NET-08-P1 Dynamic Routing

Question 1

The purpose of these protocols is to map networks and update routing tables with the shortest routes, in a fully automatic and independent manner

Answer 1

Dynamic Routing

Question 2

Indicates that the route was manually created by an administrator to reach a specific network

Answer 2

Routing Source Codes: S

Question 3

indicates that the route was learned dynamically from another router

Answer 3

Routing Source Codes: EIGRP

Question 4

Indicates that the route was learned dynamically from another router using OSPF routing protocol

Answer 4

Routing Source Codes: O

Question 5

is a measurable value assigned by the routing protocol to different routes based on the usefulness of the route

Answer 5

metric

Question 6

This metric will choose the path with the least amount of hops, where hops refer to the router

Answer 6

Routing Protocol Metrics: RIP - Routing information Protocol

Question 7

This metric is based on cumulative bandwidth from source to destination and will choose the path with the highest bandwidth

Answer 7

Routing Protocol Metrics: OSPF - Open Shortest Path First

Question 8

are routing protocols used within an autonomous system (AS), such as company routers

Answer 8

Protocol Types - Interior Gateway Protocols (IGP)

Question 9

are used to map routes between AS’s and are mainly used by ISPs

Answer 9

Exterior Gateway Protocols - EGP

Question 10

What is the difference between Vector vs Link-State

Answer 10

how the protocols discover topology and the way they share routing information with the routers

Question 11

is a routing algorithm that calculates the best path for a packet based on the factors of distance and vector

Answer 11

Distance Vector

Question 12

The distance between the router and the destination network, based on the metric of number of hops (routers)

Answer 12

Distance

Question 13

The outgoing interface and the direction to the path that leads to the destination network

Answer 13

Vector

Question 14

routing protocols include complete network topology maps

Answer 14

Link State

Question 15

The map is created based on information gathered from all routers on the network

Answer 15

Network Map

Question 16

Link state routing protocols do not broadcast information regularly. Updates are only sent when a change occurs on the network

Answer 16

Network Changes

Question 17

is a feature used in all routing protocols. its purpose is to disable routing updates on specific interfaces which decreases resource usage and increase security

Answer 17

Passive Interface Feature

Question 18

What is STP

Answer 18

Spanning Tree Protocol

Question 19

What is BGP

Answer 19

Border Gateway Protocol

Question 20

What is the parameter for Administrative Distance

Answer 20

AD value is 120

Question 21

is a feature that allows automatic summarization of routes to their classful network. often disabled because most address schemes in networks today do not allow address summaries without compromising communication

Answer 21

Auto-Summarization Feature

Question 22

Keeps track of changes in the topology, such as when a new network is added or when a link fails

Answer 22

OSPFv2

Question 23

this packet is sent every 10 seconds to all OSPF-enabled routers

Answer 23

Hello intervals

Question 24

When a router does not receive a “hello” packet from its neighbor within 40 seconds, it will consider that neighbor “dead” and will start looking for alternative routes

Answer 24

Dead intervals

Question 25

A router uses this to advertise the routing topology to all other local routers in the same OSPFv2 areas

Answer 25

LSA - Link State Advertisement

Question 26

stores received LSA packets, adter the routers enable OSPFv2 to use the SPF algorithm to calculate the routes

Answer 26

Link State Database

Question 27

When an adjacency is initialized, OSPFv2 exchanges this packet to describe the content of the topological database

Answer 27

Database Description

Question 28

If a router notices that parts of its topological database are outdated. It will send this link to a neighbor for more updated versions of those components

Answer 28

Link State Request

Question 29

messages are responses to LSR message

Answer 29

Link State Update