Networking Concepts Quiz
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Questions and Answers

What is a primary characteristic of real-time systems?

  • They require immediate data processing after input. (correct)
  • They process data with a delay.
  • They operate without the need for fault-recovery.
  • They are inexpensive to set up and maintain.

    • Which of the following is an example of an online interactive system?

  • Automatic teller machines
  • Science research software
  • Online ticket reservation systems (correct)
  • Video conferencing systems

    • What is the main advantage of parallel processing systems?

  • They can operate independently without networking.
  • They enable the simultaneous execution of multiple tasks. (correct)
  • They can only run one task at a time.
  • They require fewer CPUs for operation.

    • In distributed processing systems, what is a key feature?

    <p>They rely on idle detection by sophisticated software. (C)</p> Signup and view all the answers

    Which statement about real-time systems is incorrect?

    <p>They are inexpensive compared to other systems. (D)</p> Signup and view all the answers

    What is a primary function of a hub in a network?

    <p>Serve as a central connection point (B)</p> Signup and view all the answers

    Which device is specifically used to connect different networks?

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

    What role does a switch play in a network compared to a hub?

    <p>It can connect more devices than a hub. (A)</p> Signup and view all the answers

    How does a repeater function in a network environment?

    <p>It amplifies and cleans signals. (D)</p> Signup and view all the answers

    What is the main benefit of centralized data management in a network?

    <p>It ensures consistent access control management. (B)</p> Signup and view all the answers

    Which statement accurately describes a network interface card (NIC)?

    <p>It connects to the network via different types of ports. (B)</p> Signup and view all the answers

    What is NOT a common service in a networked environment?

    <p>Direct Device Manufacturing (A)</p> Signup and view all the answers

    Which device can interconnect two or more LANs of the same type?

    <p>Bridge (B)</p> Signup and view all the answers

    Which of the following is an example of a general search engine?

    <p>Yahoo (C)</p> Signup and view all the answers

    What type of search engine would you use for specific topics such as medical or financial information?

    <p>Specialized search engine (D)</p> Signup and view all the answers

    Which example illustrates a general search engine that supports searches using natural language?

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

    What is the primary function of a spam trap in relation to search engines?

    <p>To filter out irrelevant content (C)</p> Signup and view all the answers

    Which of the following terms refers to an application that leverages keyword skills to conduct searches?

    <p>Search engine (B)</p> Signup and view all the answers

    What characterizes a Local Area Network (LAN)?

    <p>It connects computers within a limited area, like an office or building. (D)</p> Signup and view all the answers

    Which of the following statements about Wide Area Networks (WAN) is true?

    <p>WAN can link multiple LANs over large geographical areas. (B)</p> Signup and view all the answers

    Which of the following best describes the common services available in a networked environment?

    <p>They allow for communication, file sharing, and Internet access. (A)</p> Signup and view all the answers

    Which method generally has faster Internet access speeds?

    <p>Cable modem (C)</p> Signup and view all the answers

    What is a key difference between LANs and WANs regarding coverage?

    <p>LANs cover local areas, while WANs cover extensive geographic regions. (C)</p> Signup and view all the answers

    What is one advantage of dividing a large task into smaller tasks for processing?

    <p>More efficient resource management (A)</p> Signup and view all the answers

    Which of the following is a disadvantage of using multiple computers for processing?

    <p>Increased communication overhead (D)</p> Signup and view all the answers

    What benefit does task division provide when utilizing a network of computers?

    <p>Ability to reassemble results seamlessly (A)</p> Signup and view all the answers

    In which scenario is the overall performance likely to suffer when using multiple computers?

    <p>When network traffic is heavy (A)</p> Signup and view all the answers

    Which task is commonly cited as an example of using multiple computers for processing?

    <p>Computer animation rendering (D)</p> Signup and view all the answers

    Why is using multiple computers typically more cost effective than a single powerful computer?

    <p>Ability to utilize inexpensive hardware in parallel (B)</p> Signup and view all the answers

    What characteristic of a multi-computer setup enhances its resilience compared to a single powerful computer?

    <p>Improved fault tolerance (B)</p> Signup and view all the answers

    How can performance be measured when multiple computers collaborate on a task?

    <p>By balancing load evenly across computers (A)</p> Signup and view all the answers

    What is the primary reason multiple computers can outperform a single powerful computer?

    <p>Parallel processing of divided tasks (C)</p> Signup and view all the answers

    What can hinder the efficiency of a multi-computer system?

    <p>Narrow bandwidth leading to high traffic (C)</p> Signup and view all the answers

    Which device can replace a barcode reader for inputting barcode data?

