WatchMore Inc - NSC Information Technology - Question 6 - 2023 - Paper 2

1. Copyright protections regarding the content accessed by the user.
2. Restrictions on the number of installations/devices allowed under a single license.

Geo-blocking works by identifying a user's IP address to determine their geographical location. When a user in a restricted area tries to access content not available in their country, the service denies access by blocking the IP address or redirecting to a local version of the site.

1. Sit straight with your back perpendicular to the ground to maintain good posture.
2. Use ergonomic furniture, such as a chair that supports the lower back, to reduce strain during long sitting periods.

VOD content is streamed rather than downloaded to allow users immediate access without consuming local storage space. Streaming also enables content to be viewed live or on-demand, providing a more flexible viewing experience.

Lossy compression will typically be used for VOD content as it reduces file size by removing some data, which may not significantly affect viewing quality.

Lossy compression is suitable for VOD content because it minimizes bandwidth usage while maintaining acceptable quality for streaming, which is crucial for performance in varying internet conditions.

Users can look for a padlock icon in the browser's address bar or the URL starting with 'https://' to ensure a secure connection.

Encryption is essential for online payments as it protects sensitive information, such as credit card details, from being intercepted by malicious actors during transmission.

1. Establish a secure connection between client and server through the SSL handshake, where encryption methods are negotiated.
2. Client and server exchange encryption keys to create a secure session.
3. All transmitted data during the session is encrypted, ensuring it remains confidential.

Phishing is a common technique where cyber criminals send fraudulent messages that appear legitimate to trick users into providing sensitive information, such as banking details.

Scalability in this context refers to the ability of the VOD service to accommodate an increasing number of users without degrading performance, by either adding resources or optimizing existing ones.

1. Load balancing can be applied by distributing incoming user requests across multiple servers, ensuring no single server becomes a bottleneck.
2. Resource pooling can be used where multiple servers are combined to act as a single virtual server, allowing dynamic allocation of resources based on demand.

I recommend using replication/duplication because it ensures high availability and reliability by having a complete copy of the database at different locations, which can quickly be accessed if one server fails.

Regular synchronization processes should be implemented to ensure that updates made in one part of the distributed database are propagated to all other nodes in real-time or at scheduled intervals.

Artificial Intelligence (AI) refers to the simulation of human intelligence processes by machines, particularly computer systems, enabling them to perform tasks that typically require human intelligence.

One advantage of using a chatbot is that it can facilitate seamless communication and provide instant responses to user enquiries, improving customer satisfaction.

1. A real person can handle a wider variety of questions and provide nuanced responses that may be emotional or complex.
2. Human agents can build a deeper rapport with users, addressing concerns efficiently and empathetically.

1. Analyzing the data to identify user preferences, which helps in tailoring the VOD content to suit different demographics.
2. Cleaning the data by removing outdated and irrelevant information to ensure accurate analytics.

1. Data storage limitations due to the massive volume of information that needs to be stored and processed.
2. Increased complexity in managing and analyzing diverse data types from various sources.

While tailoring content can enhance user experience, it may lead to privacy concerns as users' data is continuously collected and analyzed. It can also result in users receiving biased recommendations, limiting their exposure to diverse content.