Write a client program and server program. The server uses a socket connection to allow a client to supply a filename and the server will send the file contents to the client or an error message if the file does not exist. The client will create a new file with the same contents. The client will supply the filename "input.txt" to the server and create as it's output "output.txt". Don't ask the user for these names. These files will be located in the top level folder of your project.. The Server sends whatever file the Client requests. Don't put "input.txt" in the Server. The client must get the contents from the Server. It must not read input.txt directly.
Do not use a path name when opening the files. I'll have it in the folder
2 classes, Server and Client
Answers
Using the knowledge in computational language in JAVA it is possible to write a code that server uses a socket connection to allow a client to supply a filename and the server will send the file contents to the client or an error message if the file does not exist.
Writting the code:import java.io.*;
import java.net.*;
class Server { public static void main(String args[]) throws Exception { String fileName; String sentence = "Thank you ! Received your data ..."; ServerSocket welcomeSocket = new ServerSocket(6789); Socket connectionSocket = welcomeSocket.accept(); // Receiving from client BufferedReader inFromClient =new BufferedReader(new InputStreamReader (connectionSocket.getInputStream())); fileName = inFromClient.readLine(); System.out.println("Filename from server: " + fileName); try { File file = new File(fileName); if (file.exists()) { BufferedReader br = new BufferedReader(new FileReader(file)); String st, out=""; DataOutputStream outToClient=null; while ((st = br.readLine()) != null) { out += st; } outToClient = new DataOutputStream(connectionSocket.getOutputStream()); outToClient.writeBytes(out); } else { System.out.println("The file client requested is not found !"); } } catch (IOException ioe) { System.err.println(ioe); } connectionSocket.close(); welcomeSocket.close(); } }
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Related Questions
how does kernel interacts with hardware components
Answers
Answer:
Kernel acts as a bridge between applications and data processing performed at hardware level using inter-process communication and system calls. Kernel loads first into memory when an operating system is loaded and remains into memory until operating system is shut down again.
Explanation:
Suppose you work for a company that has just hired a new senior vice president. After reviewing the budgets of all departments, the new VP went on record saying that the amount of money spent on cybersecurity is too large in proportion to the size of the company. She recommends an immediate 23 percent reduction in the cybersecurity budget. she has decided on this amount after informal conversations with other companies that have about the same number of employees. However, these other companies perform completely different functions: one company is in manufacturing while the other is a service organization, neither of which is the same as your company. The new VP says she will retract her recommendation if someone can prove that there have been no significant attacks due to the money spent on cyber defenses and not just because your company is unattractive to threat actors
Answers
Answer:
Explanation:
Suppose you work for a company that has just hired a new senior vice president. After reviewing the budgets of all departments, the new VP went on record saying that the amount of money spent on cybersecurity is too large in proportion to the size of the company. She recommends an immediate 23 percent reduction in the cybersecurity budget. she has decided on this amount after informal conversations with other companies that have about the same number of employees. However, these other companies perform completely different functions: one company is in manufacturing while the other is a service organization, neither of which is the same as your company. The new VP says she will retract her recommendation if someone can prove that there have been no significant attacks due to the money spent on cyber defenses and not just because your company is unattractive to threat actors
Consider a logic function with three inputs A,B, and C, and three outputs D, E, and F. The function is defined as follows: D is TRUE if at least one input is TRUE, E is TRUE if exactly two inputs are TRUE, and F is TRUE only if all three inputs are TRUE. Design the logic circuit for the function.
Answers
Answer: y=mx+by so x=f(x) and m is RBX and KR is b so y will be 69 and 666
Explanation: no explanation
On a computer with 32-bit addresses, suppose we have a 2 GB main memory, that is byte addressable, and a 512KB cache with 32 bytes per block.
What would be the format of the memory address for fully associative caching technique?
Answers
The format of the memory address for fully associative caching technique is option C: c) TAG= 13 SET = 14 WORD =5.
The definition of fully associative cacheA fully associative cache allows data to be stored in any cache block rather than forcing each memory address into a specific block. — Data can be stored in any vacant block of the cache when it is read from memory.
Note that the term "fully associative mapping" refers to a cache mapping technique that enables mapping of the main memory block to an openly accessible cache line.
Furthermore, data could be stored in any cache block with a fully associative cache. Every memory address wouldn't have to be confined to a specific block and option c best fit the statement above.
