network 3 chapter 5 exam

Directly connected networks that are operational will be in the routing table.*

A fully converged five router OSPF network has been running successfully for several weeks. All configurations have been saved and no static routes are used. If one router loses power and reboots, what information will be in its routing table after the configuration file is loaded but before OSPF has converged?

Issue the clear ip ospf process privileged mode command.

A network administrator has just changed the router ID on a router that is working in an OSPFv2 environment. What should the administrator do to reset the adjacencies and use the new router ID?

The dead interval will now be 60 seconds.*

A network engineer has manually configured the hello interval to 15 seconds on an interface of a router that is running OSPFv2. By default, how will the dead interval on the interface be affected?

Verify that the interfaces that connect the two routers are in the same area.* Verify that the interfaces that connect the two routers are in the same subnet.*

A network engineer is troubleshooting OSPFv2 routing issues on two connected routers. Which two requirements to form an adjacency need to be verified? (Choose two.)

The subnet masks on the two connected serial interfaces do not match.*

A network engineer is troubleshooting an OSPFv2 network and discovers that two routers connected by a point-to-point WAN serial link are not establishing an adjacency. The OSPF routing process, network commands and area ID are all confirmed as correct, and the interfaces are not passive. Testing shows that the cabling is correct, that the link is up, and pings between the interfaces are successful. What is most likely the problem?

show ip ospf neighbor* show ip ospf interface*

A network engineer is troubleshooting convergence and adjacency issues in an OSPFv2 network and has noted that some expected network route entries are not displayed in the routing table. Which two commands will provide additional information about the state of router adjacencies, timer intervals, and the area ID? (Choose two.)

no ipv6 ospf dead-interval* no ipv6 ospf hello-interval*

A network engineer suspects that OSPFv3 routers are not forming neighbor adjacencies because there are interface timer mismatches. Which two commands can be issued on the interface of each OSFPv3 router to resolve all timer mismatches? (Choose two.)

the hello and dead intervals* the OSPFv3 area that the interface is in* the process ID that is assigned to the interface*

During verification or troubleshooting of the OPSFv3 configuration on a router, which three parameters are displayed by the show ipv6 ospf interface command? (Choose three.)

show ip ospf neighbor

Fill in the blank. Do not use abbreviations. When IPv4 and OSPFv2 are being used, the command " " is used to verify that a router has formed an adjacency with its neighboring routers.

third -> Elect the router with the highest IPv4 address on loopback interfaces. second -> Elect the router with the highest manually configured router ID. first -> Elect the router with the highest interface priority fourth -> Elect the router with the highest active IPv4 address on physical interfaces.

Match each OSPF election criterion to its sequential order for the OSPF DR and BDR election process. (Not all options are used.)

full state -> Routers have converged. loading state -> LSRs and LSUs are used to gain additional route information. ExStart state -> Master / slave relationships are negotiated.

Match each OSPF state to its function. (Not all options are used.)

Change the subnet mask of interface FastEthernet 0/0 to 255.255.255.0.*

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Which task has to be performed on Router 1 for it to establish an OSPF adjacency with Router 2?

The R1 dead timer expires between hello packets from R2.*

Refer to the exhibit. A network administrator has configured the OSPF timers to the values that are shown in the graphic. What is the result of having those manually configured timers?

No router ID has been configured.*

Refer to the exhibit. An administrator is trying to configure R1 to run OSPFv3 but the neighbor adjacency is not forming with the router connected to Fa0/0. What is the cause of the problem?

show ipv6 route

Refer to the exhibit. Fill in the blank. Do not use abbreviations. The command " " can be issued on router R2 to verify the propagation of a static default route from R1 to R2.

All of the routers have an OSPFv3 interface priority of 0.*

Refer to the exhibit. Four routers are connected to an Ethernet LAN segment and are configured to run OSPFv3. However, none of the routers are receiving routing updates. What is the cause of the problem?

The timer intervals of R1 and R2 do not match.*

Refer to the exhibit. R1 and R2 are connected to the same LAN segment and are configured to run OSPFv3. They are not forming a neighbor adjacency. What is the cause of the problem?

The routers are configured with the same router ID.*

Refer to the exhibit. These two routers are configured to run OSPFv3 but they are not forming a neighbor adjacency. What is the cause of the problem?

MD5*

Refer to the exhibit. What kind of OSPF authentication has been configured on this interface?

The DR can be reached through the GigabitEthernet 0/0 interface.* There have been 9 seconds since the last hello packet sent.* The router ID values were not the criteria used to select the DR and the BDR.*

Refer to the exhibit. What three conclusions can be drawn from the displayed output? (Choose three.)

With an election of the DR, the number of adjacencies is reduced from 6 to 3.*

Refer to the exhibit. Which conclusion can be drawn from this OSPF multiaccess network?​

IPsec to secure routing updates*

What is a recommended method of authentication for OSPFv3?

Two-Way state*

When OSPFv2 neighbors are establishing adjacencies, in which state do they elect a DR and BDR router?

This route is a propagated default route.*

When checking a routing table, a network technician notices the following entry: O*E2 0.0.0.0/0 [110/1] via 192.168.16.3, 00:20:22, Serial0/0/0 What information can be gathered from this output?

show ip protocols*

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 ospf interface serial 0/0/0*

Which command will a network engineer issue to verify the configured hello and dead timer intervals on a point-to-point WAN link between two routers that are running OSPFv2?

secret key* OSPF message*

Which two pieces of information are used by the OSPF MD5 algorithm to generate a signature? (Choose two.)

OSPF uses the bandwidth value to compute routes for its routing table.*

Why do OSPF serial interfaces usually require manual bandwidth configuration?

MD5 does not send the password to the neighbor router.*

Why is MD5 authentication more secure than simple authentication for OSPF updates?