Network Equipment Classification Quiz
48 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which classification of network equipment refers to devices that operate without control or programming capabilities?

  • Controlled
  • Passive
  • Active
  • Unmanageable (correct)

    • What type of communication mode allows for simultaneous transmission and reception of information?

  • Duplex (correct)
  • Half-duplex
  • Simplex
  • Sequential

    • Which of the following classifications of network equipment is based on the OSI model layers?

  • Twisted pair
  • Router (correct)
  • Wireless
  • Network adapter

    • In the classification of network equipment, what is a key feature of devices that are considered 'certified'?

    <p>They are approved through a formal validation process.</p> Signup and view all the answers

    Which type of filtering capability is defined by equipment that does not support filtering functionalities?

    <p>Without Filtering</p> Signup and view all the answers

    What describes the physical transmission medium used for wired communication?

    <p>Optical fiber</p> Signup and view all the answers

    Which network device primarily operates at the transport layer of the OSI model?

    <p>Firewall</p> Signup and view all the answers

    Which of the following modes of communication involves only one-way data transmission?

    <p>Simplex</p> Signup and view all the answers

    What effect do OSI layer 1 devices have on the collision domain?

    <p>They enlarge the collision domain.</p> Signup and view all the answers

    Which network devices contribute to a shared collision domain?

    <p>Switches and bridges</p> Signup and view all the answers

    What is the propagation delay for 10 Mbps Ethernet?

    <p>51.2 microseconds</p> Signup and view all the answers

    What does the Collision Domain Diameter measure?

    <p>The time for signal propagation between stations</p> Signup and view all the answers

    What typically happens during a belated collision?

    <p>Dropped frames may occur.</p> Signup and view all the answers

    How can collisions be eliminated when connecting to a switch port in half-duplex mode?

    <p>By operating in full-duplex mode.</p> Signup and view all the answers

    What is the purpose of an ADSL filter in telecommunications networks?

    <p>To enable simultaneous use of the same telephone line.</p> Signup and view all the answers

    At what speeds does the duration of propagation delay change to 4096 bits?

    <p>1000 Gbps</p> Signup and view all the answers

    What is the primary function of the ADSL splitter?

    <p>To separate voice and ADSL modem frequencies</p> Signup and view all the answers

    How does an ADSL modem distribute bandwidth?

    <p>Asymmetrically between outgoing and incoming traffic</p> Signup and view all the answers

    At which layer of the OSI model do repeaters operate?

    <p>Physical layer</p> Signup and view all the answers

    What happens to the network load as more computers are added when using a hub?

    <p>It increases due to increased data traversal</p> Signup and view all the answers

    What is one of the key characteristics of network hubs?

    <p>They can automatically adjust transfer rates</p> Signup and view all the answers

    Which type of repeater is designed to connect multiple devices within a network?

    <p>Multiport repeater</p> Signup and view all the answers

    What limitation does a hub have compared to a switch?

    <p>A hub broadcasts data to all ports</p> Signup and view all the answers

    How do hubs significantly impact network performance as device counts rise?

    <p>They can lead to network congestion</p> Signup and view all the answers

    What is the primary characteristic of half-duplex mode?

    <p>Devices can transmit or receive, but not both at the same time.</p> Signup and view all the answers

    Which statement accurately describes simplex communication?

    <p>It permits continuous transmission in one direction only.</p> Signup and view all the answers

    In which situation might simultaneous reception and transmission in half-duplex mode lead to collisions?

    <p>When the same circuit is utilized for both sending and receiving.</p> Signup and view all the answers

    What defines a collision domain in an Ethernet network?

    <p>It is the segment where nodes can potentially collide while accessing the shared medium.</p> Signup and view all the answers

    How does communication speed in half-duplex mode compare to duplex mode?

    <p>It is half the maximum capacity of duplex mode.</p> Signup and view all the answers

    Which of the following correctly describes duplex communication?

    <p>It permits simultaneous, two-way communication.</p> Signup and view all the answers

    What happens during simultaneous transmission attempts in a collision domain?

    <p>Collisions occur, which may degrade network performance.</p> Signup and view all the answers

    Which communication mode allows bidirectional communication with time separation?

    <p>Half-duplex mode</p> Signup and view all the answers

    What is the main benefit of using a Crypto Gateway in a VPN?

    <p>It provides confidentiality and integrity of IP packet flows.</p> Signup and view all the answers

    Which of the following is NOT a key functionality of a Crypto Gateway?

    <p>Provides a backup for data recovery.</p> Signup and view all the answers

    Which protocol does a Crypto Gateway operate on for information protection?