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Jasper created a slide with three pictures and text with font size 16. What should he do to make his slide easy to read and engaging? Group of answer choices Choose one picture and increase the font size to at least 18. Decrease font size and add more pictures. Get rid of all the pictures and increase the font size to 44. Remove all text and add one more picture.
Answers
Answer:
Choose one picture and increase the font size to at least 18 or Decrease font size and add more pictures.
Explanation:hope this helps ^-^
Steps for Adjusting the width of a cell in ms Excel
Answers
After that, select "Format" from the "Cells" submenu. There is a drop-down menu where you may choose between "Row Height" and "Column Width." Choose the one that you wish to make the initial adjustment to.
What are cells in Excel?The fundamental building block of an Excel spreadsheet is a cell. The hundreds of tiny, rectangular rectangles you see when you start a new sheet in a spreadsheet are called cells. You can enter the data you intend to utilize in your spreadsheet in these cells.The system arranges rows by number and columns by letter, with each cell located at the junction of a row and a column. As a result, depending on its column and row, each cell has a unique cell address. For instance, the cell in row six and column B holds the address B6. Additionally, you may pick a cell range, which is a collection of cells, at once.List the first and last cells in a cell range to make a reference to that range. For instance, you could write "B3:B6" for the cell range that consists of B3, B4, B5, and B6.Learn more about Excel spreadsheet refer to :
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Can someone please help me with this?
Answers
Answer:
no
Explanation:
Name six different administrative controls used to secure personnel
Answers
The six different administrative controls used to secure personnel are: Preventative, detective, corrective, deterrent, recovery, directive, and compensation.
What controls have the additional name "administrative controls"?To lessen or restrict exposure to a particular hazard at work, administrative controls, also known as work practice controls, are used. When substitution, omission, or the use of engineering controls are not practical, this type of hazard control alters the way work is done.
Therefore, Policies, processes, or guidelines that outline employee or company practices in keeping with the organization's security objectives are referred to as administrative security controls.
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component that collects data from peapleb or other devices and sends it to the computer us called
Answers
The component that collects data from people or other devices and sends it to the computer, is called the Input device.
What are input devices?The data is received by input devices in a format that the computer can understand, and it is then sent to the processing unit. The electronic circuitry in the processor, more formerly known as the central processing unit (CPU), transforms input data into the desired information.
Therefore, the input device is the part of the system that gathers data from people or other sources and transmits it to the computer.
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Write python code to darken an image.
Answers
A code to implement darken and reduces all three color values is given below:
The Program<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet"
type="text/css" href="style.css" />
</head>
<body>
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>Less.js Color Operation darken() Function</h3>
<div class="box">
<div class="container1">
<p class="text">
Base Color<br>hsl(60, 50%, 52%)
</p>
</div>
<div class="container2">
<p class="text">
Darkened Color<br>hsl(60, 50%, 32%)
</p>
</div>
</div>
</body>
</html>
The complete code is attached as a txt file below.
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I am in dire need of answers on the subject slither.io! what are the strats that will get me to the top of the leaderboard?
Answers
The strats that will get you to the top of the leaderboard is that You should only accelerate when you can clearly see it. Never enter a busy area in a hurry. If you anticipate being imprisoned, move quickly enough to avoid the trap.
What makes a good leaderboard?In order to be effective, a leaderboard must mix competence, relatedness, and autonomy without leaving the player feeling powerless, alienated, or coerced.
Therefore, In Slither.io, one of the players must move briefly parallel to the other players in order to kill more opponents. Avoid doing that for too long or they'll figure out what you're up to. Simply move head-to-head for a little period of time, then feint away in the opposite direction before turning right and moving up.
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Wi-Fi Protected Access (WPA) fixes critical vulnerabilities in the earlier wired equivalent privacy (WEP) standard. Understanding that WPA uses a combination of an RC4 stream cipher and Temporal Key Integrity Protocol (TKIP), this makes a wireless access point NOT vulnerable to which of the following attacks when related to encrypted wireless packets?
Answers
Since Wi-Fi Protected Access (WPA) fixes critical vulnerabilities in the earlier wired equivalent privacy (WEP) standard, the attacks that is related to encrypted wireless packets is option A: IV attacks.
