Answers To Exam + (DSS+MM) - (Updated)
Tommy's Answers to Exam (Summarised)
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Question 21
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a) A set of rules that governs the transmission of data in a communications system. Example is Z-Modem which asks for no acknowledgement when transmitting data therefore using a full-duplex mode of transmission
b) 1. Boolean Searching - IPT + Hardware etc
2. Wildcard Searching - "*" "<>" "?" eg. IPT <> Insurance Protection Tax
3. Logical/Relational Operators: <, >, =<, => and THEN AND NOT
c) - Stress Testing - stretching system to its greatest limits to find any faults
- Direct Conversion - getting rid of old system immediately as not needed.
search engine more advanced then other methods of
searching.
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Question 22
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a) Data Redundancy refers to the inappropriate repetition of data. This is found in the database through the repetition of the borrowers names eg "John Jones"
b) 3 Tables - Item table : Item Number (PK), Item
- Borrowers table: Borrower ID, First Name, Surname, Faculty, Item ID
- Date table: Date borrowed, Date returned
*Links between tables shown and one to many /many to one relation etc (1 and infinity sign)
c) Included Report Header, Page Header, Details, Page Footer, Report Footer
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Question 23
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a) (Had to identify at least 2 of each)
HARDWARE: Monitor, Computer, Mouse, Keyboard, Mouse, Mobile Telephone, Modem, Cables, Facsimile, Firewall
SOFTWARE: ISP Software, Chatting Software, Web Browser, Email Software
COMMUNICATIONS: Link to Internet, Telephone Line connection, Mobile Phone connection, etc
b) Advantages:
- frees up storage space in main office
- reduces costs in main office - electricity and etc
- usage of skills from everywhere
- profits increase business expands
Disadvantages:
- employer cant supervise employee
- if no work being done profits down etc.
- has to buy equipment for employees to put in homes - to be able to work
- loss of social stigma for employees as lose contact with other people - this
can lead to people leaving the job causing problems for employer
c) (This question was weird – no where in syllabus does it say “project management strategies, I think they will have many people writing the communication skills. I think everyone who listed them should get marks because they somehow do act as strategies between the people to “work together effectively”).
- Active listening
- Conflict resolution
- Negotiation Strategies
- Interview Techniques
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Question 24
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a)
Strengths
- Data available anywhere – needed especially in emergencies – near deathsituations – what tablets to give to who in emergency etc.
- Accounts may be updated meaning manual methods are wiped out and
patients may be told on request how much owing.
- Members may save time - allowing them to attend to patients who are in
desperate need.
Weaknesses - Expensive – depending on medical staff
- Maintenance needed
- Invasion of privacy – members of hospital may access private
details
- Invasion of security – private information not secure as member
- Members need to be trained on how to use
b) Some technical issues: -
- People from outside the organisation can access wireless network – hack in (if in range)
- Signal can fade if hospital workers too far from access point.
- Can interfere with other medical equipment
- No back up so if system fails the whole hospital system will be in turmoil
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Question 26 – Decision Support Systems
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a) i) Visual interpretation of data. Trends may be seen clearer therefore allowing
person to make more well defined decision. Graphs and charts include bar
charts(information year by year can be stacked on vertical boxes), line graphs
(show continuous data), column graphs etc.
ii) An Intelligent agent is a piece of software in which automatically takes out a
intelligent response to a task. These agents are programmed by humans and are
found in many different applications. An example of a intelligent agent is a
SPAM filter found in Email Software. This SPAM filter forwards unsolicited
mail into a Junk Mail box.
b)
i) Decision Tree ***(If anyone wants it PM me)
ii) IF (Did the whale have flukes) = Yes AND IF (Did the whale have a dorsal fin) = No AND IF (What was the size of the whale?) = Medium AND IF (Were one or two blows visible at the same time) = Two THEN (The whale is a) = Gray Whale
c) Ran Out of time in this question. Wrote about 1/5 of answer.
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Question 28 – Multimedia Systems
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a) i) Morphing is a type of animation in which allows one picture to be blended into another. An example of its use is the inclusion of images in multimedia system where human attributes are blended with animals to give affect. This is found with the morphing of a man’s body with a horse’s legs.
ii) The Sampling Rate may be described as how many types an audio file is sampled per unit of time. The higher the sampling rate the more better quality the file is. CD quality music’s sample rate is much larger than the sample rate of audio found on the Radio.
b) i) Video, Audio, Images Text – rest pretty straight forward
ii) - Presentation Software
- Authoring Software
- Web-site publishers
- HTML Coding Software
- Animation Software
( + definitions)
c) Developments:
- Mobile phones – video calling, video cameras/still cameras, 3rd generation
mobiles
- Video camcorders – mini tapes, CD’s it can tape on. This media can be
htransferred onto computer
- Output devices – projectors, LCD monitors etc
- The Internet – media storm. Allowed people to view media, send, create
Issues and Implications
- Merging of technologies : mobile phones with cameras – used for illegally taking photos of credit card numbers/ nude beaches
- Appropriate use of Internet : pornography – images and videos unethical: minors have access to it
- Data integrity – with so many versions of information, data matching has been used to ensure data is correct. Etc
- Copyright laws have been violated etc.
