quick Flashcards

1
Q

immediate addressing (“LDA005”)

A

load the value “005” into the accumulator

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2
Q

feature of assembly language

A

commands have a one-to-one relationship with machine code

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3
Q

RIPA - regulates the power of public bodies to : (3)

A
  • carry out investigations
  • interceptions of communications
  • grants certain public bodies(MI5, police)
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4
Q

what are examples of interceptions that public bodies have the right to

A

examples(phone calls, emails, SMS)

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5
Q

what is the dampening factor used for

A

used to prevent pages from having too much influence(on pagerank value)

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6
Q

When does record locking happen and what level does it happen at

A

when the user wants to modify a record the DBMS will lock it.
done at reord level NOT at table level.

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7
Q

what is thinking ahead

A

identifying all the inputs and outputs required for a system before its implemented

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8
Q

what is problem recognition

A

identifying the key requirement of a solution

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9
Q

what is decomposition

A

breaking down a problem into smaller sub-problems

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10
Q

what is market failure

A

when the price mechanism leads to a misallocation of resources

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11
Q

what makes an algorithm computational (2)

A
  • it has a step by step sequence of instructions
  • it has an output
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12
Q

what is the purpose of the FDE cycle

A

to move the next instruction from RAM to the CPU, where it will be executed

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13
Q

what are the factors that impact the supply of labour(5)

A
  • infrastructure (ability to commute from/to work)
  • skills required
  • differences in wages between countries
  • monetary and non - monetary benefits(bonuses, free healthcare)
  • housing costs in a particular area
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14
Q

what happens in the fetch stage during the FDE

A
  • the address of the PC is copied into the MAR + the contents are placed into the MDR
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15
Q

what happens in the decode stage during the FDE

A
  • the CU is responsible for decoding + the contents in the CIR are decoded into operand and opcode
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16
Q

what happens in the execute stage during the FDE

A
  • the logic operation is carried out by the ALU. the results are stored in the ACC
17
Q

what is a zero indexed array(2)

A
  • a data structure which stores data of the same type
  • the first element is stored at the index zero
18
Q

what is an embedded system(2)

A
  • a processor built into another device
  • designed to perform a specific task
19
Q

definition of RISC

A

an integrated circuit with a basic range of machine instructions

20
Q

one reason why Purchasing Power Parties are used(2)

A
  • to improve accurace when comparing data betwen countries
  • PPP compares the cost of living between different countries
21
Q

RAD(4)

A
  • prototype is created
  • evaluated and feedback is used to inform next iteration
  • any changes are made
  • process is repeated until prototype becomes final product
22
Q

what is a hash

A

a result generated by applying an algorithm to a value

23
Q

another name for variable and its name

A

memory location with label “…….”

24
Q

3 evaluation points for monopsonies

A
  • suppliers will have a major buyer improving revenue, long-term investment and profit
  • government intervention to protect supplier and its employees(setting limits on price)
  • monopsony firm benefit(lower costs)
25
what is organic growth
- the business gows naturally - opening new branches
26
what is the genie coefficient
area between the line of perfect equality and the lorenz curve(divided by the totoal area)
27
what is absolute poverty
income of < $2.15/day
28
what is relative poverty
when the income earned < 60% of median income
29
what are the scores for HDI
- >=0.8 = very high(development) - 0.7-0.79 = high - 0.55-0.69 = medium - < 0.5 = low
30
what is the only exception for newton raphson, what does it mean
it doesnt wo-rk when the gradient is 0, there is a stationary point at x = 0
31
why does a one to many to one relationship have to be created(3)
- changes many to many relationships - it takes the design into a normalised form(3NF) - reduces data inconsistencies
32
how does a multi user operating system work(4)
- different usernames and passwords allows different users to log in - individual settinjg for each user can be stored - ... to personalise user eperience(desktop background and colour) - access controls can be allocated to each user (to only permission to files that they are allowed to access)
33
what are the four stages of the spiral model
- identify - design - construct - evaluate