We gave a solution to consensus from a solution to reliable and totally ordered multicast, which
involved selecting the first value to be delivered. Explain from first principles why, in an
asynchronous system, we could not instead derive a solution by using a reliable but not totally
ordered multicast service and the ‘majority’ function. (Note that, if we could, then this would
contradict the impossibility result of Fischer et al.!) Hint: consider slow/failed processes.
What will be an ideal response?
If we used a reliable but not totally ordered multicast, the majority function can only be used meaningfully if
it is applied to the same set of values. But, in an asynchronous system, we cannot know how long to wait for
the set of all values – the source of a missing message might be slow or it might have crashed. Waiting for the
first message delivered by a reliable totally ordered multicast finesses that problem.
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If you disable all macros without notification, then ________
A) all macros are disabled and Access provides security alerts if there are macros present, which is the default setting B) you disable all macros with notification , except digitally assigned macros which are enabled by default C) Access allows all macros to run which makes your computer vulnerable to potentially malicious code and is not recommended D) all macros and security alerts about macros are disabled
____________________ involves the use of passive investigation methods to gather information about a system or an infrastructure indirectly.
Fill in the blank(s) with the appropriate word(s).
Some organizations require Word users to add document properties, like the ones in the accompanying figure, so that other employees can view details about these files.
Answer the following statement true (T) or false (F)
In cloud worlds, online users can explore anonymously. _________________________
Answer the following statement true (T) or false (F)