Cisco® 642-883 Exam Practice Questions (P. 1)
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Question #1
Refer to the OSPF command exhibit.

Which effect does the no-summary command option have?

Which effect does the no-summary command option have?
- AIt will cause area 1 to be able to receive non-summarized inter-area routes.
- BIt will cause area 1 to not receive any inter-area routes and will use a default route to reach networks in other areas.
- CIt will cause area 1 to not receiveany external routes and will use a default route to reach the external networks.
- DIt will convert the NSSA area into a NSSA totally stubby area.
- EIt will convert the stubby area into a NSSA.
- FIt will disable OSPF auto-summary.
Correct Answer:
B
B

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Question #2
When troubleshooting OSPF neighbor errors, which three verification steps should be considered? (Choose three.)
- AVerify if neighboring OSPF interfaces are configured in the same area.
- BVerify if neighboring OSPF interfaces are configured with the same OSPF process ID.
- CVerify if neighboring OSPF interfaces are configured with the same OSPF priority.
- DVerify if neighboring OSPF interfaces are configured with the same hello and dead intervals.
- EVerify if neighboring OSPF interfaces are configured with the same area type.
Correct Answer:
ADE
ADE
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Question #3
On Cisco IOS XR Software, which set of commands is used to enable the gi0/0/0/1 interface for OSPF in area 0?
- Ainterface gi0/0/0/0ip address 10.1.1.1255.255.255.0!router ospf 1network 10.1.1.1 0.0.0.0 area 0
- Binterface gi0/0/0/0ip address 10.1.1.1 255.255.255.0!router ospf 1network 10.1.1.1 255.255.255.255 area 0
- Crouter ospf 1area 0interface GigabitEthernet0/0/0/1
- Dinterface gi0/0/0/0ip address10.1.1.1 255.255.255.0ip ospf 1 area 0
- Erouter ospf 1address-family ipv4 unicastinterface GigabitEthernet0/0/0/1 area 0
- Frouter ospf 1address-family ipv4 unicastinterface GigabitEthernet0/0/0/1area 0
Correct Answer:
C
C
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Question #4
Which three statements are true regarding the OSPF router ID? (Choose three.)
- AThe OSPF routing process chooses a router ID for itself when it starts up.
- BThe router-id command is the preferred procedure to set the router ID.
- CIf a loopback interface is configured, its address will always be preferred as the router ID over any other methods.
- DAfter the router ID is set, it does not change, even if the interface that the router is using for the router ID goes down. The router ID changes only if the routerreloads or if the OSPF routing process restarts.
- EIn OSPF version 3, the OSPF router ID uses a 128-bit number.
Correct Answer:
ABD
ABD
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Question #5
Which two OSPF network scenarios require OSPF virtual link configuration? (Choose two.)
- Ato connect an OSPF non-backbone area to area 0 through another non-backbone area
- Bto connect an NSSA area to an external routing domain
- Cto connect two parts of a partitioned backbone area through a non-backbone area
- Dto enable route leaking from Level 2into Level 1
- Eto enable route leaking from Level 1 into Level 2
- Fto enable OSPF traffic engineering
Correct Answer:
AC
AC
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