Redes6

Question 1

Dependability issues is a requirement in most
application domains. We defined the dependability of
computer systems as:

Answer 1

Correctness, security and fault tolerance.

Question 2

This is performed when in many cases, we are
interested in knowing whether an event (sending or
receiving a message) at one process occurred before,
after concurrently with another event at another
process.

Answer 2

Event ordering

Question 3

In this type of Distributed System, the time to execute
each step pf a process has know lower and upper
bounds.

Answer 3

Synchronous Distributed Systems

Question 4

Each computer in a distributed system has its own
internal clock, which can be used by local processes to
obtain the value of the current time. This concept
refers to the relative amount that a computer clock
differs from a perfect reference clock.

Answer 4

Clock drift rate

Question 5

In this type of Distributed System, process execution
speed, this is that each step may take an arbitrarily
long time.

Answer 5

Asynchronous Distributed Systems