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07 - Practice Test

 1. Machine code is used in which generation of a programming language?

  2nd Generation

  3rd Generation

  4th Generation

  1st Generation

 2. Which language translator is needed for the 1st generation?

  A basic translator (IBM)

  No Translator

  An interpreter

  An assembler

 3. Which generation would create the fastest code to execute?

  4th Generation

  3rd Generation

  2nd Generation

  1st Generation

 4. An advantage of low level languages is that:

  it produces programs of a relatively smaller file size

  None of the above

  it produces complex large files that are robust and useful for the programmer

  it produces great big programs that are complex and difficult to manage

 5. An advantage of a high level language is that:

  It is easier to understand (by a programmer)

  It is closer to the machine and machine code

  It is useful for device drivers

  None of the above

 6. Low level languages are said to have a one to many relationship with high level languages

  FALSE

  TRUE

 7. The Little Man Computer is a very simple yet powerful …. 
This is a great introductory video to LMC - have a watch if you are able.

  model of the monitor of a computer

  model of a spacecraft of the future

  model of a printer

   model of a computer!

 8. Read the excerpt on LMC and fill in the blanks 
LMC is a simulator which has many of the basic features of a 
modern computer that uses the __________________________ (a central 
processing unit consisting of an arithmetic logic unit and
registers, a control unit containing an instruction register 
and program counter, input and output mechanisms and RAM to 
store both data and instructions).

  Cartal model of computers

  spatial awareness meter

  Von Neumann architecture

  None of the above

 9. The LMC is based on the idea of a 'Little Man' acting like the control unit of a CPU, _________________ them as well as managing the input and output mechanisms.

  riding through metaphorical hills and valleys and enjoying

  None of the above

  catching 1s and 0s as they pass through the computery ether and making

  fetching instructions from RAM, decoding and executing

 10. The 100 memory addresses in the computer memory are numbered 0 to 99 and can each contain a________________ instruction or data.

  C code

  gentrified code

  python code

  machine code

 11. Each assembly language instruction is made up of a 3 letter mnemonic usually followed by the memory address of the data the CPU is to act on

  FALSE

  TRUE

 12. One disadvantage or issue with assembly language is that the code only works on a specific CPU family. If you use a different CPU you would

  None of the above

  need to make a copy of your old CPU

  not need to rewrite the code at all

  need to re-write the code using a different version of assembly language

 13. The main advantage of assembly language is that it :

  is soft and cuddly, and therefore programmer's favourite

  is robust and hardy and cannot ever make a mistake (hence it's popular use in spacecraft)

  runs fast compared to programs written in a high level language as there is less code overall

  runs slow compared to high level languages which makes it easy to follow

 14. An example of a program that is typically written in assembly language is:

  a website for a government

  a device driver

  a personal fitness app for Android

  an online shop

 15. Device drivers need to be as ______________ as possible which is why assembly language is perfect

  easily understandable in terms of the code

  None of the above

  slow and careful

  fast and efficient

 16. Which of the following is NOT a typical assembly language command. 
add
lock
subtract
load
compare
branch
store

  add

  load

  subtract

   lock

 17. An example of an assembly code mneumonic is LDA 50 which…

  adds the value 50 to the loaded value before it

  stores (loads) the value 50 into a register in the CPU

  stores the value 50, fifty times into fifty registers in the CPU

  None of the above

 18. In this example: LOAD 0004, it can be said that 'LOAD' is the opcode and the second part 0004 is the memory address

  TRUE

  FALSE

 19. In the command MOV AL 34h…the opcode is the __________ instruction and the other parts are called OPERANDS.

  AL instruction

  MOV instruction

  None of the above

  34h part of the code

 20. Operands are…

  manipulated directly by a high level language command

  tiny bits that are used to code in assembly language

  manipulated by the opcode

  little bits of beauty

 21. What does this LMC program do? 
INP 
STA A 
INP 
STA B 
LDA A 
ADD B 
OUT 
HLT
A    DAT
b    DAT
lmc_q1.gif

  adds two numbers and displays the sum

  take in two numbers and stores them, displaying the first number

  takes in three numbers and stores them

  None of the above

 22. This LMC program doesn't add or subtract. What does it do? 
INP 
STA A 
INP 
STA B 
LDA A 
SUB B 
BRP isPositive
LDA B
OUT
HLT 
isPositive
LDA A 
HLT
A    DAT
B    DAT

  loads two letters 'A' and 'B' and determines which one comes first

  determines the bigger of two numbers by using loops

  sorts three numbers from smallest to largest

  finds out if an input number is positive or negative

 23. The LMC can add or subtract numbers, but it can neither multiply nor divide. The multiplication can be carried out with the aid of ……..

  nothing - this cannot be done!

  addition!

  subtraction!

  stubborn and persistent hard coding

 24. Assembly language is written using:

  None of the above

  ASCII code

  Hex code

  Mneumonics

 25. Assembly language instructions like MOV or ADD are called operands

  TRUE

  FALSE


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