Dynamic Routing Protocol

Question 1

Used for routing within an Autonomous System (AS) - IGP

Answer 1

RIP/EIGRP/OSPF/IS-IS

Question 2

Used for routing between Autonomous Systems - EGP

Answer 2

BGP

Question 3

Types of Distance Vector Routing Protocols

Answer 3

RIPv1&2

EIGRP/IGRP

Question 4

Types of Link State Protocols

Answer 4

OSPF & IS-IS

Question 5

What is a link state routing protocol ?

Answer 5

Uses link-state information received from routers to create topology map/ select best path to all destination networks in the topology

Question 6

Does not send subnet mask information in routing updates and cannot support VLSMs and CIDR.

Answer 6

Classful Routing Protocol

Question 7

Include subnet mask information in routing updates and supports VLSM and CIDR

Answer 7

Classless Routing Protocol

Question 8

Examples of classless routing protocol

Answer 8

RIPv2,EIGRP,OSPF,IS-IS

Question 9

Path-Vector Routing Protocol

Answer 9

BGP

Question 10

Metrics used by RIP

Answer 10

Hop count

Question 11

Metrics used by EIGRP

Answer 11

Bandwidth, delay, load and reliability.

Question 12

Metrics used by OSPF

Answer 12

Cost based on cumulative bandwidth

Question 13

Classless routing protocol
Increased efficiency
Reduced routing entries
Secure

Answer 13

RIPv2

Question 14

Bounded triggered updates 
Hello keepalive mechanism
Maintains a topology table 
Rapid convergence 
Multiple network layer protocol support

Answer 14

EIGRP

Question 15

Uses accumulated costs along each path, from source to destination

Answer 15

Dijkstra’s Algorithm

Question 16

Advantages of Link-State Protocols

Answer 16

Faster convergence

Each router builds its own topological map of the network

Question 17

Disadvantages of LSP

Answer 17

More memory requirements
More CPU processing requirements
Affects bandwidth during LCP flooding.

Question 18

What loop prevention technique is implemented by distance vector routing protocols?

Answer 18

Split horizon

Question 19

What are OSPF Hello packets for ?

Answer 19

They are used to maintain neighbor relationships

They are used for dynamic neighbor discovery.

Question 20

What are two characteristics of link-state protocols compared to distance vector protocols?

Answer 20

require a lot of hardware resources

compute their own knowledge of the network topology.

Question 21

Which routing protocol is designed to use areas to scale large hierarchical networks?

Answer 21

OSPF