Defragmentation involves reorganizing the data on a disk to consolidate fragmented files, reducing access time and improving overall system performance.

Binary Search Trees (BSTs) and AVL trees are both binary search tree structures used in storing and retrieving data efficiently. However, AVL trees differ in that they are self-balancing, ensuring that the height difference between subtrees (balance factor) is limited to maintain logarithmic time complexity for operations like search, insertions, and deletions. In contrast, while BSTs have an average time complexity of O(log n) for search operations, they do not inherently guarantee a balanced structure, potentially leading to worst-case scenarios of O(n) complexity if the tree becomes skewed. AVL trees, due to their stricter balancing criteria, offer more predictable and consistent performance but may require additional overhead in maintaining balance during insertions and deletions compared to BSTs. Understanding the differences between these tree structures is essential for designing efficient data storage and retrieval systems.

Incremental Development is a key Agile practice where work is divided into small, manageable parts called increments. These increments are completed iteratively, allowing for continuous feedback and improvement throughout the development process.

SMTP (Simple Mail Transfer Protocol) is primarily used for sending emails from a client to a server or between servers. It handles the process of sending the message and ensures it reaches the recipient's email server. While email clients can also receive emails using protocols like POP3 or IMAP, SMTP's main function is sending.

In HTML, inline and block-level elements behave differently in terms of layout and positioning. Inline elements, such as or , do not start on a new line and only occupy as much width as necessary for their content. They allow other elements to sit beside them on the same line. Block-level elements, such as

or

, start on a new line and expand to fill the entire width available within their parent container. They create distinct blocks of content that stack vertically. Understanding these differences is important for structuring HTML documents and controlling the layout and flow of elements on a web page.