Take Assessment – ERouting Practice Final Exam – CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
Refer to the exhibit. A network administrator has configured R1 as shown, and all interfaces are functioning correctly. A ping from R1 to 172.16.1.1 fails. What could be the cause of this problem?
The serial interface on R1 is configured incorrectly.
The default route is configured incorrectly.
The default-information originate command must be issued on R1.
Autosummarization must be disabled on R1.
Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26?
The packet will be dropped.
The packet will be forwarded to the gateway of last resort.
The packet will match the 192.168.0.0 network and be forwarded out Serial 0/0.
The packet will most closely match the 192.168.0.8 subnet and be forwarded out Serial 0/1.
Which two components are used to determine the router ID in the configuration of the OSPF routing process? (Choose two.)
the IP address of the first FastEthernet interface
the highest IP address of any logical interface
the highest IP address of any physical interface
the default gateway IP address
the priority value of 1 on any physical interface
What are two reasons for the occurrence of a routing loop? (Choose two.)
incorrectly configured static routes
routes that are learned via two routing protocols
static and dynamic routing being used on the same router
lack of a default route on the router that connects to the Internet
The address assigned to the Ethernet0 interface of Router1 is a broadcast address for that subnetwork.
The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.
The subnetwork assigned to the Serial0 interface of Router1 is on a different subnetwork from the address for Serial0 of Router2.
R1 is originating the route 172.30.200.32/28.
Automatic summarization is disabled.
The 172.30.200.16/28 network is one hop away from R1.
Which procedure can resolve this problem?
Configure a static route on R1 using the IP address of the serial interface on R1.
Configure a default route on R1 with the exit interface Fa0/0 on R1.
Configure a static route on R1 using the IP address of S0/0/0 on R2.
Configure a default route on R1 using the IP address of Fa0/0 on R2.
Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1?
Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A?
All of the 192.168.x.0 networks will be in the routing table.
Routes to networks 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 will be in the routing table.
The routing table will be empty because routes and dynamic routes have not been configured.
A default route is automatically installed in the routing table to allow connectivity between the networks.
Which two statements are true about the startup configuration in a router? (Choose two.)
The router uses the startup configuration file to start POST.
If the Cisco IOS cannot be found, the router enters setup mode.
The bootstrap program searches for the startup configuration file in NVRAM.
If the startup config file cannot be found, the router enters ROMMON mode.
The router searches for a TFTP server if the startup configuration file is absent at the default location.
Refer to the exhibit. All routers are running the same routing protocol. Based on the exhibit and its displayed commands, which statement is true?
The wildcard mask is incorrectly configured.
A default route must be configured on every router.
Routers B, C, and D have no access to the Internet.
The link to the ISP is not advertised by the routing protocol process.
When a router boots, what is the default order to locate the Cisco IOS if there is no boot system command?
ROM, TFTP server, flash
flash, TFTP server, ROM
flash, NVRAM, TFTP server
NVRAM, TFTP server, flash
Refer to the exhibit. Although both the routers can ping the serial interface of their neighbors, they are unable to ping the Ethernet interfaces of other routers. Which two statements are true for this network? (Choose two.)
The administrative distance has been set to 50 on both routers.
R2 is learning about network 192.168.1.0.
R1 is learning about network 192.168.2.0.
The network 10.1.1.0 command has not been run on both routers.
Autosummarization is enabled on both routers.
Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network?
The router chooses the first path that it learned and installs only that route in the routing table.
The router chooses the path with the lowest administrative distance and installs only that route in the routing table.
The router chooses the highest routing ID based on the advertised network IP addresses and installs only that route in the routing table.
The router installs all the equal cost paths in the routing table but sends packets out only one, holding the others in reserve in case the primary route goes down.
The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces.
Take Assessment – ERouting Practice Final Exam – CCNA Exploration: Routing Protocols and Concepts (Version 4.0)
What are three features of CDP? (Choose three.)
tests Layer 2 connectivity
provides a layer of security
operates a OSI layers 2 and 3
enabled by default on each interface
used for debugging Layer 4 connectivity issues
provides information on directly connected devices that have CDP enabled
What is the function of the OSPF LSR packet?
It is used to confirm the receipt of LSUs.
It is used to establish and maintain adjacency with other OSPF routers.
It is used by the receiving routers to request more information about any entry in the DBD.
It is used to check the database synchronization between routers.
What is the first step OSPF and IS-IS routers take in building a shortest path first database?
learn about directly connected networks
send hello to discover neighbors and form adjacencies
choose successors and feasible successors to populate the topology table
flood LSPs to all neighbors informing them of all known networks and their link states
Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. The PC is not communicating with the network properly. What is the cause?
