Software Engineering Answers

what are the issues that concern to emails include confidentiality and authentication?

How to effectively reflect the library management system humanized design?

Detailed study of porteus,application s,advantages.

. How has the “open source” software movement made an impact on society as a whole? 

. What is the likely future of the “open source” software movement?

privide an example for each of the types of patterns below :

• Animal pattern
• Plant pattern
• Cultural pattern

(b). Designers are constantly undertaking research into possible improvements that can be made to various types of memory that computers use. Often times, the designers grapple with issues relating to the design of computer memories. Critically compare and contrast registers and magnetic disk storage in a computer system that you AN[4 marks] AP[4 marks]5 frequently use. You may draw a suitable diagram and/or a table of comparisons to illustrate your answer, if you desire. (c). Describe the circumstance(s) for which System Call(s) may be invoked (or made) in a computer system; and explain how the operating system responds to such invocation(s). 

Compare and contrast the forms of interface that operating systems provide to users of computer systems. Give practical examples to illustrate your answer and discuss practical limitations of each form of interface. 

4.1 You are required to draw a sequence diagram for the below given scenario. 7 Marks Construct a sequence diagram for the following scenario based on the student counselling process demonstrated in Question-1: Completing the counselling process of a student in which the initial message from the system’s user interface is sent to the Counselling object to verify the student. Then the second message to the counsellor object to prepare schedule. The counsellor checks for a free slot for counselling and once it is available it will be added to the schedule. Once the schedule is updated a message will be sent to the student object and another message to the user interface to confirm the student schedule. You are required to identify the classes and corresponding operations. You do not need to consider the alternative scenario to answer this question.

Give short answers to the following:

a.      What is the difference between machine learning and deep learning?

b.     Differentiate between supervised, unsupervised and reinforcement learning using one example for each in terms of their applications.

c.      How simple regression is different from logistic regression in terms of output variable?

d.     What do you understand by logit in logistic regression?

e.     What do you understand by the slope of error function?

f.       What is a cost function?

g.      What is the difference between least square and cross entropy cost functions in terms of applications of predictions?

h.     What is a root node and how is it determined?

i.        What are leaf nodes?

How does random forest work?