OSPFv2 and Advanced OSPFv2 Quiz

What protocol number does OSPFv2 use for inter-router communication?

• 87

• 88

• 89

• 90

Which statement accurately describes a Type 1 Router Link LSA in OSPFv2?

• They are flooded throughout the entire OSPF domain to advertise external network prefixes.

• They represent multi-access network segments where a Designated Router (DR) has been elected.

• They summarise networks that originate from other OSPF areas.

• They are fundamental to the Link-State Database (LSDB) and are advertised by every OSPF router for each OSPF-enabled link, describing the router's interface state and cost.

Which OSPFv2 router is responsible for advertising Type 2 Network Link LSAs?

• Any router connected to the network segment.

• The Area Border Router (ABR).

• The Designated Router (DR).

• The Autonomous System Boundary Router (ASBR).

What is the flooding scope of Type 3 Summary Link LSAs in OSPFv2?

• Confined to the originating OSPF area only.

• Flooded throughout the entire OSPF domain.

• Flooded between OSPF areas, specifically between the backbone area (Area 0) and non-backbone areas.

• Shared only between neighbours on the same link (link-local scope).

What information does an OSPFv2 Type 5 AS External LSA contain?

• Details about the router's interface state and cost within an area.

• A list of routers connected to a multi-access network and its network mask.

• Summary information about networks originating from other OSPF areas.

• Information about network prefixes that have been redistributed into OSPF from an external routing domain.

Where do OSPFv2 Type 7 NSSA External LSAs primarily originate and how are they scoped?

• They originate from an ASBR in any area and are flooded throughout the OSPF domain.

• They are injected by an ASBR within a Not-So-Stubby Area (NSSA) and are confined to that NSSA.

• They are generated by an ABR to help locate an ASBR in a different OSPF area.

• They are converted to Type 3 LSAs before being advertised into other OSPF areas.

Which of the following must match for an OSPF neighbor adjacencies to form?

I. Interface Maximum Transmission Unit (MTU)

II. Area ID

III. Hello and Dead Timers

IV. OSPF Process ID

• I, II, III, and IV

• I, II, and IV only

• I, II, and III only

• II and III only

What is the default OSPF network type for Ethernet interfaces?

• Nonbroadcast

• Point-to-Point

• Broadcast

• Loopback

By default, the OSPF dead interval timer is set to how many times the hello interval?

• Two times

• Three times

• Four times

• Five times

An OSPFv2 stub area blocks which type(s) of LSAs from being injected into the area by the Area Border Router (ABR)?

• Type 1 and Type 2 LSAs

• Type 3 LSAs only

• Type 4 and Type 5 LSAs

• Type 7 LSAs only