Answer:
Explanation:
Important functions of an operating System:
Security –
The operating system uses password protection to protect user data and similar other techniques. it also prevents unauthorized access to programs and user data.
Control over system performance –
Monitors overall system health to help improve performance. records the response time between service requests and system response to have a complete view of the system health. This can help improve performance by providing important information needed to troubleshoot problems.
Job accounting –
Operating system Keeps track of time and resources used by various tasks and users, this information can be used to track resource usage for a particular user or group of user.
Error detecting aids –
Operating system constantly monitors the system to detect errors and avoid the malfunctioning of computer system.
Coordination between other software and users –
Operating systems also coordinate and assign interpreters, compilers, assemblers and other software to the various users of the computer systems.
Memory Management –
The operating system manages the Primary Memory or Main Memory. Main memory is made up of a large array of bytes or words where each byte or word is assigned a certain address. Main memory is a fast storage and it can be accessed directly by the CPU. For a program to be executed, it should be first loaded in the main memory. An Operating System performs the following activities for memory management:
It keeps tracks of primary memory, i.e., which bytes of memory are used by which user program. The memory addresses that have already been allocated and the memory addresses of the memory that has not yet been used. In multi programming, the OS decides the order in which process are granted access to memory, and for how long. It Allocates the memory to a process when the process requests it and deallocates the memory when the process has terminated or is performing an I/O operation.
Processor Management –
In a multi programming environment, the OS decides the order in which processes have access to the processor, and how much processing time each process has. This function of OS is called process scheduling. An Operating System performs the following activities for processor management.
Keeps tracks of the status of processes. The program which perform this task is known as traffic controller. Allocates the CPU that is processor to a process. De-allocates processor when a process is no more required.
Device Management –
An OS manages device communication via their respective drivers. It performs the following activities for device management. Keeps tracks of all devices connected to system. designates a program responsible for every device known as the Input/Output controller. Decides which process gets access to a certain device and for how long. Allocates devices in an effective and efficient way. Deallocates devices when they are no longer required.
File Management –
A file system is organized into directories for efficient or easy navigation and usage. These directories may contain other directories and other files. An Operating System carries out the following file management activities. It keeps track of where information is stored, user access settings and status of every file and more… These facilities are collectively known as the file system.
uuhdcnkhbbbbhbnbbbbnnnnnnnnnfddjkjfs
Answer:
The answer is "Option c"
Explanation:
In PHP to remove all the session variables, we use the session_destroy() function. It doesn't take any argument is required and then all sessions variables could be destroyed by a single call. If a particular clinical variable is now to be destroyed, the unset() function can be applied to unset a session variable. Its session doesn't unset or unset the session cookie by either of the local variables associated with it.
Jessica sees a search ad on her mobile phone for a restaurant. A button on the ad allows Jessica to click on the button and call the restaurant. This is a(n) Group of answer choices product listing ad (PLA) dynamic keyword insertion ad (DKI) click-to-call ad call-to-action ad (CTA)
It’s a click-to-call ad
To connect several computers together, one generally needs to be running a(n) ____ operating system
a. Network
b. Stand-alone
c. Embedded
d. Internet
Answer. Network
Explanation:
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
Use NAND operator to write; P or Q, and P -Q make an everyday implication sentence using only NAND
Answer:
Hence the answer is given as follows,
Explanation:
By using the NAND operator:-
P or Q and P -Q make an everyday implication sentence using the only NAND is given as,
What is the future of marketing automation?
Answer:
give me number I will explain fast I am free now reply bro I am waiting
Answer:
To put it into simple words: the future of marketing automation is customers centric.
From data collection to lead generation, marketing automation will stay B2B marketers’ favorite in the future. Based on the current analytics, let’s have a look at how automation is driving lead generation today as well as what’s to come.
It’s going to be all about customersPersonalization will become even more importantMore Jobs and Activities Will Require Marketing AutomationGeneric Content Will Become Almost Non-ExistentMarketers Should Stay Current With Marketing Automation for Maximum ROIMarketing automation is a dynamic field and it will continue to evolve and transform processes in the future. If you in the marketing frontier, and looking to transform your lead generation processes, don’t be afraid to give marketing automation a shot.
Use Python.
Complete reverse() method that returns a new character array containing all contents in the parameter reversed.
