network hardware pal#8

11

Networking TechnologyNetworking Technology

Unit 10 – Setting Up an IT Network

22

Network Interface CardNetwork Interface Card

Each computer must have a NIC and some way of interconnecting the computers – cabling or wireless.

Fit into PC Card slot

Each card has a physical MAC address

What does MAC stand for?

What is the MAC address needed for?

33

CablesCables

UTP or STP What do these 2 sets of UTP or STP What do these 2 sets of initials stand for? – initials stand for? –

Describe this type of cableDescribe this type of cableWhat helps stop interference in this cable?What helps stop interference in this cable?Is this cable flexible? Is it priced highly or Is this cable flexible? Is it priced highly or

cheaply?cheaply?Fibre Optic –Describe the inside of this Fibre Optic –Describe the inside of this cable - What are its advantages and cable - What are its advantages and disadvantages?disadvantages?

44

Microwave/SatelliteMicrowave/Satellite

Used for short or long distance Used for short or long distance communication?communication?

MicrowaveMicrowavetransfers signals between?transfers signals between?

Name 2 types of technology that use Name 2 types of technology that use microwaves microwaves

How are microwaves transferred over How are microwaves transferred over greater distances?greater distances?

55

HubsHubsConnect a number of computers together-usually

star topology.

Passive-limited number of connections(How many?), Is the data signal boosted or not? How far can signal travel without fading?

Active-large number of connections(How many?), Is the data signal boosted or not? .

The hub takes the signal sent from each computer, amplifies it and transmits it to the particular address on the data packet or to all computers attached to the hub? – Inteligent or not?

A socket can be used to connect the hub to another ?, which?.

66

Switches Switches Switches look like hubs, they connect a number of

computers together but they are ?

How do they deliver data to right computer?

More expensive than hubs

77

Routers Routers

Carry out similar tasks to bridges but they do it differently.

They inspect each packet, extract destination address, and use this to route the packet from one LAN to another.

HOW do they find the best route to destinations?

They connect networks at the network level of the OSI model.

88

ModemsModems

Modem sends and receives data through Modem sends and receives data through telephone line. Give two words which telephone line. Give two words which mean changing sound signal into binary mean changing sound signal into binary signals. signals.

ADSL Expand these initials to full nameADSL Expand these initials to full name

ISDN Expand these initials to full nameISDN Expand these initials to full name

Explain the 2 terms above a little.Explain the 2 terms above a little.

99

Digital and Analogue LinesDigital and Analogue Lines

Analogue lines – telephone lines – Analogue lines – telephone lines – transferring what type of signal?transferring what type of signal?

Digital Lines – (e.g. ISDN) transfer what Digital Lines – (e.g. ISDN) transfer what type of signal?type of signal?

1010

Leased/ dedicated linesLeased/ dedicated lines

Leased (Give another word for leased) line Leased (Give another word for leased) line – used for connecting computer networks – used for connecting computer networks over large distances or short distances.over large distances or short distances.

Called a dedicated line – what does this Called a dedicated line – what does this mean?mean?

1111

Workstation and PeripheralsWorkstation and Peripherals

Workstation –with modest specifications to Workstation –with modest specifications to connect to network. What 4 pieces of connect to network. What 4 pieces of equipment make up a workstation?equipment make up a workstation?

Peripherals - Peripherals - electronic equipment electronic equipment connected by cable to the CPU of a connected by cable to the CPU of a computer – e.g. printer, speakers, computer – e.g. printer, speakers, microphone, joystick Choose 5 and microphone, joystick Choose 5 and explain a little.explain a little.

1212

ServersServers

Server-What is a server?Server-What is a server?Several types of server on a networkSeveral types of server on a network

Print server provides?Print server provides?

File server – provides ?File server – provides ?

1313

Uninterruptible Power SupplyUninterruptible Power Supply

Networks may needed 24/7Networks may needed 24/7A server will sense when power is ?– A server will sense when power is ?–

change quickly to UPS ( e.g. give an change quickly to UPS ( e.g. give an example) example)

What other form of power is used to keep What other form of power is used to keep a server running?a server running?