1

Cable types

2

Topology characteristics

3

UTP cable categories

4

Wireless technologies

5

Cable management

Wiring standardPlenumWall jacksPunch-Down BlockPatch panelsCable ties and basket systemsServer rooms

6

Punch down block and connectors

7

Patch panel front view

8

Basket systems

9

Cable management, wiring

2 cabling typer Horizontal wiring Backbone or vertical

Struktureret kabling (figur 4.17) Work area Telecommunication closet Equipment room Horizontal cabling Backbone cabling Entrance facility

10

Structured cabling

11

Cable management, server rooms

Server rooms need to be secure and only accessible to a few persons

Rules Lock the server room when not in use Always require user names and passwords Always log out when not operating the server Set up restrictions to disable direct log ong to

the server Perform security monitoring as auditing

12

Cable management, server rooms

ESD suggestion ESD prevention program – ESD wrist

straps, place server on anti static mats Keep humidity low (<50 %) Install an UPS Keep system cool (room temperatur or

less) Make tape backup or other type of

backup

13

Cable management, server rooms

Also Place server in a rack or rack mounted

cabinet Server blade

14

Test of cable systems

Questions to ask Did the cable ever work correctly? When did the cable begin to fail? Do the errors occur at specific times? Is it a new or used cable? What has changed since the cable

began to fail?

15

Selecting network card

Find the network typeFind the network speedMake sure the card has the correct

connectorsThe card must fit in the available

expansion bus

16

Selecting network component

Hubs Layer 1. Packet arrives to a port and is

copied to all other hostsBridge

Layer 2. Net of different types can be connected

Switch Bridge has problems with scalability,

latency, network errors and collisions

17

Ethernet types

18

Network technologies

10Base5, rules see p. 17010Base2, rules see p. 17110BaseT, rules see p. 1735-4-3 rule

19

10base5

20

10base2

21

10baseT

22

5-4-3 Ethernet coaxial

23

5-4-3 for UTP

24

5-4-3 UTP/coax

25

Switching in WAN

26

WAN characteristics

27

WAN characteristics