Describe an IV attack.A wireless network attack is called an initialization vector (IV) attack. During transmission, it alters the IV of an encrypted wireless packet. One packet's plaintext can be utilized by an attacker to calculate the RC4 key stream produced by the IV employed.
Note that A binary vector used to initialize the encryption process for a plaintext block sequence in order to boost security by adding more cryptographic variance and to synchronize cryptographic hardware. The initialization vector is not required to be kept secret.
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See full question below
Wi-Fi Protected Access (WPA) fixes critical vulnerabilities in the earlier wired equivalent privacy (WEP) standard. Understanding that WPA uses a combination of an RC4 stream cipher and Temporal Key Integrity Protocol (TKIP), this makes a wireless access point NOT vulnerable to which of the following attacks when related to encrypted wireless packets?
IV attacks
Malware
Ransoware
What are some resources you can learn from now to learn how to use these different devices with different operating systems?
Answers
The resources that I can learn from now to learn how to use these different devices with different operating systems are:
Learning Operating Systems from scratch [Best Udemy Course] ...Learning Operating Systems Fundamentals [Udemy] ...Learning Computer Hardware and Operating Systems [edX Course]Why is understanding operating systems critical to IT?You can "speak" to your computer using your operating system even if you don't understand its language. The file system, scheduler, and device driver are the three components of an OS that are most crucial. You can assess your computer's general health by understanding the fundamentals of your operating system.
Note that A computer user and computer hardware interact through an operating system (OS). An operating system is a piece of software that handles all the fundamental operations like managing files, memory, processes, handling input and output, and managing peripheral devices like disk drives and printers.
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Write a C++ program, which ask user for date of birth, and generate horoscope
(Zodiac) of that date of birth, using Nested If-else statement, also ask user for another
entry using do-while loop.
Answers
You can check in photo.
For each step in the assignment, make changes to this spreadsheet as described in each step.
1. In the cell below, write three operators and the type of calculation each represents:
2. In the cell below, write the symbol a formula starts with:
3. In cell D16, write the formula =10+5 and hit Enter.
4. In cell D19, write a formula that contains the difference between cells D18 and E18.
5. In cell D22, change the order of operations for the formula so that 3-4 is calculated first.
6. In cell D25, insert an image of any animal.
7. In the cell below, write two ways to open the Save As dialog box to save a brand-new file:
8. In the cell below, write the keyboard shortcut for copying text:
9. In the cell below, write what happens to the pointer to indicate you can drag data:
10. In the cell below, write what key to hold when dragging data in order to copy it:
40 11. Move the data from cells D40:G40 to cells D41:G41.
12. In the cell below, write the number of items that can be stored on the Office Clipboard:
Answers
The answer of the following spreadsheet will be:
1. Plus, minus, equals
2. =
3. D16 now says "10+5"
4. D19 now says "=D18-E18"
5. D22 now says "=3-4+5"
6. An image of a dog was inserted
7. Click on "File" in the top left corner and then click "Save As" OR press "Ctrl+Shift+S"
8. "Ctrl+C"
9. The pointer turns into a plus sign
10. "Ctrl"
11. The data from D40:G40 is now in D41:G41
12. You can store up to 24 items on the Office Clipboard
What is spreadsheet?
A spreadsheet is a computer programme that allows you to compute, organise, analyse, and store data in tabular form. Spreadsheets were created as electronic counterparts to paper accounting spreadsheets. The software runs on data entered into table cells. Each cell can include numeric or text data, as well as the results of formulas that calculate and display a value dependent on the contents of other cells. One such electronic document may also be referred to as a spreadsheet.
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If a user's computer becomes infected with malware and used as part of a botnet, which of the following actions can be initiated by the attacker? (Select all that apply.)
Answers
If a user's computer becomes infected with malware and used as part of a botnet, which of the following actions can be initiated by the attacker is option A: have up to date backups of the encrypted files
What exactly does data backup mean?Malware is any software that has been specifically created to disrupt a computer, server, client, or computer network, leak sensitive data, provide unauthorized users access to data or systems, deny users access to information, or inadvertently compromise a user's computer security and privacy.
Note that To secure data in the event of a catastrophe, accident, or malicious act, data backup is the process of copying it from a primary place to a secondary site. Modern enterprises rely heavily on data, and data loss can seriously harm and disrupt operations.
