Two kinds of Java programs are applications and applets. Define and discuss each.
What will be an ideal response?
An application is just a regular program that runs on your computer. An applet is a little Java program that runs in a Web browser. Applets and applications are almost identical. The difference is that applications are meant to be run on your computer like any other program, whereas an applet is meant to be run from a Web browser. An applet can be sent to another location on the Internet and run there.
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Let R =(R; F) be a schema and S a set of attributes, such that S ? R. Let X ? Y be an FD such that X , Y ? S. Prove that
1. If X ? Y ? F+ then for every legal instance r of R its projection ?S(r) satis?es X ? Y . 2. Conversely, if X ? Y ? F+ then there is a legal instance r of R such that ?S(r) violates X ? Y .
Which device can relay packets from one network to another and is usually programmable?
a. Hub b. Repeater c. Switch d. Router
Storage devices access items in which of the following units of time?
A. nanoseconds B. macroseconds C. milliseconds D. petaseconds
Proven cases of real vulnerabilities can be considered vulnerability __________.
Fill in the blank(s) with the appropriate word(s).