Networking Basics

Question 1

Mb

Answer 1

Mega bits

Question 2

MB

Answer 2

Mega bytes

Question 3

Modem

Answer 3

1st connector to internet
turns your ethernet signal / protocol / language used on your internal NW / data transmission into a language that your service company will understand.

Question 4

T1 connection

Answer 4

uses a device called and AD-Tran
Best overall connection to internet, but very expensive, and not very fast anymore
Not used a whole lot anymore
Has a far reaching connection

Question 5

DSL

Answer 5

Digital Subscriber Line
provided by phone company
signal is generally very good,
pretty cheap, not super fast
Max speed 12Mb per sec. Limitation of the technology.
Cable modems getting faster, fiber optics getting faster but not DSL
Pro: You have a direct connection to the company so more users does not mean a slower connection.
Asynchronous data transfer = you can always download faster than you can upload.

Question 6

Cable Modem

Answer 6

Cable Internet Connection.
Develped a lot in last 10 years.
new technology: docis 3.0, when fully implemented it will give you faster speeds
Have to share main bandwitdth so more users sharing connection = slower access

Question 7

Storage Data is in…

Answer 7

bytes

Question 8

Speed is in…

Answer 8

bits

Question 9

Satellite Internet

Answer 9

good for being in middle of nowhere. Upload speed is very slow. Not used much

Question 10

Router

Answer 10

Allows you to separate different networks.
Used to LOGICALLY divide networks.
Tennants in same building can all be on same internet connection.
One internet connection for multiple tennents ->Modem -> RouterS split out from modem to divide up subnetworks to separate comps and so people can’t hack into each others computers. Can get out to the internet through router but not loop back in to other networks.

Question 11

Order of devices from internet

Answer 11

Wireless Connection > Switch > Firewall > Router > Modem > INTERNET

Question 12

Firewall

Answer 12

A security device.
Used to block hackers.
When turned on it blocks everything on NW.
Open port 80 for internet.

Question 13

VPN

Answer 13

Allows people anywhere in the world to connect to your internal network.
As far as comps and network devices are concerned, that computer is part of your NW.
Their access will be much slower b/c they have to go through the internet to get there.
e.g. they could use your

Question 14

VPN endpoint

Answer 14

a logical server.
allows the client to connect to this VPN endpoint / server to connect to the internal network
“logical” because it is a service built into another device , it is not a separate device.

Question 15

What archiatecture does VPN use?

Answer 15

Uses a client-server archiatecture

Question 16

Hub

Answer 16

obsolete, don’t use one, it is dumb

Question 17

Switch

Answer 17

Allows everything to connect together in NW.
4 - 48 ports
has a little bit of intelligence.
like a complicated cable splitter.
Smart - distributes data appropriately to devices in the network.

Question 18

Unmanaged Switch

Answer 18

next level up from hub. cannot configure. everything is automatic.

Question 19

Managed Switch

Answer 19

can program managed switch settings in the switch

Question 20

Fastest

Answer 20

Gb networking for switch AND your computer

Question 21

WAP

Answer 21

Wireless Access Point
allows devices and comps to wirelessly connect to the network.
WAP is connected with a cord to the switch.

Question 22

80211 A wireless equipment

Answer 22

not really used, can’t use on anything, technically fine but flopped in terms of buisness

Question 23

80211 B

Answer 23

wireless standard

11 Mb / sec. Old technology, slow, not bad for when it came out

Question 24

80211 G

Answer 24

Came out 10 years ago
84Mb / sec
Standard now for networks

Question 25

What is 80211

Answer 25

the number of the standard

Question 26

List the wireless standards and compatibility

Answer 26

80211 A B G N
g compatible with b
n with g b
a with none

Question 27

80211 N Networking Device

Answer 27

Best and Newest standard.
Allows for much larger area to be covered by NW.
Much faster, 2x faster than G
Allows for real time video and voice communication.
Build for real time communication.

Question 28

Pre - N device

Answer 28

might cause weird problems. created to standard but before standard was completed

Question 29

Cabling

Answer 29

comp connection > cable runs down through building > all come to one area > get connected in to the back of the patch panel > patch cable goes from patch panel into switch

Question 30

Patch panel

Answer 30

Allows you move networks around.
Makes things neat and tidy.
Can make individual nw connections and move them around depending on when you need the na’s
can run 200 cable connections in building but only have a 48 port switch b/c you won’t need that many but have enough connections distributed throughout building to not worry about moving cables around

Question 31

Networking device

Answer 31

any device on a NW. Computers to ipods

Question 32

Server

Answer 32

Any Network Device that provides services

Question 33

Server vs Windows Server

Answer 33

Window Servers are a type of OS created by Microsoft. Windows server is a type of server but not the only type.
Servers in comp world and Servers in Microsoft Windows world are different critters

Question 34

Physical

Answer 34

actual cables and devices

Question 35

Logical

Answer 35

how things actually work and communicate

Question 36

Modems

Answer 36

a device to connect your local nw to the internet

Question 37

Patch cord

Answer 37

connects the patch panel to the switch

Question 38

How Networking devices are packaged

Answer 38

Have all of these devices are built into one device