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What is memory mapped I/O?
When the I/O devices share the similar address space, the arrangement is known as memory mapped I/O.
Q. Standards for scan codes ? There are 3 standards for scan codes: Mode1 (83-key keyboard PC, PC-XT) and Mode2 (84-key AT keyboard) and Mode3 (101-key keyboard onwards). In Mo
What are conditions under which a deadlock situation may arise? A deadlock situation can arise if the following four conditions hold concurrently in a system: a. Mutual exc
Explain FDM and show how CCITT standards help in building the base band? Frequency Division Multiplexing: This is the process of combining some information channels through s
How would you implement each in a class design? Ans) A specialized class "is" a specialization of another class and, thus, has the ISA relationship with the other class. An Em
Which Command permits for vertical alignment of fields one below the other. UNDER Command is used ofr vertical alignment.
What is a recursively enumerable language? The languages that is accepted by TM is said to be recursively enumerable (r. e) languages. Enumerable means that the stri
Give the difference between multiprogramming and multiprocessing. A multiprocessing system is a computer hardware configuration which contains more than one independent proc
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 r
Described different types of addressing modes available? Ans: The various types of addressing modes available are following: Register addressing mode Immediate ad
DLQ - Dead Letter Queue If an application tries to put a message to one more application and if it is not delivered then it goes to the DLQ. So DLQ is not anything but all und
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