Tommy's Answers to Exam (Summarised)
-------------------------------------------------------------------------------------------------------
Question 21
-------------------------------------------------------------------------------------------------------
a) A set of rules that governs the transmission of data in a communications system. Example is Z-Modem which asks for no acknowledgement when transmitting data therefore using a full-duplex mode of transmission
b) 1. Boolean Searching - IPT + Hardware etc
2. Wildcard Searching - "*" "<>" "?" eg. IPT <> Insurance Protection Tax
3. Logical/Relational Operators: <, >, =<, => and THEN AND NOT
c) - Stress Testing - stretching system to its greatest limits to find any faults
- Direct Conversion - getting rid of old system immediately as not needed.
search engine more advanced then other methods of
searching.
-------------------------------------------------------------------------------------------------------
Question 22
-------------------------------------------------------------------------------------------------------
a) Data Redundancy refers to the inappropriate repetition of data. This is found in the database through the repetition of the borrowers names eg "John Jones"
b) 3 Tables - Item table : Item Number (PK), Item
- Borrowers table: Borrower ID, First Name, Surname, Faculty, Item ID
- Date table: Date borrowed, Date returned
*Links between tables shown and one to many /many to one relation etc (1 and infinity sign)
c) Included Report Header, Page Header, Details, Page Footer, Report Footer
-------------------------------------------------------------------------------------------------------
Question 23
-------------------------------------------------------------------------------------------------------
a) (Had to identify at least 2 of each)
HARDWARE: Monitor, Computer, Mouse, Keyboard, Mouse, Mobile Telephone, Modem, Cables, Facsimile, Firewall
SOFTWARE: ISP Software, Chatting Software, Web Browser, Email Software
COMMUNICATIONS: Link to Internet, Telephone Line connection, Mobile Phone connection, etc
b) Advantages:
- frees up storage space in main office
- reduces costs in main office - electricity and etc
- usage of skills from everywhere
- profits increase business expands
Disadvantages:
- employer cant supervise employee
- if no work being done profits down etc.
- has to buy equipment for employees to put in homes - to be able to work
- loss of social stigma for employees as lose contact with other people - this
can lead to people leaving the job causing problems for employer
c) (This question was weird – no where in syllabus does it say “project management strategies, I think they will have many people writing the communication skills. I think everyone who listed them should get marks because they somehow do act as strategies between the people to “work together effectively”).
- Active listening
- Conflict resolution
- Negotiation Strategies
- Interview Techniques
-------------------------------------------------------------------------------------------------------
Question 24
-------------------------------------------------------------------------------------------------------
a)
Strengths
- Data available anywhere – needed especially in emergencies – near deathsituations – what tablets to give to who in emergency etc.
- Accounts may be updated meaning manual methods are wiped out and
patients may be told on request how much owing.
- Members may save time - allowing them to attend to patients who are in
desperate need.
Weaknesses - Expensive – depending on medical staff
- Maintenance needed
- Invasion of privacy – members of hospital may access private
details
- Invasion of security – private information not secure as member
- Members need to be trained on how to use
b) Some technical issues: -
- People from outside the organisation can access wireless network – hack in (if in range)
- Signal can fade if hospital workers too far from access point.
- Can interfere with other medical equipment
- No back up so if system fails the whole hospital system will be in turmoil
------------------------------------------------------------------------------------------------------
Question 26 – Decision Support Systems
------------------------------------------------------------------------------------------------------
a) i) Visual interpretation of data. Trends may be seen clearer therefore allowing
person to make more well defined decision. Graphs and charts include bar
charts(information year by year can be stacked on vertical boxes), line graphs
(show continuous data), column graphs etc.
ii) An Intelligent agent is a piece of software in which automatically takes out a
intelligent response to a task. These agents are programmed by humans and are
found in many different applications. An example of a intelligent agent is a
SPAM filter found in Email Software. This SPAM filter forwards unsolicited
mail into a Junk Mail box.
b)
i) Decision Tree ***(If anyone wants it PM me)
ii) IF (Did the whale have flukes) = Yes AND IF (Did the whale have a dorsal fin) = No AND IF (What was the size of the whale?) = Medium AND IF (Were one or two blows visible at the same time) = Two THEN (The whale is a) = Gray Whale
c) Ran Out of time in this question. Wrote about 1/5 of answer.
-------------------------------------------------------------------------------------------------------
Question 28 – Multimedia Systems
-------------------------------------------------------------------------------------------------------
a) i) Morphing is a type of animation in which allows one picture to be blended into another. An example of its use is the inclusion of images in multimedia system where human attributes are blended with animals to give affect. This is found with the morphing of a man’s body with a horse’s legs.
ii) The Sampling Rate may be described as how many types an audio file is sampled per unit of time. The higher the sampling rate the more better quality the file is. CD quality music’s sample rate is much larger than the sample rate of audio found on the Radio.
b) i) Video, Audio, Images Text – rest pretty straight forward
ii) - Presentation Software
- Authoring Software
- Web-site publishers
- HTML Coding Software
- Animation Software
( + definitions)
c) Developments:
- Mobile phones – video calling, video cameras/still cameras, 3rd generation
mobiles
- Video camcorders – mini tapes, CD’s it can tape on. This media can be
htransferred onto computer
- Output devices – projectors, LCD monitors etc
- The Internet – media storm. Allowed people to view media, send, create
Issues and Implications
- Merging of technologies : mobile phones with cameras – used for illegally taking photos of credit card numbers/ nude beaches
- Appropriate use of Internet : pornography – images and videos unethical: minors have access to it
- Data integrity – with so many versions of information, data matching has been used to ensure data is correct. Etc
- Copyright laws have been violated etc.
Last edited:
lol
