100-105 Free Dumps Study Materials
Question 13: How does a switch differ from a hub?
A. A switch operates at a lower, more efficient layer of the OSI model.
B. A switch decreases the number of broadcast domains.
C. A switch does not induce any latency into the frame transfer time.
D. A switch decreases the number of collision domains.
E. A switch tracks MAC addresses of directly-connected devices.
Correct Answer: E
Explanation:
Some of the features and functions of a switch include:
A switch is essentially a fast, multi-port bridge, which can contain dozens of ports. Rather than
creating two collision domains, each port creates its own collision domain. In a network of twenty
nodes, twenty collision domains exist if each node is plugged into its own switch port. If an uplink
port is included, one switch creates twenty-one single-node collision domains. A switch dynamically
builds and maintains a Content-Addressable Memory (CAM) table, holding all of the necessary MAC
information for each port. For a detailed description of how switches operate, and their key
differences to hubs, see the reference link below.
http://www.cisco.com/warp/public/473/lan-switch-cisco.shtml
