Network Speed

Network Speed

Bandwidth and Latency

Multiple Select

In this lesson I am going to learn to ... ?

• Define 'bandwidth' anhd 'latency'

• Explain how they affect network performance

• Use bits per second to describe network speed

• Construct arithmetic expressions describing network transmissions

Multiple Choice

What will you NOT learn to do in this lesson?

• Define ‘bandwidth’ and ‘latency’

• Use bits per second to describe network speed

• Construct expressions to calculate transmission times

• Compare LANs and WLANs

Open Ended

How fast is your network?

Go to: https://www.speedtest.net/ and run a speed test.

Make a note of your DOWNLOAD and UPLOAD speeds (in Mbps)

Multiple Select

Which two factors can affect the speed of a network connection?

• bandwidth

• latency

• clock speed

• RAM size

• OS version

Multiple Choice

Data transmission speeds on networks are measured in ........

• bits per second

• bytes per second

• Hertz

• Kilobytes per second

Multiple Choice

Network transmission speed is usually measured in ....

• Mbps

• bps

• Gbps

• Kbps

Multiple Choice

What does a network speed of 100 Mbps mean?

• 100 million bits per second

• 100 million bytes per second

• 100 thousand bits per second

• 100 baud per second

Multiple Choice

Which one shows the correct units of storage in increasing order of size?

• bit, byte, Kibibyte, Mebibyte

• bit, byte, nibble, Kibibyte

• bit, byte, Kibibyte, nibble

• Kibibyte, byte, nibble, bit

Multiple Choice

Which answer shows the correct units of storage in decreasing order of size?

• Kib, Mib, Tib, Gib

• Kib, Mib, Gib, Tib

• Tib, Gib, Mib, Kib

• Mib, Gib, Tib, Kib

Multiple Choice

Which one shows the correct method to calculate the transmission time for a file?

• file size in bits / network speed in bps

• file size in bytes / network speed in bps

• network speed in bps / file size in bits

• file size in bits * network speed in bps

Multiple Choice

Convert 5 GiB to bits?

• 5 x 8 x 1024 x 1024 x 1024

• 5 x 8 x 1024 x 1024

• 5 x 1024 x 1024 x 1024

Multiple Choice

Convert 100 Mbps to bits per second?

• 100 x 1000 x 1000

• 100 x 1000

• 100 x 8 x 1000 x 1000

Multiple Choice

How many seconds will it take to download a 100 MiB file over a 100 Mbps connection?

• (100 * 1024 * 1024 * 8) / (10 * 1000 * 1000)

• (100 * 1000 * 1000 * 8) / (10 * 1000 * 1000)

• (100 * 1024 * 8) / (10 * 1000)

• (100 * 1024 * 1024) / (10 * 1024 * 1024)

Multiple Choice

What is the file size in bytes of a file that takes 10 secs. to transfer over a 50 Mbps connection?

• 10 * 50 * 1000 * 1000 * 8

• (10 * 50 * 1024 * 10024 / 8

• (10 * 50 * 1000 * 1000) / 8

• 10 * 50 * 1000 * 1000

Multiple Select

In this lesson I have learned to ...

• Define 'bandwidth' and 'latency'

• Explain how they affect network performance

• Use bps to describe network speed

• Construct expressions to describe transmission times

Open Ended

Thinking Hard

Write your own exam question based on today's lesson. Provide an answer.

(press Shift+Enter to take a new line ...)

Poll

How much of this lesson have you understood?

• None of it

• Some of it

• Most of it

• All of it