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Explain Readers-writers problem.
Readers-writers problem: Assume that a data object (as a file or record) is to be shared between several concurrent processes. The readers are processes which are interested in only reading the content of shared data-object. Writers are the processes which may need to update (i.e. to read and write) the shared data object. No adverse effects will result, if two readers access the shared data object simultaneously. Though, if a writer and some other process (either a writer or reader) access the shared object concurrently, anomaly may arise. To make sure that these difficulties do not occur, writers are needed to have exclusive access to the shared object. Such synchronization problem is referred to as the problem of readers-writers.
Give the details of excess 3 codes and gray code using four binary digits. Ans: Table of excess 3 codes and gray code using four binary digits Binary
Write an AWK program which takes the following input file and processes it. $cat data.txt John Do 111-1111 English 90 Maths 80 Alice Do 222-2222 English 90 Maths 90 Chemistry 93
Signaling - Universal Serial Bus: USB supports following signaling rates: o A low speed rate of 1.5 Mbit/s is defined by USB 1.0. This is so much similar to "full speed"
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Token packets in universal serial bus - computer architecture: Token packets consist of a PID byte followed by two payload bytes: a 5-bit CRC and 11 bits of address. Tokens
Handling Interrupts: Precise interrupts (sequential semantics) Complete instructions before the offending instructions o Force trap instruction into IF o
Disadvantages of file processing system
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Q. Explain about Barrier? Barrier: No actual transfer of data takes place in this mode unless all the processors involved in the communication execute a particular block, calle
Q. What is the draw back of Access-3 Code? Give suggestion to over come this drawback.
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