Eigrp Concepts

Front 1

EIGRP's default hold interval is _____ times the hello interval

Back 1

Three

Front 2

EIGRP's default hello interval is _____

Back 2

5 seconds

Front 3

True/False: 2 EIGRP neighbors require the same hello and hold timers

Back 3

False:

-not necessary but good practice

Front 4

In Distance Vector protocols what does the "distance" signify?

Back 4

The metric for a possible route

Front 5

_____ is the direction, based on the next-hop for a possible route.

Back 5

Vector

Front 6

RIPv2 identifies metrics based on _____, EIGRP is based on ______, OSPF is based on ______.

Back 6

1. Hop count

2. Bandwidth & Delay

3.Cost

Front 7

True/False: RIPv2 sends periodic hello messages.

Back 7

False:

-sends periodic full updates which is also used to keep synchronization

Front 8

What is used in DV protocols to limit updates about working routes

Back 8

Split horizon

Front 9

What processes are used in EIGRP to build a routing table?

Back 9

1. Neighbor discovery

2.Topology exchange

3. Determine best paths

Front 10

In EIGRP, a full update is when ______.

Back 10

A router sends information about ALL known routes

Front 11

What is used in EIGRP when a router wants to advertise a status change or new subnet info?

Back 11

A partial update

Front 12

In EIGRP, what protocol is used to ensure neighbors have received update messages?

Back 12

Reliable Transport Protocol

Front 13

What are the 2 important components for EIGRP to compose a metric for a route?

Back 13

Least-bandwidth & cumulative-delay

Front 14

____ ____ is the local router's metric of the best path to reach a subnet, calculated by local router

Back 14

Feasible Distance

Front 15

True/False: Reported Distance is the next-hop's best metric for local router's subnet in question

Back 15

True

Front 16

True/False: the successor route can be immediately be used if the best path to a subnet has failed

Back 16

False: it is the best path and the one added to routing table

Front 17

What is the rule for a route to be deemed a feasible successor route?

Back 17

The route in question must have a lower Reported Distance than the Feasible Distance of the successor route.

Front 18

True/False: in eigrp, if a link to a subnet dies and the router has no feasible successor routes, the router will remove route from table

Back 18

False:

-DV protocols do not remove routes, router will use DUAL to ask neighbors about the status of a route, if route is up and running, route will be updated with new info, this process helps prevent routing loops.

Front 19

To ensure a loop-free environment DUAL sends _____ _____ to neighbors to make sure a certain subnet is still up and running.

Back 19

Query messages

Front 20

What it is a benefit of EIGRP that can not be done with OSPF?

Back 20

Unequal cost load-balencing

Front 21

True/False: EIGRP routers only keep the best path in their topology table.

Back 21

False: they keep all possible routes in the topology table and only add the best paths to their routing table

Front 22

True/False: all k values must be configured when enabling EIGRP

Back 22

False: values K2,K4, & K5 have default intergers. K1 and K3 are to be configured by administrator

Front 23

True/False: EIGRP summarizes all subnets due to the default command auto-summary

Back 23

True

Front 24

True/False: after entering the no auto-summary command advertising subnets will require a wildcard mask

Back 24

False: (its optional) using a classful network under the network command (and with no auto-summary), the router will advertise all directly-connected subnetted networks that are part of the classful network

Front 25

True/False: EIGRP autonomous system number is locally significant

Back 25

False: it is globally significant, meaning all routers who want to be part of the same eigrp process must have the same AS number

Front 26

In Eigrp, why should serial links have their bandwidth configured?

Back 26

Eigrp reads bandwidth in Mbps, so for actual speed, serial interfaces need to be configured with their speed in kbps

Front 27

What is least-bandwidth?

Back 27

It is the link with the slowest speed in the path to a network

Front 28

For ipv6, why does the eigrp process require a router id to be configured?

Back 28

Because router id must must be in dotted decimal notation