3-7: EIGRP

Question 1

In 1985 Cisco developed what to overcome the limitations of RIP?

Answer 1

IGRP

Question 1

Query Packets are used when in EIGRP?

Answer 1

Used by DUAL when searching for networks

Question 1

In EIGRP, what is the best route to the destination?

Answer 1

The Successor

Question 1

What two objects are in the EIGRP Topology Table?

Answer 1

All successors and all feasible successors

Question 1

True / False: EIGRP must receive a response when querying other routers after a route goes down?

Answer 1

True. If no response is received, it may get “SIA” (Stuck in Active) mode

Question 1

The Administrative Distance for an EIGRP External route is?

Answer 1

170

Question 2

True / False: EIGRP does not support unequal cost load balancing?

Answer 2

False, EIGRP supports Equal and Unequal Cost Load Balancing

Question 3

For the EIGRP Neighbor Adjacency to be established, what needs to match?

Answer 3

Networks, the AS number, and metrics

Question 4

In EIGRP, what is the lowest metric to the destination?

Answer 4

The Feasible Distance

Question 4

Which table is used by EIGRP to store all routes that are learned from EIGRP neighbors?

Answer 4

The topology table

Question 5

In EIGRP, what is a neighbor with a loop-free BU route that satisfies the Feasibility Condition?

Answer 5

The Feasible Successor

Question 6

In EIGRP, when is the Feasibility Condition met?

Answer 6

Wwhen a neighbors RD is less than the local routers FD to the same destination network

Question 7

How do EIGRP routers establish and maintain neighbor relationships?

Answer 7

By exchanging hello packets with neighboring routers

Question 8

The Administrative Distance for an EIGRP Summary route is?

Answer 8

5

Question 9

In EIGRP, when DUAL is finished routes are stable and?

Answer 9

Passive

Question 10

Which command is used to display the bandwidth of an interface on an EIGRP-enabled router?

Answer 10

show interfaces

Question 11

What algorithm does EIGRP use?

Answer 11

DUAL

Question 13

The data portion of EIGRP message is called?

Answer 13

Type/Length/Value (TLV)

Question 14

Which EIGRP route would have the preferred administrative distance?

Answer 14

A summary route

Question 15

EIGRP ______ ________ carry route info, only as necessary

Answer 15

Update Packets

Question 16

What is indicated when an EIGRP route is in the passive state?

Answer 16

The route is viable and can be used to forward traffic.

Question 17

True / False: EIGRP packets are use reliable delivery?

Answer 17

False

Question 19

The Finite State Machine is?

Answer 19

An abstract machine that defines states, events that cause states & what events result from states

Question 21

True / False: EIGRP supports authenticated routing updates much like OSPF and RIP?

Answer 21

True

Question 21

EIGRP does not have a Dead-Timer, instead they have?

Answer 21

Hold-Timer

Question 22

In EIGRP, what describes how an algorithm will react to events?

Answer 22

The Finite State Machine

Question 22

In EIGRP, ff DUAL is recalculating/searching routes are?

Answer 22

Active

Question 24

What is an EIGRP Split Horizon?

Answer 24

Routes learned on an interface are not advertised out that interface are not advertised out that interface

Question 27

The EIGRP packet header contains what number?

Answer 27

The AS number

Question 27

What is the purpose of using protocol-dependent modules in EIGRP?

Answer 27

To accommodate routing of different network layer protocols

Question 28

EIGRP Hello Packets multicast to what IPv6 address?

Answer 28

FF02::A

Question 29

EIGRP is what type of Routing Protocol (Link-State | Distance Vector)

Answer 29

Distance Vector

Question 30

True / False: Some IOS versions allow you to use netmasks rather than wildcard masks with the EIGRP network command?

Answer 30

True.

Question 31

Acknowledgement Packets use unreliable or reliable delivery?

Answer 31

Reliable

Question 33

The Administrative Distance for an EIGRP Internal route is?

Answer 33

90

Question 34

What command enables EIGRP on a router?

Answer 34

router eigrp

Question 35

In 1992 Cisco took redeveloped IGRP and changed it to what?

Answer 35

Enhanced IGRP

Question 36

EIGRP uses what to route different protocols?

Answer 36

Protocol Dependent Modules

Question 37

What argument can be added to the show ip eigrp topology to show routes that are not feasible?

Answer 37

all-links

Question 39

The default Hello-Interval for multiaccess networks is?

Answer 39

Every 5 seconds

Question 40

RTP involves both Reliable and Unreliable delivery, what is the major difference between the two?

Answer 40

Reliable delivery requires ACK from destination

Question 41

The default Hello-Interval for NMBA networks is?

Answer 41

Every 60 seconds

Question 41

Where are EIGRP successor routes stored?

Answer 41

In the routing table and the topology table

Question 42

EIGRP Routing Table only contains what?

Answer 42

Successors

Question 44

What interval is the EIGRP Hold-Timer set to?

Answer 44

3x Hello Interval

Question 46

True / False: Like OSPF, the Autonomous System (AS) number does not need to match for each router?

Answer 46

False - in EIGRP they all must match

Question 47

What does EIGRP use for router packet delivery?

Answer 47

Reliable Transport Protocol.

Question 48

EIGRP Hello Packets multicast to what IPv4 address?

Answer 48

224.0.0.10

Question 49

What protocol number does Reliable Transport Protocol use?

Answer 49

88

Question 50

In EIGRP, what is the neighbours Feasible Distance to that destination?

Answer 50

Reported Distance