SV: Chapter 4: OSPF point-to-point

1. Which of the following OSPF components is responsible for computing the cost of each route?

• Dijkstra's algorithm
• Link-State database
• Routing protocol messages
• Adjacency database
• Forwarding database

2. Which of the following OSPF components is associated with the topology table?

• Dijkstra's algorithm
• Link-State database
• Routing protocol messages
• Adjacency database
• Forwarding database

3. What is the correct order in the steps for Link-State operation?

• Execute the SPF Algorithm/ Establish Neighbor Adjacencies/ Exchange Link-State Advertisements/ Choose the Best Route/ Build the Topology Table.
• Establish Neighbor Adjacencies/ Choose the Best Route/ Build the Topology Table/ Execute the SPF Algorithm/ Exchange Link-State Advertisements
• Establish Neighbor Adjacencies/ Exchange Link-State Advertisements/ Execute the SPF Algorithm/ Choose the Best Route/ Build the Topology Table
• Establish Neighbor Adjacencies/ Exchange Link-State Advertisements/ Build the Topology Table/ Execute the SPF Algorithm/ Choose the Best Route

4. Which of the following OSPF packets contains an abbreviated list of the LSDB of the sending router?

• Type 1: Hello packet
• Type 2: DBD packet
• Type 3: LSR packet
• Type 4: LSU packet
• Type 5: LSAck packet

5. Which of the following OSPF packets is used by routers to request more information?

• Type 1: Hello packet
• Type 2: DBD packet
• Type 3: LSR packet
• Type 4: LSU packet
• Type 5: LSAck packet

6. Which of the following OSPF packets is used to confirm receipt of an LSA?

• Type 1: Hello packet
• Type 2: DBD packet
• Type 3: LSR packet
• Type 4: LSU packet
• Type 5: LSAck packet

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

• Hello Interval
• Router ID
• Designated Router ID
• Network Mask
• Dead Interval

8. What is a function of OSPF hello packets?

• to discover neighbors and build adjacencies between them
• to ensure database synchronization between routers
• to send specifically requested link-state records
• to request specific link-state records from neighbor routers

9. Which OSPF packet contains the different types of link-state advertisements?

• hello
• LSR
• DBD
• LSU
• LSAck

10. What does an OSPF area contain?

• routers that share the same process ID
• routers that share the same router ID
• routers that have the same link-state information in their LSDBs
• routers whose SPF trees are identical