    <p>IPSec</p> Signup and view all the answers

    What is a primary characteristic of twisted pair cables?

    <p>They consist of multiple pairs of insulated conductors twisted together.</p> Signup and view all the answers

    What is a disadvantage of using twisted pair cables for networking?

    <p>They are prone to high signal attenuation over long distances.</p> Signup and view all the answers

    Which feature of fiber optic communication contributes to long-distance transmission?

    <p>Low attenuation of light.</p> Signup and view all the answers

    Why is fiber optic communication considered secure against unauthorized access?

    <p>It is difficult to physically intercept without detection.</p> Signup and view all the answers

    Which of the following statements is true regarding the cost of twisted pair cable?

    <p>It is cost-effective for constructing wired local networks.</p> Signup and view all the answers

    Which of the following sectors widely adopts fiber optic communication?

    <p>Computer systems</p> Signup and view all the answers

    What is the primary function of a firewall in a network?

    <p>To filter and control network traffic</p> Signup and view all the answers

    What distinguishes an Intrusion Prevention System (IPS) from an Intrusion Detection System (IDS)?

    <p>IPS actively prevents attacks, while IDS primarily tracks them.</p> Signup and view all the answers

    Coaxial cable is primarily used for which type of signal transmission?

    <p>Radio frequency electrical signals</p> Signup and view all the answers

    What is a notable feature of fiber optic communication lines?

    <p>Increasing total length connecting continents</p> Signup and view all the answers

    What component does coaxial cable have that is specifically designed to prevent interference?

    <p>Surrounding screen</p> Signup and view all the answers

    Which of the following best describes the role of an Intrusion Detection System (IDS)?

    <p>Identifies unauthorized access attempts</p> Signup and view all the answers

    Who invented and patented the coaxial cable?

    <p>Oliver Heaviside</p> Signup and view all the answers

    Study Notes

    Network Hardware Overview

    • Network hardware encompasses various devices like switches, hubs, network adapters, access points, twisted pair, optical fiber, splitters, patch cords, modems, routers, repeaters, firewalls, IDS/IPS, and patch panels.

    Network Equipment Classification

    • By power consumption: Active (devices requiring power to operate) and Passive (devices not requiring power, like patch cords).
    • By control capability: Controlled (programmable, requiring configuration) and Unmanageable (pre-configured, no user control).
    • By OSI model layers: Categorized by the layer of the OSI model where the equipment operates (Application, Presentation, Session, Transport, Network, Data Link, Physical).

    Communication Modes

    • Duplex: Two-way communication simultaneously (e.g., modems, network cards).
    • Half-duplex: Two-way communication, but one direction at a time (e.g., hubs, repeaters).
    • Simplex: One-way communication in one direction only (e.g., some communication protocols).

    Collision Domain

    • A portion of the network where nodes contend for a shared transmission medium. Nodes within a collision domain can collide with each other, and collisions increase as more nodes are added.
    • Devices at OSI layer 1 (like hubs, repeaters) enlarge collision domains.
    • Devices on OSI layer 2 (like bridges, switches) can help segregate collision domains.
    • Propagation Delay: The time taken for transmission of a segment.
    • Belated Collision: Collision occurring after the propagation delay.
    • Collision Domain Diameter: Maximum signal propagation delay between any two stations.

    Splitter

    • An ADSL filter that separates voice and data frequencies on the same telephone line.

    Repeater

    • Extends network reach by retransmitting electrical signals, acting as a physical layer extender.
    • Single-port and multi-port repeaters are two types.

    Hub

    • Functions as a repeater in a network, rebroadcasting signals to all active ports except the one from which the signal originated.
    • Hubs have a significantly reduced lifespan compared to the other networking components.
    • Hubs significantly increase network load as more computers are connected.

    Bridge

    • Operates at the Data Link layer (layer 2) of the OSI model to unify network segments into a single network entity.
    • Examines MAC addresses to forward frames.
    • Frames intended for a different subnet are not broadcasted.

    Types of Bridges

    • Transparent Bridges: Amalgamate networks with shared protocols at the channel and physical layers.
    • Translating Bridges: Interconnect networks employing different protocols.
    • Encapsulating Bridges: Connect networks using identical channel and physical layer protocols but operate with different protocols in the network.

    Bridge Functions

    • Limits collision domains.
    • Delays frames addressed to a node in the sender's segment.
    • Restricts the propagation of erroneous frames.
    • Handles frames with errors or unexpected sizes to mitigate propagation of faulty data within the network.

