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1 Circle the correct answer (4 points) There is exactly one correct answer for the questions below. each s 4 points) Circle your cheice A protocols SMTP and Porw that the client alwnos past of the following statements is true about the mail (a) SMTP and POP3 are both push-based protocols, the server after a connection is made. (b) SMT (c) The P is a push-based protocol while POP3 is pull-based. receiving mail server initiates a direct connection with the sending user-agent e receiving mail server initiates a direct connection with the sendingmr agen 2. Which of the following statements is true about the GET and the POST HTTP methods? to retrieve a file residing at the specified URL, while POST is used to attach infor- mation in an HTTP request that must be consu at the specified URL (b) The GET method can be used to attach the URL field of the HTTP request information (for example, post web forms) by modifying usually may not. o) POST can be used to upload mulimedia data while GET (d) All of the above. 3. For a long-running network transfer, which relationship below best characterizes the relative header typical messages are larger than overheads of circuit, message, and packet switching? (Assume thatty typical packets.) (a) Message