1. 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
Explanation: The Type 2 DBD packet contains an abbreviated list of the LSDB of the sending router.
2. Which of the following OSPF packets is used by routers to announce new information?
- Type 1: Hello packet
- Type 2: DBD packet
- Type 3: LSR packet
- Type 4: LSU packet
- Type 5: LSAck packet
Explanation: The Type 4 LSU packet is used by routers to announce new information.
3. 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
Explanation: The Type 3 LSR packet is used by routers to request more information.
4. Which of the following OSPF packets is responsible for establishing and maintaining adjacency with other OSPF routers?
- Type 1: Hello packet
- Type 2: DBD packet
- Type 3: LSR packet
- Type 4: LSU packet
- Type 5: LSAck packet
Explanation: The Type 1 Hello packet is responsible for establishing and maintaining adjacency with other OSPF routers.
5. 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
Explanation: The Type 5 LSAck packet is used to confirm receipt of another OSPF packet type.
6. 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
Explanation: The Router ID uses an 8-bit field in the OSPFv2 hello packet.