IT Grade 12 | Exploring Online Applications and Technologies

What are the main components of web application architecture?

• Client-side, Server-side, Database, Network

• Frontend, Backend, Middleware, API

• User Interface, Application Logic, Data Storage, Protocol

• Presentation Layer, Business Logic, Data Access, Security

Answer explanation

The main components of web application architecture include Client-side (frontend), Server-side (backend), Database for data storage, and Network for communication. This choice accurately captures the essential layers of a web application.

How does a client-server model function in web applications?

• The server sends requests to multiple clients simultaneously

• The client-server model functions by having clients send requests to a server, which processes the requests and returns responses.

• Clients and servers communicate through a peer-to-peer network

• Clients directly access the database without a server

Answer explanation

The correct choice explains that in a client-server model, clients send requests to a server, which processes these requests and returns responses, establishing a clear communication flow essential for web applications.

What is the role of APIs in web applications?

• APIs are only relevant for mobile applications, not web applications.

• APIs are used solely for data storage in web applications.

• APIs serve as intermediaries that allow different software systems to communicate and share data in web applications.

• APIs eliminate the need for any backend services in web applications.

Answer explanation

APIs are crucial in web applications as they act as intermediaries, enabling different software systems to communicate and share data effectively. This is essential for integrating services and enhancing functionality.

What are some effective search engine optimization techniques?

• Paid advertising

• Email campaigns

• Social media marketing

• Keyword research, on-page optimization, quality content, link building, technical SEO

Answer explanation

The correct choice includes essential SEO techniques: keyword research helps identify search terms, on-page optimization improves site structure, quality content engages users, link building enhances authority, and technical SEO ensures site performance.

How can keywords impact search engine rankings?

• Keywords have no effect on search engine rankings.

• Keywords impact search engine rankings by helping search engines understand content relevance and user intent.

• Keywords are irrelevant to user searches.

• Keywords only affect social media visibility.

Answer explanation

Keywords are crucial for search engine rankings as they help search engines determine the relevance of content to user queries, aligning with user intent and improving visibility in search results.

What is the significance of backlinks in SEO?

• Backlinks decrease website authority.

• Backlinks only affect social media presence.

• Backlinks improve search engine rankings and drive referral traffic.

• Backlinks are irrelevant to SEO.

Answer explanation

Backlinks are crucial for SEO as they enhance a website's authority, leading to improved search engine rankings. They also drive referral traffic, making them essential for increasing visibility and attracting visitors.

What are the latest trends in cloud computing?

• Latest trends in cloud computing include multi-cloud strategies, edge computing, serverless architectures, enhanced security, and AI/ML integration.

• Increased reliance on physical servers

• Focus on traditional data centers

• Decreased use of artificial intelligence

Answer explanation

The correct choice highlights current trends in cloud computing, such as multi-cloud strategies and AI integration, which are gaining traction. The other options focus on outdated practices that do not reflect the latest developments.

How does cloud computing enhance scalability for businesses?

• Cloud computing enhances scalability by providing on-demand resource allocation and flexible service models.

• Cloud computing requires businesses to invest in physical servers.

• Cloud computing reduces the need for internet connectivity.

• Cloud computing limits resource allocation to fixed amounts.

Answer explanation

Cloud computing enhances scalability by allowing businesses to allocate resources on-demand and utilize flexible service models, enabling them to easily adjust to changing needs without the constraints of physical infrastructure.

What are some emerging technologies in artificial intelligence?

• Natural language processing, computer vision, reinforcement learning, generative adversarial networks (GANs), explainable AI

• Quantum computing

• Blockchain technology

• 3D printing

Answer explanation

The correct answer lists key emerging AI technologies, including natural language processing and GANs, which are pivotal in advancing AI capabilities. Quantum computing and blockchain are not specific to AI.

How is AI transforming IT operations?

• AI is transforming IT operations by automating tasks, enhancing decision-making, improving incident response, and enabling predictive maintenance.

• AI is slowing down IT operations by increasing manual tasks.

• AI has no impact on decision-making in IT.

• AI is only used for data storage in IT operations.

Answer explanation

AI is revolutionizing IT operations by automating repetitive tasks, enhancing decision-making through data analysis, improving incident response times, and enabling predictive maintenance, making processes more efficient.