Firewalls are connected with a network device which blocks untrusted network forming a barrier in between trusted and un-trusted network.
Answer:
Microsoft PowerPoint.
Explanation:
Because, it is industry standard and widely recognized and used in world.
Software-defined infrastructure (SDI) is the definition of technical computing infrastructure entirely under the control of software with no operator or human intervention. It operates independent of any hardware-specific dependencies and are programmatically extensible.