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Free Practice Quiz Question List

3 IP Connectivity and Routing Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 IP Connectivity and Routing, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: A static route automatically changes its next hop when the network topology changes.

  1. A

    True

  2. B

    False

02
True or false
1 point

True or false: OSPF routers on a point-to-point link elect a designated router and backup designated router.

  1. A

    True

  2. B

    False

03
Fill in the blank
1 point

In a Cisco OSPF network statement, the wildcard mask corresponding to subnet mask 255.255.255.0 is .

04
Written response
1 point

A Cisco router has OSPF and static candidates for the same prefix. The OSPF route has an administrative distance of 110, and the static route has no explicitly configured distance. What administrative-distance value is used for the static route?

05
Choose one
1 point

Two neighboring Cisco routers are configured for OSPF. One uses router ospf 10 and the other uses router ospf 20. Which statement is correct?

  1. A

    Both routers must use the same OSPF process ID.

  2. B

    The process ID is locally significant, so neighboring routers may use different process IDs.

  3. C

    The process ID is the router ID written in IPv4-address format.

  4. D

    The process ID determines the OSPF cost of each interface.

06
Choose one
1 point

An OSPF route appears in a routing table with the bracketed values [110/20]. What do those two values represent, in order?

  1. A

    110 is the metric and 20 is the administrative distance.

  2. B

    Both values are administrative distances for different protocols.

  3. C

    110 is the administrative distance and 20 is the metric.

  4. D

    110 is the prefix length and 20 is the next-hop address.

07
Fill in the blank
1 point

When comparing routes learned through OSPF, the protocol-specific metric is called .

08
Written response
1 point

Which Cisco IOS command is commonly used to inspect HSRP state?

09
Choose one
1 point

A router should use an OSPF route when it is available and use a static route as backup if that OSPF route disappears. How should the static route's administrative distance be configured?

  1. A

    Give it a lower administrative distance than the preferred route so it is always installed first.

  2. B

    Give it a higher administrative distance than the preferred route so it can be used as a backup.

  3. C

    Set its metric equal to the preferred route's metric; administrative distance is irrelevant.

  4. D

    Configure it with a different destination prefix so it replaces the preferred route.

10
Choose one
1 point

An OSPF process starts with a manually configured router ID and also has loopback interfaces. Which address-selection rule applies?

  1. A

    A manually configured router ID takes precedence over address-based selection.

  2. B

    The highest active interface address always takes precedence, even when a loopback exists.

  3. C

    The OSPF process ID is used as the router ID.

  4. D

    The lowest loopback address is selected when a loopback exists.

11
Open ended
1 point

A LAN uses a first-hop redundancy protocol with two Layer 3 gateway devices. Explain how this arrangement allows hosts to retain a default gateway if one device fails, and identify one important limitation of this protection.

12
True or false
1 point

True or false: Two neighboring Cisco routers can form an OSPF adjacency even if their locally configured OSPF process IDs are different.

  1. A

    True

  2. B

    False

13
Choose one
1 point

A network uses an FHRP to provide hosts with a virtual default gateway. The active gateway is operating, but its upstream path has failed. What does FHRP not guarantee in this situation?

  1. A

    It guarantees that every host automatically receives an IP address.

  2. B

    It does not by itself ensure that upstream paths beyond the gateway are healthy.

  3. C

    It makes the virtual gateway address a physical interface address on every participating router.

  4. D

    It guarantees that the active gateway will forward traffic even if it fails.

14
Written response
1 point

An administrator needs to inspect which router is currently active and which is standby in an HSRP group. Which Cisco IOS command should they use?

15
Choose one
1 point

An OSPF router has two routes to the same destination, with total costs of 18 and 25. Which route does OSPF prefer?

  1. A

    The path with total cost 25, because higher OSPF cost indicates a better path.

  2. B

    The path with total cost 18, because lower OSPF cost is preferred.

  3. C

    Both paths must be used because their costs are different.

  4. D

    Neither path can be selected until their administrative distances are equal.

16
Written response
1 point

A Cisco route-table entry shows [110/20]. What is the administrative distance?

17
Choose one
1 point

A router has local interfaces addressed within 10.0.12.0/30 and 192.168.10.0/24. It is configured with network 10.0.12.0 0.0.0.3 area 0 and network 192.168.10.0 0.0.0.255 area 0. What do these statements do?

  1. A

    They select matching local interfaces and assign them to area 0.

  2. B

    They create static routes to the two remote networks.

  3. C

    They announce arbitrary remote networks without affecting local interfaces.

  4. D

    They select only interfaces that already have OSPF neighbors.

18
Choose one
1 point

A router has a route to 10.0.0.0/8 with a lower administrative distance and a route to 10.1.2.0/24 with a higher administrative distance. Which route is used for a packet destined for 10.1.2.55?

  1. A

    Use 10.0.0.0/8, because its lower administrative distance takes precedence.

  2. B

    Use 10.1.2.0/24, because it is the longest matching prefix.

  3. C

    Use both routes equally because both match the destination.

  4. D

    Drop the packet because routes with different prefix lengths cannot compete.

19
Choose all
1 point

Two routers that should become OSPF neighbors are not forming an adjacency. Select all listed mismatches that are common causes of failed OSPF adjacency.

  1. A

    The interfaces are assigned to different OSPF areas.

  2. B

    The interfaces use different hello or dead intervals.

  3. C

    The interfaces have mismatched authentication settings.

  4. D

    The interfaces have incompatible subnet configurations.

  5. E

    The interfaces use different OSPF network types.

  6. F

    The interfaces have different OSPF costs.

  7. G

    The interfaces have different bandwidths.

20
Choose all
1 point

A fresh DR election is taking place on a broadcast Ethernet segment. Router A has priority 100 and router ID 1.1.1.1; router B has priority 100 and router ID 2.2.2.2; router C has priority 0 and router ID 9.9.9.9. Select all correct statements about this election.

  1. A

    Router B is elected DR because it ties for the highest priority and has the higher router ID than A.

  2. B

    Router C is ineligible to become DR because its priority is zero.

  3. C

    Router C is elected DR because it has the highest router ID, regardless of its priority.

  4. D

    Router A is elected DR because a lower router ID wins a priority tie.