Networking Hardware Overview
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 type of PoE can provide up to 73 watts of power to a Type 4 device?

  • 802.3af
  • 802.3at
  • 802.3bt (correct)
  • None of the above

    • In the context of PoE, what is the purpose of a power injector?

  • To provide power to a device that requires PoE but is connected to a non-PoE switch. (correct)
  • To terminate a fiber connection and convert the light signals into electrical signals.
  • To virtualize network hardware and enable software-defined networking.
  • To convert a coaxial cable signal into an electrical signal for a network.

    • Which of the following is NOT a crucial component for using PoE successfully?

  • A device that utilizes a coaxial cable connection. (correct)
  • A power device that utilizes the data and power from the Ethernet cable.
  • A network cable that supports the required power level.
  • A switch that supports PoE.

    • What is the primary function of a DSL modem?

    <p>To convert a signal from a traditional phone line into an electrical signal for the network. (C)</p> Signup and view all the answers

    What does the acronym ONT stand for?

    <p>Optical Network Terminal (B)</p> Signup and view all the answers

    Which of the following is a key concept associated with SDN?

    <p>Virtualization of network hardware and control via software. (A)</p> Signup and view all the answers

    A cable modem is typically used to connect to which type of internet connection?

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

    Which of the following technologies allows network devices to draw up to 25 watts of power?

    <p>802.3at (B)</p> Signup and view all the answers

    What is the recommended cable type for higher power PoE implementations?

    <p>Cat 6 (B)</p> Signup and view all the answers

    Which of the following is NOT a common network device that can benefit from PoE?

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

    What type of connection does a wireless NIC use to connect to a network?

    <p>Radio frequency waves (A)</p> Signup and view all the answers

    Which of the following statements best describes a hub?

    <p>It operates in broadcast mode, creating a single collision domain. (C)</p> Signup and view all the answers

    What is a key feature of managed switches compared to unmanaged switches?

    <p>They provide network management functionalities. (D)</p> Signup and view all the answers

    What function is primarily associated with routers in a network?

    <p>They connect different networks and direct traffic between them. (C)</p> Signup and view all the answers

    Which technology uses the 2.4 GHz and 5 GHz ranges for data transmission?

    <p>Wireless access points (C)</p> Signup and view all the answers

    In what scenario is a patch panel typically used in networking?

    <p>To manage and organize multiple incoming and outgoing network connections. (D)</p> Signup and view all the answers

    What type of NIC relies on Cat 5 cabling?

    <p>Wired copper NIC (D)</p> Signup and view all the answers

    Which of the following best describes a digital subscriber line (DSL) modem?

    <p>It enables internet access over standard telephone lines. (A)</p> Signup and view all the answers

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

    <p>To connect two different networks and forward data based on IP addresses (D)</p> Signup and view all the answers

    What is a key feature of a patch panel?

    <p>It simplifies the connection of network jacks to a centralized location (D)</p> Signup and view all the answers

    Which type of addresses can routers rely on for forwarding decisions?

    <p>Internet Protocol (IP) addresses, either version 4 or 6 (D)</p> Signup and view all the answers

    What is the main advantage of using a firewall in a network?

    <p>To scan and block traffic entering or leaving the network based on configured rules (A)</p> Signup and view all the answers

    In a small office environment, what commonly combines several functions into one device?

    <p>A router, modem, and wireless access point (B)</p> Signup and view all the answers

    What happens if a port on a switch is damaged?

    <p>The entire switch must be replaced due to the damage (D)</p> Signup and view all the answers

    What is the purpose of Power over Ethernet (PoE)?

    <p>To supply electrical power and data connectivity through a single cable (C)</p> Signup and view all the answers

    Which Power over Ethernet standard allows the least amount of power to be drawn?

    <p>802.3af (B)</p> Signup and view all the answers

    What role does a unified threat management (UTM) device play in a network?

    <p>It combines a firewall with additional security features like spam guards and antivirus (A)</p> Signup and view all the answers

    How does a patch panel reduce costs in network management?

    <p>By allowing easy replacement of damaged ports at a lower cost compared to a switch (C)</p> Signup and view all the answers

    In a small office/home office setup, what typically connects to both the internet service provider and the local area network?

    <p>A router that manages the connections (A)</p> Signup and view all the answers

    What is the primary task of access control lists configured in a firewall?

    <p>To allow or block specific types of network traffic (A)</p> Signup and view all the answers

    Why might an organization prefer to use Power over Ethernet technology?

    <p>It eliminates the need for additional wiring for power sources (B)</p> Signup and view all the answers

    What device acts as a boundary security feature for a network?

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

    Which of the following is NOT a problem associated with traditional hubs in networking?

    <p>Hubs can be easily configured to prioritize traffic based on device or application. (C)</p> Signup and view all the answers

    Which of the following statements BEST describes the difference between a hub and a switch in terms of data transmission?

    <p>Hubs transmit data to all connected devices, while switches direct data only to the intended recipient. (A)</p> Signup and view all the answers

    Which of the following is a characteristic of a managed switch that distinguishes it from an unmanaged switch?

    <p>Managed switches allow for advanced configuration options, such as VLAN creation and MAC filtering. (A)</p> Signup and view all the answers

    What is the primary function of a wireless access point in a network?

    <p>To convert radio frequency signals into electrical signals for transmission over wired connections. (C)</p> Signup and view all the answers

    Which of the following statements is TRUE regarding the use of MAC addresses in networking?