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See full question below
If a user's computer becomes infected with malware and used as part of a botnet, which of the following actions can be initiated by the attacker? (Select all that apply.)
have up to date backups of the encrypted files
use a keyboard that encrypts key strokes
a logic bomb
For the following C statement, write the corresponding RISC-V assembly code. Assume that the variables i, and j are assigned to registers x28, and x29, respectively. Assume that the base address of the arrays A and B are in registers x20 and x21, respectively.
Answers
The corresponding RISC-V assembly code for the statement will be:
x5 = f
x6 = g
x7 = h
x28 = i
x29 = j
x10 = Base address of array A
x11 = Base address of array B
add x30, x28, x29 //x30 = i+j
slli x30, x30, 3 //x30 = 8*(i+j)
add x30, x30, x10 //x30 = address of A[i+j]
ld x30, 0(x30) //x30 = A[i+j]
sd x30, 80(x11) //B[10] = A[i+j]
What is a C statement?Tokens, expressions, and other statements make up C statements. The "body" of the enclosing statement is a statement that is a component of another statement.
Statements make up the bodies of C functions (including the main function). These can be either simple statements that contain no other statements or compound statements that contain other statements. Control structures are compound statements that control how or whether their component statements are executed, such as if/then/else, while, for, and do...while.
In this case, the corresponding RISC-V assembly code is Illustrated above.
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how is interaction of electrons with the nucleus of an atom similar to the interaction of two magnets?
Answers
Answer:
One of the harder ideas to grasp in fusion is that nuclei, which, because of their electric charge, strongly repel at long range
(compared to the size of a nucleus), can strongly attract at short range. This activity allows students to explore a similar situation in
which
the magnetic interaction provides the repulsion (similar to the electric interaction within
the nucleus) and Velcro provides an attractive force at short range (similar to the nuclear
strong interaction).
Explanation:
Things conputers can’t do human can do
Answers
Explanation:
A computer cannot “think in the whole”. A computer cannot put itself in the place of a person. A computer cannot be sensitive and understanding. It can only “understand” binary encoded input.It can not do the process of reproduction xDJava Question: What is printed as a result of executing the code segment?
Answers
The answer should be [tex]7.[/tex]
Briefly discuss the relationship between waterfall model and HCI (5mks)
Answers
HCI (human-computer interaction) is the study of how people engage with computers and how computers are or are not designed to communicate successfully with humans. HCI, as the name indicates, comprises of three components: the user, the computer, and the methods in which they interact.
The waterfall model is a traditional paradigm used in the system development life cycle to build a system in a linear and sequential manner. The model is called a waterfall because it progresses methodically from one phase to the next in a downward direction.
What is the importance of the Waterfall model?The waterfall process has the following advantages: requirements are accomplished early in the project, allowing the team to define the whole project scope, construct a comprehensive timeline, and design the total application.
This model is straightforward and simple to grasp and apply. Because of the model's rigor - each phase has precise deliverables and a review procedure - it is simple to maintain. Phases are analyzed and completed one at a time in this methodology. The phases do not mix.
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there are many advantages of passing this fiverr seo test, i will write down some followings
Answers
There are the many advantages of the passing this Fiverr SEO test are the provided the ability to the test are the based on the skills.
What is test?The term test refers to the analysis of the candidate's knowledge of the subject and the topic. The test includes the question and the answer basis for the observer to have given the marks. The test will determine whether the candidate is qualified for the position and will move the class forward.
According to the Fiverr test, the market quality of search engine marketing is tested. Fiverr allows vendors to take talent tests in order to confirm the skills they list. As a seller, passing competency tests increases buyer respect by proving your skills.
As a result, the many advantages of the passing this Fiverr SEO test are the provided the ability to the test are the based on the skills.
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Using programming libraries is one way of incorporating existing code into new programs.
TRUE/FALSE
Answers
Using programming libraries is one way of incorporating existing code into new programs is a true statement.
What exactly is a programming language and how do programs relate to it?A notational scheme used to write computer programs is known as a programming language. Although they may also be graphical, formal text-based programming languages make up the majority of the field. They are an assortment of computer languages.
Therefore, Programmers can use a collection of prewritten code called a programming library to streamline tasks. This library of reused code typically focuses on a small number of widespread issues. Several different pre-coded components are typically included in a library and thus from time to time can be place on a new program if need be.
