Tld servers - PowerPoint PPT Presentation

FTP, SMTP and DNS

FTP, SMTP and DNS. FTP client contacts FTP server at port 21, specifying TCP as transport protocol Client obtains authorization over control connection Client browses remote directory by sending commands over control connection.

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475 views • 18 slides

CS 471/571

CS 471/571. Domain Name Server Slides from Kurose and Ross. people: many identifiers: SSN, name, passport # Internet hosts, routers: IP address (32 bit) - used for addressing datagrams “ name ” , e.g., www.yahoo.com - used by humans

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246 views • 15 slides

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