JN0-102 · Question #29
What are two benefits of the modular design of the Junos OS? (Choose two.)
The correct answer is B. Each module runs in its own protected memory space. C. Each module can be individually restarted. The modular design of Junos OS enhances system stability and maintainability by isolating processes and allowing independent restarts.
Question
What are two benefits of the modular design of the Junos OS? (Choose two.)
Options
- AEach module uses application-specific integrated circuits (ASICs).
- BEach module runs in its own protected memory space.
- CEach module can be individually restarted.
- DEach module is supported across all Junos platforms.
How the community answered
(44 responses)- A2% (1)
- B91% (40)
- D7% (3)
Why each option
The modular design of Junos OS enhances system stability and maintainability by isolating processes and allowing independent restarts.
While some Junos platforms utilize ASICs for specific forwarding functions, the modular design of the OS itself refers to software processes, not a requirement for each software module to use ASICs; ASICs are hardware components, not a direct benefit of the software's modular design.
Junos OS processes are designed to run as separate modules, each operating within its own protected memory space. This isolation prevents a failure in one module from crashing the entire operating system, ensuring greater system stability and reliability.
Due to their independent nature and separate memory spaces, individual Junos OS modules can be restarted without affecting other operational processes or requiring a full system reboot. This capability allows for targeted troubleshooting and maintenance, minimizing service disruption.
Not all Junos modules are supported across all Junos platforms; specific features and their associated modules can vary depending on the hardware platform's capabilities and intended use case.
Concept tested: Junos OS modular design benefits
Source: https://www.juniper.net/documentation/us/en/software/junos/junos-overview/topics/concept/junos-os-software-architecture-overview.html
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