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Write a python program the find out the average of a set of integers using a WHILE loop.
Answers
amount = int(input("How many numbers will you append?: "))
list = []
for i in range(amount):
list.append(int(input("Number "+str(i+1)+": ")))
print("The average is:",sum(list)/amount)
The code written by the other person is not optimized. Instead, you can use this code with only 7 lines.
Python programming that is used to find out the average of a set of integers using a WHILE loop is as follows:
amount = int(input("How many numbers will you append?: "))
list = []
for i in range(amount):
list.append(int(input("Number "+str(i+1)+": ")))
print("The average is:",sum(list)/amount).
What is the significance of Python programming?Python is commonly used for developing websites and software, task automation, data analysis, and data visualization. Since it's relatively easy to learn, Python has been adopted by many non-programmers such as accountants and scientists, for a variety of everyday tasks, like organizing finance.
Python can create an intuitive and interactive user interface for your website or mobile application. It is an excellent language for new-age technologies and concepts such as Big Data, Machine Learning, Data Analysations, Visualisations, and many more.
Therefore, python programming that is used to find out the average of a set of integers using a WHILE loop is well described above.
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make a list different information system which is people can in
teract with every day
Answers
A list of different information system which people can interact with every day are:
LaptopsDatabasesNetworksSmartphones Why is information technology so crucial to our daily lives?Information systems store data in an advanced manner that greatly simplifies the process of retrieving the data. A business's decision-making process is aided by information systems. Delivering all the crucial information through an information system makes it simpler to make better judgments.
Note that examples of information systems that are powered by computers are:
Social media: WeChat, Face book, and LinkedInQ&A website: QuoraAtrium (University of Montreal) and Iris are cataloged in libraries (BAnQ)E-commerce platforms like Amazon and eBayLearn more about information system from
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Resources shared on a computer network include
Answers
Resources shared on a computer network include files, data, multimedia, and hardware resources like printers, fax machines, and scanners.
What is a computer network?Servers, clients, transmission media, shared data, shared printers, other hardware and software resources, network interface cards (NIC), local operating systems (LOS), and network operating systems are among the devices, features, and services that computer networks share (NOS).
Therefore, the resources that are shared are data, multimedia, and hardware resources like printers, fax machines, and scanners.
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What are the problems that could occur in data science?
Answers
The problem that could occur in data science is Data growth issue i.e, Big Data. The proper storage of all these enormous sets of data is one of the biggest problems with big data. Companies' data centers and databases are storing an ever-growing amount of data. It becomes increasingly challenging to manage these data sets as they grow exponentially over time.
The 3 biggest Data science challenges are:
Data collection:
Any ML or data science project must start by locating and gathering the necessary data assets. However, one of the most frequent issues that businesses and data scientists encounter is the lack of appropriate data, which has a direct bearing on their capacity to create reliable ML models.
The abundance of data sources:
Companies now routinely gather information about their clients, sales, workers, and other topics. They do this by utilizing a wide variety of tools, programs, and CRMs, and the sheer volume of data that is fired at businesses by the various sources can start to pose issues with data management and consolidation.
Data security and privacy:
The next difficulty is gaining access to the appropriate datasets once they have been identified. Data scientists are finding it more difficult to access datasets due to rising privacy concerns and compliance requirements.
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computer hardware refers to
Answers
Answer: Hardware refers to the computer's tangible components or delivery systems that store and run the written instructions provided by the software
Explanation:
Answer:
refers to computer's tangible components or delivery systems that store and run the written instructions provided by the software
list all the software apps on your cell phone write their uses and how it helps you as a student
1-5 please i need answers rn ASAP
Answers
Check out the image below. The text contained a link, so it is in jpeg format.
is Using programming libraries is one way of incorporating existing code into new programs true
Answers
Yes, Using programming libraries is one way of incorporating existing code into new programs is a true statement.
What function do libraries provide in programming?Programming libraries are helpful resources that can speed up the work of a web developer. They offer prewritten, reuseable portions of code so that programmers can easily and quickly create apps. Consider building a program that enables users to enroll in and pay for courses.
Therefore, Using a code library often saves developers from having to create everything from scratch. It can take less time to develop projects and have more reliable software if the catalog of programming resources is kept up well.
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