NCTI

The Open Systems Interconnection reference model (OSI/RM) Network Layer serves which primary purpose? - ANSWER It uses Layer 3 addresses to create multiple routed networks. The address 68.56.189.17 belongs to which Internet protocol (IP) class? - ANSWER Class A What happens to a datagram sent by a higher level protocol to a 127.x.y.z address? - ANSWER The datagram loops back inside the host and never leaves the network interface card (NIC). Which device evaluates and acts upon a packet'...

Which concept has enabled Software as a Service (SaaS), Platform as a Service (PaaS), and Networking as a Service (NaaS) offerings? - ANSWER The separation of the transport and connectivity from the applications and services running atop the transport. Which piece of equipment in a VoIP (voice over Internet protocol) phone system routes a call to the public switched telephone network (PSTN) when the receiving location is from outside the Packet Cable managed IP network? - ANSWER Gateway Wh...

The Open Systems Interconnection reference model (OSI/RM) Network Layer serves which primary purpose? - ANSWER It uses Layer 3 addresses to create multiple routed networks. The address 68.56.189.17 belongs to which Internet protocol (IP) class? - ANSWER Class A What happens to a datagram sent by a higher level protocol to a 127.x.y.z address? - ANSWER The datagram loops back inside the host and never leaves the network interface card (NIC). Which device evaluates and acts upon a packet'...

1. Which piece of equipment in a VoIP phone system routes a call to the public switched telephone network (PSTN) when the receiving location is from outside the PacketCable managed IP network?: Network interface device (NID). 2. What are the three sub-network interfaces managed by PacketCable?: Hybrid fiber/coax (HFC), managed IP, and public switched telephone network (PSTN). 3. Which of the VoIP service tiers bypass the cable operator's direct link to the public switched telephone network...

Which of these components is used in a passive optical network (PON)? - ANSWER Optical splitters. Which should be used to cut the fiberdrop's buffer tube? - ANSWER A tube cutter What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once? - ANSWER Changing the infrastructure all at once would cause too many service disruptions. When a pre-connectorized fiber is not attached to equipment, what should be attached ...