Explain the differences between projects, programs, and portfolios.
What will be an ideal response?
This should be a very basic and clear answer reflecting a hierarchy type structure within
an organization that would have projects at the lowest level reporting within programs,
and projects and programs reporting up to a portfolio. Although this answer would seem
very straightforward and clear, variations of this answer might include whether
portfolios have only programs or a combination of projects, programs, and individual
work activities, which by definition is still correct for a portfolio. (This answer may
reflect a student’s past experience at an organization.) Portfolios can also have a
combination of related and non-related programs and projects. This answer should
always reflect programs having a combination of related projects whereas portfolios can
have either related or non-related projects, programs, and work activities.
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Consider the following atomic commit protocol that attempts to eliminate the blocking that occurs in the two-phase commit protocol. The coordinator sends a prepare message to each cohort containing the addresses of all cohorts. Each cohort sends its vote directly to all other cohorts. When a cohort receives the votes of all other cohorts it decides to commit or abort in the usual way.
a. Assuming no failures, compare the number of messages sent in this protocol and in the two-phase commit protocol. Assuming that all messages take the same fixed amount of time to deliver, which protocol would you expect to run faster? Explain. b. Does the protocol exhibit blocking when failures occur?
How can an SMTP server be exploited?
What will be an ideal response?
Corporate websites should be evaluated. The following is a list of key things to learn about the website visitors:
What will be an ideal response?
What kind of printer uses a grid of tiny pins, also known as printwires, to strike an inked printer ribbon and produce images on paper?
A. Dot-matrix B. Inkjet C. Laser D. Thermal