What distinction does the author draw between packet switching and circuit switching?
A. Circuit switching and packet switching are different ways in which information
can be accessed on multiple computers at once.
B. Packet switching allows a wireless connection while circuit switching requires a
physical connection.
C. Packet switching allows information to be accessed on multiple computers,
while circuit switching can only share data between two computers.
D. Circuit switching allows information to be accessed on various computers at the
same time, while packet switching is the communication between two
computers.

D is your answer.

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the miracle worker themeswilliam gibson

themes and meanings

(comprehensive guide to drama)

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there are two central themes in  the miracle worker: that the human spirit can triumph over even the most daunting of disabilities and that a dedicated teacher can transform the lives of those with whom he or she comes into contact. these inspirational themes have long been personified in the widely known true-life relationship between helen keller and annie sullivan, but  the miracle worker  also dramatizes collateral issues that extend beyond the particular case. underlying helen’s process of learning basic principles of what annie terms “obedience” (decorum, etiquette, and hygiene), there are more universal lessons of self-governance—the inculcation of self-restraint instead of willfulness, the development of self-discipline instead of self-indulgence. only when these lessons have been mastered can helen begin to acquire language—which, annie says, “is to the mind more than light is to the eye.”

what are the options?