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CCNA 3- CH. 1 LAN Design
LAN Switching and Wireless, CCNA 3, Chapter 1- LAN Design
20
Computer Networking
Undergraduate 1
01/15/2013

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Cards

Term
Which layer of the OSI model does an access layer LAN switch use to make a forwarding decision?
Definition
Layer 2
Term
Which three features are commonly supported at the distribution layer of the Cisco hierarchical network model? (Choose three.)
Definition
security policies

quality of service

Layer 3 functionality
Term
A technician is attempting to explain Cisco StackWise technology to a client that is setting up three stackable switches. Which explanation accurately describes StackWise technology?
Definition
StackWise technology allows up to nine switches to be interconnected via the use of a fully redundant backplane.
Term
A network technician is asked to examine an existing switched network. Following this examination, the technician makes recommendations for adding new switches where needed and replacing existing equipment that hampers performance. The technician is given a budget and asked to proceed. Which two pieces of information would be helpful in determining necessary port density for new switches? (Choose two.)
Definition
traffic flow analysis

expected future growth
Term
Refer to the exhibit. Beginning with HR servers and workstations, a network engineer is designing a new security structure for the network. Which set of policies adheres to the hierarchical network model design principles?
Definition
Configure port security options on S1. Use Layer 3 access control features on D1 and D2 to limit access to the HR servers to just the HR subnet.
Term
Refer to the exhibit. Beginning with HR servers and workstations, a network engineer is designing a new security structure for the network. Which set of policies adheres to the hierarchical network model design principles?
Definition
Configure port security options on S1. Use Layer 3 access control features on D1 and D2 to limit access to the HR servers to just the HR subnet.
Term
For organizations that are implementing a voice over IP solution, what functionality should be enabled at all three layers of the hierarchical network?
Definition
quality of service
Term
At which heirarchical layer are switches normally not required to process all ports at wire speed?
Definition
access layer
Term
Which hierarchical design characteristic would be recommended at both the core and distribution layers to protect the network in the case of a route failure?
Definition
redundancy
Term
A network administrator is selecting a switch that will operate at the network core. Which three features should the switch support for optimum network performance and reliability? (Choose three.)
Definition
10 Gigabit Ethernet

quality of service (QoS)

hot-swappable hardware
Term
Which two features are supported at all three levels of the Cisco three-layer hierarchical model? (Choose two.)
Definition
Quality of Service

Link Aggregation
Term
Which two characteristics are associated with enterprise level switches? (Choose two.)
Definition
high forwarding rate

support link aggregation
Term
Configuring communication between devices on different VLANs requires the use of which layer of the OSI model?
Definition
Layer 3
Term
Which feature supports higher throughput in switched networks by combining multiple switch ports?
Definition
link aggregation
Term
What statement best describes a modular switch?
Definition
flexible characteristics
Term
Link aggregation should be implemented at which layer of the hierarchical network?
Definition
access, distribution, and core
Term
What is the likely impact of moving a conventional company architecture to a completely converged network?
Definition
A shared infrastructure is created resulting in a single network to manage.
Term
Which hierarchical design model layer controls the flow of network traffic using policies and delineates broadcast domains by performing routing functions between virtual LANs (VLANs)?
Definition
distribution
Term
Which layer of the hierarchical design model provides a means of connecting devices to the network and controlling which devices are allowed to communicate on the network?
Definition
access
Term
Which layer of the hierarchical network design model is refered to as the high-speed backbone of the internetwork, where high availability and redundancy are critical?
Definition
core layer
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