JN0-102 · Question #143
Which statement is true regarding the Junos OS?
The correct answer is A. Each process runs in its own protected memory space ensuring that one process cannot directly. A fundamental architectural principle of Junos OS is that each process operates within its own protected memory space.
Question
Which statement is true regarding the Junos OS?
Options
- AEach process runs in its own protected memory space ensuring that one process cannot directly
- BProcesses share memory space but use separate ASICs so that one process cannot directly
- CA central processor called the IP2 Chip dynamically assigns memory as process needs fluctuate.
- DThe memory management daemon (mmd) is responsible for allocating new memory for processes
How the community answered
(43 responses)- A88% (38)
- B7% (3)
- C2% (1)
- D2% (1)
Why each option
A fundamental architectural principle of Junos OS is that each process operates within its own protected memory space.
The Junos OS kernel allocates a separate, protected memory space for each software process, ensuring that the failure of one process does not directly impact other processes or the overall system stability.
Processes in Junos OS do not share memory space in a way that would compromise isolation; they operate in protected, separate memory regions.
The Junos OS memory management is handled by the kernel, not a specific 'IP2 Chip' for dynamic memory assignment.
The memory management daemon (mmd) is not a standard Junos OS daemon primarily responsible for allocating new memory for all processes.
Concept tested: Junos OS architecture-process isolation
Source: https://www.juniper.net/documentation/us/en/software/junos/junos-basics/topics/concept/junos-os-architecture.html
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