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Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be accessed more rapidly. Access in shadow RAM is typically in the 60-100 nanosecond range while ROM access is in the 125-250 ns range. In some operating systems like DOS, certain BIOS routines are not only used during the boot or start-up of the system, but also during normal operation, particularly to drive the video display terminal. In Windows and OS/2, thus, these routines are not used and the use of shadow RAM is not essential. In some systems, the user can turn the use of shadow RAM off or on.
Q. Explain about Open System? The 'Open System' is a system within its environment. It receives input from environment as well as provides output to environment. Illustrati
prepare FTR
What does a lock object involve? The tables. The lock argument.
How many address bits are required to represent a 32 K memory ? Ans. 32K = 25 x 210 = 215, Hence 15 address bits are needed; Only 16 bits can address this.
A shell is a program that presents an interface to several operating system functions and services. The shell is so called because it is an outer layer of interface among the user
Ask qDiscuss the risks of having a single root user and how more limited management abilities can be given to others users on Linux/UNIX systems.uestion #Minimum 100 words accepted
Convert decimal 153 to octal. Equivalent in octal will be ? Ans. (153) 10 = (231) 8
about nano memory
Compare the architecture of SS7 with seven-layer OSI architecture The relationship among these levels and the layers of the OSI model is demonstrated in figure. The user part i
Evaluate x = A ‾.B + C ( ) using the convention A = True and B = False. Ans. Simplify given expression x = A ‾ .B + C ( ) as = A ‾ B + C (A ‾ + D ‾ ) (As = A ‾ +D ‾ usin
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