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OSPF Configuration Quiz
Test your knowledge on OSPF (Open Shortest Path First) configuration with this engaging quiz! Designed for networking enthusiasts and professionals, it covers essential concepts and best practices for OSPF routing protocols.
Key features include:
- Multiple choice questions
- Practical scenarios to solve
- Expert-level content
What is the recommended Cisco best practice for configuring an OSPF-enabled router so that each router can be easily identified when troubleshooting routing issues?
Configure a value using the router-id command.
Use the highest active interface IP address that is configured on the router.
Use a loopback interface configured with the highest IP address on the router.
Use the highest IP address assigned to an active interface participating in the routing process.
Refer to the exhibit. A network administrator has configured OSPFv2 on the two Cisco routers but PC1 is unable to connect to PC2. What is the most likely problem?
Interface Fa0/0 has not been activated for OSPFv2 on router R2.
Interface Fa0/0 is configured as a passive-interface on router R2.
Interface S0/0 is configured as a passive-interface on router R2.
Interface s0/0 has not been activated for OSPFv2 on router R2.
Which command is used to verify that OSPF is enabled and also provides a list of the networks that are being advertised by the network?
Show ip interface brief
Show ip ospf interface
Show ip protocols
Show ip route ospf
Refer to the exhibit. Which command did an administrator issue to produce this output?
R1# show ip ospf interface serial0/0/1
R1# show ip route ospf
R1# show ip ospf
R1# show ip ospf neighbor
What command would be used to determine if a routing protocol-initiated relationship had been made with an adjacent router?
Ping
Show ip ospf neighbor
Show ip interface brief
Show ip protocols
Refer to the exhibit. On which router or routers would a default route be statically configured in a corporate environment that uses single area OSPF as the routing protocol?
R0-A
ISP, R0-A, R0-B, and R0-C
ISP
R0-B and R0-C
ISP and R0-A
R0-A, R0-B, and R0-C
Refer to the exhibit. What is the OSPF cost to reach the router A LAN 172.16.1.0/24 from B?
782
74
128
65
By default, what is the OSPF cost for any link with a bandwidth of 100 Mb/s or greater?
100000000
10000
1
100
Refer to the exhibit. If the switch reboots and all routers have to re-establish OSPF adjacencies, which routers will become the new DR and BDR?
Router R4 will become the DR and router R1 will become the BDR.
Router R2 will become the DR and router R3 will become the BDR.
Router R1 will become the DR and router R2 will become the BDR.
Router R4 will become the DR and router R3 will become the BDR.
An OSPF router has three directly connected networks; 172.16.0.0/16, 172.16.1.0/16, and 172.16.2.0/16. Which OSPF network command would advertise only the 172.16.1.0 network to neighbors?
Router(config-router)# network 172.16.1.0 0.0.255.255 area 0
Router(config-router)# network 172.16.0.0 0.0.15.255 area 0
Router(config-router)# network 172.16.1.0 255.255.255.0 area 0
Router(config-router)# network 172.16.1.0 0.0.0.0 area 0
Refer to the exhibit. Which three statements describe the results of the OSPF election process of the topology that is shown in the exhibit? (Choose three.)
R3 will be elected BDR.
The R4 FastEthernet 0/0 priority is 128.
The R4 router ID is 172.16.1.1.
R1 will be elected BDR.
The router ID on R2 is the loopback interface.
R2 will be elected DR.
What does the number 11 represent?
The OSPF process ID on R1
The cost of the link to R1
The autonomous system number to which R1 belongs
The administrative distance that is manually assigned to R1
The area number where R1 is located
Refer to the exhibit. If no router ID was manually configured, what would router Branch1 use as its OSPF router ID?
10.0.0.1
10.1.0.1
192.168.1.100
209.165.201.1
What are the two purposes of an OSPF router ID? (Choose two.)
To uniquely identify the router within the OSPF domain
To facilitate router participation in the election of the designated router
To enable the SPF algorithm to determine the lowest cost path to remote networks
To facilitate the establishment of network convergence
To facilitate the transition of the OSPF neighbor state to Full
What will an OSPF router prefer to use first as a router ID?
A loopback interface that is configured with the highest IP address on the router
Any IP address that is configured using the router-id command
The highest active interface IP that is configured on the router
The highest active interface that participates in the routing process because of a specifically configured network statement
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