Answer:
Communications technology
Explanation:
<u>Communications technology</u> consists of both physical devices and software, links the various pieces of hardware, and transfers data from one physical location to another.
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Answer:
Layer 4
Explanation:
MAC address works at the data link layer (layer 2) of the OSI model. Mac address allows computers to uniquely identify themselves in the network
IP Address is a logical address that works at the network layer of OSI model (layer 3) (actually the IP layer of TCP/IP model).
The port number works at the transport layer of the OSI model (layer 4).The port number uses sequence number to send segments to the correct application thereby ensuring they arrive in the correct order.
Answer: c) a program.
Explanation:
A computer, is a hardware device, that differs from those with dedicated hardware (like a TV set, a radio, or an old phone) , in that it can be used for different purposes, due to it's a programmable device.
The way in which the computer is instructed to do anything, is by means of a set of instructions to be read and executed sequentially, which is called a program.
The set of the different programs stored in the computer is which is known as the computer software.
Answer:
It might not work efficiently.
Explanation:
The function of the protocol rtd3.0 is to transfer data to a receiver from a sender.
As soon as the receiver received the packet transferred by the sender, we respond acknowledge (Ack) to the sender so that sender can confirm the receiver has gotten it.
The receiver will not send any acknowledgment if the packet he receives are such that bits contain error or not in order.
After that timeout, the packet will be re-transmitted by the sender.
It is then possible the protocol might seem to be inefficient if a packet is sent many times, because other packets will have to wait to sent until the current packet is sent successfully.
The solution to prevent this kind of issue is to allow for the occurrence of premature timeouts.
