Describe visible light communications (VLC).
What will be an ideal response?
A new type of WPAN based not on infrared light but on visible light (which is adjacent to infrared on the frequency spectrum) is gaining popularity. It is known as visible light communications (VLC) and standards are being developed by the IEEE committee 802.15.7. VLC transmits data by the intensity of the modulating optical source, such as LEDs and laser diodes (LDs). Because this modulation is faster than the human eye can detect, humans cannot perceive a transmission taking place.
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Consider the following string match function that extracts a substring from the length of the pattern P in the string text T. It works for the pattern "why" and the text "whysaywhycatwhy" but fails with the text " why say why cat why" for the same pattern. Why does the "dum" string match function fail?
void dum(String P, String T) { int N = T.length()-1; int M = P.length(); int start = 0; while(start < N){ String extract = T.substring(start, start+M); if(extract.equals(P)) System.out.printf("Match at %d%n",start); start = start + M; } } a. The dum() function fails because it does not consider the overlap of the pattern within the extracted substring b. The dum() function fails because it does not preprocess the string text c. The dum() string match function fails because it does not hash efficiently d. The dum() string match function fails because of the whitespace characters
One of the components of object-oriented design is identifying ____.
A. detail B. procedures C. attributes D. syntax
A(n) ________ is a combination of functions, field values, constants, and operators that brings about a result
Fill in the blank(s) with correct word
Persist data can be stored in Android through
A - Shared Preferences B - Internal/External storage C - SQlite D - Network servers. E - All of above