Computer Science Units 1-3

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Questions and Answers

Which book focuses on computer forensics and digital evidence?

  • Learn Computer Forensics (correct)
  • Fundamentals of Computers
  • Computer Architecture and Organization
  • Modern Operating Systems

What is the primary subject of the book 'Operating Systems: A Modern Perspective'?

  • Cyber security
  • Operating systems (correct)
  • Computer architecture
  • Computer forensics

Which author is associated with the book 'Data Communication and Networking'?

  • Gary Nutt
  • Beherouz A. Forouzan (correct)
  • Andrew S. Tanenbaum
  • William Oettinger

Which edition of 'Computer Fundamentals' is referenced?

<p>6th Edition (D)</p> Signup and view all the answers

What is the main focus of the book 'Cyber Security: Understanding Cyber Crimes'?

<p>Computer crimes and forensics (A)</p> Signup and view all the answers

Which number system is not included in the introductory content?

<p>Roman (D)</p> Signup and view all the answers

What type of storage device is defined as being directly accessible by the CPU?

<p>Primary Storage (A)</p> Signup and view all the answers

Which of the following is a characteristic of a local area network (LAN)?

<p>High-speed connections over short distances (B)</p> Signup and view all the answers

What is the main function of a router in networking?

<p>Routing data packets between different networks (A)</p> Signup and view all the answers

Which mobile network technology primarily supports voice communication?

<p>CDMA (D)</p> Signup and view all the answers

In what way can social media impact business?

<p>Increases customer engagement and brand awareness (D)</p> Signup and view all the answers

Which of the following is a security concern associated with social media?

<p>User privacy risks (C)</p> Signup and view all the answers

Which of the following best describes ASCII?

<p>A character encoding standard (C)</p> Signup and view all the answers

Flashcards

Operating System Internals

Study of the internal workings and design principles of operating systems.

Computer Architecture and Organization

Examines the fundamental components of a computer, including hardware, software, and their interactions.

Computer Fundamentals

Provides an introduction to essential computer concepts, including hardware, software, data representation, and operating systems.

Data Communication and Networking

Covers the transfer of data between computers and networks, including protocols, media, and network topologies.

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Computer Forensics

Involves the investigation of digital evidence, including data recovery, analysis, and presentation in legal proceedings.

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Binary Number System

A base-2 system that uses 0 and 1 to represent numbers, forming the fundamental building block of digital computing.

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Decimal Number System

A system that uses 10 digits (0-9) to represent numbers. The most common system people use in everyday life.

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Processor

The central processing unit (CPU) of a computer, responsible for executing instructions and performing calculations.

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LAN (Local Area Network)

A type of computer network that covers a small geographical area, like a home, office building, or school.

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Booting Process

The process of starting up a computer and loading the operating system into memory.

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TCP/IP Protocol Suite

A set of rules and protocols that define how computers interact and exchange data over a network.

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Router

An electronic device that connects multiple computers together in a network, allowing them to share data and resources.

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MAC Address

The unique identifier assigned to each device on a network, allowing it to be recognized by other devices.

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Study Notes

Unit 1

  • Introduces binary, octal, decimal, and hexadecimal number systems, conversion from one to another
  • Explains representation of signed and unsigned binary numbers
  • Discusses ASCII and UTF
  • Covers computer history, evolution, key terms, computer architecture, hardware, and software
  • Includes programming languages, compilers, and interpreters

Unit 2

  • Explains computer hardware components like motherboard, processor, memory, storage devices, and networking hardware
  • Discusses secondary storage devices
  • Covers operating systems (OS), booting process, and different types of operating systems, including Windows and Linux
  • Includes file systems

Unit 3

  • Defines computer networks, digital and analog signaling methods
  • Explains network topology and network types (LAN, MAN, WAN)
  • Covers protocols such as OSI layer, TCP/IP protocol suite
  • Discusses communication devices, different types of IP addresses and classes, subnet masks, MAC addresses, and the internet
  • Includes websites, webpages, firewalls, IDS, and IPS
  • Explains network and internet-related crimes

Unit 4

  • Introduces mobile technologies (CDMA/GSM)
  • Details components of cellular networks and software characteristic of mobile devices
  • Explains mobile operating systems, mobile phones, international mobile equipment identity (IMEI), subscriber identity module (SIM), and smartphones

Unit 5

  • Discusses social media, security issues in social media, and cyberbullying
  • Covers crimes of social media like online grooming and cyberstalking
  • Covers social media's impact on business, politics, revolutions, and emerging trends

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