1.

Refer to the exhibit. All routers are running OSPF. What cost would JAX put in its routing table for the 10.0.0.0/24 network?
2
156
1564
1785
1787

2.

Refer to the exhibit. Router1 and Router2 are running OSPF. The show ip ospf neighbor command reveals no neighbors. What is a possible cause?
OSPF autonomous system IDs do not match.
OSPF process IDs do not match.
OSPF network types are identical.
OSPF hello or dead timers do not match.

3. 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 looses power and reboots, what information will be in its routing table after the configuration file is loaded but before OSPF has converged?
All routes for the entire network will be present.
Directly connected networks that are operational will be in the routing table.
Because the SPF algorithm has not completed all calculations, no routes will be in the table.
A summary route for all previously learned routes will automatically appear in the routing table until all LSPs have been received by the router.

4.

Refer to the exhibit. What configuration statements would give the results that are shown in the output of the show ip protocols command?
B(config)# int fa0/0
B(config-if)# router-id 192.168.1.5
B(config)# int lo0
B(config-if)# ip address 192.168.1.5
B(config)# router ospf 1
B(config-router)# router-id 192.168.1.5
B (config)# router ospf 1
B(config-router)# ip address 192.168.1.5

5.

Refer to the exhibit. When OSPF is operational in the exhibited network, what neighbor relationship is developed between Router1 and Router2?
A FULL adjacency is formed.
A 2WAY adjacency is formed.
Router2 will become the DR and Router1 will become the BDR.
Both routers will become DROTHERS.

6. What does OSPF use to calculate the cost to a destination network?
bandwidth
bandwidth and hop count
bandwidth and reliability
bandwidth, load, and reliablity

7.

Refer to the exhibit. The routers in the exhibit are using default OSPF configuration settings to advertise all attached networks. If all of the routers start at the same time, what will be the result of the DR and BDR elections for this single area OSPF network? (Choose three.)
HQ will be DR for 10.4.0.0/16.
Router A will be DR for 10.4.0.0/16.
HQ will be BDR for 10.4.0.0/16.
Router A will be DR for 10.5.0.0/16.
Remote will be DR for 10.5.0.0/16.
Remote will be BDR for 10.5.0.0/16.

8. What does OSPF use to reduce the number of exchanges of routing information in networks where large numbers of neighbors are present? (Choose two.)
root router
backup root router
domain router
backup domain router
designated router
backup designated router

9.

Refer to the exhibit. All routers have been configured with the interface priorities that are shown. All routers were restarted simultaneously. The results of the DR/BDR election are shown. What can be concluded about this network?
Router C cannot win a DR election under any circumstances.
If the link for interface 192.168.1.4 goes down, router B will become the new DR.
The highest router ID was most likely determined via an OSPF router-id statement or statements.
If a new router is added with a higher router ID than router D, it will become the DR.

10.

Refer to the exhibit. Router A is correctly configured for OSPF. Which OSPF configuration statement or set of statements was entered for router B to generate the exhibited routing table?
B(config-router)# network 192.168.1.0 0.0.0.3 area 0
B(config-router)# network 10.16.1.0 0.0.0.224 area 0
B(config-router)# network 10.16.1.0 255.255.255.224 area 0
B(config-router)# network 192.168.1.0 255.255.255.255 area 0
B(config-router)# network 10.0.0.0 255.255.255.255 area 0

11.

Refer to the exhibit. Assuming that the routers have default interface OSPF priorities and no configured loopback interfaces, what two roles will router B play on each network segment? (Choose two.)
DR for network 192.168.1.200
BDR for network 192.168.1.200
DROTHER on 192.168.1.200
DR for network 192.168.1.204
BDR for network 192.168.1.204
DROTHER on network 192.168.1.204

12.

Refer to the exhibit. Routers A, B, C, and D are all running OSPF with default router IDs and OSPF interface priorities. Loopback interfaces are not configured and all interfaces are operational. Router D is the DR and router C is the BDR. What happens immediately after the following commands are entered on router A?
A(config)# interface fa0/0
A(config-if)# ip ospf priority 255
A will become the DR. D will become the BDR.
A will become the DR. C will remain the BDR.
D will remain the DR. A will become the BDR.
D will remain the DR. C will remain the BDR.

13. What range of networks will be advertised in the OSPF updates by the command Router1(config-router)# network 192.168.0.0 0.0.15.255 area 100?
192.168.0.0/24 through 192.168.0.15/24
192.168.0.0/24 through 192.168.15.0/24
192.168.15.0/24 through 192.168.31.0/24
192.168.15.0/24 through 192.168.255.0/24
192.168.16.0/24 through 192.168.255.0/24

14.

