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Do switches and routers need MAC addresses?

yes each and every device in a network will have unique mac address.


Sophisticated networks generally use which of the following hardware devices to ease the flow of data packets throughout the network?

Modern networks used two devices for the data packets within the network will flow easily. The two devices are the routers and switches.


Physical layer in OSI model?

The physical layer is layer 1. It comprises the hardware (routers, repeaters, hubs, switches, etc.) that are used to form the physical basis of a network. They receive, process, and transmit raw electric (or optical) signals, rather than logical data packets.


What is one feature that distinguishes routers from Layer 2 switches?

Routers support a variety of interface types. Switches typically support Ethernet interfaces.


Do routers need MAC addresses?

yes they do.


What are the consequences of using MAC addresses for routing in network layer routers?

Routers don't use MAC addresses for routing. They use IP address.


Brouters combine the characteristics of switches and routers?

Yes


Do Brouters combine the characteristics of switches and routers?

Yes


What do logical topologies describe?

A logical topology shows how a network is configured logically rather than physically. The main difference is that you could have 10 routers, 25 switches, and 5,000 computers in a logical topology and it doesn't matter where they are on the screen, it matters how they are connected to one another.


Which one had more overhead a router or a bridge?

a. Routers are more expensive than bridges. b. Routers operate at the first three-layers; bridges operates at the first two layers. Routers are not designed to provide direct filtering the way the bridges do. A router needs to search a routing table which is normally longer and more time consuming than a filtering table. c. A router needs to decapsulate and encapsulate the frame and change physical addresses in the frame because the physical addresses in the arriving frame define the previous node and the current router; they must be changed to the physical addresses of the current router and the next hop. A bridge does not change the physical addresses. Changing addresses, and other fields, in the frame means much unnecessary overhead.


What device separates collision domains?

Bridges, Switches and Routers will all separate collision domains.


How many routers and switches do you need to connect 81 computers?

Depends on how many switches each router takes. You need a router to connect all the other routers, and then enough switches to make 81. For example, you can use 6 16 port routers to connect the computers and 1 8 port router to connect those routers together