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CCNA 3 Chapter 1 Answer

LAN Switching and Wireless

1. 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?
access layer
core layer
data-link layer
distribution layer
network layer
physical layer

2. Which two characteristics are associated with enterprise level switches? (Choose two.)
low port density
high forwarding rate
high latency level
support link aggregation
predefined number of ports

3. Which feature supports higher throughput in switched networks by combining multiple switch ports?
convergence
redundant links
link aggregation
network diameter

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