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CompTIA Network+ Routing Protocols > Routing Protocols > Flashcards

Routing Protocols Flashcards

1
Q

What is the max hop count allowed in RIPv1?

A

15

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2
Q

Name the distance vector routing protocols

A

RIP, RIPv2, IGRP

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3
Q

2 reasons Why isn’t RIP suited to large networks?

A

1) Because of allowing only 15 hop counts. 2) Slow routing convergence

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4
Q

What 4 features does RIPv2 have that RIP doesn’t?

A

1) uses multicast 224.0.0.9 address, 2) Supports VLSM networks, 3) Allows for MD5 authentication, 4) supports discontiguous networks

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5
Q

What might you decide to configure if you had a large network with lots of subnets? And why?

A

Route aggregation/supernetting/summarization. It creates more efficient routing.

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6
Q

Name the main hybrid routing protocol

A

EIGRP

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7
Q

Name the 3 tables used in EIGRP

A

1) topology table, 2) neighbour table, 3) routing table

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8
Q

Which routing protocol uses bandwidth and delay of the line as defaults to determine best path to a network?

A

EIGRP

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9
Q

List the algorithms used by RIP,RIPv2,EIGRP to select the best path?

A

1) bellman-ford, 2) bellman-ford, 3) DUAL,

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10
Q

In EIGRP, what is a Successor route and where is it stored?

A

a successor route is the best route to a network and is stored in the Routing Table as well as the Topology Table.

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11
Q

What is a feasible successor route and how many can be stored?

A

feasible successor routes are back-up routes for the successor routes, if available. A maximum of 6 can be stored.

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12
Q

You need to translate from one routing protocol to another, what would you run on the route?

A

route redistrubtion

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13
Q

Which routing protocol uses a RIB? What does it stand for and what is it?

A

BGP. RIB = Routing Information Base. It akin to a routing table.

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14
Q

In BGP, an AS path is what?

A

a list of the Autonomous Systems that have to be traversed to reach a given network

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15
Q

BGP tells you about all networks at the end of an AS path, TRUE or FALSE?

A

TRUE

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16
Q

What is origin code attribute and which routing protocol uses it?

A

origin code attribute is a feature of BGP that gives you the history of how the networks at the end of an AS path were introduced to BGP.

17
Q

How are neighbour tables maintained/updated?

How are Topology tables maintained/updated?

A

Neighbour tables - updated through the use of HELLO packets that are exchanged by all routers.
Topology Tables - updated through Link State Advertisements (or packets)

18
Q

Which 4 routing protocols support IPv6?

A

1) EIGRPv6,
2) OSPFv3,
3) IS-IS,
4) RIPng

19
Q

List the 3 benefits of using OSPF in a hierarchical design

A

1) decrease routing overhead
2) Speed up convergence
3) Confine network instability to single areas of the network

20
Q

BGP uses the below:

1) Bakcbone Router
2) Area Border Router
3) Autonomous System Border Router (ASBR) to connect different Autonomous Systems. TRUE or FALSE?

A

FALSE - They’re all used by OSPF

21
Q

What routing protocol uses Level 1 and Level 2 intermediate system?

A

IS-IS

22
Q

In IS-IS, a Level 1 intermediate system does what?

A

Route within an Area

23
Q

What’s the difference between how OSPF communicates route updates and IS-IS?

A

IS-IS uses Connectionless Network Service (CLNS) to delivery data packets between routers
OSPF uses IP

24
Q

Name on big advantage IS-IS has over OSPF?

A

IS-IS doesn’t require a separate routing table for IPv6, making it more efficient in large networks.

25
Q

How big is an IP header?

A

20-bytes

26
Q

OSPF has an unlimited hop count, true or false?

A

True

27
Q

Which two routing protocols use the Dijkstra algorithm to

A

OSPF and IS-IS

28
Q

Which two routing protocols are considered to be hybrid?

A

EIGRP and BGP

29
Q

In EIGRP, the topology table is populated by the Neighbour table and what else?

A

Paths discovered by DUAL (Diffusing Update Algorithm)

30
Q

How many feasible successor routes can be stored in the Topology table?

A

6

31
Q

EIGRP doesn’t use UDP or TCP to communicate between routers, what does it use to communicate route updates?

A

RTP (Reliable Transport Protocol)

32
Q

EIGRP uses multicast and hello packets to discover its neighbours, true or false?

A

True.

CompTIA Network+ Routing Protocols (4 decks)

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