A.an application architecture B.a distributed system C.a system scope D.a system physical model
A.
Information systems design is defined as those tasks that focus on the specification of a detailed computer-based solution. Typically, there are four systems design tasks for in-house development.
B.
1) The first task is to specify (71) ,which defines the technologies to be used by one, more, or all information systems in terms of their data, processes, inteces, and network components. This task is accomplished by yzing the data models and process models that are initially created during requirements ys16.
C.
2) The next systems design task is to develop the (72) . The purpose of this task is to prepare technical design specifications for a database that will be adaptable to future requirements and expansion.
D.
3) Once the database prototype has been built, the systems designer can work closely with system users to develop input, output and dialogue specifications. The (73) must be specified to ensure that the outputs are not lost, misrouted, misused, or incomplete.
E.
4) The fourth design task involves packaging all the specifications from the previous design tasks into a set of specifications that will guide the (74) activities during the following phases of the systems development methodology.
F.
Finally, we should (75) and update the project plan accordingly. The key deliverable should include a detailed plan for the construction phase that should follow.
transport layer protocol usually has several responsibilities.One is to create a process-to-process communication;UDP uses (1) numbers to accomplish this.Another responsibility is to provide control mechanisms at the transport level.UDP does this task at a very minimal level.There is no flow control mechanism and there is no(2) for received packet.UDP, however, does provide error control to some extent.If UDP detects an error in the received packet,it will silently drop it. The transport layer also provides a connection mechanism for the processes.The (3) must be able to send streams of data to the transport layer.It is the responsibility of the transport layer at (4) station to make the connection with the receiver, chop the stream into transportable units,number them,and send them one by one.It is the responsibility of the transport layer at the receiving end to wait until all the different units belonging to the same process have arrived,check and pass those that are (5) free, and deliver them to the receiving process as a stream.