SolStd26 - CHAPTER 26 Remote Log-in Electronic Mail and...

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1 CHAPTER 26 Remote Log-in, Electronic Mail and File Transfer Solutions to Odd-Numbered Review Questions and Exercises Review Questions 1. In local log-in , the user terminal is directly connected to the target computer; in remote log-in , the user computer is connected to the target computer through the Internet. 3. Options in TELNET are negotiated using four control characters WILL , WONT , DO , and DONT . 5. A user agent (UA) is a software package that composes, reads, replies to, and for- wards messages. 7. SMTP is a push protocol; it pushes the message from the client to the server. In other words, the direction of the bulk data (messages) is from the client to the server. On the other hand, retrieving messages from mail boxes needs a pull proto- col; the client must pull messages from the server. The direction of the bulk data is from the server to the client. The third stage uses a message access agent (MAA) such as POP3 or IMAP4. 9.
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SolStd26 - CHAPTER 26 Remote Log-in Electronic Mail and...

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