1. Networks Workbook

2. What is a computer network?
Create a list of the activities computer networks make possible.
Activities

3. Identify the network type from the description.
Types of Network
Identify the network type from the description.
Type of Network
Description
Example
Connect computers over a large area such as a town, city or country.
The internet (a global computer network)
Connect computers over a building or a site.
School network
Connect computers or devices used by one person.
Bluetooth headset connected to a mobile phone

4. Bus Topology Advantages: Bus topology diagram Disadvantages:
Describe the bus topology
Bus topology diagram
Advantages:
Disadvantages:

5. Ring Topology Advantages: Ring topology diagram Disadvantages:
Describe the bus topology
Ring topology diagram
Advantages:
Disadvantages:

6. Star Topology Advantages: Star topology diagram Disadvantages:
Describe the bus topology
Star topology diagram
Advantages:
Disadvantages:

7. Mesh Topology Advantages: Mesh topology diagram Disadvantages:
Describe the bus topology
Mesh topology diagram
Advantages:
Disadvantages:

8. Use internet research to complete the table below:
Network Media
Use internet research to complete the table below:
Type
Range
Transmission Speed
Security (Good, Medium, Poor)
Copper Cable
Fibre Optic Cable
Wireless

9. Transmission Speed Data transmission speeds are measured in:
Data storage is measured in:
The formula used to calculate how long it will take to transfer a file:

10. Calculate the transmission times for the following scenarios:
Answer (including working)
File Size: 2 KB Speed: 5 Mbps
File Size: 3 KB Speed: 1 Mbps
File Size: 10 KB Speed: 2 Mbps

11. Calculate the transmission times for the following scenarios:
Answer (including working)
File Size: 1 KB Speed: 10 Mbps
File Size: 1 MB Speed: 4 Mbps
File Size: 8 KB Speed: 1 Gbps

12. Identify the keyword from the description.
Error Detection
Identify the keyword from the description.
Keyword
Description
A checksum is an algorithm used to check for errors in data transmission. It works by calculating a numerical value based on the number of bits in a packed of data. This value is attached to the packet.
When the packet reaches its destination, the same checksum algorithm is applied to the data. If the two checksums don’t match it shows that an error has occurred and the receiving computer asks the sending computer to re-send that package.

13. Parity Checking What is parity checking? What is even parity?
What is odd parity

14. Parity Checking
Add an even and an odd parity bit to each of these numbers.
Data being transmitted
Even parity
Odd parity

15. Network Addressing What is a MAC address? What is a hostname?
Give an example of a MAC address