OSI Model Quiz

Each layer on a network model trusts that the other layers will perform their tasks correctly, ensuring a seamless flow of data.

A conceptual framework that breaks down network communication into seven distinct layers, each responsible for a specific task.

The layer responsible for establishing and managing communication sessions between two devices, including error checking and data flow control.

The layer responsible for formatting and encoding data for presentation to the application layer, ensuring data is interpreted correctly by the recipient.

The layer responsible for providing a reliable connection between two applications, ensuring data is delivered accurately and in the correct order.

The layer responsible for managing the physical connections and transmission of data over the network cable, including signal encoding and physical addressing.

The layer responsible for routing data packets across the network, determining the best path and addressing networks and subnets.

The layer responsible for managing access to the physical transmission medium and providing error detection and correction for data frames.

A unique identifier assigned to each network interface card (NIC). It's used to distinguish different devices on a network.

A method of representing data using only two digits: 0 and 1.

Pulses of electricity, light, or radio waves that represent ones and zeroes, transmitting data across networks.

A device that measures and displays electrical signals, allowing you to see the waveform of data transmission.

A discrete unit of data that is transmitted across a network, containing information and data wrapped in a container.

The physical layer of the network model is responsible for transmitting data signals over the physical medium, such as cables or wireless waves.

The process of encapsulating data into a frame adds a header and trailer to the data, providing information about the data, source, and destination.

A network interface card (NIC) is responsible for creating, sending, receiving, and reading network frames. It bridges the gap between the computer and the network.

A frame containing data that is specifically addressed to a single recipient's MAC address.

A type of addressing in which data is sent to a single, specific recipient.

A frame containing data that is sent to all devices on a network.

The process of adding a frame check sequence (FCS) to a frame to detect errors during transmission.

A device that connects multiple network segments and forwards frames based on their destination MAC addresses.

A network layer that connects devices and provides error detection and correction.

The physical connection between a network device and the network cable.

A frame is like a small container that can hold data, similar to a canister holding different items. Ethernet frames can hold up to 1500 bytes of data.

When data is larger than the frame size, it is divided into smaller chunks that fit within the frame.

The NIC (Network Interface Card) is responsible for sending and receiving frames on the network.

A hub is a simple network device that simply repeats all frames it receives to all connected systems.

When a frame arrives on a network, each NIC checks if the frame is addressed to its MAC address. If not, it drops the frame.

Switches are more intelligent network devices that filter network traffic based on MAC addresses.

A Hub sends a copy of every frame to all connected devices, while a switch filters traffic and sends frames only to intended recipients.

When a frame enters a hub, it is duplicated and sent to all connected systems. Only the system with the matching MAC address will process it. The rest discard the frame.

A container used within a network to encapsulate data for transmission. It holds the actual data and information about its destination.

The process of embedding an IP packet within a frame. This is necessary for the packet to be transmitted on a physical network and ensures successful data delivery.

A device that receives packets, identifies the destination, and forwards them along the appropriate network route to reach their final destination.

The process of a router examining the IP address within a packet to determine the best path for forwarding the data to its final destination.

The mechanism for allowing data to be sent across multiple networks, passing through different types of connections and physical media (e.g., cable, DSL) while preserving the original IP packet.

The term 'IP' stands for Internet Protocol. It's a set of rules and standards governing how data is structured and delivered across the network.

Network communication involves encapsulating data within various containers (frames and packets). The frame provides the physical layer information, while the packet carries the actual data and destination details.

When a router receives a packet from another subnet, it removes the existing frame, checks the destination IP, and adds a new frame with the correct destination MAC address.

The Network Interface Card (NIC) strips off the Ethernet frame received and forwards the remaining packet to the software.

The operating system's software handles processing and converting packets into usable information like web pages, emails, or files.

The process of breaking down large data chunks into smaller packets that can be sent across a network.

The process of reassembling data packets received on a network back into the original data.

Transport protocols like TCP assign sequence numbers to data segments to ensure they are received in the correct order.

TCP segments data into smaller chunks and assigns sequence numbers for reliable delivery.

UDP datagrams do not get broken into chunks or receive sequence numbers, prioritizing speed over reliability.