Questões STF para Concursos

Remote devices can be connected to LANs with the use of wireless bridges.

The signal regeneration that is performed by repeaters can cause small propagation delays that can affect the performance of a computer network.

Multiple network segments at the layer 2 of the OSI model can be connected by a network bridge, in order to form a single network.

According to the text above, judge the following items.

Since the invention of the hubs, the switches became obsolete.

When a distributed operating system is used for managing several independent computers, this group of computers appears to behave like a single computer.

Systems that use time-sharing are not considered to be multi user systems, since they do not allow the simultaneous access of several users to a computer.

Since the first release of Windows NT, no version of Windows used cooperative multi-tasking.

Only rarely, operating systems use specific scheduling algorithms that make sure that the programs behave in a deterministic way.

Single-user operating systems do not allow the use of a computer by multiple users. Moreover, they do not allow more than one program to run at the same time.

Based on the text above, judge the following items from 111 through 116.

In an event-driven system, the switching between tasks is triggered by clock interrupts, and the duration of each time slice is always the same.