Podcast
Questions and Answers
The globally connected network system facilitating communication and data services is called the ______.
The globally connected network system facilitating communication and data services is called the ______.
Internet
The individual who initiates a message is known as the ______.
The individual who initiates a message is known as the ______.
sender
The ______ is the listener, reader, or observer to whom a message is directed.
The ______ is the listener, reader, or observer to whom a message is directed.
receiver
The physical path between the transmitter and the receiver is called the ______.
The physical path between the transmitter and the receiver is called the ______.
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A standardized set of rules for formatting and processing data is referred to as a ______.
A standardized set of rules for formatting and processing data is referred to as a ______.
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The layer responsible for process to process delivery in the OSI model is the ______ layer.
The layer responsible for process to process delivery in the OSI model is the ______ layer.
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The ______ layer is responsible for moving individual bits from one device to the next in the OSI model.
The ______ layer is responsible for moving individual bits from one device to the next in the OSI model.
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A networking technology for connecting devices in a Local Area Network (LAN) is known as ______.
A networking technology for connecting devices in a Local Area Network (LAN) is known as ______.
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Guided media also known as wired media use physical ______ to transmit signals.
Guided media also known as wired media use physical ______ to transmit signals.
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The three commonly used types of guided media in computer networks are coaxial cable, twisted-pair cable, and ______.
The three commonly used types of guided media in computer networks are coaxial cable, twisted-pair cable, and ______.
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Unguided media rely on ______, microwaves, or infrared light to transmit signals through the air.
Unguided media rely on ______, microwaves, or infrared light to transmit signals through the air.
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One key ISO standard is the ______ model, which breaks down communication into seven layers.
One key ISO standard is the ______ model, which breaks down communication into seven layers.
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In a Point to Point topology, the simplest method is a way of connecting ______ nodes through a common medium.
In a Point to Point topology, the simplest method is a way of connecting ______ nodes through a common medium.
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In a Bus topology, every computer and network device is connected to a single ______.
In a Bus topology, every computer and network device is connected to a single ______.
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Mesh topology connects all nodes or devices ______ or partially to each other.
Mesh topology connects all nodes or devices ______ or partially to each other.
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In a Tree topology, there is one central node called the ‘______’, which connects to other nodes.
In a Tree topology, there is one central node called the ‘______’, which connects to other nodes.
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Study Notes
Internet
- A globally connected network system for communication and data services.
- Consists of a vast collection of public, private, business, academic, and government networks.
Communication
- Sender: Initiates a message, also known as the communicator or source.
- Receiver: Listens, reads, or observes the message.
- Transmission Medium: Physical path for data transfer between sender and receiver.
- Protocol: Standardized set of rules for formatting and processing data.
- Message: The information being conveyed, either written or spoken.
OSI Model
- Open Systems Interconnection (OSI) model has 7 layers:
Application Layer
- Provides services to the user.
- Creates and manages data.
Session Layer
- Establishes, maintains, synchronizes, and terminates interactions between sender and receiver.
- Manages connections.
Transport Layer
- Ensures reliable delivery of data from one process to another.
- Breaks data into segments.
Network Layer
- Responsible for delivering packets from source to destination.
- Packages segments into packets for routing.
Data Link Layer
- Moves frames between hops.
- Frames packets for transmission to the next device.
Physical Layer
- Transmits individual bits between devices.
- Converts frames into bits for physical transmission.
Network Types
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Ethernet: Local/private network technology.
- Includes protocol, port, cable, and computer chip.
- Traditional technology for wired local area networks (LANs) and wide area networks (WANs).
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Internet: Global/public network.
- Connects billions of computers and electronic devices.
Unique Identifiers
- OUI (Organizationally Unique Identifier): Identifies the manufacturer of network interface cards (NICs).
- MAC (Media Access Control) Address: Unique physical address assigned to a network device.
- Manufacturer Identifier: Used to identify the manufacturer of a device.
Transmission Media
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Guided Media (Wired): Uses physical cables for signal transmission.
- Twisted Pair Cable: Two insulated wires twisted together to reduce interference.
- Coaxial Cable: Central conductor surrounded by insulation and a braided shield.
- Fiber Optic Cable: Transmits data using light pulses through thin glass fibers.
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Unguided Media (Wireless): Uses radio waves, microwaves, or infrared light for transmission.
- Radio Wave: Electromagnetic waves used for wireless communication.
- Microwave: Higher frequency radio waves used for long-distance communication.
- Infrared: Electromagnetic radiation used for short-range communication.
- Satellite: Uses satellites in orbit to relay communication signals.
Network Topologies
- Arrangement of nodes, links, and devices in a computer network.
- Point-to-Point: Connects two network devices directly.
- Bus: Devices are connected to a single cable, allowing bidirectional communication.
- Ring: Devices are connected in a closed loop with unidirectional data flow.
- Star: All devices connect to a central hub, providing centralized management.
- Mesh: All devices are directly or partially connected, offering redundancy and high bandwidth.
- Tree: A hierarchical topology with a central node and branching connections.
- Hybrid: Combination of multiple basic topologies.
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Description
This quiz covers the fundamentals of the Internet, including its role as a global communication network and the essential components of effective communication. Additionally, it explores the OSI model, detailing its seven layers and their functions within data transmission. Test your knowledge on these key topics!
