Describe the Operation and Behavior of Single Area Open Shortest Path First POWERSWITCH-CAMPUS-DEPLOY Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What happens if an OSPF router does not receive a Hello packet from a neighbor within the Dead interval?

   • AThe router restarts the OSPF process.
   • BThe router immediately recalculates its SPF tree.
   • CThe router sends a new Hello packet with a higher priority.
   • DThe router declares the neighbor down and removes it from the routing table.
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A network administrator is explaining OSPF convergence to a junior engineer. The administrator states that OSPF converges quickly and prevents loops because each router maintains a complete link-state database and runs the SPF algorithm. Which characteristic of OSPF directly ensures that routing loops are avoided?

   • AOSPF requires all routers to use the same router ID to ensure consistent path calculation.
   • BEach router independently calculates the shortest path tree from the same link-state database, ensuring consistent loop-free routes.
   • COSPF uses a hold-down timer to prevent routes from being advertised during convergence.
   • DOSPF uses split horizon and poison reverse to prevent loops.
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which OSPF packet type is used to discover neighbors and maintain neighbor relationships?

   • ALink-State Acknowledgment (LSAck)
   • BLink-State Request (LSR)
   • CDatabase Description (DBD)
   • DHello
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A campus network has five Dell PowerSwitch routers in a single OSPF area 0. All routers are connected to a common broadcast segment. The network administrator notices that only one router is generating Network LSAs (Type 2) for the segment. Which router role is responsible for generating these Type 2 LSAs?

   • AThe designated router (DR)
   • BThe area border router (ABR)
   • CThe autonomous system boundary router (ASBR)
   • DThe backup designated router (BDR)
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   On a broadcast multi-access OSPF segment, a Dell PowerSwitch router with priority 0 is connected. What is the role of this router in the OSPF network?

   • AIt will become the backup designated router if the DR fails.
   • BIt will become the designated router if no other router has a higher priority.
   • CIt will not participate in DR/BDR election and will form full adjacencies only with the DR and BDR.
   • DIt will not form any adjacencies on the segment.
   Reveal Solution Discussion Select an answer first