QUESTIONS TO ADD LATER
No description yet. This curated deck is ready for daily study.
Card preview (11)
What Happens in the Fetch stage? PC - MAR - CPU (x2) - MDR - MIR - CIR
The PC holds the address of the next instruction.This address is copied into the MAR. The MAR holds the address of the memory location to access.The CPU sends this address to main memory. The instruction stored at that memory address is sent back to the CPU.It is stored in the MDR. The instruction in the MDR is copied into the CIR. The instruction is now ready to be decoded
What are advantages of PageRank? • A and O • Qu over Quan
• Automatic and Objective : No need for humans to rank pages • Quality of Quantity: A link from an important page counts for many small pages
What are disadvantages of PageRank? • Can be Manip… • Ignores cont..
• People are able to create fake websites that link to each other (Link Farming) • It ignores the content quality of the website as it focuses on links
What is search engine indexing and how does it work? Crawl → Index → Rank
When a search engine stores and organises web pages in a large database so it can find them quickly later. Crawl – A bot scans websites. Index – The information is stored and organised. Rank – Algorithms like PageRank decide the order of results.
What does the Loader do?
Used to load the operating system from secondary storage into RAM so that it can be executed by the CPU.
What does the Linker do?
The linker combines separate program into one executable program so it can be run.
State three additional powers that this law gives to some government bodies • intercepts e and m • carry out surv on… • access encry da from SP
• Intercept emails and messages • Carry out survillence on people • Access encrypted data from service providers
Identify three principles of the Data Protection Act • processed f and l… • Used for a spec purp… • kept sec and acc….
1) Data must be processed fairly and lawfully 2) Data must be used for a specific purpose 3) Data must be kept secure and accurate
What are characteristics of a Flat File Database? (4) Hint: Opposite to Relational Database.
• Has a single table • Only suitable for very simple data handaling requirements • Harder to update • No specialist knowledge needed to operate
What are characteristics of a Relational Database? Remember the one you keep forgetting
• Has linked tables • Has Security features • Easy to add data • Easy for large volumes of data • Requires Specalist Knowledge
Describe three different pieces of networking hardware in a client–server network. 1) S: Connects devices within… 2) R: Connetcs networks to… 3) WAP: Provides a….
1) Switch : Connects devices within the network 2) Router: Connects the network to other networks 3) Wireless Access Point: Provides a wireless connection for devices