Configure and Verify a Single Area OSPF Topology SONIC-DEPLOY Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A network engineer is configuring OSPF on a Dell SONiC switch that will connect to two other switches in a single area 0. The switch has a loopback interface with IP 10.255.255.1/32 and physical interfaces Ethernet 1/1 (10.0.0.1/30) and Ethernet 1/2 (10.0.1.1/30). The engineer wants to ensure the router ID is stable and not automatically derived from the highest IP address. Which configuration step should be performed?

   • AEnable OSPF on the loopback interface and set the priority to 255.
   • BUse the ip ospf router-id command on each physical interface.
   • CSet the router-id command under the OSPF process to 10.255.255.1.
   • DAssign the loopback interface to area 0 with the network command.
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2. 2foundation · easy

   A network engineer is configuring OSPF on a Dell SONiC switch to establish a single-area topology. Which command sequence correctly starts OSPF and assigns the process to area 0?

   • Arouter ospf 1 network 10.0.0.0/8 area 0
   • Brouter ospf 1 area 0 network 10.0.0.0/8
   • Crouter ospf network 10.0.0.0/8 area 0
   • Dospf 1 area 0 network 10.0.0.0/8
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4. 3foundation · easy

   Two Dell SONiC switches are not forming an OSPF adjacency. Both are configured with the same area and network type. What is the most likely cause of the problem?

   • ADifferent router IDs.
   • BMismatched OSPF hello and dead timers.
   • CMismatched area IDs.
   • DDifferent OSPF process IDs.
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5. 4application · medium

   Two Dell SONiC switches are connected via a broadcast network (Ethernet). The OSPF adjacency is stuck in 2WAY state. What is the most likely cause?

   • AThe router IDs are the same.
   • BThe routers are not the DR or BDR, so they only form a 2WAY adjacency.
   • CThe OSPF network type is point-to-point, which prevents full adjacency.
   • DThe hello and dead timers are mismatched.
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6. 5application · medium

   A Dell SONiC switch has a loopback interface with IP 10.0.0.1/32 and a physical interface with IP 192.168.1.1/24. OSPF is configured without an explicit router ID. The engineer wants to ensure the router ID is 10.0.0.1. What should be done?

   • AChange the loopback IP to 192.168.1.1.
   • BSet the OSPF priority to 255 on the loopback interface.
   • CSet the router-id command to 10.0.0.1 under the OSPF process.
   • DRemove the physical interface from OSPF.
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