Answer and explanation : The TCP/IP means TRANSMISSION CONTROL PROTOCOL AND INTERNET PROTOCOL It governs all the communication which are performed over network it has a set of protocol. It defines how different types of conversation are performed without any fault through a network
THERE ARE 5 TYPES OF LAYER IN TCP/IP MODEL
- APPLICATION LAYER: It is present at upper level it is used for high level products for the network communication
- TRANSPORT LAYER: This layer is used for transfering the message from one end to other end
- NETWORK LAYER : Routers are present in network layer which are are responsible for data transmission
- DATALINK LAYER : it is used when there is any problem in physical layer for correcting this datalink are used
- PHYSICAL LAYER: Physical; layer are responsible for codding purpose which we used in communication process
Answer:
PBX system.
Explanation:
PBX is an acronym for private branch exchange. It is a private telephone network service that allows users to communicate by making or taking inbound and outbound calls using a gateway, voice mail, transfer calls, call queues and recording.
In an office, employees having a PBX telephone can call other employees in the same office regarding official work.
The callers have to dial a particular extension number so that the intended receiver gets the call.
Example of an extension number is 111-5001 and 111-5002, with a central number as 111-5000.
Hence, the telephone network used in this office is the PBX system.
The correct answer is your grandfather who would be a great business owner is: B
