Question: a) You visit www.daraz.com using Google Chrome browser at 9:30 AM. Later, at 6:00 PM, you 5 revisit the website using the Mozilla Firefox

a) You visit www.daraz.com using Google Chrome browser at 9:30 AM. Later, at 6:00 PM, you 5 revisit the website using the Mozilla Firefox browser. According to the concept of cookies, you should have been able to view your previous searches when you visit the same website. But in this scenario, you did not see anything related to the last time you visited the website. Identify the reason behind this. b) Name the HTTP request method that allows Proxy servers to request the same object, which 5 the Proxy server already has a copy in its cache. This saves time; explain how. c) Aima writes www.CSE421.com on her web browser URL box. To access the website, Aima's 2 PC sends a DNS request to its local DNS server. The local DNS server has no information in + its cache. The local DNS server used iterative DNS lookup, with an RTT of 19 ms each, to retrieve the IP address for Aima's PC. I. Determine the total RTT for Aima's PC to fetch the IP address. After fetching the IP address, Aima's PC sends the TCP request to the website server (which takes 35ms to be sent only) to open a persistent HTTP connection with the server and request 21 objects, including the base HTML page. It takes the server 5ms to retrieve each object from the database and prepare it to be sent. Each object takes 125ms to be downloaded by the client.. II. III. Calculate the total RTT required to fetch all the objects after retrieving the IP address Calculate the total time PC A takes to load the webpage. A Go

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