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Chapter 6
Virtual LANs (VLANs)
Answers to Review Questions
1.
D. Switches do not propagate VLAN information by default; you
must configure the VTP domain. VLAN Trunk Protocol (VTP) is used
to propagate VLAN information across a trunked link.
2.
B. Inter-VLAN communication must take place with a router or
layer-3 switch.
3.
B, C. Frame tagging is used to keep track of frames as they traverse
a switched fabric.
4.
D. A VMPS server must be configured with the hardware addresses
of all hosts on the internetworks.
5.
C, D. VTP is not right because it has nothing to do with trunking,
except that it sends VLAN information across a trunked link. Trunk
protocol and ISL are used to configure trunking on a port.
6.
C. The Cisco proprietary frame-tagging method is Inter-Switch Link
(ISL) routing.
7.
C. Virtual LANs break up broadcast domains in layer-2 switched
internetworks.
8.
A. The transparent switch is a stand-alone switch that can be
connected to your network for management. It does not add VLAN
information to its VLAN database, nor does it share its configured
VLAN information. It will pass VLAN-received trunked ports out a
different trunked port if configured.
9.
C. Virtual LANs were created so that broadcast domains can be
broken up in a layer-2 switched internetwork.
10.
A. All Cisco switches are VTP servers by default. No other VTP
information is configured on a Cisco switch by default.
11.
D. By default, if you create a trunked link, all VLANs are allowed on
that trunked link. You must delete any unwanted VLANs by hand.
12.
A, B, C, D, F, G. Virtual LANs create security, flexibility, and ease
of management as well as create smaller broadcast domains. You still
need to run cables to connect users to the network.
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