Higher Computing Quiz; Part 1

16 Questions | Total Attempts: 366

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Computing Quizzes & Trivia

A quiz made to help myself revise for Higher Computing for an SQA final exam. Questions are created using SQA 2009 higher past paper and their answer sheets.


Questions and Answers
  • 1. 
    Write the binary number 1000100111 as a positive integer.
    • A. 

      512

    • B. 

      456

    • C. 

      551

    • D. 

      465

    • E. 

      5

  • 2. 
    Represent the decimal number − 73 using 8 bit two’s complement.
    • A. 

      10110111

    • B. 

      -10110111

    • C. 

      01001001

    • D. 

      -01001000

    • E. 

      1001001

  • 3. 
    Most modern computers use Unicode rather than ASCII to represent text.Select the true advantages of Unicode when compared to ASCII.
    • A. 

      Unicode can represent all character based alphabets.

    • B. 

      Characters can be user/software defined.

    • C. 

      ASCII has a very limited character set.

    • D. 

      ASCII does not allow user defined characters.

    • E. 

      Unicode takes up less memory than ASCII.

  • 4. 
    State the number of bits required to represent 16 777 216 colours.
    • A. 

      4

    • B. 

      8

    • C. 

      128

    • D. 

      12

    • E. 

      24

  • 5. 
    A disk editor is a common example of a (_______) software. 
  • 6. 
    Which of these are not functions of a disk editor?
    • A. 

      Allows user to get/remove file fragments

    • B. 

      Allows the user to directly edit contents of disk sectors/blocks

    • C. 

      Allows the user to create secure locations for file backups

    • D. 

      Allows user to set up firewalls within the disc

    • E. 

      Allows recovery of damaged/deleted blocks/files

  • 7. 
    The bootstrap loader is part of the operating system. State the purpose of the bootstrap loader.
    • A. 

      To load information about the systems performance on start-up.

    • B. 

      To locate and load the rest of the OS at start-up.

  • 8. 
    A trojan horse is a malicious computer program. Which are characteristic of a trojan horse.
    • A. 

      Not spread by infecting other files or self replicating

    • B. 

      Spread by infecting other files or self replicating

    • C. 

      Disguises itself or appears to be a harmless/ordinary/useful file

    • D. 

      Does not disguises itself once loaded on the system.

  • 9. 
    Explain why increasing the number of registers could improve system performance.- Tick if true.
    • A. 

      Fewer fetches required from (slower) main memory/RAM/cache

    • B. 

      Access to data in registers is faster than to RAM or cache

  • 10. 
    'Unable to run on available OS' / 'Clash with existing software' -  Are these examples of Hardware incompatibility or Software Incompatibility?
    • A. 

      Hardware

    • B. 

      Software

  • 11. 
    Which are possible hardware compatibility issues?
    • A. 

      Lack of available memory

    • B. 

      Less powerful/unsuitable processor

    • C. 

      Unsuitable graphics/sound card

    • D. 

      Wrong operating system version

    • E. 

      Incorrect wiring for computer system display

  • 12. 
    All computers in a network are controlled by a single head computer. What type of network is this?
    • A. 

      Peer-peer

    • B. 

      Mesh

    • C. 

      Bollean

    • D. 

      Client-server

  • 13. 
    Possible technical reasons for choosing a client-server network over a peer-to-peer network.
    • A. 

      Allows for better communication between systems using instant messenger software

    • B. 

      Faster file transfer speeds

    • C. 

      Easier to do backups with centralised file server

    • D. 

      Better security of data

    • E. 

      Software servers allow better control of licensing/upgrades/remote installation

  • 14. 
    A graphic file is to be transferred as an e-mail attachment. Which file type would be more appropriate, and why?
    • A. 

      JPEG; Lossy, higher compression and lower file quality.

    • B. 

      TIFF; Lossy, no compression and higher file quality.

    • C. 

      JPEG; Lossless, no compression and higher file quality.

    • D. 

      TIFF; Lossless, higher compression and lower file quality.

  • 15. 
    "Stages are revisited/repeated" "As a result of new information/information gained later in the process""In order to improve the solution"These are examples of the (________) process. 
  • 16. 
    The username is created by joining the initial to the end of the surname, for example “CarrickE”.Name the string operation used to create the username.
    • A. 

      Repartition

    • B. 

      Strcmp

    • C. 

      Concatenation

    • D. 

      Integer

    • E. 

      Boolean