The default gateway is incorrect.
The address is in the wrong subnet.
The host address and default gateway are swapped.
192.168.10.31 is the broadcast address for this subnet.
Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.)
Router1 is missing a route to the 172.16.0.0 network
Router1 is missing a route to the 192.168.1.0 network
Router2 is missing a route to the 10.0.0.0 network
Router2 is missing a route to the 172.16.0.0 network
Router3 is missing a route to the 10.0.0.0 network
Router3 is missing a route to the 192.168.0.0 network
What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.)
The routers must elect a designated router.
The routers must agree on the network type.
The routers must use the same dead interval.
The routers must exchange link state requests.
The routers must exchange database description packets.
Refer to the exhibit. All routes are advertised and fully operational on all routers. Which statement is true about the path that the data will take from router A to router B?
If EIGRP is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, B.
If RIPv1 is used with default configurations, the data will be load-balanced on all paths.
If EIGRP and OSPF are both used with default configurations, the data will be sent through paths learned by the OSPF protocol.
If RIPv2 is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, D.
Refer to the exhibit. A ping between host A and host B is successful, but pings from host A to operational hosts on the Internet fail. What is the reason for this problem?
The FastEthernet interface of R1 is disabled.
One of the default routes is configured incorrectly.
A routing protocol is not configured on both routers.
The default gateway has not been configured on host A.
Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event?
Router5 flushes the unreachable route from its routing table in 30 seconds.
Router4 will learn about the failed route 30 seconds later in the next periodic update.
Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.
Split horizon will prevent Router4 from fowarding packets to the 10.0.0.0 network until the holddown timer expires.
The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?
IP classless has been disabled on the Suffolk router.
The ip subnet-zero command was not configured on the Suffolk router.
The Richmond router is in a different autonomous system than the Suffolk router.
The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates.
A network is using RIP as the routing protocol. The router learns that the same destination can be reached via five different paths. All paths have the same metric, and all routers are using the default operation.
Which statement correctly describes the path used by the router?
It will use the first available path to the destination.
It will use only the first two paths that it learned.
It will use four of the five paths.
It will load-balance using all five paths.
Refer to the exhibit. Both routers are using the RIP protocol. Devices on the 192.168.1.1 network can ping the S0/0/0 interface on R2 but cannot ping devices on the 192.168.2.1 network.
What is a possible cause of this problem?
The routers are configured with different versions of RIP.
R2 is not forwarding the routing updates.
The R1 configuration should include the no auto-summary command.
The maximum path number has been exceeded.
Refer to the exhibit. To implement the RIPv2 protocol, the network administrator runs the commands as displayed. However, the show ip protocol command fails to display any output. How can the administrator solve the problem that is indicated by the lack of output from this command?
Include the default-information originate command.
Include the no auto-summary command.
Specify the network for which RIP routing has to be enabled.
Implement RIPv2 authentication in the network.
Refer to the exhibit. R2 is configured correctly. The network administrator has configured R1 as shown. Which two facts are true about the forwarding of route information by R1? (Choose two.)
R1 will forward the route information for subnet 192.168.100.0/30.
R1 will not forward route information for subnet 192.168.100.4/30.
R1 will forward the route information with an administrative distance set to 50.
R1 will forward the summarized route information for network 192.168.100.0/24.
R1 will forward route information for subnet 10.10.10.0/30 out the serial interface.
Refer to the exhibit. An administrator is adding a new subnet of 50 hosts to R3. Which subnet address should be used for the new subnet that provides enough addresses while wasting a minimum of addresses?
Using dynamic routing instead of static routing would have required fewer configuration steps.
The 10.1.1.0/24 and 10.1.2.0/24 routes have adjacent boundaries and should be summarized.
Packets routed to the R2 Fast Ethernet interface require two routing table lookups.
The static route will not work correctly.
Refer to the exhibit. All interfaces are configured with the correct IP addresses and subnet masks. OSPF has been configured as the routing protocol. During troubleshooting, it is determined that hosts on network B can ping the Lo0 interface on R1 but are unable to reach hosts on network A. What is the cause of the problem?
Routers R1 and R2 have incorrect router IDs configured.
Router R1 is unable to form a neighbor relationship with router R2.
Routers R1 and R2 have been configured in different OSPF areas.
The configuration of router R1 fails to include network A in the OSPF routing process.
A network administrator needs to configure a single router to load-balance the traffic over unequal cost paths. Which routing protocol should the administrator use?
A network administrator has been asked to configure a network using a classful IP addressing scheme. Which statement is true about the IP addressing that will be used?
Classful IP addresses can be used only when static routing is configured in the network.
Classful IP addresses allow the network/host boundary to occur at any bit in the 32-bit address.
