The correct option is Data Link. The Data Link layer of the OSI Model is responsible for error detection and correction. It ensures that data packets are transmitted without errors over the physical layer by using techniques like checksums and CRCs (Cyclic Redundancy Checks). This layer also handles framing, addressing, and flow control. Physical layer deals with the actual physical transmission of data, Network layer is responsible for logical addressing and routing, and Transport layer manages end-to-end communication.

The primary difference between FAT (File Allocation Table) and NTFS (New Technology File System) lies in their capabilities regarding disk size support. NTFS supports larger disk sizes compared to FAT. This is due to NTFS using a 64-bit file allocation table, enabling it to manage larger volumes more efficiently. Additionally, NTFS offers better security features such as file and folder permissions, encryption, and disk quotas, which are not as robustly supported in FAT. Overall, NTFS is more suitable for modern computing environments with larger storage requirements and stricter security needs.

Optimizing database queries in Django involves various strategies such as indexing commonly queried fields, denormalizing data to reduce joins, and using efficient ORM methods like select_related and prefetch_related to minimize database hits and improve performance.

Continuous Integration (CI) is a practice in Agile development where code changes are merged frequently into a shared repository. The primary goal is to detect integration issues early. CI involves automating tests and builds to ensure code quality and facilitate collaboration among team members. It plays a vital role in Agile by ensuring regular feedback, reducing integration problems, and promoting a more streamlined and efficient development process.

The Factory Method pattern deals with creating instances of a single type of object, providing a method in a class for this purpose. On the other hand, the Abstract Factory pattern creates families of related objects without specifying their concrete classes.

Lazy Loading is a technique in Angular that defers the loading of modules until they are required, which can significantly improve the initial load time and overall performance of an Angular application. While Dependency Injection, Routing, and Components are important features in Angular, Lazy Loading specifically addresses the optimization of loading modules, making it the correct option for this question.

The correct option is "IP." In the TCP/IP protocol suite, the Internet Protocol (IP) is responsible for handling the fragmentation and reassembly of packets. IP breaks large packets into smaller fragments for transmission across networks with different maximum transmission unit (MTU) sizes and reassembles them at the destination. ICMP (Option 1) is used for error reporting and network diagnostics. ARP (Option 2) resolves IP addresses to MAC addresses. TCP (Option 4) is a transport layer protocol for reliable, connection-oriented communication.

The purpose of a dummy node in a linked list is to improve search performance by ensuring that search algorithms always have a valid node to examine, even if the actual data begins after the dummy node.

Dependency Injection in Angular is a design pattern used to manage the components' dependencies. It allows for easy communication between components by injecting the required dependencies directly into them.

In JavaScript, the break statement is used to exit from a loop prematurely. When the break statement is encountered inside a loop, the loop immediately stops executing, and control is transferred to the statement immediately following the loop. This is commonly used to exit a loop based on a certain condition without completing all iterations. Understanding control flow statements like break is essential for writing efficient and structured code in JavaScript.