CCNA Exploration Module 2 Chapter 4 Distance Vector Routing Protocols V 4.0 4.1.1 What are the three distance vector routing protocols?

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Oct 28, 2013 (3 years and 10 months ago)

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CCNA Exploration Module

2 Chapter 4


Distance Vector Routing Protocols



V 4.0



4
.1.1

What are the three distance
vector routing protocols?



What are the key
characteristics of RIP?



What are the key
characteristics of IGRP?



What are the key
chara
cteristics of EIGRP?


4.1.2

How are distance vector routes
advertised?



Does a router in a distance
vector network have knowledge
of the entire path to a
destination network?



What are the 2 things a
distance vector router knows?


4.1.2.2

What are th
e two reasons
sending an entire routing table
in an update inefficient?



What is the periodic update
time for RIP?



What is the periodic update
time for IGRP?



What is the address for
broadcast updates?


4.1.3

What is the algorithm used for?



What

processes does the
routing protocol define?


4.1.4

Define Time to Convergence.



Define Scalability.



Define Classless (Use of
VLSM) or Classful.



Define Resource Usage.



Define Implementation and
Maintenance



List the advantages for
distance ve
ctor protocols.



List the disadvantages for
distance vector protocols.


4.1.4.2

Definitely practice the exercise
at the right. It will help you
remember each protocol.


4.2.1

What are the routes that router
will initially discover after

booting?


Af
ter completing the initial
discovery what does the router
start to do?


4.2.2.1

What does the initial exchange
of routing information contain?



What does the router do with
the information that is not
contained in its routing table?



After the first e
xchange of
routing updates what has been
added to each routing table?


4.2.3.1

What is convergence?



What is slit horizon?


4.2.4

The amount of time it takes for
a network to converge is
directly proportional to
____________________



The speed of ach
ieving
convergence consists of what
two things?


4.3.1

What are the two reasons
routers exchange routing
updates?



What is the period update time
for RIP?



What are the four reasons
listed for topology changes?


4.3.1.2

What are the three additional
timers?



If an update has not been
received to refresh an existing
route after 180 seconds, what
happens to that route in the
routing table?



What happens to the route after
240 seconds have elapsed?



What does a holddown timer
do?



What are the tw
o commands
that will show the timers?


4.3.2

Define bounded update.



What are characteristic of
EIGRP updates?


4.3.3

What is a triggered update?



What are the three reasons to
send a triggered update?



What are the two problems with
triggered upda
tes?


4.3.4

What is it called when all the
routers send updates at the
same time on a network with a
hub at the center?



It this a problem on a switched
network?


4.4.1

What is a routing loop?



What are some reasons for
routing loops?



What mechani
sm is built into IP
to overcome routing loops?



What conditions can be created
because of routing loops?



What are some of the
mechanisms used to avoid
routing loops?


4.4.2

What is count to infinity?


4.4.3

What is infinity defined by?




What is i
nfinity for RIP?


4.4.4

What is it called when a route
goes up, then down, then up
etc.?



What are holddown timers used
for?



Describe the process of how a
holddown timer works.


4.4.5

What is the split horizon rule?


4.4.6

What is route poisoning?


4.4.6.2

What is split horizon with
poison reverse?


4.4.7

What is time
-
to
-
live (TTL)?



What happens when a packet’s
TTL reaches 0?


4.5.1

What are the factors that affect
the distance vector protocol
you choose?



What are the features of RIP?



Wh
at features were introduced
with RIPv2?



What are the features of
EIGRP?



What are the advan
ta
ges of
EIGRP?