3.1 CCNA 3 - Module 8

Which approach to assigning VLAN membership
maximizes forwarding performance?
membership by MAC address
membership by logical address
membership by protocol
membership by port
membership by operating system

What are the characteristics of VLAN1 in a
default switch configuration? (Choose three.)
CDP messages are only sent on VLAN1.
VLAN1 is reserved for links between switches.
All switch ports are members of VLAN1.
VLAN1 must be created before ports can be
assigned to it.
Only switch port 0/1 is assigned to VLAN1.
An IP address configured on the switch will only
apply to ports on VLAN1.

How does a bridge handle the frames that it receives?
(Choose three.)
If the source is unknown, the source port is shutdown.
If the source port of a frame is unknown, a bridge will
issue an ARP request.
If the destination is on another segment, the bridge
forwards the frame only to the correct interface.
A bridge forwards frames for unknown destinations to
the default gateway.
If the destination port is unknown, a bridge will flood the
frame to all ports in the broadcast domain, except for the
source port.
If the destination of the frame is on the same segment as
the source, a bridge will not forward the frame.

What needs to be done when deleting an entire VLAN?
(Choose three.)
Enter database configuration mode.
Reboot the switch in order for the changes to take effect.
Use the negative form of the command that was used to
create the VLAN.
Reassign the switch ports from the deleted VLAN to other
VLANs if they are to be used.
Use the erase vlan command in global configuration mode.
Delete the vlan.dat file from flash.

A network administrator is attempting to configure routing
between VLANs over a trunked link. A trunk link cannot be
established between a switch and a router. Which of the
following are possible sources of this problem? (Choose two.)
The router IOS does not support trunking.
The port is connected and is not receiving alignment and
FCS errors.
The switch duplex and speed are not set properly.
The router and switch are running different versions of STP.
The switch IP address is incorrectly configured.

If two 12-port hubs are connected to a switch that has three
VLANs configured, how many bridging tables will the switch

A network administrator has configured a switch with VLANs.
Hosts will join the VLANs based on their MAC or IP address.
What type of VLANs have been configured on the switch?

A network administrator has configured a switch with three
VLANs: VLAN1, VLAN2, and VLAN3. Port 10 is to be
assigned to VLAN3. Which of the following commands are
needed to assign port 10 to VLAN3? (Choose three.)
Switch_1(config)# switchport interface
fastethernet 0/10
Switch_1(config-if)# switchport mode access
Switch_1(config-if)# switchport access
Switch_1(config-if)# switchport access vlan 3
Switch_1(config)# interface fastethernet 0/10
Switch_1# vlan database

How does the use of VLANs benefit an organization?
(Choose two.)
by centralizing departmental staff and network resources
together in a single physical area
by allowing organizational flexibility by grouping users
together by function instead of physical location
by simplifying the task of adding and moving network
resources and users in a growing organization
by reducing the number of broadcast domains in an
enterprise network
by eliminating the need for routing traffic in large networks
by reducing network management costs by replacing many
Layer 2 devices with a few Layer 3 devices

Which of the following states the 80/20 rule of end-to-end
80% of network resources should be remote and 20%
should be on the local VLAN.
80% of VLANs should be static and the remaining 20%
should be dynamic.
80% of network traffic should be local and 20% remote.
80% of the network sources should be centralized at the
core layer and the remaining 20% at the distribution layer.
80% of traffic should be routed and 20% should be switched.

Which factors influence the number of VLANs that may
be required on a switch? (Choose three.)
the physical addressing scheme
traffic patterns in the network
types of applications in use
the adaptability of the network
workgroup functions and commonality
the tagging option used for VLAN identification

A network administrator has just finished configuring a
switch with multiple VLANs. A workstation on VLAN2
cannot communicate with a workstation on VLAN3.
What needs to be done to correct this problem?
The traffic needs to be routed between the two VLANs.
The hosts must be reconfigured to be on the same logical
The VLANs need to be configured to be on the same
broadcast domain.
The switch must be configured to share VLAN traffic.

Which of the following describe networks in which the use
of static VLANs is appropriate? (Choose three.)
Workstations, departments, and network resources are
seldom moved.
VLAN port membership frequently changes.
Robust VLAN management software is available to the
network administrator.
The overhead required to manage VLAN MAC address and
custom filtering tables is not desirable.
VLANs are often added, deleted, and modified.

VLAN 10 needs to be removed from a switch. Which command
must the administrator enter in order to accomplish this task?
Switch(config-if)# no switchport access vlan 10
Switch(config-if)# erase switchport access vlan 10
Switch(vlan)# no vlan 10
Switch(vlan)# no vlan database 10


Refer to the network shown in the graphic. Host A on
VLAN1 has sent a message requesting the MAC address of
its default gateway. Which of the following network hosts will
process this message?
The message will be seen by the hosts on VLAN1 and
The message will be seen only by the hosts connected
to Switch1.
The message will be seen only by the hosts connected
to VLAN1 on Switch1.
The message will be seen by the hosts connected to
VLAN1 on Switch1 and Switch2.
The message will only be seen by router interface e0.

If a switch connects 12 collision domains and is configured
with three VLANs, how many broadcast domains does it have?

Which of the following commands are used to verify
VLAN configuration? (Choose two.)
Switch# show vlan id id_number
Switch# show vlan
Switch# show config vlan id_number
Switch# show vlan config id_number
Switch# show interface vlan id_number

Which of the following commands will assign switch port
0/9 to VLAN3?
Switch(config-if)# switchport access vlan 3
Switch(config-if)# switchport vlan 3
Switch(config-if)# switchport access 3
Switch(vlan)# switchport 0/9
Switch(vlan)# access switchport 0/9

What does a switch do when it receives a frame and the
address is unknown?
The switch will discard the frame.
The switch will request the sender resend the frame.
The switch will map the source address to the port on
which it was received.
The switch will flood the frame to all attached devices.
The switch will issue an ARP request to confirm that the
source exists.

What is true of the method by which VLAN membership is
identified in Ethernet frames? (Choose two.)
The frame header is in its original format when it reaches
the endpoint device.
The VLAN membership of frames does not need to be
identified unless ISL is in use.
The Ethernet frame is encapsulated or modified with the
VLAN ID information.
The VLAN ID is removed by the endpoint device upon delivery
of the frame.

Which of the following statements are true regarding a root bridge
in a spanning tree topology? (Choose two.)
The root bridge timers control BPDU traffic on the network.
Only the show commands on the switch can display root
bridge information.
It is the central point of a spanning tree topology.
Storm control is enabled by default.
VLANs cannot be trunked between switches until the root
bridge has been elected.

Which of the following are methods of establishing VLAN
membership? (Choose three.)
logical addresses
physical addresses
ISL addresses
switch port attachment
hardware platform
traffic pattern

Switch-A and Switch-B are both configured with ports in the
Marketing, Sales, Accounting, and Admin VLANs. Each VLAN
contains 12 users. How many different subnetworks will be
needed to enable routed connectivity between the VLANs?

What happens to the member ports of a VLAN when the
VLAN is deleted?
They become inactive.
They default back to the management VLAN.
They automatically become a part of VLAN1.
They must be assigned to another VLAN before the original
VLAN can be deleted.
They remain a part of that VLAN until the switch is rebooted.
They then become members of the management VLAN.