Reston-based IT contractor Octo Consulting Group Inc. has expanded its national presence with the acquisition of Phoenix-based software company Connexta LLC. Terms of the deal were not disclosed. The acquisition comes a few months after Chevy Chase-based private equity firm Arlington Capital Partners LLC made an undisclosed investment in Octo to be used for strategic hirings, enhancing the company's technological capabilities and future acquisitions. Octo, founded in 2006, develops solutions...