Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- Can anyone help me with basic client-server interaction using TCP sockets in network programming in c code that includes csapp.c and csapp.h. and a text file of the student record that include first name, last name, age, major, and graducation year. The ideas is have 4 choice: Add record, Search Age Range, Search graducation year, and Terminate. In opition 1, it should collect all the data to the text file, in opition 2, it should search for age range from the text file. in opition 3, it should search the graducation year from the text file and if the year is not there it should print record not found. And opition 4, the client should close the connection and terminate. studentRecord.txt: John,Doe,24,Computer Science,2023Jane,Doe,22,Mechanical Engineering,2020Charles,Babbage,21,Math,2022George,Bool,25,Math,2023Marie,Curie,26,Chemistry,2023 I know this isn't enough but I want to understand about the client-server interaction using socket interface. So please try to make it simple…arrow_forwardI made a TCP server using socket python,basically my server can: - Upload (“put”) request: The client should, at the very least, open (in binary mode) the local file defined on the command line, read its data, send it to the server through the socket, and finally close the connection. - Download (“get”) request: The client should, at the very least, create the local file defined on the command line (in exclusive binary mode), read the data sent by the server, store it in the file, and finally close the connection. To avoid accidents, the client should deny overwriting existing files. - Listing (“list”) request: the client should, at the very least, send an appropriate request message, receive the listing from the server, print it on the screen one file per line, and finally close the connection. I want you to draw an ER diagram that can show the process above please.arrow_forwardQuestion 23 A client's browser sends an HTTP request to a website. The website responds with a handshake and sets up a TCP connection. The connection setup takes 2.1 ms, including the RTT. The browser then sends the request for the website's index file. The index file references 8 additional images, which are to be requested/downloaded by the client's browser. Assuming all other conditions are equal, how much longer would non-persistent HTTP take than persistent HTTP? (Give answer in milliseconds, without units, rounded to one decimal place. For an answer of 0.01005 seconds, you would enter "10.1" without the quotes.)arrow_forward
- import socket def authenticate_user(tcp_socket): while True: response = tcp_socket.recv(1024).decode() print(response) username = input() tcp_socket.sendall(username.encode()) response = tcp_socket.recv(1024).decode() print(response) password = input() tcp_socket.sendall(password.encode()) auth_response = tcp_socket.recv(1024).decode() if "successful" in auth_response: print(auth_response) return True else: print(auth_response) def receive_items(tcp_socket): while True: response = tcp_socket.recv(1024).decode() if "Item List:" in response: print(response) while True: item = tcp_socket.recv(1024).decode() if not item.strip(): break print(item) break def select_items(tcp_socket): selected_items = [] while True: item_id = input("Select item by entering…arrow_forwardI am using SwaggerHub for API documentation for my web application. When I use the bearer token for authentication, and I run a get request that is supposed to return a JSON of the user's trip information. It returns a 200 HTTP response, but the body response does not return the JSON information, instead it returns HTML text. The image below shows the result. Why is this happening?arrow_forwardSuppose an HTTP client makes a first GET request to the gaia.cs.umass.edu web server for a base page that it has never before requested, which contains an embedded object, which causes the client to make a second GET request. A very short time later, the client then makes a third GET request - for the same base page, with that third GET request having an If-Modified-Since field (as does the 4th GET request that the client makes for the embedded object). Neither the base object nor the jpeg object has changed. How many round trip times (RTTs) are needed from when the client first makes the third GET request (i.e., when it requests the base object for the second time) to when the base page and the jpeg file are displayed a second time, assuming that: any time needed by the server to transmit the base file, or the jpeg file into the server's link is (each) equal to 1/2 RTT the time needed to transmit an HTTP GET into the client's link is zero? the time needed by the server to transmit…arrow_forward
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