Which of the following is correct regarding Memory-Mapped I/O? Select one:
a. Memory-Mapped I/O is more complex and inflexible in handling I/O operations.
b. The same memory reference instructions (read/write) can be used for I/O transfers. c. There are separate input and output instructions to handle I/O data transfers.
d. There is a separate memory and I/O address space.
e. The available memory address space is larger when using Memory-Mapped I/O.

Visualizing a game of “tag” to remember the meaning of contagious

Asecurity policy is a a. set of guidlines b. set of transmission protocols c. written document d. set of rules based on standards and guidelines

The idea that, for each pair of devices v and w, there’s a strict dichotomy between being “in range” or “out of range” is a simplified abstraction. more accurately, there’s a power decay function f (·) that specifies, for a pair of devices at distance δ, the signal strength f(δ) that they’ll be able to achieve on their wireless connection. (we’ll assume that f (δ) decreases with increasing δ.) we might want to build this into our notion of back-up sets as follows: among the k devices in the back-up set of v, there should be at least one that can be reached with very high signal strength, at least one other that can be reached with moderately high signal strength, and so forth. more concretely, we have values p1 ≥ p2 ≥ . . ≥ pk, so that if the back-up set for v consists of devices at distances d1≤d2≤≤dk,thenweshouldhavef(dj)≥pj foreachj. give an algorithm that determines whether it is possible to choose a back-up set for each device subject to this more detailed condition, still requiring that no device should appear in the back-up set of more than b other devices. again, the algorithm should output the back-up sets themselves, provided they can be found.\