    <p>MAC addresses are used to uniquely identify devices on a network and are assigned by the network administrator. (B)</p> Signup and view all the answers

    Consider a scenario where a traditional hub is used to connect multiple computers. If two computers attempt to transmit data at the same time, what happens?

    <p>The hub broadcasts the data to all connected computers, resulting in a collision. (D)</p> Signup and view all the answers

    In a network environment, which of the following BEST illustrates the concept of a collision domain?

    <p>The area within a network where all devices can hear each other's transmissions. (B)</p> Signup and view all the answers

    What is the PRIMARY advantage of using a switch instead of a hub in a network?

    <p>Switches eliminate collisions and improve network performance by directing data only to the intended recipient. (D)</p> Signup and view all the answers

    Which of the following is NOT a benefit of using a managed switch in a network?

    <p>Simplified setup and configuration, requiring minimal technical expertise. (B)</p> Signup and view all the answers

    Which of the following scenarios could be BEST addressed by using a managed switch instead of an unmanaged switch?

    <p>A large corporate network with segmented traffic and security considerations. (B)</p> Signup and view all the answers

    Which of the following statements BEST describes the principle behind virtual local area networks (VLANs)?

    <p>VLANs enable devices on the same physical network to be logically grouped and separated, enhancing security and traffic management. (A)</p> Signup and view all the answers

    What is the PRIMARY purpose of using MAC filtering on a network switch?

    <p>To restrict access to the network to specific devices based on their MAC addresses. (C)</p> Signup and view all the answers

    How does a network switch determine the destination port for a specific packet of data?

    <p>Based on the MAC address of the destination device. (D)</p> Signup and view all the answers

    Which of the following statements accurately describes the role of the MAC address in a networked environment?

    <p>It is a unique identifier assigned to each network interface card (NIC) in a device. (A)</p> Signup and view all the answers

    Which of the following network devices is MOST similar in functionality to a traditional hub?

    <p>A wireless access point (A)</p> Signup and view all the answers

    Which of the following statements BEST highlights the primary difference between an unmanaged switch and a managed switch?

    <p>Unmanaged switches lack advanced security features, while managed switches offer robust security controls. (B)</p> Signup and view all the answers

    Study Notes

    Networking Hardware

    • Network Interface Cards (NICs): Provide Ethernet connection to the network.
      • Can be integrated into motherboard, added as expansion card, or external USB.
      • Wired NICs use copper cabling (Cat 5 or above) or fiber optic cable.
      • Wireless NICs connect to access points via Wi-Fi (2.4 GHz to 5 GHz).

    Hubs

    • Older networking technology; typically 4-48 ports.
    • Connects multiple devices—each to a single port.
    • Wired, using RJ45 connectors, and 10/100 Mbps speeds.
    • Collision domain: All devices attached share a single communication channel.
    • Broadcast mode: Hub transmits all data to every connected device, resulting in potential collisions when multiple devices transmit at once.
    • Collision resolution: If a collision occurs devices wait a random time before retransmitting. This can slow down network performance, especially with a larger number of devices.
    • Limited security: Every device receives all sent data regardless of destination.

    Switches

    • Smart hubs that remember which device is on which port.
    • Connects multiple devices (similar port range to hubs).
    • Improved security and performance. Switches only transmit data to the intended device. This prevents collisions and increases speeds by allowing multiple devices to transmit simultaneously.

    Unmanaged vs Managed Switches

    • Unmanaged switches: Simple setup, plug-and-play; used in small networks.
    • Managed switches: Configurable settings (e.g., 802.1X, MAC filtering, VLANs) for increased security and management in larger networks.

    Wireless Access Points (WAPs)

    • Extend wired network to wireless devices.
    • Act as media converters, translating radio frequency signals to electrical signals usable by wired network.
    • Allow wireless devices to access network resources.

    Routers

    • Connect different networks.
    • Make forwarding decisions based on IP addresses (IPv4 or IPv6).
    • Common use: Connect local area network (LAN) to internet via Internet Service Provider (ISP).

    Firewalls

    • Security device; filters network traffic using access control lists.
    • Blocks, allows, or drops traffic based on rules.
    • Often combined with other security features (e.g., UTM).

    Patch Panels

    • Centralizes network cabling, from wall jacks to switches.
    • Lower cost and increased supportability compared to directly connecting to switches.
    • Patch cables connect to ports on the panel to the switch.

    Power over Ethernet (PoE)

    • Delivers power over ethernet cables–reducing the need for separate power outlets for some devices.
    • Variants: 802.3af (13W), 802.3at (25W), 802.3bt (up to 73W)
    • Requires compatible PoE switch, cable, and powered devices.
    • Power injector: If a non-PoE switch is used, a power injector can supply power to the device.

    Cable Modems

    • Convert coaxial cable signals to electrical signals usable on the network.

    DSL Modems

    • Convert phone line signals to electrical signals usable on the network.

    Optical Network Terminals (ONTs)

    • Convert incoming fiber optic signals to electrical signals for a network, often connected to a router or gateway.

    Software Defined Networking (SDN)

    • Virtualizes network hardware (routers, switches, firewalls) via software.
    • Separates layers of network operations for software control.

    Studying That Suits You

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

    Quiz Team

    Description

    This quiz covers essential topics related to networking hardware, including Network Interface Cards (NICs) and hubs. Learn about their functionalities, types, and the impact of hubs on network performance. Test your knowledge on connecting devices, data transmission, and network security.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser