Bundle: Enhanced Discovering Computers Â©2017, Loose-leaf Version + LMS Integrated MindTap Computing, 1 term (6 months) Printed Access Card

1st Edition

ISBN: 9781337351911

Author: Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell

Publisher: Cengage Learning

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Windows is an operating system produced by Microsoft Corporation, initially released in the year 1985 and also known as Microsoft Windows. It has been written in JavaScript with visual basics, and C. Windows is the most popular operating system (OS) for …

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Chapter 5, Problem 2CT

Explanation of Solution

Digital security risk:

In order to avoid the damage or loss of computer’s or mobile device’s software, data, information, hardware, or processing capacity, user is required to perform some actions or events which are termed as digital security risks.

The followings are some common digital security risks.

Internet and network attacks:

The higher level of security risk is sending the information through network compared to residing the information within company.

It exposes security with the help of malware, botnets, Denial of service, back door, and spoofing.

Unauthorized access and use:

Unauthorized access means accessing the computer or network without user’s authorization or permission or approval.

Unauthorized use is a process of using the computer data without the knowledge of the user or by using illegal activities.

Hardware theft:

The important information is saved by the user in their system or mobile devices...

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Chapter 5, Problem 10M

Chapter 5, Problem 3CT

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How to develop a C program that receives the message sent by the provided program and displays the name and email included in the message on the screen?Here is the code of the program that sends the message for reference: typedef struct { long tipo; struct { char nome[50]; char email[40]; } dados;} MsgStruct; int main() { int msg_id, status; msg_id = msgget(1000, 0600 | IPC_CREAT); exit_on_error(msg_id, "Creation/Connection"); MsgStruct msg; msg.tipo = 5; strcpy(msg.dados.nome, "Pedro Silva"); strcpy(msg.dados.email, "pedro@sapo.pt"); status = msgsnd(msg_id, &msg, sizeof(msg.dados), 0); exit_on_error(status, "Send"); printf("Message sent!\n");}

9. Let L₁=L(ab*aa), L₂=L(a*bba*). Find a regular expression for (L₁ UL2)*L2. 10. Show that the language is not regular. L= {a":n≥1} 11. Show a derivation tree for the string aabbbb with the grammar S→ABλ, A→aB, B→Sb. Give a verbal description of the language generated by this grammar.

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Chapter 5 Solutions

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Solution Summary: The author explains digital security risks, such as Internet and network attacks, malware, botnets, denial of service, back door, and spoofing.

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Chapter 5 Solutions