Ex: If the input array is:
['a', 'b', 'c']
then the returned array will be:
['c', 'b', 'a']
import java.util.*;
public class LabProgram {
// This method reverses contents of input argument arr.
public static char[] reverse(char[] arr) {
/* Type your code here. */
}
public static void main(String[] args) {
char [] ch = {'a','b','c'};
System.out.println(reverse(ch)); // Should print cba
}
}
Answer:
Explanation:
The code in the question is written in Java but If you want it in Python then it would be much simpler. The code below is writen in Python and uses list slicing to reverse the array that is passed as an argument to the function. The test case from the question was used and the output can be seen in the attached image below.
def reverse(arr):
reversed_arr = arr[::-1]
return reversed_arr
When computer users have trouble with their machines or software, Roland is the first person they call for help. Roland helps users with their problems, or refers them to a more-experienced IT employee. Roland holds the position of __________ in the organization. Support Analyst Systems Analyst Network Administrator Database Administator
Answer:
The correct answer is A) Support Analyst
Explanation:
From the question, we can see that Roland is familiar with both machines and software. He is familiar with the operations of both parts of a computer to the end that he can attempt a fix. And if he can't he knows who to refer the end-users to. Usually, some IT personnel that is more experienced.
From the above points, we can safely say that Roland is an IT Support Analyst. He cannot be the Systems analyst because Systems Analysts are usually at the top of the Pyramid. They take on problems that are referred upwards to them from support analysts.
Cheers
Write a Java code statement for each of following:
a) To declare TWO (2) decimal numbers, and ONE (1) whole number.
Answer:
double decimal1, decimal2;
int whole;
Explanation:
Required
Declare 2 decimals and 1 int.
The syntax to declare a variable is:
data-type variable-name;
To declare decimal, we simply make use of double or float data types.
So, we have:
double decimal1, decimal2; ----> for the decimal variables
And
int whole; ---- for the whole number
Select the true statement about network protocols.
A. Communication cannot take place unless the protocol is executed in the same way on all devices.
B. One function of a protocol is to decompress data when it is delivered to the receiving computer.
C. Using a protocol other than TCP/IP can result in data loss.
D. Computers that are distributed across a large geographic area need a special protocol to resolve errors.
The statement that is true about network protocols is that:
Using a protocol other than TCP/IP can result in data loss.What are network protocols?A network protocol is a system of principles that governs how data is delivered between devices on the same network.
Primarily, it enables linked devices to interact with one another despite variations in internal operations, architecture, or design.
The way this is done is true the use of Transmission-control protocol/Internet protocol (TCP/IP).
TCP/IP is the primary protocol or communication language of the Internet. Therefore, using a protocol other than TCP/IP can result in data loss.
Learn more about network protocol here:
https://brainly.com/question/17820678
how much is this worth in dollars
Answer:
This is worth 50 dollars.
Explanation:
١ - one
٢ - two
٣ - three
٤ - four
٥ - five
٦ - six
٧ - seven
٨ - eight
٩ - nine
٠ - zero
What you see above is the ten digits in Arabic.
Both 5 (٥) and 0 (٠) appear here, thus representing 50.
information technology please help
Answer:
Read Technical Books. To improve your technical skills and knowledge, it's best to read technical books and journals. ...
Browse Online Tutorials. ...
Build-up online profile. ...
Learn new Tools. ...
Implement what you learned. ...
Enrich your skillset. ...
Try-out and Apply.
The fastest way to pull financial data from the application into Excel as refreshable formulas that can be edited or updated is:
Answer:
Download the financial report as =FDS codes with cell referencing.
Explanation:
An excel is a spreadsheet that is developed by the Microsoft company for the Windows operating system. It can be also used in iOS, macOS and Android. It has many features including graphing tools, calculation, pivot tables, etc.
In excel the fastest way to pull out a financial data from an application into the Excel as the refreshable formulas which can be edited or can be uploaded later on is by downloading the financial report as an +FDS code with the cell referencing.
In excel, cell refreshing is a way to refer to a cell in the formula.
Spending plans serve as a tool to analyze program execution, an indicator of potential problems, and a predictor of future program performance. True False
Answer:
True
Explanation:
Spending plans serve as a tool to analyze program execution, an indicator of potential problems, and a predictor of future program performance.
Preserving confidentiality, integrity, and availability is a restatement of the concern over interruption, interception, modification, and fabrication.
i. Briefly explain the 4 attacks: interruption, interception, modification, and fabrication.
ii. How do the first three security concepts relate to these four attacks
Answer and Explanation:
I and II answered
Interruption: interruption occurs when network is tampered with or communication between systems in a network is obstructed for illegitimate purposes.
