1. The HTTP has a mechanism that allows a cache to verify that its objects are up to date. This mechanism is called the ____________ A. conditional GET B. GET C. RTT D. none

2. In__________ HTTP connections, there is only one HTTP request/response pair per TCP connection.

In_____________ HTTP connections, there may be multiple HTTP request/response pairs in a single TCP connection.

3. If the TCP server were to support n simultaneous connections, each from a different client host, how many sockets would the TCP server need?

A. one sockets B. n sockets C. n+1 sockets D. 3n sockets

4. Consider a DASH system for which there are N video versions (at N different rates and qualities) and N audio versions (at N different rates and qualities). Suppose we want to allow the player to choose at any time any of the N video versions and any of the N audio versions.

If the server instead sends the audio and video streams separately and has the client synchronize the streams, how many files will the server need to store?

A. N files B. 2N files C. 3 N+1 files D. N^2 files