Refer to the exhibit. RouterA, RouterB, and RouterC in the diagram are running OSPF on their Ethernet interfaces. Router D was just added to the network. Routers are configured with the loopback interfaces (Lo 0) that are shown in the exhibit. What happens to the OSPF DR/BDR after RouterD is added to the network?
RouterB takes over as DR and RouterD becomes the BDR.
RouterD becomes the BDR and RouterA remains the DR.
RouterD becomes the DR and RouterA becomes the BDR.
RouterC acts as the DR until the election process is complete.
RouterD becomes the DR and RouterB remains the BDR.
There is no change in the DR or BDR until either current DR or BDR goes down.

15.

Refer to the exhibit. How many OSPF adjacencies must be formed to build the complete topology if a DR or BDR were not elected in this OSPF network?
4
5
6
7
10

16. What is the default administrative distance for OSPF?
90
100
110
115
120

17.

Refer to the exhibit. Which command sequence on RouterB will redistribute a gateway of last resort to the other routers in OSPF area 0?
RouterB(config)# router ospf 10 RouterB(config-router)# gateway-of-last-resort 172.16.6.6
RouterB(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0/0
RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6
RouterB(config)# router ospf 10
RouterB(config-router)# default-information originate
RouterB(config)# router ospf 10
RouterB(config-router)# default-network 172.16.6.6 0.0.0.3 area 0
RouterB(config)# ip route 0.0.0.0 0.0.0.0 172.16.6.6
RouterB(config)# ip default-route 0.0.0.0 0.0.0.0 172.16.6.6
RouterB(config)# router ospf 10
RouterB(config-router)# redistribute ip default-route

18. Which two statements describe the use of OSPF DR/BDR elections? (Choose two.)
Elections are always optional.
Elections are required in all WAN networks.
Elections are required in point-to-point networks.
Elections are required in broadcast multiaccess networks.
Elections are sometimes required in NBMA networks.

19.

Refer to the exhibit. What does the “2″ stand for in the router ospf 2 statement?
The number 2 is the autonomous system number.
The number 2 indicates the number of networks advertised by OSPF.
The number 2 identifies this particular instance of OSPF on this router.
The number 2 indicates the priority of the OSPF process on this router.

20.

Refer to the exhibit. The network administrator wants to set the router ID of Router1 to 192.168.100.1. What steps can the administrator take to accomplish this?
shut down the loop back interface
use the OSPF router-id 192.168.100.1 command
use the clear ip ospf process command
nothing, the router-id of Router1 is already 192.168.100.1

21.

Refer to the exhibit. What must be received between neighbors to prevent the dead time that is shown in the exhibit from reaching zero?
any traffic through the router interfaces
routing database updates
hello packets
BPDU packets

22.

Refer to the exhibit. What does the “O*E2″ from the “O*E2 0.0.0.0/0 [110/1] via 192.168.1.1, 00:05:34, Serial0/0″ line represent?
an internal type 2 OSPF route.
an external OSPF route at least two hops away.
an external OSPF route from two different sources.
an external OSPF route that will not increment in cost.
a default route.
The route was distributed into OSPF from a type 2 router.

23.

Refer to the exhibit. Which network command or set of commands will cause OSPF to be enabled for any R1 interface connected to the exhibited subnets?
R1(config-router)# network 10.0.0.0 0.0.0.0 area 0
R1(config-router)# network 10.1.0.0 0.0.0.255 area 0 R1(config-router)# network 10.1.1.0 0.0.0.255 area 0 R1(config-router)# network 10.1.2.4 0.0.0.3 area 0
R1(config-router)# network 10.1.0.0 0.0.0.255 area 0
R1(config-router)# network 10.2.0.0 0.0.0.255 area 0
R1(config-router)# network 10.0.0.0 0.0.255.255 area 0

24.

Refer to the exhibit. What is the cost of the route to the 10.0.0.0 network?
2
110
1786
1.544

25. What three parameters must be indentical between OSPF routers in order to form an adjacency? (Choose three.)
area id
K-values
metric value
hello interval
network type
interface type

1. What two actions will the EIGRP DUAL FSM take if a link to a network goes down? (Choose two.)
put the route into passive mode
query neighbors for a new route
search routing table for a feasible successor
run the SPF algorithm to find a new successor
search topology table for a feasible successor

2.

