1. What are the steps which must be completed in order to
enable inter-VLAN routing using router-on-a-stick?
Create the VLANs on the switch to include port membership
assignment and configure subinterfaces on the router matching the VLANs.
2. Refer to the exhibit. R1 is routing between networks
192.168.10.0/28 and 192.168.30.0/28. PC1 can ping R1 interface F0/1, but cannot
ping PC3. What is causing this failure?
The PC3 network address configuration is incorrect.
3. Which statement is true about ARP when inter-VLAN routing
is being used on the network?
When router-on-a-stick inter-VLAN routing is in use, the
router returns the MAC address of the physical interface in response to ARP
requests.
4. In which situation could individual router physical
interfaces be used for InterVLAN routing, instead of a router-on-a-stick
configuration?
a network with a limited number of VLANs
5. Refer to the exhibit. Switch1 is correctly configured for
the VLANs that are displayed in the graphic. The configuration that is shown
was applied to RTA to allow for interVLAN connectivity between hosts attached
to Switch1. After testing the network, the administrator logged the following
report:
Hosts within each VLAN can communicate with each other.
Hosts in VLAN5 and VLAN33 are able to communicate with each
other.
Hosts connected to Fa0/1 through Fa0/5 do not have
connectivity to host in other VLANs.
Why are hosts connected to Fa0/1 through Fa0/5 unable to
communicate with hosts in different VLANs?
The router was not configured to forward traffic for VLAN2.
6. What is important to consider while configuring the
subinterfaces of a router when implementing inter-VLAN routing?
The IP address of each subinterface must be the default
gateway address for each VLAN subnet.
7. Refer to the exhibit. Which two statements are true about
the operation of the subinterfaces? (Choose two.)
Incoming traffic that has a VLAN ID of 2 is processed by
subinterface fa0/0.2.
Traffic inbound on this router is processed by different
subinterfaces, depending on the VLAN from which the traffic originated.
8. Refer to the exhibit. The commands for a router to
connect to a trunked uplink are shown in the exhibit. A packet is received from
IP address 192.168.1.54. The packet destination address is 192.168.1.120. What
will the router do with this packet?
The router will forward the packet out interface
FastEthernet 0/1.2 tagged for VLAN 60.
9. Refer to the exhibit. PC1 has attempted to ping PC2 but
has been unsuccessful. What could account for this failure?
The encapsulation command on the R1 F0/0.3 interface is
incorrect.
10. Refer to the exhibit. What two conclusions can be drawn
from the output that is shown? (Choose two.)
Both of the directly connected routes that are shown will
share the same physical interface of the router.
Inter-VLAN routing between hosts on the 172.17.10.0/24 and
172.17.30.0/24 networks is successful on this network.
11. Refer to the exhibit. Which three statements describe the
network design shown in the exhibit? (Choose three.)
This design will not scale easily.
This design uses more switch and router ports than are
necessary.
If the physical interfaces between the switch and router are
operational, the devices on the different VLANs can communicate through the
router.
12. Devices on the network are connected to a 24-port Layer
2 switch that is configured with VLANs. Switch ports 0/2 to 0/4 are assigned to
VLAN 10. Ports 0/5 to 0/8 are assigned to VLAN 20, and ports 0/9 to 0/12 are
assigned to VLAN 30. All other ports are assigned to the default VLAN. Which
solution allows all VLANs to communicate between each other while minimizing
the number of ports necessary to connect the VLANs?
Add a router to the topology and configure one FastEthernet
interface on the router with multiple subinterfaces for VLANs 1, 10, 20, and
30.
13. Refer to the exhibit. Port Fa0/0 on router R1 is
connected to port Fa0/1 on switch S1. After the commands shown are entered on
both devices, the network administrator determines that the devices on VLAN 2
are unable to ping the devices on VLAN 1. What is the likely problem?
R1 is configured for router-on-a-stick, but S1 is not
configured for trunking.
14. A router has two FastEthernet interfaces and needs to
connect to four VLANs in the local network. How can this be accomplished using
the fewest number of physical interfaces without unnecessarily decreasing
network performance?
Implement a router-on-a-stick configuration.
15. What distinguishes traditional routing from
router-on-a-stick?
Traditional routing uses one port per logical network.
Router-on-a-stick uses subinterfaces to connect multiple logical networks to a
single router port.
16. What two statements are true regarding the use of subinterfaces
for inter-VLAN routing? (Choose two.)
fewer router ports required than in traditional inter-VLAN
routing
less complex physical connection than in traditional
inter-VLAN routing
17. Which three elements must be used when configuring a
router interface for VLAN trunking? (Choose three.)
one subinterface per VLAN
one IP network or subnetwork for each subinterface
a compatible trunking protocol encapsulation for each
subinterface
18. Refer to the exhibit. The network administrator
correctly configures RTA to perform inter-VLAN routing. The administrator
connects RTA to port 0/4 on SW2, but inter-VLAN routing does not work. What
could be the possible cause of the problem with the SW2 configuration?
Port 0/4 is configured in access mode.
19. Which two statements are true about the interface
fa0/0.10 command? (Choose two.)
The command is used in the configuration of
router-on-a-stick inter-VLAN routing.
The command configures a subinterface.
20. Refer to the exhibit. All devices are configured as
shown in the exhibit. PC2 can successfully ping the F0/0 interface on R1. PC2
cannot ping PC1. What might be the reason for this failure?
S1 interface F0/8 is in the wrong VLAN.
CCNA 3 Chapter 6 Answers |
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