WorksheetsSingle-Area OSPFv2 Configuration Quiz
Total questions: 29
Worksheet time: 15mins
Which criterion is preferred by the router to choose a router ID?
The IP address of the highest active interface on the router
The IP address of the highest configured loopback interface on the router
The IP address of the highest active OSPF-enabled interface
The router-id rid command
Which wildcard mask would be used to advertise the 192.168.5.96/27 network as part of an OSPF configuration?
255.255.255.223
255.255.255.224
0.0.0.31
0.0.0.32
Which OSPF network command would advertise only the 192.168.1.0 network to neighbors?
router(config-router)# network 192.168.1.0 0.0.0.0 area 0
router(config-router)# network 192.168.1.0 0.0.0.255 area 0
router(config-router)# network 192.168.1.0 255.255.255.255 area 0
router(config-router)# network 192.168.0.0 0.0.15.255 area 0
Which three parameters should match for a pair of routers to form an adjacency when running OSPFv2?
router ID
interface priority
OSPFv2 type of network
OSPFv2 process number
What are two features of the OSPF routing protocol?
Used primarily as an EGP
Automatically summarizes networks at the classful boundaries
Uses Dijkstra’s algorithm to build the SPF tree
Has an administrative distance of 100
What does the router OSPF process use to assign the router ID?
The OSPF area ID that is configured on the interface with the highest IP address
The highest IP address on the LAN interfaces
The loopback interface IP address
The highest IP address that is configured on the WAN interfaces
Which verification command identifies the specific interfaces on a router configured with the passive-interface command?
show ip route eigrp
show ip interface brief
show ip eigrp neighbors
show ip protocols
Which command would give a Gigabit Ethernet interface a lower cost than a Fast Ethernet interface?
(config-if)# ip ospf cost 100
(config-if)# bandwidth 100
(config-if)# ip ospf priority 1
(config-router)# auto-cost reference-bandwidth 1000
What should a network administrator do to reset the adjacencies after changing the router ID?
Change the interface priority.
Configure the network statements.
Change the OSPFv2 process ID.
Issue the clear ip ospf process command.
Which command can be used to view the OSPF hello and dead time intervals?
show ip ospf neighbor
show ip ospf route
show ip ospf interface
show ip protocols
What does the SPF algorithm consider to be the best path to a network?
The path with the least number of hops.
The path that includes the fastest cumulative bandwidth links.
The path that includes the fastest single bandwidth link.
The path with the smallest delays.
What is one use of the router ID in OSPF routing?
The router ID can be used to break a tie in the election process.
The router ID indicates the router priority value.
The router ID indicates the highest IPv4 address of all routers that are participating in OSPF routing.
The router ID identifies the OSPF area.
What is the first criterion used by OSPF routers to elect a DR?
Highest MAC address
Highest IP address
Highest router ID
Highest priority
Which command could be used on a router to ensure that an OSPF adjacency is formed with another router?
show ip route
show ip ospf interface
show ip protocols
show ip ospf neighbor
Which command would allow other routers in the OSPF network to use a default static route?
redistribute connected
default-information originate
redistribute static
redistribute static subnets
What will always happen if the Dead interval expires before the router receives a Hello packet?
OSPF will remove that neighbor from the router’s link-state database.
A new Dead interval timer of four times the Hello interval will start.
OSPF will run a new DR/BDR election.
SPF will run and determine which neighbor router is down.
Which command would be used to determine if an OSPF routing protocol-initiated relationship had been made with an adjacent router?
ping
show ip interface brief
show ip ospf neighbor
show ip protocols
Which command is used to verify the OSPFv2 router ID and the interfaces configured to advertise OSPF routes?
show ip route ospf
show ip protocols
show ip ospf interface
show ip interface brief
Which command could be used to verify the configured Hello and Dead timer intervals on a point-to-point WAN link?
show ip ospf neighbor
show ip ospf interface serial 0/0/0
show ip ospf interface fastethernet 0/1
show ipv6 ospf interface serial 0/0/0
Which commands provide additional information about the state of router adjacencies and timer intervals?
show ip ospf interface
show ip protocols
show running-configuration
show ip ospf neighbor
By default, how will the Dead interval be affected if the Hello interval is set to 15 seconds?
The Dead interval will now be 15 seconds.
The Dead interval will now be 30 seconds.
The Dead interval will now be 60 seconds.
The Dead interval will not change from the default value.
Which values in the Hello packets must match on two OSPF routers?
List of neighbors
Hello interval
Router ID
Dead interval
What is the default router priority value for all Cisco OSPF routers?
255
1
0
10
What indicates to a link-state router that a neighbor is unreachable?
The router receives an update with a hop count of 16.
The router receives an LSP with previously learned information.
The router no longer receives routing updates.
The router no longer receives Hello packets.
Which of the following will OSPF use when it chooses its router ID?
A loopback interface that is configured with the highest IP address on the router
The highest active interface IP address that is configured on the router
The highest active interface that participates in the routing process
The lowest active interface IP address that is configured on the router
Which OSPF network command would advertise only the 10.1.1.0 network to neighbors?
router(config-router)# network 10.1.1.0 0.0.255.255 area 0
router(config-router)# network 10.1.1.0 0.0.0.255 area 0
router(config-router)# network 10.1.1.0 0.0.0.0 area 0
router(config-router)# network 10.1.0.0 0.0.15.255 area 0
What is the OSPF cost for a link with Gigabit Ethernet interfaces?
1
100000000
10000
100
Which OSPF network statement should be configured for the network 64.100.1.64 255.255.255.192?
network 64.100.1.64 0.0.0.31 area 0
network 64.100.1.64 0.0.0.63 area 0
network 64.100.1.64 0.0.0.15 area 0
network 64.100.1.64 0.0.0.127 area 0
Which factors will prevent two routers from forming an OSPFv2 adjacency?
Mismatched OSPF Hello or Dead timers
Mismatched Ethernet interfaces
Use of private IP addresses on the link interfaces
Mismatched Cisco IOS versions
