ISRO CSE 2020
Q51.
A grammar is defined asA \rightarrow B CB \rightarrow x \mid B xC \rightarrow B \mid DD \rightarrow y \mid EyE \rightarrow zThe non terminal alphabet of the grammar isQ53.
Given the grammars \rightarrow T^{*} S \mid TT \rightarrow U+T \mid UU \rightarrow a \mid bWhich of the following statements is wrong?Q54.
One instruction tries to write an operand before it is written by previous instruction. This may lead to a dependency calledQ55.
Consider a 5- segment pipeline with a clock cycle time 20 ns in each sub operation. Find out the approximate speed-up ratio between pipelined and non-pipelined system to execute 100 instructions. (if an average, every five cycles, a bubble due to data hazard has to be introduced in the pipeline)Q56.
For the distributions given below :Which of the following is correct for the above distributions?Q57.
The operating system and the other processes are protected from being modified by an already running process because