Y2 2.2 Plenary quiz

A 1TB file takes exactly 13minutes and 20seconds to transfer.

Calculate the data transfer rate in Gbps.

Only enter the number in your answer.

Answer explanation

1TB = 1000,000,000,000 * 8

=8000,000,000,000 bits

13minutes 20 seconds = 800 seconds.

8000,000,000,000/800 = 10,000,000,000bps

which is the equivalent of 10Gbps.

A _______ _____ stores the different paths along which data can be sent. It records the last node before the destination.

Enter only the 2 words to fill the blanks.

Answer explanation

Routing involves routers being intelligent enough to forward data down the most appropriate path.

This helps to send a packet to a destination a quickly as possible.

A Routing table helps to achieve this as it stores the different paths along which data can be sent.

The router will also have knowledge of other routers, switches, bridges, firewalls and gateways.

To convert 40gigbyes to gigabits you should:

• Multiply by 100,00.

• Multiply by 100,00 then multiply by 8

• Multiply by 8.

• Multiply by 1000.

Answer explanation

There are 8 bits in one byte.

Therefore to convert a number from Bytes to bits you should multiply by 8.

40GB * 8 = 320Gbits

What are the 2 ways that you can describe the internet?

• A network of networks

• A lot of connected computers.

• A world wide communications infrastructure.

• A lot of information that you can access from anywhere!

Answer explanation

Eduqas allow only 2 correct definitions of the internet:

A network of networks

A world wide communications infrastructure.

How confident do you feel about calculating transmission speeds?

• Not confident

• quite confident

• confident

• very confident

Answer explanation

If you are not feeling confident about transmission speeds what can you do?

Actively review the Power Point, doing the calculations for each of the questions.

Complete the questions again without the answers.

Complete the exam questions.

Still unsure? Ask for help!

How confident do you feel calculating the lowest cost routes on a network

• not confident

• quite confident

• confident

• very confident

Answer explanation

If you are not feeling confident about calculating lowest cost routes on a network what can you do?

Actively review the Power Point, filling in the tables for each of the questions.

Complete the questions again without the answers.

Complete the exam questions.

If you are still unsure - ask for help!