Where is a head-end modem located? A tail-end modem?
What will be an ideal response?
An access technology requires a pair of modems, with one at the subscriber’s site and one at
the provider’s site. The industry uses the term head-end modem to refer to a modem used at the
central office, and the term tail-end modem to refer to a modem used at the subscriber’s location.
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Clicking a row heading ________
A) deletes the row B) selects the row C) inserts a row above the clicked row D) bolds the content of the entire row
24. Amdahl or Gustafson? Consider the following example. A physical process involving a flat area 100 units by 100 units is being simulated. Processing of the units can take place in parallel. However, there is a border region 10 units wide that goes round the square where parallel processing cannot take place because of relationships with the external world. In other words, parallel processing can take place in the inner square but not in the 10? unit wide strip/border round it.
a. If parallel processing is used, what speedup is possible? b. Suppose that the system is scaled to 200 by 200 units. The border region remains at 10 units. What speedup can parallel processing now achieve?