CISCO3_Chapter1

What is a function of OSPF hello packets?

• To ensure database synchronization between routers

• To discover neighbors and build adjacencies between them

• To request specific link state records from neighbor routers

• To send specifically requested link-state records

What is used to create the OSPF neighbor table?

• Link-State database

• Routing Table

• Forwarding Database

• Adjacency Database

The OSPF hello timer has been set to 15 seconds on a router in a point-to-point network. By default, what is the dead interval on this router?

• 45 seconds

• 60 seconds

• 15 seconds

• 30 seconds

Discovers neighbors and builds adjacencies between them

• Hello Packets

• Database Description (DBD)

• Link-State Request (LSR)

• Link-State Update (LSU)

Requests specific link-state records from router to router

• Hello

• Database Description (DBD)

• Link-State Request (LSR)

• Link-State Update (LSU)

Checks for database synchronization between routers

• Link-State Request (LSR)

• Database Description (DBD)

• Link-State Update (LSU)

• Link-State Acknowledgment (LSAck)

During this OSPF state, no Hello packets are received.

• Exchange State

• Two-Way State

• Init State

• Down State

During this OSPF state, routes are processed using the SPF algorithm.

• Exchange State

• Loading State

• Full State

• Init State

During this OSPF state, routers send each other DBD packets.

• ExStart State

• Exchange State

• Two-Way State

• Loading State

Which of the following is used with the Hello Packet to uniquely identify the originating router?

• Network Mask

• Designated Router IP ADDRESS

• Router ID

• Hello Interval