Host 192.168.1.66 in the network illustrated is unable to ping host 192.168.1.130. How must EIGRP be configured to enable connectivity between the two hosts? (Choose two.)
R1(config-router)# network 192.168.1.128
R1(config-router)# auto-summary
R1(config-router)# no auto-summary
R2(config-router)# no auto-summary
R2(config-router)# auto-summary
R2(config-router)# network 192.168.1.64

3.

Refer to the exhibit. The company is using EIGRP with an autonomous system number of 10. Pings between hosts on networks that are connected to router A and those that are connected to router B are successful.
However, users on the 192.168.3.0 network are unable to reach users on the 192.168.1.32 network. What is the most likely cause of this problem?
IP classless is enabled and is causing the packet to drop.
The command network 192.168.1.32 was not issued on router C.
The routers are not configured in the same EIGRP routing domain.
Automatic summarization of the networks is causing the subnetted routes to be dropped.

4. What information is maintained in the EIGRP topology database for a destination route? (Choose three.)
the routing protocol
the feasible distance of the route
the highest cost of the route
the SRTT value for the route
the route cost as advertised by the neighboring router
the physical address of the gateway interface

5. On a router running EIGRP, what database would maintain a list of feasible successors?
routing table
neighbor table
topology table
adjacency table

6.

Refer to the exhibit. What is indicated by the P at the beginning of the topology entry?
the route is in a stable state
the route is a preferred route
DUAL is searching for a better route to this destination
the exit interface is in passive mode and EIGRP advertisements are blocked

7. In the command router eigrp 20, what is the purpose of the number 20?
specifies the administrative distance for all EIGRP routes
identifies the autonomous system number this EIGRP process will advertise
determines what metric is added to all advertised routes
indicates the number of addresses in the EIGRP routing domain

8.

Refer to the exhibit. In the topology table, what do the numbers 3011840 and 3128695 represent?
the route metric that is applied to those EIGRP routes for this router
the trustworthiness of the routing information source
the composite of the hop count and bandwidth to that destination network
the total metric for that network as advertised by the EIGRP neighbor

9. Which two statements describe characteristics of EIGRP? (Choose two.)
EIGRP is a distance vector routing protocol.
EIGRP supports classless routing and VLSM.
EIGRP is classified as a link-state routing protocol.
EIGRP uses TCP for reliable delivery of EIGRP update packets.
With EIGRP, loop-free paths are achieved through the use of hold-down timers.
EIGRP sends a periodic update every 30 minutes.

10.

Refer to the exhibit. Network 192.168.0.0/28 goes down. What type of packet does Router2 immediately send to Router1 and Router3?
a query for network 192.168.0.0/28
an acknowledgment packet to 224.0.0.9
an update packet that is sent to 255.255.255.255
a packet that contains the new routing table for R2
unicast update packets to 192.168.1.1 and 192.168.2.1

11.

Refer to the exhibit. Which command will advertise the 192.168.1.64/30 network but not the 192.168.1.32 network on router A?
network 192.168.1.0
network 192.168.1.0 255.255.255.0
network 192.168.1.64 0.0.0.3
network 192.168.1.64 0.0.0.7
network 192.168.1.64 0.0.0.255

12. What administrative distance would a router assign to a default route in EIGRP that is learned from a source external to the autonomous system?
1
5
70
90
170
190

13. In which of the following tables does the EIGRP DUAL algorithm store the primary route to a destination? (Choose two.)
routing
topology
neighbor
path
shortest path

14. Which of the following types of routes will be denoted by EX in EIGRP routing table entries? (Choose two.)
routes learned from other routing protocols
routes learned from any non-adjacent EIGRP routers
any route with a hop count metric higher than 224
EIGRP routes that originate in different autonomous systems
all passive routes in the routing table

15. Which term defines a collection of networks under the administrative control of a single entity that presents a common routing policy to the Internet?
autonomous system
contiguous networks
process ID
BGP

16.

Refer to the exhibit. EIGRP is the only routing protocol enabled on this network. No static routes are configured on this router. What can be concluded about network 198.18.1.0/24 from the exhibited output?
A route to network 198.18.1.0/24 is not listed in the routing table.
Packets that are destined for 198.18.1.0/24 will be forwarded to 198.18.10.6.
EIGRP will perform equal cost load balancing across two paths when forwarding packets to 198.18.1.0/24.
The router with interface 172.16.3.2 is a successor for network 198.18.1.0/24.

17.

