Router 1 has a Fast Ethernet interface 0/0 with IP address 10.1.1.1. The interface is connected to a switch. This connection is then migrated to use 802.1Q trunking. Which of the following commands could be part of a valid configuration for Router 1’s Fa0/0 interface? (Choose two answers.)

1. interface fastethernet 0/0.4

2. dot1q enable

3. dot1q enable 4

4. trunking enable

5. trunking enable 4

6. encapsulation dot1q 4

7. Router R1 has a router-on-a-stick (ROAS) configuration with two subinterfaces of interface G0/1: G0/1.1 and G0/1.2. Physical interface G0/1 is currently in a down/down state. The network engineer then configures a shutdown command when in interface configuration mode for G0/1.1 and a no shutdown command when in interface configuration mode for G0/1.2. Which answers are correct about the interface state for the subinterfaces? (Choose two answers.)

   1. G0/1.1 will be in a down/down state.
   2. G0/1.2 will be in a down/down state.
   3. G0/1.1 will be in an administratively down state.
   4. G0/1.2 will be in an up/up state.

8. A Layer 3 switch has been configured to route IP packets between VLANs 1, 2, and 3 using SVIs, which connect to subnets 172.20.1.0/25, 172.20.2.0/25, and 172.20.3.0/25, respectively. The engineer issues a show ip route connected command on the Layer 3 switch, listing the connected routes. Which of the following answers lists a piece of information that should be in at least one of the routes?

   a. Interface Gigabit Ethernet 0/0.3

   b. Next-hop router 172.20.2.1

   c. Interface VLAN 2

   d. Mask 255.255.255.

9. An engineer has successfully configured a Layer 3 switch with SVIs for VLANs 2 and 3. Hosts in the subnets using VLANs 2 and 3 can ping each other with the Layer 3 switch routing the packets. The next week, the network engineer receives a call that those same users can no longer ping each other. If the problem is with the Layer 3 switching function, which of the following could have caused the problem? (Choose two answers.)

   a. Six (or more) out of 10 working VLAN 2 access ports failing due to physical problems

   b. A shutdown command issued from interface VLAN 4 configuration mode

   c. VTP on the switch removing VLAN 3 from the switch’s VLAN list

   d. A shutdown command issued from VLAN 2 configuration mode

10. A LAN design uses a Layer 3 EtherChannel between two switches SW1 and SW2, with port-channel interface 1 used on both switches. SW1 uses ports G0/1, G0/2, and G0/3 in the channel. Which of the following are true about SW1’s configuration to make the channel be able to route IPv4 packets correctly? (Choose two answers.)

    a. The ip address command must be on the port-channel 1 interface.

    b. The ip address command must be on interface G0/1 (lowest numbered port).

    c. The port-channel 1 interface must be configured with the no switchport command.

    d. Interface G0/1 must be configured with the routedport command.

Answers:

1 A, F

2 B, C

3 C

4 C, D

5 A, C