CompSci - Need For Different Software Systems

Question 1

Software Types

Answer 1

Safety-Related
Control
Expert
Wide Area Info Exchange
Local Area Info Exchange

Question 2

Software Types - Safety-Related

Answer 2

Prevents failure of critical systems

Used in aircraft control

Question 3

Software Types - Control

Answer 3

Manages the algorithmic behaviour of machines

Used in automation of manufacture

Question 4

Software Types - Expert Systems

Answer 4

Make inferential decisions based on knowledge of facts and relationships between them

Used in medical diagnosis

Question 5

Software Types - Wide Area Info Exchange

Answer 5

Enable communication over large distances

Used for email or cloud

Question 6

Software Types - Local Area Info Exchange

Answer 6

Allow communication over short distances

Used for file-sharing

Question 7

Consequences of Computer Automation

Answer 7

Real-time input and output
Absolute logic based decision making
Operate autonomously

Reduce jobs
Cannot handle unexpected circumstances

Question 8

Search Engine Use

Answer 8

Crawling - Data is collected from pages
Indexing - Data is organised in a database where it is filtered by keywords, topics or recency
Processing - The query searched is analysed and key topics, words and intent is understood
Matching - Indexed pages are matched with the query based on keywords or related topics
Ranking - Results are ranked based on closest matches
Results & User Interaction- Ranked results are displayed to the user on their browser

Question 9

Critical System Measures

Answer 9

Testing of safety systems before their use

Redundancy available in case of failure

Regular maintenance

Security