Explaining Network Toplogies And Types Flashcards
Administration paradigm where some host machines are designated as providing server and services and other machines are designated as client devices that only consume server services.
Client-Server
Administration paradigm whereby any computer device may be configured to operate as both server and client.
Peer to peer
Scope defining a network with direct communication between two or more buildings within the same overall area
Campus area network (CAN)
Facility dedicated to the provisioning of reliable power, environmental controls, and network fabric to server computers
Data centers
A network using wireless radio communications based on some variant of the 802.11 standard series
Wireless local area networks (WLAN)
A class of network that covers the area of a city (that is no more than tens of kilometers). It is larger than a LAN but smaller than a WAN but it can operate at speeds that are comparable with LANs
Metropolitan area network (MAN)
Close range of networking (usually based on Bluetooth or NFC) allowing communications between personal devices such as smartphones laptops and printers/peripheral devices
Personal area network(PAN)
Topology where two nodes have a dedicated connection to one another
Point to point
Topology where each node is connected to a central point, typically a switch or router. The central pt mediates communications between the attached nodes. When a device such as a hub receives signals from a node and repeats the signal to all other connected nodes. Therefore the bandwidth is still shared between all nodes. When a device such as a switch is used, pt to pt links are established between each node as required. The circuit established between the two nodes can sue the full bandwidth capacity of the network media.
Star topology
Network connection between multiple virtual private clouds where one virtual private cloud (VPC) acts as a hub and the other VPCs are peered with it but not with each other.
Hub and spoke
A topology often used in WANs where each device has (in theory) a pt to pt connection with every other device (fully connected); in practice only the more important devices are directly interconnected (partial mesh).
Mesh topology
Topology where all of the computers are connected in a circle. The ring comprises a series of pt to pt links between each device. Signals pass form device to device in a single direction with the signal regenerated at each device.
Ring topology
A shared access media where all nodes attach directly to a single cable segment.
Bus topology
A network that uses a combination of physical or logical topologies. In practice most networks use hybrid topologies. For example, modern types of Ethernet are physically wired as stars but logically operate as buses.
Hybrid topology
Paradigm to simplify network design by separating switch and router functionality and placement into three tiers each with a separate role, performance requirements and physical topology
Three-tiered hierarchy
Lowest tier in a hierarchical network topology acting as the attachment point for end systems.
Access or edge layer
Intermediate tier in a hierarchical network topology providing interconnections between the access layer and the corr
Distribution or aggregation layer
Type of processor designed to perform a specific function such as switching
Application specific integrated circuit (ASIC)
Highest tier in a hierarchical network topology providing interconnections between blocks
Core layer
Protocol that prevents layer 2 network loops by dynamically blocking switch ports as needed
Spanning tree protocol (STP)
Troubleshooting issue where layer 2 frames are forwarded between switches or bridges in an endless loop
Switching loop
Traffic that is recirculated and amplified by loops in a switching topology causing network slowdowns and crashing switches
Broadcast storm
Backbone link established between switches and routers to transport frames for multiple virtual LANs (VLANs)
Trunks
Trunking protocols enable switches to exchange data about VLAN configurations. The 802.1Q protocol is often used to tag frames destined for different VLANs across trunk links
802.1Q
On a switch with VLANs configured a port with an end station host connected operates in untagged mode (access port). A tagged port will normally be part of a trunk link.
Port tagging
Feature of VoIP handsets and switches to segregate data and voice traffic while using a single network wall port to attach the handset and the computer. Also called voice virtual local area network (voice VLAN)
Voice or auxiliary VLAN
