Explain page mode DRAM.
What will be an ideal response?
As we know, a standard DRAM uses a row and a column address for each cell addressing. Page Mode DRAM is basically DRAM but with enhancements to improve performance. The access time for a normal DRAM access is the time to get the row plus the time to get the column. The way we improve on the standard DRAM is that we pass in the entire row and then we can have the different portions of the row buffer be accessed by successive Column Access Strobes without any additional Row Access Strobe requests. What this basically means is that once a whole row is loaded, we can access it several times without having to get the row again and again. Thus, we are improving upon our design of DRAM which takes a whole row and then accesses a column and then discards the rest of the row. Now, what we are doing is keeping the row and accessing it with multiple Column Access Strobe requests.
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The open systems interconnection (OSI) model is inefficient; each layer must take the work of higher layers, add some result, and pass the work to lower layers. This process ends with the equivalent of a gift inside seven nested boxes, each one wrapped and sealed. Surely this wrapping (and unwrapping) is inefficient. From reading earlier chapters of this book, cite a security advantage of the layered approach.
Fill in the blank(s) with the appropriate word(s).
With arbitrary code execution, the ________________ launches ("spawns") a command shell from which instructions can then be issued to the computer.
Fill in the blank(s) with the appropriate word(s).