Exam 11: Local Area Network Overview

One simple approach to improving efficiency is to physically partition the LAN into separate broadcast domains.

WANs have much greater capacity than LANs to carry what is generally a greater internal communications load.

The tree layout begins at a point known as the ________.

The total collection of devices that receive broadcast frames from each other is referred to as a ________.

In the ________ all stations attach directly to a linear transmission medium.A transmission from any station propagates the length of the medium in both directions and can be received by all other stations.

The key parameters in any medium access control technique are ________.

The ________ specifies the mechanisms for addressing stations across the medium and for controlling the exchange of data between two users.

A ________ is a logical subgroup within a LAN that is created by software rather than physically moving and separating devices.

In a star topology a repeater may also function as a device attachment point.

A ________ LAN includes a central node to which stations are attached.

The ________ is designed for use between local area networks that use identical protocols for the physical and link layers and,because the devices all use the same protocols,the amount of processing here is minimal.

LDPC codes exhibit performance in terms of bit error probability that is very close to the ________ limit and can be efficiently implemented for high-speed use.

Local Area Networks are usually owned by the organization that is using the network to interconnect equipment.

A ________ is a broadcast domain consisting of a group of end stations,perhaps on multiple physical LAN segments,that are not constrained by their physical location and can communicate as if they were on a common LAN.

The central element of the star topology is a ________.

Unicast addressing is where the destination address in the MAC frame designates a unique destination.

In the ________ topology the transmission medium is a branching cable with no closed loops.

The function of a ________ protocol is to control access to the transmission medium in order to provide for an orderly and efficient use of that capacity.

The ________ topologies are passive sections of cable to which stations are attached.

The term ________ refers to the way in which the end points,or stations,attached to the network are interconnected.