ICT Exam Notes
- Used to capture audio, like Joe's voice for his radio show.
Connectivity
- USB is the best choice to reduce latency when connecting an input device.
- Latency effect: Delayed sound.
Streaming
- Streaming: Transferring data in a continuous flow, allowing users to access it without downloading the entire file.
Networks
- To stream outside a LAN, a WAN is needed.
Copyright Legislation
- Affects how listeners can use recordings of the radio show.
RAM
- Joe's computer has 8GiB of RAM.
- Each recording uses 300MiB of RAM.
- Expression: \frac{8 \times 1024}{300} (number of recordings that can be stored in RAM at once).
- Benefit of increasing RAM: Allows more recordings to be stored simultaneously.
- Benefits of using storage over RAM: persistent storage and larger capacity.
- 'A' in RAM stands for Access.
- RAM and ROM are called 'Random' because any memory location can be accessed directly.
Processor Speed
Laptop Expansion
- Feature providing expansion: USB port, PCIe slots etc.
- Risk when subscribing: Exposure of personal information.
- Method: Strong, unique passwords.
- Compliance with data protection laws.
Relevant Content
- Online service can offer the most relevant content to users by tracking browsing activity, purchase histories, and user preferences to suggest items.
Online Communities
- Reason not to upload videos when streaming: Video consumes a lot of bandwidth and resources, potentially causing buffering or lag for viewers.
- Best choice of online community: Social network.
- Threat to safety: Cyberbullying, harassment.
- Moderators can improve safety by: Monitoring content, removing offensive posts, and banning users who violate community guidelines.
- Purpose of acceptable use policy: To outline rules and guidelines for appropriate behavior within the community.
Social Networks
- Key feature creating communities: Groups, shared interests.
- Negatively affects fitness of online information: Bias.
- Methods to check reliability: Cross-reference information with other sources, check the author's credentials.
- Avoid plagiarism by: Paraphrasing.
- Features improving reach: Sharing buttons, viral content.
Online Safety
- Improve safety by: Sharing less information.
Internet
- ISP purpose: Provides internet access.
- Additional network components: Router, modem.
- Web browser role: To interpret and display content from the internet.
- IP Address use: To identify a device on a network.
MAC Address
- Benefit over IP address: Provides unique identification at the hardware level, enhancing security.
Wireless Connectivity
- Types for laptop to smartphone: Bluetooth, Wi-Fi.
- Reason to use WAN: To reach a wide audience over a large geographic area.
GPS
- True statement about GPS: The GPS system does not receive data from Joe’s devices.
- Reason to use GPS: To include location data in image files.
Client-Server Network
- Server role: To provide resources or services to clients.
- Benefit over peer-to-peer: Centralized management and security.
- VPN Benefit: Secures connection to radio station’s network.
Internet Connection
- Method to keep laptop online: Using smartphone as a hotspot.
- Download speed impact: Slow upload can limit audience participation.
Audio Recording
- Minimum data for uncompressed audio: Mebibyte.
Operating System Function
- Function: Audio input/output management.
- Open-source audio recording software benefit: Free or low cost of ownership.
Software Updates
- Reasons to update: Security patches, new features.
- Considerations: Portability, capacity, compatibility, durability.
Digital Divide Causes
- Lack of access to technology and the internet.
Negative Social Impacts of Limited Internet
- Limited access to education and information.
Negative Environmental Impacts
- Increased energy consumption from data centers.
- Broadcast information is typically more regulated than online content.