Q.7. Design and implement a client/ Multi-threaded Server Chat application where a set of clients are able to send their request to the Multithreaded Server. In this application, messages that are exchanged between client and server, must be encrypted using AES encryption algorithm. After receiving the message, each party (client or server) perform decryption operation and show the content of message on the terminal.
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- Suppose Alice, with a Web-based e-mail account (such as Hotmail or Gmail), sends a message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice’s host to Bob’s host. Be sure to list the series of application-layer protocols that are used to move the message between the two hosts.Socket programming in c language in windows Implement one server and three clients using multithreaded exchanging messages between them and then doing checksum error detection or parityGiven that you have submitted many requests to a server, each with its own id (or unique identification) and priority (or priority).Requests = [(id1, p1), (id2, p2), ……, (idn, pn)], where p1 > p2 > …. > pn. Provide the best algorithm or pseudocode for dealing with all of the requests.
- Two processes C and S are involved in a remote invocation, with C acting as the client while S actsas the server.• Highlight the underlying request-reply protocol using its primitives.• S did not respond on time to the request issued by C. Explain the steps taken by bothprocesses using the at-least-once semantics.Two processes CLT and SRV are involved in remote invocation with CLT acting as the client,while SRV acts as the server.(a) Highlight the underlying request-reply protocol using its primitives. (b) The request issued by C was not replied to on time. Explain the steps taken by bothprocessesusing the at-least-once semantics.(c) Explain the steps taken by both processes using the exactly-once semantics when CLT does not receive the response.Write a TCP/IP based client-server python code for a “Close Tender”. Thetendering process proceeds as follows: The server will think for an amountwithin 5000-6000 randomly which will be printed as “Proposed Amount” atthe server program. Randomly take the “Tender amount” for five users such asUser 1, User 2, User 3, User 4 and User 5 in the client side and send thosevalues to the server. The server will compare all user’s value with the“Proposed Amount” to find out the closest one, then, it will send a message“Congratulations!!! (****User name) got the Tender” to the client.
- Please solve it correctly with a proper explanation of the calculation. Question: Given, you want to visit “welcomebacktophysicalexams.com”. Your network has alocal DNS server and is using a recursive lookup to fetch IP addresses and RTT of 29 ms.Others in your network have already visited the above website a few hours before yourvisit.After fetching the IP address, your PC sends a non-persistent HTTP request of size 109bytes to bring 13 objects of size 31 bytes each. In this particular connection, it requiresthe PC 67ms to send the TCP request to the server. I. What is the total RTT in ms in the DNS lookup?II. What is the total RTT in ms required (including DNS) to bring the full object toyour PC?III. What is the total file transmission time in ms after fetching the IP address?Write this program in Python. Your task is to implement both the server and client parts of a chat program. You must use TCP sockets to provide the following functionality: The server should allow for multiple simultaneous clients (Multithread). Any client can get a list of all other connected clients from the server. The server should provide both clients sending to individual other clients, and clients sending to all other online users -- simultaneously. The server should support some other functionality like groups, where clients can join groups tracked by the server, and messages can be sent to all clients in the group. Other option to send files to other clients. Each client must have an ID; used for connecting with the server, in order the server can keep a list of all connected clients. The client should access all functionality that the server supports. Therefore it must be able to request a list of the IDs for all other connected clients, send messages to other individual…Suppose Alice with a Web-based e-mail account (such as Gmail) sends it message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice's host to Bob's host. Be sure to list the series of application -layer protocols that are used to movethe message between the two hosts.
- Modify the following code to use only ONE message queue for one server and multiple clients Computer Science1. It is a protocol for encapsulating data packets that use one routing protocol inside the packets of another protocol. 2. It is a hash function that has been deprecated for uses other than as a non-cryptographic checksum to verify data integrity and detect unintentional data corruption. 3. An algorithm which is a pseudorandom function family in that it can easily generate arbitrary portions of the keystream without having to start from the beginning. 4. What is the most popular and widely implemented flavor of STP? 5. An algorithm that comprises of a series of linked operations, some of which involve replacing inputs by specific outputs (substitutions) and others involve shuffling bits around (permutations). 6. It is calculated using port cost values associated with port speeds for each switch port along a given path in STP 7. A proprietary architecture that authenticates users and devices using the identity-enabled network approach, and enables the government workforce to connect…Done in C for a network programming client and server in udp Develop a client and server responsible for a file transfer utilizing UDP. the client sends a local file to the server and the server will then reassemble and save the file locally. You must also account for the packets being re-ordered or being lost in transit to the server for when a connection drops for example. If a file is dropped, print a line to stderr for it. The client must be started by the command: ./client server.ip server.port mtu winsz in_file_path out_file_path An example for the server and client starting up is ./server 9090 0 ./client 10.10.0.1 9090 512 10 dir/file outfile