For those pursuing the Nokia NRS I, NRS II, or SRA certifications , having a local instance of SROS is the most cost-effective way to master the CLI. Deployment Requirements
The file is a virtual disk image for the Alcatel-Lucent (now Nokia) 7750 Service Router (SR) operating system, known as TiMOS . It is primarily used by network engineers for lab simulations, testing, and certification prep (such as NRS I/II). Overview & Purpose
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