Which of the following statements is/are true with respect to the interaction of a web browser with a web server using HTTP 1.1?

Let us evaluate the features introduced in HTTP 1.1:

• Option A is true: HTTP 1.1 uses persistent connections by default, allowing multiple objects (like images, scripts, stylesheets) of the same webpage hosted on the same server to be fetched over a single persistent TCP connection.

• Option B is false: A single TCP connection is established between a specific client and a specific server socket (IP and port). Hence, requests for objects hosted on different servers cannot share the same TCP connection.

• Option C is true: HTTP 1.1 supports pipelining, which allows a client to send multiple consecutive requests without waiting for the response of each previous request to be completely received.

• Option D is true: Because persistent connections remain open for subsequent requests to the same server, multiple distinct webpages residing on the same server can be downloaded sequentially across the same TCP connection.

Thus, the correct options are A, C, and D.