Deja Dup is Ubuntu's native backup and restore tool, allowing Sam to recover deleted files from a previous backup.
* Option B (Checkpoints):Hyper-V term, not Ubuntu.
* Option C (Shadow Copy):Windows feature, not Ubuntu.
* Option D (Snapshots):General term, not Ubuntu-specific.
* "Deja Dup, Ubuntu's native backup utility, enables file recovery from prior backups, simplifying restoration on Linux systems" (Module: System Recovery, Section: OS-Specific Tools).

In Microsoft Hyper-V architecture, the VM Management Service (part of the Hyper-V Virtual Machine Management Service, VMMS) resides in the Parent Partition, which hosts the management OS and controls virtual machines.
* Option A (Child Partition):Hosts guest VMs, not management services.
* Option C (Hypervisor Layer):Manages hardware abstraction, not services.
* Option D (Windows Kernel):Core OS component, not specific to VM management.
* "The VM Management Service in Hyper-V operates within the Parent Partition, overseeing VM creation, configuration, and operation" (Module: Virtualization and Recovery, Section: Hyper-V Architecture).

N-Tier Architecture combines client-server principles with multiple layers (e.g., presentation, application, data), enhancing scalability and flexibility.
* Option B:Not a standard term.
* Option C:Basic client-server, not layered.
* Option D:Refers to dependency, not architecture type.
* "N-Tier Architecture merges client-server with layered design, supporting robust, scalable systems for DR" (Module: Network Architectures, Section: Architecture Types).