CCNA 2 Routing and Switching Essentials v5 Chapter 5: Inter-VLAN Routing – Check Your Understanding Questions Answers
1. Classify each item as either physical interface or subinterface.
one physical interface for many VLANs
access mode switch port connection
complex cable configuration
trunk mode switch port connection
one physical interface per VLAN
|one physical interface for many VLANs||subinterface|
|access mode switch port connection||physical interface|
|complex cable configuration||physical interface|
|trunk mode switch port connection||subinterface|
|one physical interface per VLAN||physical interface|
2. Classify each item as either router-on-a-stick, Layer 3 switch routing, or both.
____ all VLANs share a single cable
____ multiple SVIs
____ trunk mode switch port connection
____ an IP address per VLAN
____ routed port
|router-on-a-stick||all VLANs share a single cable|
|Layer 3 switch routing||faster|
|Layer 3 switch routing||trunk mode switch port connection|
|routeron-a-stick both||an IP address per VLAN|
|Layer 3 switch routing||routed port|
3. What are three advantages of having a single trunk link on a switch and subinterfaces on the router instead of individual VLAN links between a switch that has three VLANs and a router to route between the VLANs? (Choose three.)
- It would free two switch and router ports.
- It would reduce the complexity of the cabling runs.
- It would increase the amount of bandwidth available for inter-VLAN routing.
- It would allow for less complex troubleshooting of inter-VLAN routing issues.
- It would allow adding more VLANs without requiring more cabling or switch ports.
- It would allow for less-complex configuration of inter-VLAN routing.
4. What condition is required to enable Layer 3 switching?
- The Layer 3 switch must have IP routing enabled.
- All participating switches must have unique VLAN numbers.
- All routed subnets must be on the same VLAN.
- Inter-VLAN portions of Layer 3 switching must use router-on-a-stick.
5. When implementing router-on-a-stick, what is necessary for establishing communication between VLANs?
- Multiple switch ports to connect to a single router interface
- Native VLAN IP address that is configured on the router physical interface
- All trunk ports configured in access mode
- Router subinterfaces
6. How does the router-on-a-stick model for inter-VLAN routing differ from traditional routing?
- The router-on-a-stick model uses multiple physical interfaces on the router, each configured with a different Layer 3 address.
- The router-on-a-stick model uses a single physical interface on the router with only the no shutdown command issued.
- The router-on-a-stick model uses subinterfaces on the router with only the no shutdown command issued on the physical interface.
- The router-on-a-stick model uses subinterfaces on the switch with only the no shutdown command issued on the physical interface.
7. Which command does the network administrator use to determine whether inter-VLAN communication is functioning?
- show vlan
- show interfaces
8. Which three options are valid inter-VLAN routing methods? (Choose three.)
- Traditional routing
- Spanning-tree routing
- 802.1Q routing
- Multilayer switch-based routing
9. A network technician is configuring a router to support inter-VLAN routing. After entering interface G0/0 configuration mode, the network administrator attempts to enter the command encapsulation dot1q 10. The router refuses to accept this command. What could account for this failure?
- Router port G0/0 is not physically connected to the switch.
- VLAN0001 has been renamed.
- R1 interface G0/0 was configured for subinterface operation.
- This command can be configured only on router subinterfaces.
- Interface G0/0 on the switch is shut down.
10. How many physical interfaces are required to perform inter-VLAN routing with each method indicated?
Legacy inter-VLAN routing: __________
Multilayer switching: _________
|Legacy inter-VLAN routing||one physical port per VLAN|
|Router-on-a-stick||one physical interface (but multiple subinterfaces)|
11. What command would be used to determine if all SVIs were “up and up” on a multilayer switch?
- show vlans
- show ip interface brief
- show running-config
- show interface switchport
12. A router-on-a-stick configuration will not allow PC1 on VLAN 10 to communicate with PC2 on VLAN 11. Which two of the following could be the problem? (Choose two.)
- The physical port on the router is shut down.
- The switch SVI is not “up and up.”
- The port between the switch and the router is not a routed port.
- The port between the switch and the router has been placed in access mode.
- One or both of the router subinterfaces have been configured with an IP address in a different network.