Q1. (12 Points) Answer True or False and briefly justify your answer. 1. (1 point) Suppose a user requests a Web page that consists of some text and two images. For this page the client will send one request message and receive three response messages. 2. (1 point) The Date: header in the HTTP response message indicates when the object in the response was last modified. 3. (1 point) HTTP, SMTP, and IMAP all run on top of TCP. 4. (1 point) A cookie file is stored on the web server and is managed by the server's operating system. 5. (1 point) When using HTTP1.1 or HTTP/2, browsers always establish one single TCP connection with the server. 6. (1 point) Web Caching reduces the delay for all objects requested by a user on the local LANetwork. 7. (1 point) A mail/user agent uses SMTP to pull e-mails from their mailbox at the mail server. 8. (1 Points) The only service that DNS provides is the translation of hostnames to IP addresses. 9. (1 Points) DNS uses UDP. If a DNS packet is lost, there is no automatic recovery by UDP, thus application simply retries. 10. (1 Points) IMAP is a mail protocol used for sending mail from sender to recipient. 11. (1 Points) HTTP requires multimedia data to be ASCII encoded. 12. (1 Points) HTTP sends its control information out-of-band