Cisco chapter 6 exam – Flashcards
23 test answers
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When a Cisco switch receives untagged frames on a 802.1Q trunk port, which VLAN ID is the traffic switched to by default?
answer
native VLAN ID
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question
Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?
answer
Port Fa0/11 will be returned to VLAN 1.
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Which command is used to remove only VLAN 20 from a switch?
answer
no vlan 20
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What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch?
answer
The port becomes inactive
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Which two characteristics match extended range VLANs?
answer
They are saved in the running-config file by default.
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question
A Cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a switchport trunk allowed vlan 30 command on Fa0/5?
answer
It allows only VLAN 30 on Fa0/5.
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question
PC-A and PC-B are both in VLAN 60. PC-A is unable to communicate with PC-B. What is the problem?
answer
The VLAN that is used by PC-A is not in the list of allowed VLANs on the trunk
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DLS1 is connected to another switch, DLS2, via a trunk link. A host that is connected to DLS1 is not able to communicate to a host that is connected to DLS2, even though they are both in VLAN 99. Which command should be added to Fa0/1 on DLS1 to correct the problem?
answer
switchport trunk native vlan 66
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What is a characteristic of legacy inter-VLAN routing?
answer
The router requires one Ethernet link for each VLAN.
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What is a disadvantage of using router-on-a-stick inter-VLAN routing?
answer
does not scale well beyond 50 VLANs
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Router RA receives a packet with a source address of 192.168.1.35 and a destination address of 192.168.1.85. What will the router do with this packet?
answer
The router will forward the packet out interface FastEthernet 0/1.2.
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In what switch mode should port G0/1 be assigned if Cisco best practices are being used?
answer
trunk
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A small college uses VLAN 10 for the classroom network and VLAN 20 for the office network. What is needed to enable communication between these two VLANs while using legacy inter-VLAN routing?
answer
A router with at least two LAN interfaces should be used.
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A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will have to be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface?
answer
4
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When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where should the IP address be assigned?
answer
to the subinterface
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A high school uses VLAN15 for the laboratory network and VLAN30 for the faculty network. What is required to enable communication between these two VLANs while using the router-on-a-stick approach?
answer
A switch with a port that is configured as a trunk is needed when connecting to the router.
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question
A router-on-a-stick configuration was implemented for VLANs 15, 30, and 45, according to the show running-config command output. PCs on VLAN 45 that are using the 172.16.45.0 /24 network are having trouble connecting to PCs on VLAN 30 in the 172.16.30.0 /24 network. Which error is most likely causing this problem?
answer
There is an incorrect IP address configured on GigabitEthernet 0/0.30.
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The ___________ command displays the VLAN assignment for all ports as well as the existing VLANs on the switch.
answer
show vlan
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Which PCs will receive the broadcast sent by PC-C?
answer
PC-D, PC-E
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