CS470A_HW5_Manisha_10434 - CS470A Homework#5 SID:10434 Due Date Details of Homework hmwk-4 Assignment Description 1 review topics covered in lecture

CS470A_HW5_Manisha_10434 - CS470A Homework#5 SID:10434 Due...

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CS470A_HW5 Manisha Vyas 25 th June 2013 CS470A Homework #5 SID:10434 Details of Homework hmwk-4 Due Date: 6/26/2013 Assignment Description: 1. review topics covered in lecture hours; 2. answer the following questions from Chapter 2 of the textbook, P13-15; 18,19,21; REPLACE "your department" in the questions with "npu.edu" and use npu41 if you need access dig utility on Linux. Hint: use 'whois 216.133.192.31' to get IP address range belongs to a domain such as npu.edu from ARIN.NET ; 3. preview the rest of chapter two about p2p & socket programming Total Points: 10 Q.1. Review topics covered in lecture hours ANSWER1: Reviewed topics from Handout section on npu.edu Q.2. Answer the following questions from Chapter 2 of the textbook, P13-15; 18,19,21; REPLACE "your department" in the questions with "npu.edu" and use npu41 if you need access dig utility on Linux. Hint: use 'whois 216.133.192.31' to get IP address range belongs to a domain such as npu.edu from ARIN.NET ; P.13. What is the difference between MAIL FROM: in SMTP and From: in the mail message itself? The MAIL FROM: in SMTP is a message from SMTP client that identifies the sender of the mail message to the SMTP server. The From: on the mail message itself is NOT SMTP message, but rather is just a line in the body of the mail message. In mail message MIME is shown which shows u the email contents, P.14. How does SMTP mark the end of a message body? How about HTTP? Can HTTP use the same method as SMTP to mark the end of a message body? Explain. SMTP uses a line containing only a period . to mark the end of a message body. HTTP uses “Content - Length header field” to indicate the length of a message body .
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CS470A_HW5 Manisha Vyas 25 th June 2013 No, HTTP cannot use the method used by SMTP, because HTTP message could be binary data, whereas in SMTP, the message body must be in 7 bit ASCII format.
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  • Fall '13
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  • E-mail, IP address, Domain Name System, Manisha Vyas

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