    <p>Magnetic card reader (A)</p> Signup and view all the answers

    Which device has both input and output functions?

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

    Which device is necessary for voice recognition?

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

    Which input device is used for handwriting recognition?

    <p>Graphics tablet (C)</p> Signup and view all the answers

    Which piece of equipment is required for Optical Character Recognition (OCR)?

    <p>Scanner (B)</p> Signup and view all the answers

    What input device is commonly used in kiosks?

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

    Which device utilizes biometrics for identification?

    <p>Fingerprint scanner (B)</p> Signup and view all the answers

    Which statement about digital camcorders and webcams is correct?

    <p>Digital camcorders do not require a computer but webcams do. (B)</p> Signup and view all the answers

    Which statement is incorrect regarding CRT monitors compared to LCD monitors?

    <p>CRT monitors have a smaller screen area than LCD monitors. (D)</p> Signup and view all the answers

    Which of the following is not a function of a multifunction printer?

    <p>Taking digital photos (C)</p> Signup and view all the answers

    Flashcards

    What is a Local Area Network (LAN)?

    A network that connects computers in a small, limited area like an office or building.

    What is a Wide Area Network (WAN)?

    A network that spans a large geographical area, connecting computers across cities or even countries.

    What is bandwidth?

    A way to define the maximum amount of data that can be transferred over a network connection in a given time.

    What is a client/server network?

    A type of network where one or more computers act as servers, providing resources like files and services to other computers on the network, called clients.

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    What is a firewall?

    A device used to protect a network from unauthorized access or malicious attacks.

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    Real-time System

    A computer system that processes data as soon as it is entered, without delay. Examples include ATMs and video conferencing systems. These systems need special software and hardware to ensure continuous operation and minimize downtime.

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    Parallel Processing System

    A system where multiple CPUs work together to process tasks concurrently. This allows for faster processing of complex jobs.

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    Distributed Processing System

    A system that uses multiple computers connected by a high-speed network to work together on a single tasks simultaneously. It allows for distributed processing of workloads and efficient utilization of resources.

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    Online Interactive System

    Systems that allow users to interact with a computer in real-time; typically involves communication over a network. Examples include online shopping, ticket reservation systems, and email.

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    Network Interface Card (NIC)

    A card that allows a computer to connect to a network. It acts as a bridge between the computer and the network cable.

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    Bandwidth

    The rate at which data is transferred over a network. Measured in bits per second (bps).

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    Hub

    A central point where multiple network devices connect. It broadcasts data to all connected devices.

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    Switch

    A central point where network devices connect. It can learn which devices are on the network and only send data to the intended destination.

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    Repeater

    A device that amplifies signals to ensure they travel long distances on a network without losing strength.

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    Bridge

    A device that connects two or more LANs of the same type. It helps manage data traffic between the networks.

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    Router

    A device that connects different networks. It acts as a gatekeeper for data, routing data to the correct destination.

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    Hardware sharing

    Sharing data or resources like printers across a network.

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    Specialized search engine

    A type of search engine that specializes in a specific category, such as scientific, medical, or financial information.

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    Search engine

    A software program used to find information on the web. Users submit queries, and the program returns relevant websites.

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    Spider

    A program or code that automatically crawls the web and indexes websites for use by search engines.

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    Natural language search

    A type of search engine that allows users to pose questions in natural language, rather than just using keywords.

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    Online chat

    A type of online communication that involves live, simultaneous interaction between two or more people.

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    Task Decomposition

    Dividing a large task into smaller chunks that can be processed by different computers simultaneously to achieve better performance.

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    Result Reassembly

    The process of combining the results from multiple computers to generate the final output of a task.

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    Resource Management

    Allows for efficient allocation and utilization of computing resources by distributing workload across multiple machines.

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    Performance Improvement

    Achieving faster processing speeds by utilizing the combined power of multiple computers.

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    Fault Tolerance

    The ability to continue operating even if one or more computers fail, as other computers can take over the workload.

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    Scalability

    The ability to easily scale a system by adding or removing computers based on increasing or decreasing workload demands.

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    Communication Overhead

    Communication overhead can reduce the overall performance of distributed systems, especially if the network is heavily loaded or the bandwidth is limited.

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    System Software

    Software that manages computer hardware and software resources, providing a platform for applications to run.

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    Application Software

    Software designed for specific tasks and user needs, such as word processing, image editing, or web browsing.

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    User Interface

    The interface through which users interact with software, typically through a visual display and input devices like a mouse and keyboard.

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    Point-of-Sale (POS) terminal

    A device that uses bar code reader, keyboard, card reader, and thermal printer for input and output operations used in supermarkets and chain stores.

