Questions and Answers
Which of the following is an example of a network layer (layer 3) protocol?
What's the difference between a client and a server?
A client requests data, a server responds to that request.
Which of the following are examples of layers of our five-layer network model?
What accurately describes the differences between a hub and a switch?
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What does LAN stand for?
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What's a router?
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What is the type of modulation used by twisted pair cable computer networks known as?
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What's the difference between full and half duplex?
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How many octets are there in a MAC address?
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What address is used for Ethernet broadcasts?
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What is a cyclical redundancy check?
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When data can flow across a cable in both directions, this is known as _____ communication.
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The transmission method that sends data to every device on a LAN is known as a _____ transmission.
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Something that requests data from a server is known as a ____.
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When an electrical pulse on one wire is accidentally detected on another nearby wire, this is known as _____.
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A defined set of standards that computers must follow in order to communicate properly is known as a _____.
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What is the fifth layer of the Transmission Control Protocol/Internet Protocol (TCP/IP) model?
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What type of cable communicates binary data by changing the voltage between two ranges?
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What type of network segment is being used when multiple systems try to send data at the same time?
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What device forwards data and operates at layer three of the Transmission Control Protocol/Internet Protocol (TCP/IP) model?
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What process sends ones and zeroes across network cables?
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Select the device that will have the most network ports.
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Where will you look for the manufacturer of a network interface?
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What immediately follows the Start Frame Delimiter in an ethernet frame?
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Study Notes
Networking Protocols
- IP (Internet Protocol) is the primary network layer (Layer 3) protocol used for routing data between devices.
- A defined set of standards, known as protocols, enables communication between different computers.
Client and Server
- Clients request data from servers, which respond to those requests, facilitating client-server architecture.
Network Model Layers
- Five-layer network model includes:
- Transport layer
- Application layer
- Physical layer
Hub vs. Switch
- Hubs operate at the physical layer, resulting in larger collision domains.
- Switches function at the data link layer, remembering connected devices on each interface to reduce collisions.
Local Area Network (LAN)
- LAN stands for Local Area Network, representing a network that connects devices in a limited geographical area.
Routers
- Routers connect separate networks and forward data between them, functioning at Layer 3 of the TCP/IP model.
Modulation in Cables
- Line coding is the modulation technique used in twisted pair cables to represent binary data (ones and zeros).
Duplex Communication
- Half duplex allows two-way communication but restricts to one direction at a time, while full duplex allows simultaneous communication in both directions.
MAC Address
- A MAC address is a 48-bit identifier comprised of 6 octets used to uniquely identify devices on a network.
Ethernet Broadcasts
- The address FF:FF:FF:FF:FF:FF is designated for Ethernet broadcast traffic, sending data to all devices on a network.
Data Integrity
- A cyclical redundancy check (CRC) is a method used to detect data corruption during transmission.
Transmission Types
- Duplex communication refers to the capability of data flow in both directions.
- Broadcast transmissions communicate data to every device on a Local Area Network (LAN).
Crosstalk
- Crosstalk occurs when electrical pulses from one wire are indetectably received on another wire nearby, often minimized by twisted wire configurations.
TCP/IP Model
- The application layer is the fifth layer of the TCP/IP model, responsible for managing application-specific protocols.
Data Transmission
- Copper cables employ voltage changes between two ranges to transmit binary data.
Collision Domains
- Collision domains are segments of a network where data transmission interference occurs when multiple devices send data simultaneously.
Layer 3 Devices
- Routers operate at Layer 3 of the TCP/IP model, efficiently forwarding data across independent networks.
Data Modulation
- Modulation is the process of converting binary data (ones and zeros) for transmission across network cables.
Switches
- Switches typically possess the most network ports, as their primary function is to interconnect numerous devices in a network.
MAC Address and Manufacturer Identification
- The first three octets of a MAC address represent the Organizationally Unique Identifier (OUI), which identifies the hardware manufacturer.
Ethernet Frame Structure
- Following the Start Frame Delimiter in an Ethernet frame, the destination MAC address is positioned for addressing the intended recipient.
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Description
Test your knowledge of fundamental concepts in computer networking! This quiz covers various aspects including network layer protocols, the distinction between client and server roles, and layers of the network model. Prepare to enhance your understanding of how networks function.
