What are bridges and what are the advantages of bridge over hub?
Comparison ChartBasis for comparisonHubBridgeBasicsUsed to connect a number of devices.Facilitates in the segmentation of the larger network.TypesActive and PassiveTransparent, translational and source route.Data filterationNot performedConductedUsesMultiple portsSingle incoming and outgoing port1 more row
What is a disadvantage of beam bridges?
Disadvantages of beam bridges: Can be expensive, even for fairly short spans. A cheap material for beam bridges is concrete. Very expensive for long spans, because piers have to be built. It is not always possible to build support piers.
What is the advantage and disadvantage of arch bridge?
It can sometimes be too flexible. Arch bridges, like any other span, are built to withstand a certain level of flexing and movement from wind impacts, weather incidents, and higher levels of traffic. That feature improves its durability, but it is an advantage with finite resources.
What is the main difference between hub and bridge?
The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2. Hubs broadcast incoming traffic on all ports, whereas bridges and switches only route traffic towards their addressed destinations.
What is the main disadvantage of continuous bridges?
Continuous bridges, on the other-hand, are more economical but the disadvantage of these types of bridges is their lack of simplicity in the design procedure. These structures are statically indeterminate and therefore, the structural analysis is very much laborious specially when it involves moving loads.
What is good about beam bridge?
The design of a beam bridge is considered to be the most affordable of any bridge design that is currently in use. For areas that are low on resources, but require a bridge, this design is an effective option to use. On smaller spans, the bridge can be as simple as two beams with a deck built across it.
What layer is a router?
network layer Layer 3, the network layer, is most commonly known as the layer where routing takes place. A routers main job is to get packets from one network to another. Layer 3 protocols and technologies allow for network-to-network communications.
What are the advantages of continuous bridges?
The advantages in favour of continuous bridges are: (iii) Require less number of expansion joints due to which both the initial cost and the maintenance cost become less. The riding quality over the bridge is thus improved. (iv) Reduces depth at mid-span due to which vertical clearance or headroom is increased.
What are the strengths and weaknesses of the beam bridge?
Advantages & Disadvantages of a Beam BridgeBeam bridges may be costly even for rather short spans, since expensive steel is required as a construction material. When long spans are required to be covered, beam bridges are extremely expensive due to the piers required for holding the long beams. •26 Feb 2010
Why is a beam bridge weak?
The weakness of the beam bridge design is that it does not offer any weight transfer as traffic crosses on the top of the deck. If it should receive a weight that is consistent in its placement on a specific area of the bridge, then the support mechanisms can begin to buckle.
What is the biggest disadvantage of an arch bridge?
List of the Disadvantages of Arch BridgesIt offers a finite span length to use. It is a time-consuming project to complete. It is a structure which requires careful maintenance. It is a bridge option that cannot be built in some locations. It requires more side support to complete a successful span. •23 Feb 2019