POST EXAM-REQUIRED KNOWLEDGE

POST EXAM-REQUIRED KNOWLEDGE

1. Why does cache size affect CPU performance?=More cache allows for data to be transferred faster which improves CPU performance

2. How are packets used to send documents?=1.Document is split into packets 2.Each packet is given receiver's network address 3.Each packet is given a certain number 4.Each packet is checked for errors 5. Each packet is sent across the network 6.The other computer receives and reforms the packets

3. Fragmentation

   • Hard disc can become fragmented if they are split up during transport to the memory
   • Defragmentation software can overcome a slow computer system by moving the files onto the hard disc

4. Wide Area Network (WAN)

   • Wireless network connected to a LAN based router

5. Advantages of storing data on the cloud

   • More cheap and efficient
   • Allows extra storage on the device being used

6. A larger RAM and a better GPU can affect computer performance

7. During the fetch-execute cycle: 1.Information is fetched from the memory 2. The information is decoded 3.Any instructions that are required to process the data 4.The process is repeated

8. Three types of storage technology are Optical, Magnetic and Solid State memory

9. An advantage of using layers to construct network protocols is that a layer ca be removed and repaired without the others being affected

10. Advantages of a Star Network topology are: 1.New devices can be added easily 2.The computers can all be managed by a central server 3. Almost no data collisions can occur 4. If a computer fails the others can still function

11. 3 possible human errors for a server/network are: 1.Someone could bring in an infected external device 2.Someone could download infected files 3.Someone could steal sensitive or important data

12. Disadvantages of storing data on the cloud

    • Requires strong, constant internet connection
    • Users rely on third party owners for security