The subnet mask for classful IP addresses can be determined by the value of the first octet of the IP address.
Classful IP addresses require the subnet mask to be included in the routing updates that are propagated by the classful routing protocols.
Refer to the exhibit. The output of the show ip route command for router R1 is displayed. What action will the router take for a packet that is destined for 192.168.1.5?
It will drop the packet.
It will forward the packet to interface Serial0/0/0.
It will determine the route for the packet through a routing protocol.
It will forward the packet to the default gateway.
Refer to the exhibit. All routers are running RIPv1. The two networks 10.1.1.0/29 and 10.1.1.16/29 are unable to access each other. What can be the cause of this problem?
Because RIPv1 is a classless protocol, it does not support this access.
RIPv1 does not support discontiguous networks.
RIPv1 does not support load balancing.
RIPv1 does not support automatic summarization.
Refer to the exhibit. A network administrator successfully pings R1 from R3. Next, the administrator runs the show cdp neighbors command on R3. The output of this command is displayed.
What are two reasons for the absence of R1 in the output? (Choose two.)
There is a Layer 2 connectivity problem between R1 and R3.
The Fa0/0 interface of R1 is configured with an incorrect IP address.
The no cdp run command has been run at R1.
The no cdp enable command has been run at Fa0/1 interface of R3.
Refer to the exhibit. The routers are properly configured using a dynamic routing protocol with default settings, and the network is fully converged. Router A is forwarding data to router E. Which statement is true about the routing path?
If the network uses the RIP protocol, router A will determine that all paths have equal cost.
If the network uses the RIP protocol, router A will update only the A-C-E path in its routing table.
If the network uses the EIGRP routing protocol, router A will determine that path A-D-E has the lowest cost.
If both RIP and EIGRP protocols are configured on router A, the router will use the route information that is learned by the RIP routing protocol.
Refer to the exhibit. The show cdp neighbors command was run at R1. Which two facts about the newly detected device can be determined from the output? (Choose two.)
ABCD is a router that is connected to R1.
ABCD is a non-CISCO device that is connected to R1.
The device is connected at the Serial0/0/1 interface of R1.
R1 is connected at the S0/0/1 interface of device ABCD.
The Dijkstra algorithm will calculate the feasible successor.
DUAL will query neighbors for a route to network 192.168.1.0.
Neighbor 172.16.3.2 will be promoted to the feasible successor.
Traffic destined to the 192.168.1.0 network will be dropped immediately due to lack of a feasible successor.
What are two functions of a router? (Choose two.)
It connects multiple IP networks.
It controls the flow of data via the use of Layer 2 addresses.
It determines the best path to send packets.
It manages the VLAN database.
It increases the size of the broadcast domain.
A network administrator uses the RIP routing protocol to implement routing within an autonomous system. What are two characteristics of this protocol? (Choose two.)
It uses the Bellman-Ford algorithm to determine the best path.
It displays an actual map of the network topology.
It offers rapid convergence in large networks.
It periodically sends complete routing tables to all connected devices.
It is beneficial in complex and hierarchically designed networks.
A network is configured with the IP, IPX, and AppleTalk protocols. Which routing protocol is recommended for this network?
The two routers are connected on a multiaccess network.
The hello and dead intervals are different on the two routers.
They have different OSPF router IDs.
They have different process IDs.
Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table?
Both routes are installed and load balancing occurs across both paths.
The route via Path B is installed because the EIGRP route has the best metric to network 10.2.0.0/16.
The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16.
The route via Path B is installed because the EIGRP route has the lowest administrative distance to network 10.2.0.0/16.
The route via Path A is installed because the static route has the lowest administrative distance to network 10.2.0.0/16.
Which two statements are true regarding link-state routing protocols? (Choose two.)
They are aware of the complete network topology.
They offer rapid convergence times in large networks.
They do not include subnet masks in their routing updates.
They rely on decreasing hop counts to determine the best path.
They do not work well in networks that require special hierarchical designs.
It will drop the packet.
It will forward the packet via the S0/0/0 interface.
It will forward the packet via the Fa0/0 interface.
It will forward the packet to R1.
What should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose two.)
OSPF interval timers mismatch
administrative distance mismatch
interface network type mismatch
no loopback interface configured
gateway of last resort not redistributed
A router has EIGRP configured as the only routing protocol. In what way might EIGRP respond if there is no feasible successor route to a destination network and the successor route fails?
It broadcasts hello packets to all routers in the network to re-establish neighbor adjacencies.
It sends queries to adjacent neighbors until a new successor route is found.
It immediately sends its entire routing table to its neighbors.
It will set the metric for the failed route to infinity.
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