Home›Articles›Why Cisco IOS runs as one program, and what that costArticleWhy Cisco IOS runs as one program, and what that costArticlesConnectionsSourcesComments (0)Reader Challenges (0)ConnectionsArticle OnCisco IOS, Systems Well-attested SourcesWikipedia: Cisco IOSArchitectureQuote, ArchitectureCisco IOS has a monolithic architecture, owing to the limited hardware resources of routers and switches in the 1980s.View the SourceAtlas Article Vocabularytier 1AtlasComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.