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Questions and Answers
What is the primary characteristic of a Personal Area Network (PAN)?
What is the primary characteristic of a Personal Area Network (PAN)?
Which network type is considered synonymous with the internet?
Which network type is considered synonymous with the internet?
In which scenario might a Local Area Network (LAN) be used?
In which scenario might a Local Area Network (LAN) be used?
What type of communication involves using coaxial or fiber-optic cables?
What type of communication involves using coaxial or fiber-optic cables?
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Which of the following is NOT a method of wired communication?
Which of the following is NOT a method of wired communication?
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What is the role of an Ethernet cable in a network setup?
What is the role of an Ethernet cable in a network setup?
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What is a Universal Serial Bus (USB) primarily used for?
What is a Universal Serial Bus (USB) primarily used for?
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Which statement about Wide Area Network (WAN) is correct?
Which statement about Wide Area Network (WAN) is correct?
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What is the primary function of an RS-232 serial connection?
What is the primary function of an RS-232 serial connection?
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Which connector is known for its 6-pin configuration and is specifically color-coded for mouse and keyboard connections?
Which connector is known for its 6-pin configuration and is specifically color-coded for mouse and keyboard connections?
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The HDMI connector is primarily used for which type of data transmission?
The HDMI connector is primarily used for which type of data transmission?
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What color indicates a microphone input jack in a 3.5 mm audio jack setup?
What color indicates a microphone input jack in a 3.5 mm audio jack setup?
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Which of the following connectors has been largely replaced by HDMI in modern devices?
Which of the following connectors has been largely replaced by HDMI in modern devices?
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What type of wireless communication includes technologies such as cellular transmission and WIFI?
What type of wireless communication includes technologies such as cellular transmission and WIFI?
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Which audio jack color is typically designated for front speaker output?
Which audio jack color is typically designated for front speaker output?
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What is the primary difference between a serial and parallel connection?
What is the primary difference between a serial and parallel connection?
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What is the binary representation of the uppercase character 'A' in ASCII?
What is the binary representation of the uppercase character 'A' in ASCII?
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Which type of bus carries command instructions from the CPU?
Which type of bus carries command instructions from the CPU?
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What is the primary role of the address bus?
What is the primary role of the address bus?
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What does the data bus primarily do in a computer system?
What does the data bus primarily do in a computer system?
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How do computers primarily communicate with each other?
How do computers primarily communicate with each other?
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What do programmers do?
What do programmers do?
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Which of the following correctly describes the role of a system bus?
Which of the following correctly describes the role of a system bus?
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Which statement about ASCII representation is accurate?
Which statement about ASCII representation is accurate?
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What is the binary number system primarily composed of?
What is the binary number system primarily composed of?
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Which of the following correctly describes the ASCII code?
Which of the following correctly describes the ASCII code?
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Which number system uses 8 digits?
Which number system uses 8 digits?
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What is the main purpose of the system bus in a computer?
What is the main purpose of the system bus in a computer?
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What distinguishes system software from application software?
What distinguishes system software from application software?
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Which statement about how computers interpret keyboard inputs is correct?
Which statement about how computers interpret keyboard inputs is correct?
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What does 'bi' signify in the term binary?
What does 'bi' signify in the term binary?
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What role does the decimal number system play in comparison to the binary number system?
What role does the decimal number system play in comparison to the binary number system?
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What is the primary purpose of the internet?
What is the primary purpose of the internet?
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Which organization originally established the ARPANET?
Which organization originally established the ARPANET?
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Which of the following is NOT a function of the internet?
Which of the following is NOT a function of the internet?
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What technology significantly advanced the internet, providing a means to display graphics and text?
What technology significantly advanced the internet, providing a means to display graphics and text?
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What is Internet2 known for?
What is Internet2 known for?
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As of 2018, approximately how many people were connected to the internet worldwide?
As of 2018, approximately how many people were connected to the internet worldwide?
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Which of these companies is known as the largest network company mentioned?
Which of these companies is known as the largest network company mentioned?
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Which of the following best describes how data travels through the internet?
Which of the following best describes how data travels through the internet?
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Study Notes
Computer Number Systems
- Computers use a binary system, with 0 and 1, unlike humans who use the decimal system with 10 digits.
- Other number systems are used to translate between binary language and humans:
- Octal number system uses 8 digits
- Hexadecimal number system uses 16 digits
How Computers Interpret Data
- Computers use the American Standard Code for Information Interchange (ASCII) to translate keyboard characters into binary code.
- Each character, like an uppercase ‘A’, has a unique binary code, such as 0100 0001.
How Computers Communicate
-
System Bus: a pathway that allows communication between the computer's CPU, memory, and peripherals (keyboard, mouse, etc.).
- Data bus: transfers data between memory and the CPU.
- Address bus: identifies specific locations within the computer system for instructions, files, and devices.
- Control bus: carries commands from the CPU and status signals back from devices.
Computer Networks
- Different types of networks connect computers.
- Personal Area Network (PAN): limited to a single person's devices within 10 meters.
- Local Area Network (LAN): connects computers and devices within a specific building or area.
- Wide Area Network (WAN): covers a large geographical area and can include multiple LANs and PANs.
Wired Communication
- Coaxial cables: used in older systems for data transfer.
- Fiber-optic cables: newer technology providing high-speed data transmission.
- Ethernet cables: used for connecting computers to network devices.
- USB: universal interface connecting devices like keyboards, printers, and external drives.
- FireWire: high-speed data transfer for devices like hard drives.
- Serial: standard for communicating with modems, printers, etc., but now largely replaced by newer technologies.
- Parallel: previous standard for connecting peripherals, now obsolete.
- PS/2: 6-pin connector for keyboard and mouse connections, often color-coded.
- VGA: 15-pin connector for video signals, being replaced by HDMI.
- HDMI: transmits high-definition audio and video to computers, projectors, and TVs.
- Audio Jacks: 3.5mm jacks for microphones (input) and speakers (output), often color-coded.
Wireless Communication
- Enables communication without cables, using various types of wireless transmission.
- This includes microwave transmission, satellite communication, cellular transmission, and radio transmission like Wi-Fi.
The Internet
- Global network connecting millions of computers through routers and servers.
- Internet service providers (ISPs) like PLDT and Globe Telecom enable internet access for many users.
The Internet: Then and Now
- Originated from ARPANET, developed by the US Department of Defense in the 1960s for military collaboration.
- The advancement of hypertext-based technology (WWW or Web) allowed for text, graphics, and multimedia content to be readily displayed.
Internet2
- A not-for-profit consortium of U.S. research and education institutions working on advanced technologies and solutions like telemedicine, digital libraries, and virtual labs.
The Internet's Purpose
- Primarily functions to move and transfer digitized information (data) between locations.
- Used for a wide range of tasks like email, website searches, and various online services.
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Description
Explore the fundamentals of computer number systems, including binary, octal, and hexadecimal. Understand how computers interpret data through ASCII and the role of the system bus in communication. This quiz covers essential concepts in computer science and data processing.
