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Why does FTP use two standard ports whereas other protocols, in general use only one port? Justify.
File transfer protocol uses a control connection just to send commands and receive responses. While this transfers a file, it does not send the data across the control connection. As an alternative, the client and server establish a separate data connection for all file transfer, utilize this to send one file, and after that close the connection. If the user requests other transfer, the client and server set up a new data connection. To ignore conflict in between data and control connections, FTP uses a various port number for each.
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
What is a Service in SAP terminology? A service refers to something offered by an s/w component.
Computer Memories Computer memories are either external or internal. Internal memories are either RAM (random access memory) or ROM (read only memory). External memories can t
What is an AVL tree? AVL Tree An AVL tree is a binary tree in which the dissimilarity in heights among the left and the right subtree is not more than one for each node.
Describe the advantage of using Booth algorithm? Ans: a) It achieves efficiency in the number of additions needed when the multiplier has a few large blocks of 1's. b) It
Which template must you provide, in order to display data in a Repeater control? ItemTemplate.To display data in the ItemTemplate, declare one or more Web server controls and s
Explain in brief about Compact disks (CD) These are an optical storage media that have basically taken over from floppy disk. Software is now generally supplied on a CD (in for
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In a report with an LDB attribute, you do not have to explain how the information should be retrieved from the database tables, but only how the data should be shown on the screen.
(a) What do you meant by an Expert System (ES) and explain briefly the essential differences between a Decision Support system and ES. (b) What are decision tables and what are
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