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Docker DCA Exam - Topic 5 Question 112 Discussion
Topic #: 5
Is this a type of Linux kernel namespace that provides container isolation?
Solution.Process ID
Process ID is a type of Linux kernel namespace that provides container isolation.Linux namespaces are a feature of the Linux kernel that isolate and virtualize system resources of a collection of processes1.Process ID namespace isolates the process ID number space, meaning that processes in different PID namespaces can have the same PID2.This allows each container to have its own init process with PID 1, which is the ancestor of all other processes in the container3.Process ID namespace also affects other identifiers, such as thread IDs, parent process IDs, and session IDs4.Reference: Namespaces in operation), pid_namespaces),What is a PID namespace?, Linux Namespaces: PID)
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