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D322 INTRODUCTION TO IT QUESTIONS AND VERIFIED ANSWERS

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D322 INTRODUCTION TO IT QUESTIONS AND VERIFIED ANSWERS

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DoS (denial of service) attack


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the process of overloading a computer with messages and results in
suffocating the network resources.




Tcl (Tool Command Language)


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Often used in rapid prototyping and the creation of GUIs, it is a simple and
compact language but is also very powerful.

,Software Planning Phase


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The business typically defines the goals and purposes of new applications.




Supercomputer


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the biggest and fastest computers, designed to process huge amounts of
data. It is particularly useful in scientific and engineering applications such
as weather forecasting, scientific simulations, and nuclear energy research.




Dictionary Attack


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Performed by the attacker by using an application and a large dictionary
text file with just words. When the attacker runs the application, it tries
identifying the password by trying hundreds or thousands of words per
minute from that dictionary file.




First Generation Computer - Vacuum tubes


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, In use from 1946 to 1959, was the entry to what would consider computing
today. The ENIAC (Electronic Numerical Integrator and Calculator) was the
first real computer designed for the military and military-type applications.
It used vacuum tubes to store information and occupied the size of a
warehouse. It had to be programmed in machine language, which was
complicated.




Two types of Operating System


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Network operating system or Desktop operating system




Common Database Models


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Flat-File, Relational, Hierarchical, and Object-Oriented




Workstation


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a single-user computer designed for technical or scientific applications. It
has a faster microprocessor, a large amount of RAM, and high-speed
graphics cards. It generally performs a specific job with great expertise.
Graphics, music, and engineering design departments often use this type of
system.

, Registers


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They serve as temporary holding places for data being manipulated by the
CPU. It holds the inputs to the ALU and stores the results.




Malware


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Malicious software is any software intentionally designed to cause damage
to a computer, server, client, or computer network.




Mesh network


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connects every device in a network to every other device; mesh networks
enable redundancy while also introducing significantly more network
traffic.




System Unit


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