<span>The factor that makes an IRA superior to a regular stock portfolio for saving for retirement is that </span><span>IRAs usually include employer contributions. The answer is letter D.</span>
Answer:
Assume that a context switch takes T time. Suggest an upper bound (in terms of T) for holding a spinlock. If the spinlock is held for any longer, a mutex lock (where waiting threads are put to sleep) is a better alternative.
Explanation:
The top limit is to be twice the value of (2xT). Holding the spinlock for a longer time, it will be necessary to put the thread to sleep and get a context switch, so one process awakes the sleeping thread without the need of a second context switch.
In process synchronization, cooperating process can affect or be affected by other processes executing in the system, either directly share a logical address space, both code and data, or be allowed to share data only through files or messages, although concurrent access to shared data may result in data inconsistency. But there are several mechanisms to help the orderly execution of cooperating processes that share a logical address space, so that data consistency is kept.
Economists suppose that there are various
buyers and sellers in the marketplace which means that competition is
everywhere in the market which in turn allowed price to change in reaction to
changes in supply and demand. In Economics, there are some market structures that
describes how each structure compete in a different competitive situation.
Monopoly is one. Monopoly is one of
the market structures whereby there is one producer or seller which means, the
industry is the single business. This market structure prohibits others from
joining the market when a company has a patent or copyright.
Oligopoly is another market
structure where there are chosen few firms that make up an industry. Both market
structures have high barrier entries where competing markets for share are
interdependent as the consequence of market forces.
Structures are derived data types, they are constructed using objects of other types
