Networks Workbook.

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Networks Workbook

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

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

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

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

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

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

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

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:

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

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

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.

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

Parity Checking Add an even and an odd parity bit to each of these numbers. Data being transmitted Even parity Odd parity 1011010 0110111 1100000 0101111

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