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Routing > Routing Fundamentals > Flashcards

Routing Fundamentals Flashcards

1
Q

What is a router

A

L3 device
Breaks up broadcast domain
Use to connect diff networks
Use to communicate from our internal to external network
Uses routing protocols

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2
Q

Routing categories

A

Static
Dynamic

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3
Q

What is static routing

A

Simplest form of routing
Static routes that are manually entered by net admin
Use in small networks with very few routes that rarely change

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4
Q

Problem with static routing

A

Problematic for large networks if networks regularly changes
Time consuiming and prone to error since you have to manually type in

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5
Q

What is dynamic routing

A

Automated form of routing that uses routing protocol to:
Populate routing tables
Make the most efficient routing decisions
Update the routing table whenever the network changes
Automatic and hands off-all routing decisions are handled by the protocol
Used in large networks

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6
Q

Types of Dynamic routing

A

Distance vector
Link state
Hybrid

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7
Q

What is distance vector

A
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8
Q

What is link state

A
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9
Q

What is hybrid routing

A
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10
Q

What is AS (autonomous system)

A

Independent Entity or Organization
Group of networks that is controlled by a single administrative entity

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11
Q

Type of IGP

A

RIP
EIGRP
OSPF

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12
Q

Type of EGP

A

BGP

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13
Q

What routing protocol uses distance vector

A

RIP
EIGRP

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14
Q

What routing protocol uses link state

A

BGP

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15
Q

How does IGP work

A

Used internally within our single AS (organization)
Not intended to route between autonomous systems, we use egp for that

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16
Q

How does EGP work

A

Use to route between AS or from 1 org to another
Used by ISPs
Ex: if we want to route traffic between udemy to facebook, ISP will utilize BGP

17
Q

What is distance vector

A

Uses distance as its metric for making routing decisions
Distance = hop count
Pc1 to router 1 = 1 hop, router 1 to router 2 = 2 hop etc
Hops are the number of routers it has to pass through from source to destination

18
Q

What is link state

A

Builds a map of entire network
Utilizes LSAs (link state sdvertisements) to accomplish routers share information w all other routers on the network

Routers only update each other when there is a change in the network

19
Q

What protocol uses link state

A

OSPF

20
Q

What is ospf

A
21
Q

What is bgp

A

Border gateway protocol
Used by large networks
Used by ISPs
Very scalable since it uses hundreds of thousands even millions of routes

22
Q

What is igp

A

Interior gateway protocol
Used for exchanging routing information between gateways

23
Q

What is egp

A

Provides connection between different AS

Routing (1 decks)

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