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    Bar code reader

    An input device used in POS terminals to read bar codes and convert them into machine-readable data

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    Handwriting Recognition System

    An input device that converts handwritten characters into digital data.

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    Optical Character Recognition(OCR)

    An input device that captures images of printed text or other documents and converts them into digital data that can be edited or stored.

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    Touchscreen

    An input device that uses a touch-sensitive screen for input. It allows users to interact with a device directly, without needing a keyboard or mouse.

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    Biometric Authentication

    An input device that determines an individual's identity by analyzing their unique biological traits, examples are fingerprint scanners and iris scanners.

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    Video Projector

    A type of output device that displays images and videos on a screen; It can be LCD or DLP.

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    Multi-function printer

    A type of output device that combines several functions like printing, scanning, copying, and faxing in a single device.

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    DPI (dots per inch)

    A unit of measurement for the resolution of printed images, refers to dots per inch.

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    Laser Printer

    A type of printer that uses a laser beam to create images on a photosensitive drum, then transfers the image to paper using toner.

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    Study Notes

    Networking and Internet Basics

    • Local Area Network (LAN) connects computers within a limited area (e.g., office, building).
    • Wide Area Network (WAN) spans a large geographic area (e.g., countries).
    • LANs can be peer-to-peer (no server) or client-server (central server).
    • Peer-to-peer networks are usually cheaper and simpler to set up.
    • Client-server networks offer better security and services in larger environments.
    • WANs connect LANs and other networks.

    Key Terms

    • Access point: A device that connects devices to a network.
    • ADSL: Asymmetric Digital Subscriber Line (an internet access technology).
    • Bandwidth: The amount of data that can be transmitted over a network.
    • Bluetooth: A wireless communication technology.
    • Bridge: Connects two LANs of the same type.
    • Cable modem: A modem that uses cable television lines for internet access.
    • Client/server network: A network with a central server that provides resources for clients.
    • Coaxial cable: A type of cable, often used in TV & internet installations.
    • DSL (Digital Subscriber Line): Internet access technology used over telephone lines.
    • DSL modem: A modem that uses DSL lines for internet access.
    • Firewall: Protects a network from unauthorized access.
    • GPRS (General Packet Radio Services): Wireless data access technology.
    • Hub: A central connection point for a network.
    • Infrastructure: Underlying support structures (including cables).
    • Infra-red (IR): A wireless communication technology (uses infrared light).
    • Integrated Services Digital Network (ISDN): A digital network carrying voice and data.
    • Internet service provider (ISP): Provides access to the internet.
    • LAN (Local Area Network): Connects computers in a limited area.
    • MAC address (Media Access Control address): A unique identifier for network devices.
    • Modem: Converts digital signals to analogue signals for transmission and vice versa.
    • Microwave broadband: Internet access using microwave radio signals.
    • Network interface card (NIC): Connects a computer to a network.
    • Optical fibre cable: A high-speed cable used for internet and other data transmission.
    • Peer-to-peer (P2P) network: No central server, all workstations communicate with each other.
    • Repeater: Amplifies weak network signals.
    • Router: Connects and directs data between different networks.
    • Repeater: Amplifies signals weakened by distance.
    • Repeater: Amplifies weak network signals.
    • Router: Connects and directs data between different networks.
    • Satellite broadband: Internet access facilitated by satellites.
    • SDSL (Symmetric Digital Subscriber Line): A digital subscriber line technology.
    • Shielded twisted-pair (STP) cable: Twisted copper cable with shielding to reduce electromagnetic interference.
    • Switch: A device that connects devices to a network (more efficient than a hub).
    • Unshielded twisted-pair (UTP) cable: Twisted copper cable without shielding.
    • UTP cable: Commonly used twisted cable in networks
    • VPN (Virtual Private Network): Encrypts network traffic.
    • WAN (Wide Area Network): Connects computers in wider geographical areas.
    • Wireless Application Protocol (WAP): Access wireless devices and communications
    • Wireless fidelity (Wi-Fi): A commonly used wireless networking technology.
    • Wireless local Area Network (WLAN): Wireless network within local area.
    • Workstation: A computer connected to a network.

    Internet Access Methods

    • Dial-up: Internet access using a telephone line.
    • Broadband: High-speed internet access (e.g., cable, DSL, fibre optic).
    • Wireless internet access: Internet access via Wi-Fi, or other wireless technologies, or mobile data networks.

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    Description

    Test your knowledge on key networking concepts and real-time systems with this quiz. You'll explore various components such as hubs, switches, and the advantages of different processing systems. See how well you understand the architecture of networks and interactive systems.

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