s, indicate: etmask of the network.
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- Complete the frames (x & y) given below with appropriate port, IP and MAC addresses. The sender Host E has two applications running; one for email with port number 49254 and the other for accessing the web server with port number 52167. The frame x is intended for the BRACU Web server and frame y is coming from the Email Server. (MAC addresses are alphabets and IP addresses are numbers) Port 80 Frame y K/93 BRACU Web Frame x Server BRACU G/51 Router ISP Router I/91 Port 25 H/52 F/25 Hub-PT Hubo A/20 Switc-PT Switho Swich-P Syitch1 Enail Server J/92 B/21 E/24 C/22 D/23 SenderQ1) How many RTTs are there from when a client first contacts an email server (by initiating a TCP session) to when the client can begin sending the email message itself - that is following all initial TCP or SMTP handshaking required? Recall the figure below from our class notes: "client" SMTP server initiate TCP connection RTT TCP connection initiated SMTP handshaking SMTP transfers "server" SMTP server time 220 HELO 250 HelloPlease write the code in the nodejs and use the localhost server to show the current date and time by creating a function. Please write the code only in Node js the address: - http://localhost:8080/v Please write the code in the nodejs and use the localhost server to show the current date and time by creating a function. Please write the code only in Node js the address: - http://localhost:8080/v Please write the code in the nodejs and use the localhost server to show the current date and time by creating a function. Please write the code only in Node js the address: - http://localhost:8080/
- Q10: Complete the frames (x & y) given below with appropriate port, IP and MAC addresses. The sender Host E has two applications running; one for email with port number 49254 and the other for accessing the web server with port number 52167. The frame x is intended for the BRACU Web server and frame y is coming from the Email Server. (MAC addresses are alphabets and IP addresses are numbers) Port 80 BRACU Web Frame x Server A/20 B/21 Frame X D. Mac Frame Y D. Mac Switch-PT Switcho C/22 S. MAC S. MAC BRACU G/51, Router F/25 Frame y Switch-P Switch1 D/23 D. IP D. IP ISP Router 1/91 H/52 E/24 Sender S. IP S. IP Hub-PT Hubo D. Port D. Port K/93 Port 25 Email Server 3/92 S. Port S. Port Data Data Trailer TrailerA host is doing a DNS resolution for itself (it is running its own recursive DNS resolver). The host's resolver has already contacted two DNS resolvers and has cached their DNS responses for a query to "www.ucsd.edu". Given those responses are cached, what is the minimum number of DNS servers it will have to reach out to to resolve the domain name "courses.ucsd.edu"? a) 1 b) 2 c) 3 d) 0In this assignment, you will develop a simple Web server in Python that is capable of processing only one request. Specifically, your Web server will (i) Create a connection socket when contacted by a client (browser) (ii) Receive the HTTP request from this connection(iii) Parse the request to determine the specific file being requested(iv) Get the requested file from the server’s file system(v) Create an HTTP response message consisting of the requested file preceded by header lines(vi) Send the response over the TCP connection to the requesting browser. If a browser requests a file that is not present in your server, your server should return a “404 Not Found” error message. Your job is to code the steps above, run your server, and then test your server by sending requests from browsers running on different hosts. If you run your server on a host that already has a Web server running on it, then you should use a different port than port 80 for your Web server. Make sure to test your…
- 5 Internet Protocol version 4 (IPv4) was deployed on 1 January 1983. The addressformat in IPv4 is a 32-bit numeric value often expressed with four octets from theinterval [0, 255] separated by periods. At the time of writing this book, InternetProtocol version 6 (IPv6), with 128 bit-wide addresses, is slowly replacing IPv4. Intheory, how many IP addresses can be assigned in IPv4 and IPv6?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.Create a Client/Server using DatagramSocket and DatagramPacket Programming and using DESede (168) as encryption algorithm. A client and a server. The server receives the encrypted datagram packet over a datagram socket. The client should ask the user to enter the 16-digit credit card number, and then send the encrypted credit number to the server. The datagram packet received by the server should be decrypted and display the unencrypted credit card number to the server screen. When the server receives a datagram, it replies by sending a datagram packet that contains a one-line "thanks for sending" back to the client. Note: The key should be generated, use the appropriate class to generate the key. Use the IPV4 loopback address
- 2- Client is connecting a server via TCP to get an object from HTTP Server. Skitch the TCPwindow connection including (establishing connection, the request from client, the response byserver, sending data from server side and closing the connection).Knowing that:1- Get request from the HTTP 1.1 server is 259 bytes.2- Response from the server is 223 bytes.3- Data size requested is 900 bytes.Question 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.)Create a Client/Server using DatagramSocket and DatagramPacket Programming and using RSA (2048) as encryption algorithm. A client and a server. The server receives the encrypted datagram packet over a datagram socket. The client should ask the user to enter the 12-digit number, and then send the encrypted credit number to the server. The datagram packet received by the server should be decrypted and display the unencrypted credit card number to the server screen. When the server receives a datagram, it replies by sending a datagram packet that contains a one-line "received with thanks" back to the client. Note: The key/s should be generated, use the appropriate class to generate the key. Use the IPv4 loopback