Anna: "How do you securely transfer your sales report to your supervisor?"

Belle: "We bought a software from the Computer Center. We use the File Transfer Protocol to send and receive files securely. It's secure because you have to know the username and password before you can access the server. And my password is very long and hard to guess!"


"NetWare is a computer network operating system developed by Novell, Inc. It initially used cooperative multitasking to run various services on a personal computer, using the IPX network protocol."

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"Unix is not as flexible as Linux. It has less compatibility with different types of hardware. Unix installation requires a strict and well-defined hardware machinery and works only on specific CPU machines."
"Linux OS being an open source OS, its source code is available for free. You can, therefore, read, modify and implement it on your machine. You can even sell it."

"In computer science, a semaphore is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as a multiprogramming operating system."

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"CR and LF are control characters, respectively coded 0x0D (13 decimal) and 0x0A (10 decimal). They are used to mark a line break in a text file. As you indicated, Windows uses two characters the CR LF sequence; Unix only uses LF and the old MacOS ( pre-OSX MacIntosh) used CR."

Grace: "Rapid prototyping is what we need if we want business users to participate actively in the development process."

Angelica: "Much better if we have reusable components! Then, we'd be able to show functional components quickly."

Hey David, I made a super great improvement to our system! I have dropped all the foreign keys to make the queries faster.

Jessica: "Hey, Waldo. About the hierarchical databases, what do you intend to use it for?"

Waldo: "Ah, I intend to use the hierarchical databases to record the logs of all people coming in and out of the park. In that way, we will never lose data. We can't afford to lose data these days."





Jade: "Hey Felicity, come sit with us!"

Jasper: "... so that's what we're trying to build. Our population is growing and we are already lacking IP addresses for our devices. With the current IP address notation, there's just not enough for the 7 billion people in our kingdom."

Steve: "Right, that's why the Computer Center needs to fix IPv6 and create IPv7 to accommodate more devices in the Internet. Because IPv6 cannot handle one device for each person in our kingdom."

Jasper: "What if instead of IP addresses, we use hostnames instead? In that way, we will not be limited with just numbers."

Jade, Jasper, and Steve trusted you. Way to go!