Interception: interception occurs when data sent between systems is intercepted such that the message sent to another system is seen by an unauthorized user before it reaches destination. Interception violates confidentiality of a message.
Modification: modification occurs when data sent from a system to another system on the network is altered by an authorized user before it reaches it's destination. Modification attacks violate integrity, confidentiality and authenticity of a message.
Fabrication: fabrication occurs when an unauthorized user poses as a valid user and sends a fake message to a system in the network. Fabrication violates confidentiality, integrity and authenticity.
A coin is tossed repeatedly, and a payoff of 2n dollars is made, where n is the number of the toss on which the first Head appears. So TTH pays $8, TH pays $4 and H pays $2. Write a program to simulate playing the game 10 times. Display the result of the tosses and the payoff. At the end, display the average payoff for the games played. A typical run would be:
Answer:
Explanation:
The following code is written in Java. It creates a loop within a loop that plays the game 10 times. As soon as the inner loop tosses a Heads (represented by 1) the inner loop breaks and the cost of that game is printed to the screen. A test case has been made and the output is shown in the attached image below.
import java.util.Random;
import java.util.Scanner;
class Brainly {
public static void main(String[] args) {
int count = 0;
int loopCount = 0;
while (loopCount < 10) {
while (true) {
Random rand = new Random();
int coinFlip = rand.nextInt(2);
count++;
if (coinFlip == 1) {
System.out.println("Cost: $" + 2*count);
count = 0;
break;
}
loopCount++;
}
}
}
}
A computer with a five-stage pipeline deals with conditional branches by stalling for the next three cycles after hitting one. How much does stalling hurt the performance if 20% of all instructions are conditional branches
Answer:
The stalling hurt the performance by 60%.
Explanation:
This can be calculated as follows:
Value of CPI ideally taken by pipeline = 1
From the question, we are given:
Stall frequency = 20%,
Number of frequency = 3
Therefore, we have:
Cycles per instruction (CPI) of the architecture = Value of CPI ideally taken by pipeline + (Stall frequency * Number of frequency) = 1 + (20% * 3) = 1.60
Amount by which the stalling hurt the performance = Cycles per instruction (CPI) of the architecture Value of CPI ideally taken by pipeline = 1 - 0.60 = 0.60, or 60%
Therefore, the stalling hurt the performance by 60%.
Many companies possess valuable information they want to guard closely (ex. new chip design, competition plans, legal documents). Personal computer hard disks these days are full of important photos, videos, and movies. As more and more information is stored in computer systems, the need to protect it is becoming increasingly important. Which of the following statements is incorrect with respect to Security?
a. security has many facets; three of the more important ones are: the nature of the threats, the nature of intruders, and cryptography
b. data integrity means that unauthorized users should not be able to modify any data without the owner's permission
c. a common category of intruders are driven by determined attempts to make money; for example: bank programmers attempting to steal from the bank they work for
d. in addition to threats caused by malicious users, data can be lost by accident; for example: rats gnawing backup tapes
Answer: D. in addition to threats caused by malicious users, data can be lost by accident; for example: rats gnawing backup tapes
Explanation:
Data security is essential to protecting unwanted people from having access to ones data, malicious attack should also be prevented and unusual behavior should be monitored.
Data security has many facets such as threat nature, the nature of intruders, and cryptography. Furthermore, data integrity means that unauthorized users should not be able to modify any data without the owner's permission. Also, the statement that a common category of intruders are driven by determined attempts to make money; for example: bank programmers attempting to steal from the bank they work for is correct.
It should be no noted that rats gnawing backup tapes cannot prevent data loss. Therefore, the correct option is D
Show the result of inserting 10, 12, 1, 14, 6, 5, 8, 15, 3, 9, 7, 4, 11, 13, and 2, one at a time, into an initially empty binary heap. b. Show the result of using the linear-time algorithm to build a binary heap using the same input.
Show the result of performing three deleteMin operations in the heap of the previous exercise.
