本次美国代写是软件工程的一个限时测试

1. [16 points] The numbering scheme used by company A to manage the versions of system X follows

the pattern: software_name.major.minor[.fix][- configuration]. Based on this

scheme, the company has produced multiple versions of X according to the timeline below.

a) [3 points] How many versions of X have been produced so far? Justify your answer.

b) [3 points] How many configurations of X, in terms of assembled components, are currently being

commercialized? Justify your answer.

c) [3 points] What is the minimal and the maximal number of releases made by company A regarding

X, considering that at least its baselines are always released for customers? Justify your answer.

d) [3 points] Which major version of X looks more reliable? Justify your answer.

e) [4 points] Consider that a given customer M of company A updates software X whenever a new

version is available (pay attention to the timeline). If any minor change adds 1 feature to X and any

major change adds 5 features to X, how many features were added to the version of X currently

used by M since the first release (do not consider the first version of X as a change)? Justify your

answer.

2. [11 points] A given company B currently employs three software developers. They are making

modifications to the components 𝑌 1 and 𝑌 2 of software Y according to bugs and change requests made

by the costumers of B. This company has been using a new version control tool that allows employees

to simultaneously work on the same system components. This tool maintains the components integrity

(changes are not overwritten) by guarantying that a new version is always created when someone sends

source-code back to the centralized repository. By analyzing the sequence of check-out and check-in

events in the table below, label the software versions created after day 3.

3. [20 points] The ultra-skilled software development team of company C wants to estimate the effort and

the nominal development time (in months) to produce software Z. According to the requirements

specified, Z will be very large (approximately 500KLOC). Choose the most appropriated LOC-based

model among the ones listed below considering that C wants to minimize development costs. After

that, to estimate the nominal development time use the Walston-Felix model (T = 2.5E0.35). Next, find

how many developers should work on this project to deliver it according to estimated nominal

development time. Finally, find what would be the team size that would maximize the productivity of

this company, reducing the nominal development time of software Z as much as possible (for this

productivity calculation, use as average productivity 3,000 LOC/person-month, productivity loss = 5%,

and full interaction between team members).