Refer to the exhibit. All interfaces have been configured with the bandwidths that are shown in the exhibit. Assuming that all routers are using a default configuration of EIGRP as their routing protocol, what path will packets take from the 172.16.1.0/16 network to the 192.168.200.0/24 network?
A,B,E
A,C,E
A,D,E
Packets will load balance across the A,B,E and A,C,E paths.
Packets will load balance across the A,B,E and A,D,E paths.
Packets will load balance across the A,C,E and A,D,E paths.

18. By default, which two metrics are used by EIGRP to determine the best path between networks?
MTU
load
delay
bandwidth
reliability

19. Which of the following statements describes the bounded updates used by EIGRP?
Bounded updates are sent to all routers within an autonomous system.
Partial updates are sent only to routers that need the information.
The updates are sent to all routers in the routing table.
Updates are bounded by the routers in the topology table.

20. The show ip eigrp topology command output on a router displays a successor route and a feasible successor route to network 192.168.1.0/24. In order to reduce processor utilization, what does EIGRP do when the primary route to this network fails?
The router sends query packets to all EIGRP neighbors for a better route to network 192.168.1.0/24.
The DUAL FSM immediately recomputes the algorithm to calculate the next backup route.
Packets that are destined for network 192.168.1.0/24 are sent out the default gateway instead.
The backup route to network 192.168.1.0/24 is installed in the routing table.

21.

Refer to the exhibit. Based on the output of show ip eigrp neighbors, what are two possible problems with adjacencies between Router1 and Router2? (Choose two.)
The routers are configured with different EIGRP process IDs.
Automatic summarization was disabled.
The hello timer for R1 was altered.
The serial interfaces for both routers are in different networks.
No feasible successors were found.

22.

Refer to the exhibit. This is the debug output from 2 directly connected EIGRP routers. They are not forming an adjacency. What is the cause?
one router is a non-cisco router
they have different autonomous-system numbers
they are using difference sequence numbers
they are sending incorrect hello types

1.

Refer to the exhibit. The network that is shown is running RIPv1. The 192.168.10.0/24 network was recently added and will only contain end users. What command or set of commands should be entered on Router1 to prevent RIPv1 updates from being sent to the end user devices on the new network while still allowing this new network to be advertised to other routers?
Router1(config-router)# no router rip Router1(config-router)# network 192.168.10.0
Router1(config-router)# no network 192.168.10.0
Router1(config-router)# passive-interface fastethernet 0/0
Router1(config-router)# passive-interface serial 0/0/0

2.

Refer to the output from the show ip route command. What can be concluded from the output of this router command?
A preferred route to the destination has not been set.
There are two equal cost paths to network 1.0.0.0.
Both interfaces are being used equally to route traffic.
A variance must be set to load-balance across multiple paths.

3.

Refer to the exhibit. The Ethernet interface on Router2 goes down and the administrator notices that the route is still in the Router1 routing table. How much longer will Router1 keep the down network in its routing table before marking it as possibly down?
30 seconds
90 seconds
155 seconds
180 seconds
255 seconds

4. What is the default update period in seconds for the RIP routing protocol?
10
12
15
20
30
60

5. Which of the following is considered a limitation of RIP v1?
RIP v1 does not send subnet mask information in its updates.
RIP v1 is not widely supported by networking hardware vendors.
RIP v1 consumes excessive bandwidth by multicasting routing updates using a Class D address.
RIP v1 requires enhanced router processors and extra RAM to function effectively.
RIP v1 does not support load balancing across equal-cost paths.
RIP v1 authentication is complicated and time-consuming to configure.

6. Which command will display RIP activity as it occurs on a router?
debug ip rip
show ip route
show ip interface
show ip protocols
debug ip rip config
show ip rip database

7. What are three characteristics of the RIPv1 routing protocol? (Choose three.)
supports the use of VLSM
uses hop count as a metric
considers a metric of 16 as infinity
has an administrative distance of 110 by default
includes the destination IP address and subnet mask in routing updates
calculates metrics using the Bellman Ford algorithm

8.

Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks?
RouterB# router rip
RouterB(router)# network 210.36.7.0 RouterB(router)# network 220.17.29.0 RouterB(router)# network 211.168.74.0
RouterB(config)# router rip RouterB(config-router)# network 198.16.4.0 RouterB(config-router)# network 211.168.74.0 RouterB(config-router)# network 199.84.32.0
RouterB(config)# configure router rip RouterB(config-router)# network 210.36.7.0 RouterB(config-router)# network 199.84.32.0 RouterB(config-router)# network 211.168.74.0
RouterB(config)# router rip RouterB(config-router)# network 198.16.4.0 RouterB(config-router)# network 210.36.7.0 RouterB(config-router)# network 211.168.74.0
RouterB(config)# router rip RouterB(config-router)# network 198.16.4.0 RouterB(config-router)# network 210.36.7.0 RouterB(config-router)# network 220.17.29.0

9.

