Ch. 17 Learning IPv4 Routes With OSPFv2

Question 0

______ protocol is a set of messages, rules, and algorithms used by routers for the overall purpose of learning routes

Answer 0

Routing

Question 1

____ add IP routes to their routing table using three methods: connected routes, static routes, and routes learned by using dynamic routing protocols.

Answer 1

Routers

Question 2

____ protocol and ____ protocol refer to a protocol that defines a packet structure and logical addressing, allowing router to forward or route the packets.

Answer 2

Routed

Routable

Question 3

The term _____ refers to a process that occurs when the topology changes- that is when either a router or link fails or comes back up again.

Answer 3

Convergence

Question 4

IGP

Answer 4

Interior gateway protocols

Question 5

EGP

Answer 5

Exterior gateway protocols

Question 6

____ is a routing protocol that was designed and intended for use inside a single autonomous system AS

Answer 6

IGP (interior gateway protocols)

Question 7

AS

Answer 7

Autonomous system

Question 8

____ is a routing protocol that was designed and intended for use between different autonomous (AS) systems

Answer 8

EGP

Question 9

An ___ is a network under the administrative control of a single organization

Answer 9

AS (autonomous system)

Question 10

BGP

Answer 10

Border gateway protocol

Question 11

Today ____ is the only EGP used

Answer 11

BGP (border gateway protocol)

Question 12

ASN

Answer 12

Autonomous system number

Question 13

Each AS can be assigned a number called an _____

Answer 13

ASN (autonomous system number)

Question 14

The routing protocol _____ determines how the routing process does it’s job. It is the logic and processes used by different routing protocols to solve the problems of learning all routes, choosing the best route to each subnet

Answer 14

Algorithm

Question 15

RIP

Answer 15

Routing information protocols

Question 16

IGRP

Answer 16

Interior routing gateway protocol

Question 17

IS-Is

Answer 17

Intermediate systems to intermediate systems

Question 18

EIGRP

Answer 18

Enhanced interior gateway routing protocols

Question 19

VSLAM

Answer 19

Variable length subnet masks

Question 20

_____ distance is a number that denotes how believable an entire routing protocol is on a single router

Answer 20

Administrative

Question 21

Routers using ___-state protocols need to collectively advertise practically every detail about the internetwork

Answer 21

Link

Question 22

LSA

Answer 22

Link state advertisements

Question 23

LDSB

Answer 23

Link state database

Question 24

RID

Answer 24

Router identifier

Question 25

A_____ interface is a virtual interface whose status code is always up/up

Answer 25

Loop back

Question 26

``` Which o the following routing protocols are considered to use link-state logic? (Choose two) RIP-1 RIP-2 EIGRP OSPF Integrated IS-IS ```

Answer 26

OSPF | Integrated IS-IS

Question 27

``` Which of the following routing protocols use a metric that is by default at least partially affected by link bandwidth? (Choose two) RIP1 RIP2 EIGRP OSPF ```

Answer 27

EIGRP | OSPF

Question 28

``` Which of the following interior routing protocols support VSLAM? (Choose four) RIP1 RIP2 EIGRP OSPF integrated IS-IS ```

Answer 28

Not RIP1

Question 29

Which of the following is true about how a router using a link state routing protocol chooses the best route to reach a subnet? The router finds the best route in the link-state database The router calculates the best route by running the SPF algorithm against the information in the link state database The router compares the metrics listed for that subnet in the updates received from each neighbor and picks the best (lowest) metric route The router uses the path that has the lowest hop count

Answer 29

The router calculates the best route by running the SPF algorithm against information in the link state database

Question 30

``` OSPF runs an algorithm to calculate the currently best route. Which of the following terms refers to that algorithm? (Choose two) SPF Dual Feasible successor Dijkstra Good old common sense ```

Answer 30

SPF | Dijkstra

Question 31

``` Which of the following 'network' commands, following the command 'router OSPF 1' tells this router to start using OSPF in interfaces whose IP addresses are 10.1.1.1, 10.1.100.1, and 10.1.120.1 Network 10.0.0.0 255.0.0.0 area 0 Network 10.0.0.0 0.255.255.255 area 0 Network 10.0.0.1 0.0.0.255 area 0 Network 10.0.0.1 0.0.255.255 area 0 ```

Answer 31

Network 10.0.0.0 0.255.255.255 area 0

Question 32

``` Which of the following 'network' commands following the command 'router OSPF 1' tells this router to start using OSPF on interface whose IP addresses are 10.1.1.1, 10.1.100.1, and 10.1.120.1 Network 0.0.0.0 255.255.255.255 area 0 Network 10.0.0.0 0.255.255.0 area 0 Network 10.1.1.0 0.x.1x.0 area 0 Network 10.1.1.0 255.0.0.0 area 0 Network 10.0.0.0 255.0.0.0. Area 0 ```

Answer 32

Network 0.0.0.0 255.255.255.255 area 0

Question 33

``` Which of the following commands list the OSPF neighbors off interface serial 0/0? (Choose two) Show IP OSPF neighbor Show IP OSPF neighbor brief Show IP neighbor Show IP interface Show IP OSPF neighbor serial 0/0 ```

Answer 33

Show IP OSPF neighbor | Show IP OSPF neighbor serial 0/0