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Network Hardware PAL#8

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Network Hardware PAL#8

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Network Hardware PAL#8

  1. 1. Networking Technology Unit 10 – Setting Up an IT Network 1
  2. 2. Network Interface Card Each computer must have a NIC and some way ofinterconnecting 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? 2
  3. 3. Cables UTP or STP What do these 2 sets of initials stand for? –Describe this type of cableWhat helps stop interference in this cable?Is this cable flexible? Is it priced highly or cheaply? Fibre Optic –Describe the inside of this cable - What are its advantages and disadvantages? 3
  4. 4. Microwave/SatelliteUsed for short or long distance communication? Microwave transfers signals between? Name 2 types of technology that use microwaves How are microwaves transferred over greater distances? 4
  5. 5. Hubs Connect a number of computers together-usuallystar topology. Passive-limited number of connections(Howmany?), Is the data signal boosted or not? How farcan signal travel without fading? Active-large number of connections(How many?), Isthe data signal boosted or not? . The hub takes the signal sent from each computer,amplifies it and transmits it to the particular addresson the data packet or to all computers attached tothe hub? – Inteligent or not? A socket can be used to connect the hub to another ?,which?. 5
  6. 6. Switches Switches look like hubs, they connect a number ofcomputers together but they are ? How do they deliver data to right computer? More expensive than hubs 6
  7. 7. Routers Carry out similar tasks to bridges but they do itdifferently. They inspect each packet, extract destination address,and use this to route the packet from one LAN toanother. HOW do they find the best route to destinations? They connect networks at the network level of the OSImodel. 7
  8. 8. ModemsModem sends and receives data through telephone line. Give two words which mean changing sound signal into binary signals. ADSL Expand these initials to full name ISDN Expand these initials to full nameExplain the 2 terms above a little. 8
  9. 9. Digital and Analogue Lines Analogue lines – telephone lines – transferring what type of signal? Digital Lines – (e.g. ISDN) transfer what type of signal? 9
  10. 10. Leased/ dedicated lines Leased (Give another word for leased) line – used for connecting computer networks over large distances or short distances. Called a dedicated line – what does this mean? 10
  11. 11. Workstation and Peripherals Workstation –with modest specifications to connect to network. What 4 pieces of equipment make up a workstation? Peripherals - electronic equipment connected by cable to the CPU of a computer – e.g. printer, speakers, microphone, joystick Choose 5 and explain a little. 11
  12. 12. Servers Server-What is a server? Several types of server on a network Print server provides? File server – provides ? 12
  13. 13. Uninterruptible Power Supply Networks may needed 24/7 A server will sense when power is ?– change quickly to UPS ( e.g. give an example) What other form of power is used to keep a server running? 13

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