School ICT Self Study
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Network Technology Practice Tools (Competency 6)

Use the interactive tools below to practice and visualize key networking concepts from your syllabus (Competency 6 focus).

📝 How to Use & Competency Aims

How to Use (Collapsible Navigation)

To keep the page organized and help you focus, each tool section is **collapsible**.

  • Click the **"Expand"** button next to any section title to reveal the tool.
  • Click the **"Collapse"** button to hide the section when you are done.

Syllabus Aims (Competency 6 Breakdown)

Tool 1: Signals (6.1)

Explores signals, properties (Amplitude, Frequency, Phase), and the relationship $v = f\lambda$.

Tool 2: Encoding (6.3)

Investigates how digital data is encoded using signal elements (NRZ, Manchester).

Tool 3 & 7: IPv4 (6.7)

Practices subnetting: calculating Network Address, Broadcast Address, Mask, and Host Range using CIDR notation.

Tool 4: Topology (6.5)

Recognizes and compares common topologies (Bus, Star, Ring, Mesh).

Tool 5 & 8: Protocols (6.8, 6.9, 6.11)

Identifies key application protocols (ports, use) and explores basic security concepts (Encryption, Threats).

Tool 6: Models (6.10)

Differentiates layers and PDUs (Packet, Frame, Bit) of the TCP/IP and OSI models.

Tool 9: Media (6.2)

Compares guided (Copper, Fiber) and unguided (Wireless) media properties (Bandwidth, Latency, Attenuation).

1. Signal Property Visualizer (6.1)

Aim: To understand the characteristics and physical relationships between signal properties (amplitude, frequency, wavelength, and period).

Adjust the properties of the signal and see how the wave changes. Enter a propagation speed (v) to calculate the wavelength (λ).

Wavelength (λ): - meters ($v = f\lambda$)

Period (T): - seconds ($T = 1/f$)

2. Digital Data Encoder (6.3)

Aim: To visualize how digital data (binary) is physically represented using different encoding schemes like NRZ and Manchester.

Enter a binary string (e.g., 1101001) or a character (e.g., 'A') to see its encoding. For characters, the ASCII code is used.

Binary Representation:

Total Bits (Bit Rate): 0 bits

Unipolar NRZ Encoding

Baud Rate (NRZ): Equivalent to Bit Rate (Bit per symbol rate is 1)

Manchester Encoding

Baud Rate (Manchester): Twice the Bit Rate (Bit per symbol rate is 0.5)

3. IPv4 Subnet Calculator (6.7)

Aim: To practice calculating the subnet mask, network address, broadcast address, and host range using CIDR notation.

Enter an IP address and a subnet mask in CIDR notation to calculate network details.

Subnet Mask (Decimal): -

Subnet Mask (Binary): -

Max Hosts: -

Network Address: -

Usable Host Range: -

Broadcast Address: -

4. Network Topology Viewer (6.5)

Aim: To recognize and compare the structure, advantages, and disadvantages of common network topologies (Bus, Star, Ring, Mesh).

Visualize the different physical and logical topologies used in computer networks.

Description: Select a topology to see its diagram and description.

Common Uses: -

Advantages: -

Disadvantages: -

5. Transmission Media Characteristics (6.2)

Aim: To compare guided (Wired) and unguided (Wireless) media based on performance characteristics.

Compare the impact of different media types on signal transmission.

Category: -

Typical Bandwidth: -

Latency (Delay): -

Attenuation: -

Noise/Interference: -

6. Protocol Analyzer (6.8, 6.9)

Aim: To identify the purpose, port numbers, and communication types of key Internet application and transport protocols (TCP/UDP).

Explore common protocols and their port numbers. Understand client-server communication.

Protocol Name: -

Default Port: -

Description: -

Common Use: -

Communication Type: -

7. TCP/IP & OSI Model PDU Viewer (6.10)

Aim: To differentiate between the layers of the TCP/IP and OSI models and identify the PDU (data unit) and function of each layer.

Select a layer from either model to see the name of its Protocol Data Unit (PDU).

Protocol Data Unit (PDU): -

Layer Function: -

8. Transport & Security Concepts (6.8, 6.11)

Aim: To compare TCP/UDP properties and investigate basic network security concepts.

Explore the functionality of key transport protocols and security mechanisms.

Primary Function: -

Key Property: -

Related Concept/Example: -

9. Network Configuration Practice (6.7)

Aim: To apply knowledge of subnetting to calculate network boundaries and assign valid host IP addresses for network devices.

Practice calculating and assigning IP addresses, Subnet Masks, Network IDs, and Broadcast addresses for a given scenario.

Click "Generate Practice Scenario" to start