I suspect that what the test writer was attempting (rather badly) to ask,
was which of the answers are possible characteristics of routing protocols
- not which characteristics apply to *all* routing protocols, but which
are characteristics that may be used in (some) routing protocols. I'm not
sure whether I've made that any clearer though!
With that interpretation, A, B, C, and D are all correct answers, as they
all apply to some routing protocols (RIP sends periodic updates, OSPF uses
hellos, etc etc).
I agree that it's a lousy question, though.
JMcL
----- Forwarded by Jenny Mcleod/NSO/CSDA on 19/03/2002 10:48 am -----
"Priscilla Oppenheimer"
Sent by: [EMAIL PROTECTED]
16/03/2002 06:45 am
Please respond to "Priscilla Oppenheimer"
To: [EMAIL PROTECTED]
cc:
Subject: Re: about routing protocols [7:38393]
Are you sure the question didn't say, "What are some characteristics of
ALL
routing protocols?" Then the answer is E because routing protocols behave
differently and no answer applies to ALL of them.
Some routing protocols don't send periodic updates. For example, EIGRP
doesn't.
Many routing protocols don't have a separate hello mechanisms, including
RIP and IGRP.
I think C and D were a feeble attempt to distinguish link-state and
distance-vector maybe. However, one could certainly argue that both
exchange information about links and routes. But I bet that's not what the
test writer had in mind.
Regardless, it's a bad question, lacking in logic and technical accuracy,
in my opinion.
Priscilla
>--- mlh wrote:
> > Hi, there,
> >
> > The following question has been given a reference
> > answer : ABCD
> > But I am not sure: All routing protocols update
> > periodically?
> > All of them send hello message? what is the
> > difference between
> > information about links and routes?
> >
> > What are some characteristics of routing protocols?
> >
> > A - Send periodic updates.
> > B - Have a separate hello mechanism.
> > C - Exchange information about links.
> > D - Exchange information about routes.
> > E - No answer is correct
>[EMAIL PROTECTED]
>
>
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