How does a switch differ from a hub?
A.
A switch does not induce any latency into the frame transfer time.
B.
A switch tracks MAC addresses of directly-connected devices.
C.
A switch operates at a lower, more efficient layer of the OSI model.
D.
A switch decreases the number of broadcast domains.
E.
A switch decreases the number of collision domains.
Explanation:
Explanation/Reference:
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.r
http://www.cisco.com/warp/public/473/lan-switch-cisco.shtml
Latency is the amount of time a message takes to traverse a system. In a computer network, it is an expression of how much time it takes for a packet of data to get from one designated point to another. It is sometimes measured as the time required for a packet to be returned to its sender.