Answer:
Explanation:
A)
10 10 10 1 1
/ / \ --> / \ / \
12 12 1 12 10 12 10
/
14
1 1 1 1
/ \ / \ / \ / \
12 10 --> 6 10 6 10 --> 6 5
/ \ / \ / \ / / \ /
14 6 14 12 14 12 5 14 12 10
1 1 1 1
/ \ / \ / \ / \
6 5 6 5 6 5 --> 3 5
/ \ / \ / \ / \ / \ / \ / \ / \
14 12 10 8 14 12 10 8 14 12 10 8 6 12 10 8
/ / \ / \
15 15 3 15 14
After inserting all 1
/ \
3 2
/ \ / \
6 7 5 4
/ \ / \ / \ / \
15 14 12 9 10 11 13 8
b)
First level build : 10
/ \
12 1
/ \ / \
14 6 5 8
/ \ / \ / \ / \
15 3 9 7 4 11 13 2
Heap bottom level: 10
/ \
12 1
/ \ / \
3 6 4 2
/ \ / \ / \ / \
15 14 9 7 5 11 13 8
Heap next level up: 10
/ \
3 1
/ \ / \
12 6 4 2
/ \ / \ / \ / \
15 14 9 7 5 11 13 8
Final heap: 1
/ \
3 2
/ \ / \
12 6 4 8
/ \ / \ / \ / \
15 14 9 7 5 11 13 10
c)
Duing the first time,
First, assume the last element, the 8, is at the root and bubble down.
Then, assume the last element, the 13, is at the root and bubble down.
Then, assume the last element, the 11, is at the root and bubble down.
Final heap:
4
/ \
6 5
/ \ / \
13 7 10 8
/ \ / \ /
15 14 12 9 11
In the next iteration,
First, assume the last element, the 10, is at the root and bubble down.
Then, assume the last element, the 13, is at the root and bubble down.
Then, asssume the last element, the 11, is at the root and bubble down.
So, after performing all operations, the heap looks like below:
4
/ \
6 5
/ \ / \
12 7 10 8
/ \ / \ /
15 14 9 13 11
A retail department store is approximately square, 35 meters (100 feet) on each side. Each wall has two entrances equally spaced apart. Located at each entrance is a point-of-sale cash register. Suggest a local area network solution that interconnects all eight cash registers. Draw a diagram showing the room, the location of all cash registers, the wiring, the switches, and the server. What type of wiring would you suggest?
Answer:
The use of twisted pair cable ( category 5e/6 ) to connect the computers on each register and also the use of switches to connect each register to the server
Explanation:
The local area network ( LAN ) solution that will be used to interconnect all the POS registers is ; The use of twisted pair cable ( category 5e/6 ) to connect the computers on each register and also the use of switches to connect each register to the server .
This is because category 5e/6 twisted pair cable has a data rate transfer of up to 10 Mbps and it is best used for LAN connections
while The function of the three switches is to connect each cash register to the the central server been used .
attached below is a schematic representation
What variable(s) is/are used in stack to keep track the position where a new item to be inserted or an item to be deleted from the stack
Answer:
Hence the answer is top and peek.
Explanation:
In a stack, we insert and delete an item from the top of the stack. So we use variables top, peek to stay track of the position.
The insertion operation is understood as push and deletion operation is understood as entering stack.
Hence the answer is top and peek.
9.17 LAB: Acronyms An acronym is a word formed from the initial letters of words in a set phrase. Write a program whose input is a phrase and whose output is an acronym of the input. If a word begins with a lower case letter, don't include that letter in the acronym. Assume there will be at least one upper case letter in the input.
Answer:
Hence the code is given as follows,
import java.util.Scanner;
public class LabProgram {
public static String createAcronym(String userPhrase){
String result = "";
String splits[] = userPhrase.split(" ");
for(int i = 0;i<splits.length;i++){
if(splits[i].charAt(0)>='A' && splits[i].charAt(0)<='Z')
result += splits[i].charAt(0);
}
return result;
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
String s = scan.nextLine();
System.out.println(createAcronym(s));
}
}
command create database in oracle database ::((
Answer:
kdkskskiisidiodoosooddodod
Illustrate why Sally's slide meets or does not meet professional expectations?
Describe all the things Sally can improve on one of her slides?
Suggest some ways Sally can learn more PowerPoint skills.
The correct answer to this open question is the following.
Unfortunately, you did not provide any context or background about the situation of Sally and the problem with her slides. We do not know it, just you.
However, trying to be of help, we can comment on the following general terms.
When someone does not meet professional expectations, this means that this individual did not prepare her presentation, lacked technical skills, did not included proper sources, or missed the proper visual aids to make the presentation more attractive and dynamic.
What Sally can improve about her slides is the following.
She can design a better structure for the presentation to have more congruence.
