ITGSS Certified DevOps Engineer Practice Test

The term that describes the limitation of a process's visibility of system resources in Linux is namespace.

Namespaces are a fundamental feature of the Linux kernel that provide isolation to processes. They enable each process to have its own view of system resources, such as system IDs (user and group IDs), process IDs, file systems, network interfaces, and more. By creating a separate namespace for a group of processes, those processes can operate as if they are on their own isolated system, without interference or awareness of other processes that are outside their namespace. This is crucial for enhancing security and creating lightweight environments such as containers, where applications can run reliably across different environments without conflicts.

The other options focus on different concepts. Containers are built on top of namespaces and other technologies but do not specifically describe the limitation of visibility themselves. Services and daemons refer to specific types of processes and their functionalities, rather than highlighting the concept of resource visibility isolation provided by namespaces.