CCNA3 Chapter 1 Practice Test Answers
At which layer of the hierarchical network design would you find switches that
use access control lists to implement security?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would you find switches that
use port-based security to control which devices connect to the network?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would you find switches that
do not implement security measures, but switch packets as fast as possible?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would it be useful to have
switches that implement PoE?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would it be useful to have
switches that implement QoS?




SW
Core
Distribution
Access
All 3 layers
23/10/2007
D:\106740385.doc
1
At which layer of the hierarchical network design is it least important to have a
switch whose forwarding rate equals the combined wire speed of all the ports?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would it be useful to have
switches that implement link aggregation?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design are you least likely to find
redundancy?




Core
Distribution
Access
All 3 layers
At which layer of the hierarchical network design would a server in a data
centre connect to the network?



Core
Distribution
Access
At which layer of the hierarchical network design are you most likely to find
switches that do not have OSI layer 3 features?



Core
Distribution
Access
What is the reason for not having redundancy at every layer?




Efficiency
Availability
Scalability
Cost
What is link aggregation?
SW
23/10/2007
D:\106740385.doc
2




Load balancing across different routes that have the same number of
hops
Two or more links acting as a single virtual link with the combined
bandwidth
Sending alternate packets on different links
Using a single physical interface with subinterfaces to connect to
different devices
What is another name for the core layer of the network?




Vertical cabling
Horizontal cabling
High-speed backbone
WAN link
Which of these processes is an OSI layer 3 process carried out by distribution
layer switches?




Routing between VLANs
Switching using MAC addresses
Link aggregation
Provision of PoE
Which feature of network switches is particularly important in a converged
network?




Port security
Quality of service
Link aggregation
Modularity
How might a company save money by having a converged network in their
new premises rather than having separate data, phone and video networks?




Networking devices designed for converged networks are cheaper
They need only one set of network cables installed instead of
three
They can re-use all their old PCs, phones and videoconferencing
equipment
Management is easier, so they can employ staff with fewer
qualifications
Which type of switch has a chassis into which line cards can be installed?




SW
Stackable switch
Fixed configuration switch
Multilayer switch
Modular switch
23/10/2007
D:\106740385.doc
3
What is a characteristic of a fixed configuration switch?




You cannot alter the number of ports
You cannot alter how it is connected to other switches
It has a fixed size of one rack unit
It has line cards fixed into its chassis
Which is a desirable characteristic of an access layer switch allocated to a
department where there are a large number of computer users?




Multilayer capabilities
High port density
High latency
Ability to route between VLANs
What is special about stackable switches?




They can be fitted easily into a switch cabinet
They can be connected through special ports and act as a single
switch
They have a modular construction so that they can have extra ports if
required
They have a strengthened case that is able to take extra weight
The Catalyst Express 500 switch is the cheapest switch in the Catalyst range.
This is a fixed configuration switch with up to 24 10/100 ports and optional
PoE. It offers forwarding rates from 8.8 Gb/s to 24 Gb/s, web-based
management, and converged data/IP communications support. Where would
it best be used?




For home use to allow 3 PCs to share access to a broadband router.
The only switch in the network of a small company with 10-15
employees.
One of a group of access layer switches providing connectivity for a
single department within a larger company.
As a distribution layer switch in a small to medium sized company.
Which features of switches at the core layer promote availability and
reliability? (Choose 2)




SW
Redundancy
Hot-swappable hardware components
Modularity
PoE
23/10/2007
D:\106740385.doc
4
The network manager analyses the use that the HR department makes of the
network: how many workstations they have, what applications they use, which
servers they use, how much bandwidth they use. What type of analysis is
this?




SW
Traffic Flow Analysis
User Communities Analysis
Data Store and Servers Analysis
Local Department Analysis
23/10/2007
D:\106740385.doc
5