If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

A The Lowest IP address of any physical interface
B The Highest IP address of any physical interface
C The Lowest IP address of any logical interface
D The Highest IP address of any logical interface

Correct Answer: The Highest IP address of any physical interface

At the moment of OSPF process startup, the highest IP address on any active interface will be the Router ID (RID) of the router . If you have a loopback interface configured (logical interface), then that will override the interface IP address and become the RID of the router automatically.

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Related Questions

Two connected routers are configured with RIP routing. What will be the result when a router receives a routing update that contains a higher-cost path to a network already in its routing table?
A The updated information will be added to the existing routing table Debug IP rip
B The update will be ignored and no further action will occur Debug IP route
C The updated information will replace the existing routing table entry
D The existing routing table entry will be deleted from the routing table and all routers will exchange routing updates to reach convergence
You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?
A Router (config-if) #encapsulation frame-relay q933a
B Router (config - if) #encapsulation frame-relay ansi
C Router (config - if) #encapsulation frame-relay ietf
D Router (config - if) #encapsulation frame-relay cisco
The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?
A RAM should be erased and the router restarted
B Flash should be erased and the router restarted
C NVRAM should be erased and the router restarted
D The new configuration should be entered and saved
You save the configuration on a router with the copy running-config startup-config command and reboot the router. The router, however, comes up with a blank configuration. What can the problem be?
A You didn
B NVRAM is corrupted.
C The configuration register setting is incorrect.
D The newly upgraded IOS is not compatible with the hardware of the router.
With which network type will OSPF establish router adjacencies but not perform the DR/BDR election process?
A Point-to-Point
B Backbone area 0
C Broadcast multi-access
D Non-broadcast multi-access
You need the IP address of the devices with which the router has established an adjacency. Also, the retransmit interval and the queue counts for the adjacent routers need to be checked. What command will display the required information?
A show ip eigrp adjacency
B show ip eigrp topology
C show ip eigrp interfaces
D show ip eigrp neighbors
How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?
A Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
B Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
C Configure many subinterfaces in the same subnet.
D Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Which of the following TCP/IP addresses constitute the loopback address?
A 1.1.1.1
B 255.255.255.255
C 127.0.0.0
D 127.0.0.1
Which of the following TCP/IP adress constitute the loopback address?
A 1.1.1.1
B 255.255.2555.255
C 127.0.0.0
D 127.0.0.1
When you ping the loopback address, a packet is sent where?
A On the network
B Down through the layers of the IP architecture and then up the layers again
C Across the wire
D through the loopback dongle
E None of the above

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