Sally has to clearly establish the goal or goals for her presentation.
She has to add many visuals instead of plain text. This way she can better capture the interest of her audience.
If she can use more vivid colors instead of pale or dark ones, that would be best.
No paragraphs unless necessary. She better uses bullet points.
Take care of the tone of her voice. During her practice, she can record her vice to check how it sounds.
RecursionexerciseCOP 3502; Summer2021We have gone through many examples in the class and those examples are available in the slides and uploaded codes. Try to test those codes and modify as you wish for getting more clarification.In additiontry the following:---------------------------------------------------------------------------------------------------------------------------------------1.What would be the output of the following recursive function if we call rec2(5)
Answer:
The output is:
1 2 3 4 5
Explanation:
Given
See attachment for code segment
Required
The output of rec2(5)
From the attached code segment, we have the following:
The base case: if (x==0){ return;}
The above implies that, the recursion ends when the value of x gets reduced to 0
The recursion:
rec2(x-1); ---- This continually reduces x by 1 and passes the value to the function
printf("%d ", x); This prints the passed value of x
Hence, the output of rec2(5) is: 1 2 3 4 5
2.2 Write a program that uses input to prompt a user for their name and then welcomes them. Note that input will pop up a dialog box. Enter Sarah in the pop-up box when you are prompted so your output will match the desired output.
Answer:
Explanation:
The following program is written in Javascript. It creates a prompt that asks the user for his/her name and saves it in a variable called userName. Then it uses that variable to welcome the user. A test case is shown in the images below with the desired output.
let userName = prompt("Enter Your Name")
alert(`Hello ${userName}`)
Database multiple-choice question don't bs pls
Which of the following is not a common factor for database management system selection?
a. Cost
b. Features and tools
c. Software requirements
d. Hardware requirements
e. All of the above
f. None of the above
(D and F are wrong)
Answer:
f. None of the above
Explanation:
Considering the available options, the right answer is option F "None of the above."
Common factors for database management system selection are the following:
1. Cost: various DBMS vendors have different pricing, hence, interested buyers will consider the price before selections
2. Features and Tools: different types of DBMS have varied features and tools in carrying out the work.
3. Software requirements: there are various software requirements in various DBMS, such as encryption support, scalability, application-level data recovery, etc.
4. Hardware requirement: various DBMS vendors have different hardware requirements to consider, such as sizeable RAM, CPU value, etc.
Hence, in this case, the correct answer is option F.
You have recently subscribed to an online data analytics magazine. You really enjoyed an article and want to share it in the discussion forum. Which of the following would be appropriate in a post?
A. Including an advertisement for how to subscribe to the data analytics magazine.
B. Checking your post for typos or grammatical errors.
C. Giving credit to the original author.
D. Including your own thoughts about the article.
Select All that apply
Answer:
These are the things that are would be appropriate in a post.
B. Checking your post for typos or grammatical errors.
C. Giving credit to the original author.
D. Including your own thoughts about the article.
Explanation:
The correct answer options B, C, and D" According to unofficial online or internet usage it is believed that sharing informative articles is a reasonable use of a website forum as much the credit goes back to the actual or original author. Also, it is believed that posts should be suitable for data analytics checked for typos and grammatical errors.
HELP ASAP PLZZZZZ
Question 35(Multiple Choice Worth 5 points)
(03.01 LC)
To write a letter to your grandma using Word Online, which document layout should you choose?
APA Style Paper
General Notes
New Blank Document
Table of Contents
Answer:
third one
Explanation:
To write a letter to your grandma using Word Online, you should choose the "New Blank Document" layout.
What is Word?Microsoft Word is a word processing application. It is part of the Microsoft Office productivity software suite, along with Excel, PowerPoint, Access, and Outlook.
To write a letter to your grandmother in Word Online, select the "New Blank Document" layout. This will open a blank page on which you can begin typing your letter.
The "APA Style Paper" layout is intended for academic papers and includes formatting guidelines and section headings that a personal letter may not require.
In Word Online, "General Notes" is not a document layout option.
The "Table of Contents" feature generates a table of contents based on the headings in your document, but it is not a document layout option.
Thus, the answer is "New Blank Document".
For more details regarding Microsoft word, visit:
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#SPJ2
now now now now mowewweedeeee
Answer:
15
Inside the type declaration, you specify the maximum length the entry can be. For branch, it would be 15.
I can't seem to type the full "vc(15)" phrase because brainly won't let me.
