READ Free Dumps For Cisco- 200-125
| Question ID 16073 | Refer to the exhibit.
If the router Cisco returns the given output and has not had its router ID set manually, what
value will OSPF use as its router ID?
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| Option A | 192.168.1.1
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| Option B | 172.16.1.1
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| Option C | 1.1.1.1
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| Option D | 2.2.2.2
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| Correct Answer | D |
Explanation Explanation: If a router-id is not configured manually in the OSPF routing process the router will automatically configure a router-id determined from the highest IP address of a logical interface (loopback interface) or the highest IP address of an active interface. If more than one loopback interfaces are configured, the router will compare the IP addresses of each of the interfaces and choose the highest IP address from the loopbacks.
| Question ID 16074 | Which two statements about the OSPF Router ID are true? (Choose two.)
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| Option A | It identifies the source of a Type 1 LSA.
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| Option B | It should be the same on all routers in an OSPF routing instance.
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| Option C | By default, the lowest IP address on the router becomes the OSPF Router ID.
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| Option D | The router automatically chooses the IP address of a loopback as the OSPF Router ID.
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| Option E | It is created using the MAC Address of the loopback interface.
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| Correct Answer | A,D |
Explanation Explanation: r120#show ip ospf data OSPF Router with ID (10.0.0.120) (Process ID 1) Next, who are the other routers in our area? Router Link States (Area 1) Link IDADV RouterAgeSeq#ChecksumLink count 10.0.0.11110.0.0.1116000x8000023A 0x0092B31 10.0.0.11210.0.0.11212460x80000234 0x009CAC1 10.0.0.11310.0.0.1131480x8000022C0x0043993 10.0.0.12010.0.0.1201520x800002400x0046CB1 We can see OSPF Router ID will be used as source of Type 1 LSA. Also the router will chose the highest loopback interface as its OSPF router ID (if available).