Chapter Seven Sample Questions

A backbone network is a high-speed network that connects many networks

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Reference: Introduction

Backbone networks typically use lower speed circuits to interconnect a series of LANs and provide connections to other backbone networks.

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Reference: Introduction

A backbone network that connects many backbone networks spanning several buildings at a single location is often called an Internet backbone.

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Reference: Introduction

One basic component of a backbone network is the hardware device that connects other networks to the backbone.

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Reference: Backbone Network Components

Switches, routers, and gateways are devices that can connect networks to the BN.

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Reference: Backbone Network Components

The cable to connect BNs is usually twisted pair.

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Reference: Backbone Network Components

A hardware device that operates at the application layer is a router.

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Reference: Routers

Routers can only connect the same type of cable.

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Reference: Routers

Routers use network layer address to forward packets between network segments.

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Reference: Routers

Routers operate at the application layer.

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Reference: Routers

Routers connect two or more network segments that use the same or different data link protocols, but the same network protocol.

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Reference: Routers

One advantage of a router is that it can choose the “best” route between networks when there is a choice.

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Reference: Routers

One difference between a switch and a router is that a router will only process messages addressed to the router, while a switch processes all messages.

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Reference: Routers

Gateways are more simple than routers.

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Reference: Gateways

Gateways connect two or more networks that use the same or different data link and the same or different network protocols.

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Reference: Gateways

Layer-3 switches switch messages based on their data link layer address.

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Reference: A Caution

Routed backbones use switches that move packets based on data link layer addresses.

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Reference: Routed Backbones

The distribution layer of a backbone connects LANs together.

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Reference: Backbone Architectural Layers

The primary advantage of a routed backbone is that it clearly segments each part of the network connected to the backbone because each segment has its own subnet addresses that can be managed separately.

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Reference: Routed Backbones

One advantage of a routed backbone is that is requires little management.

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Reference: Routed Backbones

A routed backbone tends to be used more for large networks than VLANs, although VLAN high speed switches and this new type of LAN-BN architecture are now being considered.

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Reference: Virtual LAN

A switched backbone uses a bus topology

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Reference: Switched Backbone

A room that contains a rack of equipment for a rack-based collapsed backbone is also called the main distribution facility (MDF) or central distribution facility (CDF).

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Reference: Switched Backbones

A key advantage of a chassis switch is its flexibility.

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Reference: Switched Backbones

A VLAN network assigns computers to LAN segments by hardware.

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Reference: Virtual LANs

A VLAN requires the computer manager to reconfigure the physical cables to the switch if a computer is moved from one port to another port on a switch.

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Reference: Virtual LANs

VLANs provide faster performance compared to switched, collapsed or routed backbone architectures.

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Reference: Virtual LAN

Topic revision: r1 - 2012-12-06 - JimSkon
 
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