Internetworking, Chapter 8, Data Comm. & Comp Networks

Front 1

What is the term for connecting multiple networks or multiple segments of networks?

Back 1

Internetworking

Front 2

What is the term for breaking a large network into smaller networks called?

Back 2

Segmentation

Front 3

Name 4 devices whose purpose is to provide for the interconnection of two or more networks:

Back 3

hubs, bridges, switches and routers

Front 4

A device that interconnects two or more workstations in a star-wired bus local area network & broadcasts incoming data onto all outgoing connections

Back 4

Hub

Front 5

A device with no routing or selective fowarding capability, that works at the Physical layer:

Back 5

Hub

Front 6

A managed hub can be managed from a remote location, T/F?

Back 6

True

Front 7

What management operations are performed on a Managed hub?

Back 7

Inventory mgt (what devices are where on network), traffic & envir. monitoring, power mgt.

Front 8

What is the purpose of an unmanaged hub?

Back 8

To allow the interconnection of two or more workstations in a LAN.

Front 9

Describe the characteristics of the location of most hubs:

Back 9

within 100m of workstations (due to type of cable), located in locked closets, near power source

Front 10

One feature that make hubs attractive is?

Back 10

Low Cost

Front 11

Which device can use processing power to direct a frame out a particular port, thus reducing the amount of traffic on the network?

Back 11

Bridge

Front 12

A device that interconnects two LANs that both have a medium access control sublayer.

Back 12

Bridge

Front 13

A simple form of a switch is called?

Back 13

Bridge

Front 14

What examines the destination address of a frame and forwards or does not forward the frame depending on address info?

Back 14

Filter

Front 15

How will a brdigge reduce the amount of traffic on interconnected networks?

Back 15

It will drop frames that do not have to be forwarded.

Front 16

What type of bridge observes network traffic flow, uses this info to makes future decisions re:frame forwarding

Back 16

Transparent Bridge

Front 17

How does bridge use backward learning?

Back 17

It learns by observing the location from which a frame has come.

Front 18

A bridge capable of passing data frame between two LANs separated by a long distance and a WAN

Back 18

Remote Brdige

Front 19

Which bridge is more complex and more costly? Remote or Transparent?

Back 19

Remote Bridge

Front 20

A device that combines the capabilities of a hub and bridge is called what?

Back 20

A switch

Front 21

A multiport bridge that can have as many ports as a hub is called what?

Back 21

A switch

Front 22

How does a switch reduce the number of collisions?

Back 22

by reducing the number of unnecessarily transmitted packets

Front 23

Some advantages of a switch over a bridge are:

Back 23

More powerful, supports multiple LAN technologies, redundant circuits, auto switch to back-up circuit

Front 24

technology that allows data frame to exit the bridge or switch almost as soon as it begins to enter it

Back 24

cut-through architecture

Front 25

The main hardware of a device (switch)into which all supporting printed circuit cards connect is called the?

Back 25

Backplane

Front 26

If circuit cards can be inserted and removed while the power to the unit is still on, it is:

Back 26

Hot Swappable

Front 27

multiple workstations connected through one or more hubs to one switch sharing one channel are called:

Back 27

shared segment networks

Front 28

a switch directly connected to a workstation which then connects to a hub is called:

Back 28

dedicated segment networks

Front 29

logical subgroup within a LAN created via switches and software is called:

Back 29

Virtual LAN, VLAN

Front 30

VLAN advantages

Back 30

1)network within a network 2)fewer collisions within VLAN 3)Faster response time 4)bandwidth optimized 5)Security enhanced

Front 31

What is the primary goal of a switch?

Back 31

to isolate a particular pattern of traffic from other patterns of traffic or from the remainder of the network

Front 32

As switch evolves, what devices will it replace?

Back 32

hub, bridge and others

Front 33

transmitting data frames between two networks, one having a MAC sublayer, one not having one, is the function of what?

Back 33

the router
ex. LAN and Internet

Front 34

a system that supports an access control policy between two networks

Back 34

firewall

Front 35

the concept tha tdata transmission rates, error rates and other network traffic char. can be measured, improved and guaranteed in advance

Back 35

Quality of service (QoS)