Bandwidth

1. WELCOME
TO
PRESENTATI
ON

2. What is
Bandwidth?
Bandwidth is measured as the
amount of data that can be transferred
from one point to another within a
network in a specific amount of time.
Typically, bandwidth is expressed as a
bitrate and measured in bits per
second (bps).

3. History of Bandwidth
Since 1994, the Internet has
transformed from a niche
technology, serving mainly to
interconnect laboratories engaged
in government research, to a key
part of everyday life. In 1995, 0.68%
of the world's population
reportedly had access to the
Internet. Fast-forward to 2019, and
over half of the globe was
connected.
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4. Why bandwidth
is important
Bandwidth is used to transfer
data fast so you can easily
access your page to view it. The
more bandwidth you have, the
more faster you can download
more things.

5. Commonly
Available
Bandwidth
Your internet service provider is
a company that has very high-
speed connection to the Internet
but very expensive. Your ISP
makes its money by renting
some of that high-speed
connection.

6. Bandwidth vs speed
• The terms bandwidth and speed are often used
interchangeably but not correctly. The cause of the
confusion may be due, in part, to advertisements by
internet service providers (ISPs) that conflate the two by
referring to greater speeds when they truly
mean bandwidth.
• Essentially, speed refers to the rate at which data can be
transmitted, while the definition of bandwidth is the
capacity for that speed. To use the water metaphor
again, speed refers to how quickly water can be pushed
through a pipe.
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7. How to measure bandwidth
While bandwidth is traditionally
expressed in bits per second (bps),
modern network links now have far
greater capacity, which is why
bandwidth is now more often
expressed as Mbps or Gbps.
Bandwidth connections can be
symmetrical, which means the data
capacity is the same in both directions
-- upload and download --
or asymmetrical, which means
download and upload capacity are not
equal. In asymmetrical connections,
upload capacity is typically smaller
than download capacity
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8. Bandwidth Signal
• The bandwidth of a signal is defined as the
difference between the upper and lower
frequencies of a signal generated. As seen
from the above representation, Bandwidth (B)
of the signal is equal to the difference
between the higher or upper-frequency (fH)
and the lower frequency (fL). It is measured in
terms of Hertz(Hz) i.e. the unit of frequency.
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