Refer to the exhibit. All routers are configured with valid interface addresses in the indicated networks and are running RIPv1. The network is converged. Which routes are present in the routing tables?
All routers have all routes in their routing table.
All routers have all /30 routes, but do not have /24 routes in their routing table.
All routers have all /30 routes. Routers A and E also have some of the /24 routes in their routing table.
All routers have all /30 routes. Routers B and D also have some of the /24 routes in their routing table.
Routers A and E have all routes. Routers B and D have only /30 routes in their routing table.
Routers A and E have only /24 routes. Routers B and D have only /30 routes in their routing table.

10. What will happen if an interface IP address is entered for the address portion of the network command in a RIPv1 configuration instead of a network address?
The router will reject the command.
A route to the host address will be added to outgoing RIP updates.
A route to the host address will be added to the routing table.
All interfaces in the same classful network as the configured address will be included in the RIPv1 routing process.

11.

Refer to the exhibit. Router1 and Router2 are running the RIPv1 protocol. The network administrator configures the command network 10.1.0.0 on Router1. What network will Router1 advertise to Router2?
10.1.0.0/16
10.1.0.0/8
10.0.0.0/16
10.0.0.0/8

12.

Refer to the exhibit. All routers in the exhibit are running RIP v1. The network administrator issues the show ip route command on router A. What routes would appear in the routing table output if the network is converged? (Choose two).
R 192.168.2.0/24 [120/1]
C 192.168.2.0/24 [120/1]
R 10.10.3.0/24 [120/0]
C 10.10.3.0/24 [120/1]
R 10.10.1.0/24 [120/2]
R 10.10.1.0/24 [120/3]

13.

Refer to the exhibit. A network consists of multiple routers. What can be verified when the show ip protocols command is issued on one of the routers in the network?
whether all routes in the network have been properly added to the routing table
routing protocol configuration in use for IP on this router
operational status of routing protocols in use on all routers in the network
routing metric of each network that is listed in the routing table

14.

Refer to the exhibit. What can be concluded from the routing table output of router B?
A static default route has been configured on B.
The default-information originate command has been entered on A.
All traffic that is destined for 192.168.1.1 will be sent to address 0.0.0.0.
Hosts on the 10.16.1.0/27 network have 192.168.1.1 configured as the default gateway address.

15. The following line was displayed in the output of the show ip route command. R 192.168.3.0/24 [120/3] via 192.168.2.2, 00:00:30, Serial0/0 What is the value of the routing metric?
3
12
20
30
120

16.

Refer to the exhibit. All routers that are shown are running the RIP routing protocol. All unknown IP traffic must be forwarded to the ISP. What router or set of routers are recommended to have both a default route and the default-information originatecommand issued to implement this forwarding policy?
only Router1
only the gateway router
all routers in the network
only the routers with LANs needing Internet access

17.

Refer to the exhibit. Router1 is running RIPv1. What command was entered into Router1 to configure the gateway of last resort?
no auto-summary
ip default-network 0.0.0.0
ip default-gateway 10.0.0.0
ip route 0.0.0.0 0.0.0.0 S0/0/1

18. Which command or set of commands will stop the RIP routing process?
RouterB(config)# router rip RouterB(config-router)# shutdown
RouterB(config)# router rip RouterB(config-router)# network no 192.168.2.0
RouterB(config)# no router rip
RouterB(config)# router no rip

19. Which two statements are true regarding the characteristics of RIPv1? (Choose two).
It is a distance vector routing protocol.
It advertises the address and subnet mask for routes in routing updates.
The data portion of a RIP message is encapsulated into a TCP segment.
The data portion of a RIP message is encapsulated into a UDP segment.
It broadcasts updates every 15 seconds.
It allows a maximum of 15 routers in the routing domain.

20.

Refer to the exhibit. RIPv1 is running on all three routers. All interfaces have been correctly configured with addresses in the address ranges that are shown. Which route would you see in the routing table on router CHI if the routers are configured with the commands that are displayed in the exhibit?
192.168.0.4/30
192.168.0.0/24
192.168.0.0/16
192.168.0.32/27

21. Refer to the exhibit. The Ethernet interface on Router2 goes down and the administrator notices that the route is still valid in the routing table of Router1. How much longer will it take for Router1 to mark the route invalid by setting the metric to 16?
30 seconds
90 seconds
155 seconds
180 seconds
255 seconds