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ELN > 05 > Flashcards

05 Flashcards

1
Q

OSPF is a _____________ protocol

A

Link State

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2
Q

_____ contain routing and link state summary information in order to form an adjacency

A

LSAs

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3
Q

What command shows me a full mapping oof OSPF on a network similar to cdp

A

show ospf neighbor

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4
Q

What command shpws my Routers ID and Process ID and OSPF?

A

show ip ospf database

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5
Q

What is this OSPF Router role?

____ uses the multicast ip 224.0.0.5 to send updates to other Routers (updates information on other routers in the network)

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

DR

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6
Q

What is this OSPF Router role?

______ there backup for a DR

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

BDR

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7
Q

What is this OSPF Router role?

Routers with at least one interface connected to area zero are reffrered to as ______________

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

Backbone Routers

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8
Q

What is this OSPF Router role?

__________ whose interfaces all belong to the OSPF area

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

Internal Router

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9
Q

What is this OSPF Router role?

____________ are Routers connected to more than one OSPF area

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

Area Border Router (ABR)

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10
Q

What is this OSPF Router role?

Routers that inject external LSAs into the OSPF database

Backbone Router
DR
BDR
Internal Router
Area Border Router
ASBR

A

ASBR Autonomous System Boundary Router

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11
Q

What is this LSA type?

Generated by every router in the area

Produced by every router and includes router’s links, interfaces, state of links, and cost.

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

1-Router LSA

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12
Q

What is this LSA type?

Generated by DRs on all non-point-to-point links

used to build the shortest Path tree

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

2-Network LSA

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13
Q

What is this LSA type?

generated by Area Border Rouiters (ABRs)

sends one LSA representing all Type 1 and Type 2 LSAs in an area

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

3-Summary LSA

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14
Q

What is this LSA type?

generated by ABRs connected to an area where external routes are originated

Originated by area border routers (ABRs), It advertises autonomously system boundary routers

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

4-ASBR Summary LSA

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15
Q

What is this LSA type?

Routers with the redistribute command that are not in a NSSA area

Originated by ASBrs. advertises destinations external to the OSPF autonomous system (AS)

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

5-AS External LSA

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16
Q

What is this LSA type?

Routers with the redistribute command that are not in a NSSA area

Originated by ASBRs in a not-so-stubby are (NSSA) It is not flooded throughout the OSPF autonomous

1-Router
2-Network
3-Summary
4-ASBR Summary
5-AS External
7-NSSA External

A

7-NNSA External LSA

17
Q

Area 0 is reserved for the ________ _____ which is responsible for distributing routing information between routers

A

back bone area

18
Q

What OSPF area type is this?

Able to propagate and receive all LSAs and routes

contains 1,2,3,4, and 5 LSA types

Standard Area
Stub Area
Totally Stub Area
Not-so-stubby area
Transit area

A

Standard area

19
Q

What OSPF area type is this?

Prevents AS external (type 5) LSAs form flooding the area

contsind 1,2,3 Lsa’s

Standard Area
Stub Area
Totally Stub Area
Not-so-stubby area
Transit area

A

Stub Area

20
Q

What OSPF area type is this?

Prevents type 3 and type 5 Lsa’s from flooding the area

only contain 1,2 Lsa’s

Standard Area
Stub Area
Totally Stub Area
Not-so-stubby area
Transit area

A

Totally Stubby Area

21
Q

What OSPF area type is this?

Allows NNSA External (type 7) LSA into area

implement stub/ totally stubby functionallity yet contain an asrb

Standard Area
Stub Area
Totally Stub Area
Not-so-stubby area
Transit area

A

NSSA

22
Q

Consists of a virtual link between areas

Standard Area
Stub Area
Totally Stub Area
Not-so-stubby area
Transit area

A

transmit area

ELN (10 decks)

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