable declaration and initialization
int linecnt=-1;
char TTline[1600];
//code to count the number of lines
while(!feof(arg))
{
fgets(TTline,1600,arg);
linecnt++;
}
pthread_exit((void *)linecnt);
// close the file handler
fclose(arg);
}
Explanation:
Program:-
Write a partial class that shows a class constant and an instance method. Write an instance method that converts feet to inches using a class constant representing the number of inches in one foot. The value passed to the method represents the distance in feet.
Answer:
Please the code snippet below, the code was writen in Kotlin Language
Explanation:
const val inches:Int= 12 . //This is the const value
fun main(args: Array<String>) {
//this will ask the user for input
print("Enter a number")
//this will do the conversion
var valueInFeet= Integer.valueOf(readLine())*inches
print("The value in feet is $valueInFeet feet(s)")
}
Which of the following was one reason why electronic (computer-based) information sharing was challenging in the not too distant past?
a. Individuals and/or members of organizations did not speak the same language.
b. Hardware and software applications on either end could not talk to one another.
c. The most powerful computers were owned by large companies.
d. Organizations needed to protect information for competitive advantage.
Answer:
B. Hardware and software applications on either end could not talk to one another.
Explanation:
The answer to this question is that making connection to the internet used to be very slow, it's operation was difficult and so was its maintenance. Therefore they could be said to be unreliable at the time making electronic information sharing difficult as well as challenging. From this explanation the right answer to this question is answer option b.
Thank you.