Find Interview Questions for Soti

Right Answer:
Agile is an iterative and incremental approach to project management that focuses on collaboration, flexibility, and customer satisfaction. Unlike traditional, sequential (waterfall) methods, Agile embraces change throughout the project lifecycle through short development cycles called sprints.

Right Answer:
Cross-functional teams in Agile are important because they bring together all the necessary skills to complete work without dependencies on other teams. This leads to faster delivery, better problem-solving, and increased innovation. To foster collaboration, encourage open communication, shared understanding of goals, mutual respect, and a focus on collective ownership.

Right Answer:
Kanban focuses on visualizing workflow, limiting work in progress (WIP), and continuous flow. Scrum uses time-boxed iterations (sprints) with specific roles (Scrum Master, Product Owner, Development Team) and events (sprint planning, daily scrum, sprint review, sprint retrospective).

Use Kanban when you need continuous delivery, have evolving priorities, and want to improve workflow incrementally. Use Scrum when you need structured development with fixed-length iterations, have clear goals for each iteration, and benefit from team collaboration with defined roles.

Right Answer:
We prioritize features or tasks in an Agile sprint using a combination of factors like business value, risk, effort/size, dependencies, and urgency. Product Owner usually leads this, using techniques like MoSCoW (Must have, Should have, Could have, Won't have) or story pointing, to ensure the most valuable items are tackled first.

Right Answer:
Agile ceremonies are recurring meetings within a sprint to facilitate communication, planning, and continuous improvement.

* **Sprint Planning:** The team decides what work to complete in the upcoming sprint. They discuss user stories, estimate effort, and define the sprint goal.

* **Daily Stand-up:** A brief daily meeting where the team shares progress, identifies roadblocks, and coordinates efforts. Each member typically answers: What did I do yesterday? What will I do today? Are there any impediments?

* **Sprint Review:** The team demonstrates the completed work to stakeholders, gathering feedback and ensuring alignment with expectations.

* **Sprint Retrospective:** The team reflects on the past sprint, identifying what went well, what could be improved, and defining action items to enhance future performance.

Right Answer:
CORS, or Cross-Origin Resource Sharing, is a security feature implemented by web browsers that allows or restricts web applications from making requests to a domain different from the one that served the web page. It affects API development by requiring developers to configure their APIs to specify which origins are allowed to access their resources, ensuring that only trusted domains can interact with the API.

Right Answer:
The different types of APIs are:

1. **Open APIs (Public APIs)** - Available to developers and third parties.
2. **Internal APIs (Private APIs)** - Used within an organization.
3. **Partner APIs** - Shared with specific business partners.
4. **Composite APIs** - Combine multiple endpoints into a single call.
5. **Web APIs** - Accessible over the internet using HTTP/HTTPS.

Right Answer:
Rate limiting in APIs is a technique used to control the number of requests a user can make to an API within a specific time period. It is implemented by setting thresholds (e.g., requests per minute) and using mechanisms like tokens, counters, or IP address tracking to monitor and restrict access when the limit is exceeded.

Right Answer:
An API endpoint is a specific URL or URI where an API can be accessed by a client to perform operations like retrieving or sending data. It defines the location and method (such as GET, POST) for interacting with the API.

Right Answer:
API authentication is the process of verifying the identity of a user or application trying to access an API. Common methods include:

1. **API Keys**: Unique keys provided to users to access the API.
2. **Basic Authentication**: Uses a username and password encoded in Base64.
3. **OAuth**: A token-based authentication method that allows users to grant limited access to their resources without sharing credentials.
4. **JWT (JSON Web Tokens)**: A compact, URL-safe means of representing claims to be transferred between two parties, often used for stateless authentication.
5. **HMAC (Hash-based Message Authentication Code)**: Uses a secret key to create a hash of the request, ensuring data integrity and authenticity.

Right Answer:
The Adapter Pattern is used to allow incompatible interfaces to work together by converting the interface of a class into another interface that clients expect. The Proxy Pattern, on the other hand, provides a surrogate or placeholder for another object to control access to it, often adding additional functionality like lazy loading or access control. In summary, the Adapter changes the interface, while the Proxy controls access to the object.

Right Answer:
To improve cache performance, you can:

1. Use appropriate cache sizes to fit your workload.
2. Implement cache eviction policies like LRU (Least Recently Used) or LFU (Least Frequently Used).
3. Optimize data access patterns to increase cache hits.
4. Use a distributed caching system for scalability.
5. Preload frequently accessed data into the cache.
6. Minimize cache misses by grouping related data together.
7. Monitor and analyze cache performance metrics to identify bottlenecks.

Right Answer:
**Use Case: Auction Model**

**Actors:**
- Seller
- Buyer

**Preconditions:**
- Seller has an item to auction.
- Buyer is registered and logged in.

**Main Flow:**
1. **Seller creates auction:**
- Seller lists the item with details (title, description, starting bid, auction duration).
- System saves auction details and makes it visible to buyers.

2. **Buyer places bid:**
- Buyer views the auction item.
- Buyer places a bid that is higher than the current highest bid.
- System updates the highest bid and notifies other buyers.

3. **Auction ends:**
- System tracks the auction duration.
- When the auction ends, the system identifies the highest bidder.

4. **Transaction completion:**
- System notifies the seller of the winning bid.
- Seller and buyer finalize the transaction (payment and item delivery).

**Postconditions:**

Right Answer:
In architecture, a concept is the underlying idea or theme that guides the design of a building. Yes, concepts are useful as they provide direction and coherence to the design process. Users may not always fully understand the architectural concept, but it can influence their experience and perception of the space. A well-executed concept can enhance user engagement and satisfaction.

Right Answer:
AMD64 is a 64-bit architecture developed by AMD that supports larger amounts of RAM and improved performance for 64-bit applications, while Intel P4 is a 32-bit architecture that primarily supports 32-bit applications and has limitations on memory addressing.

Right Answer:
To invoke a text file in WinRunner, you can use the `fopen` function to open the file and `fgets` or `fread` to read its contents. Here’s a simple example:

```c
file_handle = fopen("path_to_your_file.txt", "r");
if (file_handle != NULL) {
// Read from the file
line = fgets(buffer, sizeof(buffer), file_handle);
// Process the line as needed
fclose(file_handle);
}
```