GATE CS 2020 Q25 — Application Layer Protocols: DNS, SMTP, HTTP, FTP, Email

In non-persistent HTTP, each TCP connection is closed immediately after the server completes sending the requested object. Therefore, every single object (the base HTML file and each embedded resource) requires its own separate TCP connection.

To display the web page completely, the browser needs to fetch:

1. The base HTML file (which contains the text of the web page): 1 connection
2. The five embedded images: 5 connections (1 connection per image)

Thus, the total minimum number of TCP connections required is:

$$\text{Total Connections} = 1 \text{ (for HTML)} + 5 \text{ (for images)} = 6$$

Note: Even if the browser opens multiple connections in parallel to speed up the download, the total number of distinct TCP connections established remains 6.