Sherpa

Existing user?

Computer Science

GCSE · OCR

QuestionsFlashcards

Identifying & Preventing Threats to Computer Systems & Networks
- Forms of Attack on a Network
  8
- Methods of Preventing a Network Attack
  10

Operating Systems & Utility Software
- The Purpose & Functionality of Operating Systems
  7
- The Purpose & Functionality of Utility Software
  6

Ethical, Legal, Cultural & Environmental Impact
- Impacts of Digital Technology on Wider Society
  7
- Legislation in Computer Science
  8

Boolean Logic Diagrams
- Boolean Logic Diagrams
  9
- Combining Boolean Operators
  7

The Purpose & Functionality of Utility Software Flashcards

All 6 cards in this deck

What is utility software?: Software that helps maintain the computer system by performing housekeeping/maintenance tasks to improve performance.
True or false? Utility software is a type of application software.: False. It is systems software, performing maintenance tasks that may not be carried out by the operating system.
What does encryption software do, and why would a user need it?: It scrambles the contents of files with a complex algorithm so they appear as gibberish; only authorised users can descramble them, protecting files from unauthorised access.
What does defragmentation software do to a fragmented disk, and why does it improve performance?: It rearranges the segments of each file so they run contiguously, which decreases read/write time and speeds up the computer.
What is the purpose of data compression software?: To reduce the size of files, so more files fit in a given area of storage and fewer packets are needed to send them across a network.
True or false? Running defragmentation software is a suitable way to stop files on a stolen laptop being read by a thief.: False. Defragmentation only reorders file segments to speed up read/write; encryption software is needed to make files unreadable to unauthorised users.