500-215 · Question #51
What is the Cisco ASR 5000 operating system software based on?
The correct answer is D. Star OS. Star OS (Option D) is the correct answer because the Cisco ASR 5000 series runs on StarOS, a purpose-built, carrier-grade operating system originally developed by Starent Networks before Cisco acquired the company in 2009. StarOS is specifically designed for mobile packet core an
Question
What is the Cisco ASR 5000 operating system software based on?
Options
- ACisco IOS
- BCombination of Linux and Cisco IOS
- CLinux software
- DStar OS
How the community answered
(16 responses)- B6% (1)
- D94% (15)
Explanation
Star OS (Option D) is the correct answer because the Cisco ASR 5000 series runs on StarOS, a purpose-built, carrier-grade operating system originally developed by Starent Networks before Cisco acquired the company in 2009. StarOS is specifically designed for mobile packet core and service provider workloads, offering high availability and scalability.
Why the distractors are wrong:
- A (Cisco IOS) - IOS is used on routers and switches; the ASR 5000 is a specialized mobile gateway platform that never ran IOS.
- B (Combination of Linux and Cisco IOS) - This is a plausible-sounding distractor but is simply not true; StarOS is its own distinct OS lineage.
- C (Linux software) - While StarOS has some POSIX-like characteristics, it is not Linux. It is a proprietary, real-time OS built for telecom-grade performance.
Memory tip: Think "ASR 5000 → StarOS" - the star shape has 5 points, linking the platform to its OS name. Alternatively, remember that Cisco acquired Starent (the Star in StarOS) specifically to get this platform.
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