Configurations & Network Topogy Flashcards
Process of setting up the policies, controls and data
flows that allow devices and systems to communicate
across a computing network.
Network configuration
It comprises all the physical and virtual hardware and software components in a network and the protocols that dictate how data moves between them
Network configuration
What are the type of network configuration?
Scale & topology
The geographical range of a network’s components and devices
Scale
The physical and logical arrangement of nodes and connections in a network.
Topology
Have a small range—typically under 30 feet—and are meant for peripheral devices used by an individual.
Personal area network (PAN)
Private computer networks that allow specific users to have unrestricted access to the same system connection at a central location, typically within one mile and often inside one building.
Local area network (LANs)
network-aware operating systems on user devices can share
resources and devices (printers and scanners, for example).
LANs
can be linked to local area networks (LANs) and other higher-level network types that use a single device as a gateway (connecting a Bluetooth controller to a gaming console, for instance).
PANs
configurations allow users to move freely around a coverage area without the hassle of transporting or staying connected to ethernet wires.
Wireless local area networks (WLANs)
fixed broadband access that uses radio waves instead of cables
Fixed wireless
portable wireless also called?
Mobile hotspots
enables data transmission by using infrared beams instead of wires
Infrared wireless
provides an encrypted connection that hides data packets while users are connected to a public network (such as the internet)
Virtual private area network (VPN)
tunnel between connected devices, encapsulating and encrypting data as it traverses the network to keep sensitive information (such as IP addresses, browsing history, privileged correspondence and logistics) from being revealed online.
VPNs
known as medium-sized networks—cover more area than LANs but are less extensive than wide area networks
Metropolitan area networks (MANs)
Typically, they comprise multiple LANs linked together by using point-to-point high-capacity backbone technology, which serves as a primary connection pathway between network devices.
MANs
can cover several buildings or entire cities, as is the case with DSL and cable TV networks, which use common local and regional resources to connect devices on the network.
MANs
What is DSL?
Digital subscriber line
can be either point-to-point (where devices send data to each other over a private connection) or packet-switched networks (where data is broken into short messages, or “packets” and sent piecemeal) over shared circuits (can take various paths).
WANs
companies address these priorities. It’s primary objective is to
facilitate large data transfers between different storage devices and between storage devices and the computer network.
Storage area network (SANs)
the geometric representation of the relationship of the links and the linking devices (Nodes) in a Network
Topology
refers to the specific configuration and structure of the connections between the Links and the Nodes. Two or more devices connect to a Link and two or more Links form a _____
Topology
each device is connected to every
other device on the network through a dedicated
point-to-point link.
Mesh Topology
each device in the network is connected to a central device called hub. If one device wants to send data to other device, it has to first send the data to hub and then the hub transmit that data to the designated device.
Star Topology
there is a main cable and all the devices are connected to this main cable. Since all the data is transmitted over the main cable, there is a limit of drop lines and the distance a main cable can have.
Bus Topology
each device is connected with the two devices on either side of it. There are two dedicated point to point links a device has with the devices on the either side of it.
Ring Topology
This topology has a repeater, if the received data is intended for other device then repeater forwards this data until the intended device receives it.
Ring Topology
Combination of two or more topology
Hybrid Topology
What are the relationship networks
Peer-to-Peer & Primary-Secondary
Devices share the link equally a group of computers are linked together with equal permissions and responsibilities for processing data
Peer-to-peer
“Server-Client” Relationship
Primary-Secondary
One device controls traffic and the others must transmit through it all computers linked to Server which then stores and shares files for all clients
Primary-Secondary
What is Mesh Topology?
Each device is connected to every other device on the network through a dedicated point-to-point link.
What are the advantages of Mesh Topology?
- No data traffic issues due to dedicated links.
- Reliable and robust; failure of one link doesn’t affect others.
- Secure due to point-to-point links.
- Easy fault detection.
What are the disadvantages of Mesh Topology?
- Tedious amount of wires required.
- Huge number of I/O ports needed.
- Scalability issues with large numbers of devices.
What is Star Topology?
Each device is connected to a central device called a hub, requiring communication through the hub.
What are the advantages of Star Topology?
- Less expensive due to fewer I/O ports.
- Easier to install.
- Less cabling required.
- Robust; if one link fails, others work.
- Easy fault detection.
What are the disadvantages of Star Topology?
- If the hub fails, everything goes down.
- Hub requires more resources and maintenance.
What is Bus Topology?
A main cable connects all devices through drop lines, with a device called a tap connecting the drop line to the main cable.
What are the advantages of Bus Topology?
- Easy installation with a backbone cable.
- Less cabling required than Mesh and Star Topologies.
What are the disadvantages of Bus Topology?
- Difficulty in fault detection.
- Not scalable due to a limit on nodes connected.
What is Ring Topology?
Each device is connected to the two devices on either side, with two dedicated point-to-point links.
What are the advantages of Ring Topology?
- Easy to install.
- Easier management for adding/removing devices.
What are the disadvantages of Ring Topology?
- A link failure can fail the entire network.
- Data traffic issues due to circulation in a ring.
What is Hybrid Topology?
A combination of two or more topologies.
What are the advantages of Hybrid Topology?
- Choose topology based on requirements.
- Scalable by connecting other networks.
What are the disadvantages of Hybrid Topology?
- Difficult fault detection.
- Difficult installation.
- Complex design leading to high maintenance costs.
