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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.
What are the criteria for choosing a process for swapping into memory from the swap device? The resident time of the processes in the change device, the priority of the process
Describe the VON NEUMANN ARCHITECTURE Most of present computer designs are based on idea developed by John vonNeumann referred to as the VON NEUMANN ARCHITECTURE. V
Q. Define Wait protocol? The wait protocol is used for resolving conflicts that arise due to some multiprocessors requiring same resource. There are 2 kinds of wait protocols:
What are the attributes of a field that can be activated or deactivated during runtime? Input, Output, Mandatory, Active, Highlighted, Invisible.
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Q. Input output in assembly program? Software interrupt is a call to an Interrupt servicing program situated in the operating system. Generally the input-output routine in 8086
What is port? What are the types of port available? An I/O interface having of circuitry needed to connect an I/O device to computer bus. One side consists of a data path with
What is a shell? A shell is an interactive user interface to an operating system services that permits an user to enter commands as character strings or by a graphical user int
Assembler directives: An assembler directive is a statement to give direction to the assembler to perform the task of assembly process. Assembler directives control organizati
State in brief about the proxy server A proxy server also helps a lot since it hides the real IP addresses of users requesting resources outside the firewall. Finally, the
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