    Switch

    • Operates at the data link layer in the OSI model.
    • Interconnects multiple nodes/across segments
    • Manages traffic to designated recipients and not broadcast frames unnecessarily to avoid bottlenecks.
    • Switches are categorized as managed or unmanaged.
    • Advanced switches manage network layer (Layer 3) functions.

    Switch Functions

    • Buffering: Enables temporary frame storage for subsequent transmission.

    • Congestion Handling: Uses buffering to manage congestion on destination ports.

    • Memory Buffer Methods:

    • Port Buffering, storing frames in queues tied to ports.

    • Shared Memory Buffering, storing frames in a shared memory across ports.

    • Port Mapping: Assigns destinations based on the host interface for targeted frame transmission.

    Router

    • A specialized computer that forwards packets between diverse network segments based on rules.
    • Functions at the network layer (OSI layer 3).
    • Integrates heterogeneous networks, links them together.
    • Manages traffic by segregating into collision domains, reducing traffic bottlenecks.
    • Routing Table Compilation Methods
    • Static Routing: Manual (administrator intervention required), stable, but requiring hardware resource maintenance per segment change
    • Dynamic Routing: Automatic updates based on protocols, allows efficient optimization based on node/channel/delay criteria

    Repeater, Switch, and Router Comparison

    • Repater, switch, and router function at different layers of the OSI model.
    • A repeater works at the physical layer, amplifying and regenerating signals.
    • A switch works at the data link layer, forwarding data frames based on MAC addresses.
    • A router works at the network layer, forwarding data packets based on IP addresses and routing protocols.

    Switching

    • Functions to connect network subscribers and involves multiple methods to manage traffic that may result in factors influencing latency and transmission reliability.
    • Three categories of switching mechanisms:
    • Store and Forward: Reads entire frame, checks for errors, then forwards the frame using the selected port.
    • Cut Through: Reads the destination MAC address, then forwards the frame if the destination is known before switching, but lacks error detection ability, thereby reducing latency.
    • Fragment Free/Hybrid: A modified cut-through method addressing the failings of cut through when dealing with collision fragments, finding a balance between reducing latency and providing error-checking.

    Symmetry and Asymmetry in Switching

    • Symmetric Switch: Connections between ports have identical bandwidth capacities.
    • Asymmetric Switch: Connections between ports have varying bandwidth capacities.
    • Asymmetrical Switching: Applied when there is heavy client server interaction (e.g. high volume of client data requests).

    Network Adapter

    • Additional devices allowing for computer interaction with other network devices.
    • Typically in Internal (Domestic), External, or Integrated versions.

    Access Point (WAP)

    • Wireless base station facilitating access, establishing a new wireless network, or acting as a base for user access to a wired network.
    • Primarily used to grant access to mobile devices to a fixed network.
    • Examples: Wi-Fi repeaters.
    • Wi-Fi (IEEE 802.11) and Bluetooth utilize a WAP.

    Gateway

    • A hardware and software system that provides cryptographic protection for traffic across a network, safeguarding information security, and ensuring confidentiality (e.g., during VPN connection establishment).

    IDS/IPS

    • Intrusion Detection System (IDS): Software or hardware tools that identify unauthorized access to or control of computer systems.
    • Intrusion Prevention System (IPS): Software or hardware tools that automatically defend against intrusions. IPS extends the capabilities of IDS, actively preventing intrusions rather than just detecting them.

    Twisted Pair Cable

    • A communication cable comprised of twisted pairs of insulated conductors.
    • Often employed in wired local area networks (LANs).
    • Various types exist with slightly varying transmission standards.

    Fiber Optic Communication

    • Utilizes electromagnetic radiation across an optical cable for data transmission.
    • Offers high throughput.
    • Resistant to electromagnetic interference.
    • Suitable for long-distance transmission.
    • Utilizes fiber optic cables.

    Coaxial Cable

    • A communication cable with a central conductor surrounded by a larger outer or shielding conductor, separated by an insulating material.
    • Frequently employed in early data transmission technologies.
    • Suitable for radio frequency electrical signals.

    Firewall

    • A component of a computer network (software or hardware) that controls and filters network traffic based on predetermined rules.
    • Manages incoming and outgoing data while restricting unauthorized access.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Network Equipments Lecture 3 PDF

    Description

    Test your knowledge on the classification of network equipment and communication modes. This quiz covers essential concepts such as OSI model layers, certified devices, and various types of data transmission. Challenge yourself with questions designed to enhance your understanding of network fundamentals.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser