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How do you create special files like named pipes and device files?
The system call method forms special files in the following sequence.
For example:
If the device is a disk, main device number refers to the disk controller and minor device number is the disk.
The Karnaugh map for a SOP function is given below in figure. Determine the simplified SOP Boolean expression. Ans. F= B'C' + A'C'D + B'D'
The main reason to encrypt a file is to ? Ans. The main purpose to encrypt a file is to secure that for transmission.
What is a macro ? How it is defined ? Preprocessor' is a translation phase that is applied to source code before the compiler proper gets its hands on it. Generally, th
INT 21H supports about 100 different functions. A function is recognised by putting the function number in AH register. For illustration if we want to call function number 01 then
Compare a decoder and a demultiplexer with suitable block diagrams. Ans. Demultiplexer has similar circuit as decoder but here e is obtained as the particular input line, the
Prove the following Boolean identities using the laws of Boolean algebra: ABC + AB ‾C + ABC ‾ = A(B + C) Ans. ABC+AB'C+ABC'=A(B + C) LHS AC(B+B')+AB(C+C') OR AC+AB OR A(B
XML is the Extensible Markup Language. It betters the functionality of the Web by letting you recognize your information in a more accurate, flexible, and adaptable way. It is e
Which translator perform macro expansion, is called? Ans. Macro pre-processor perform macro expansion.
Write down the drawback of top down parsing of backtracking. Following are disadvantages of top down parsing of backtracking: (i) Semantic actions can't be performed whereas
Calculate the blocking probably Pb in 100 line strowger switching system where 10 calls are in progress and 11th one arrives, probably that there is a call in a given decade = 1/10
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