Software Engineering Answers

Q.No.3. (6 Marks) subject : cyber security

You logged into your Gmail account and find an email form Habib bank limited. In this email, the bank is informing you about some issue in your saving account. The bank also providing important instruction and a hyperlink. These instruction and hyperlink is for login into your saving account for fixing the issue. What will you do?

Subject human computer interaction

Q.no1. What influence does the social environment in which you work have on your interaction with the computer? What effect does the organization (commercial or academic) to which you belong have on the interaction?

Q.no2. What are mental models, and why are they important in interface design?

Human computer interaction

What influence does the social environment in which you work have on your interaction with the computer? What effect does the organization (commercial or academic) to which you belong have on the interaction?

consider a 32-bit machine with 64kb cache, 32b block and two-way set associative cache, obtain the offset bits, index bits and tag bits for mapping address to frames on this machine.

The client's ultimate objective is to have an online software system that gives information about the movies that the client sells to customers online. The system gives information about movies and actors/actresses. That is, the system should be accessed online. Each movie is identified by title and year of release. A movie has a genre (drama, comedy, etc.), a running time, and one director. A movie is made at a movie studio and may have multiple producers (people in charge of the movie production).

Actors are identified by name and date of birth, and may appear in one or more movies. An actor who appears in a movie, has a role. There may be one or more actors that appear in the movie, and some of them may be in the lead role.

a)        Draw ER diagram or class diagram for the given scenario.

b)        Draw Data Flow Diagram up to level-2 for the given scenario.        

All individual Students are advised to prepare the Activity table including values of Activity Duration, Earliest Start date, Latest Start date, Earliest Finish date, Latest Finish date based on Assumptions, keeping in view system description mentioned in Q.No.1.

You need to Construct Activity Table according to following methods.                        

1. Critical Path Method (CPM) Network.        

2. Arrow Diagramming Method (ADM).

3. Precedence Diagramming Method (PDM).

Explain full stack state management.

1) Roger Amster teaches an English course in which 40 students are enrolled. After yesterday’s class, Roger questioned the 5 students who always sit in the back of the classroom. Three of the 5 said “yes” when asked if they would like A Tale of Two Cities as the next class reading assignment.

a)     Identify the population and the sample in this situation.

b)    Is this likely to be a representative sample? If not, why not?

 Operating System

4.In a page virtual storage system, each process has 4 memory allocation memory blocks. When the process begins executing, the data area is empty. If now it calls the pages in the program with this sequence: 10 Marks

5 , 3 , 6 , 4 , 3 , 5 , 1 , 4 , 2 , 5 , 6 , 4 , 2 , 5 , 1

Write down the number of page faults when using the following page-replacement algorithms and draw the Page trend graph.

FIFO page-replacement algorithm

LRU page-replacement algorithm

(3)OPT page-replacement algorithm