30 Questions
What is the approximate size of a digital photo in terms of Mbytes?
10 Mbytes
What is the purpose of virtual memory?
To make the RAM appear bigger by storing some programs temporarily on disk
What is the characteristic of a lossless compression method?
It recovers the exact original image or text
What is the approximate size of a scanned page in terms of Mbytes?
128 Mbytes
What is the problem that leads to the need for virtual memory?
Running lots of programs and each program is large
What is the approximate size of a video in terms of Mbytes per second?
10 Mbytes per second
What is a consequence of the decentralization of computing power?
Key decision-making power remains centralized
What is an example of computer abuse?
Using a computer system for unethical acts, not illegal
What is a health risk associated with computer use?
All of the above
What is a critical feature of printing resolution?
Size and spacing of the dots
What is a negative consequence of the lengthening of the workday due to computing and internet use?
Infringement on family and personal time
What is a consequence of businesses' dependence on computer systems?
Increased vulnerability to computer crime
What is the main purpose of compression techniques in image and audio/video storage formats?
To reduce the storage requirements of the media
What is the main difference between SGML and XML?
XML is simpler than SGML
What is the purpose of indexing in large information stores?
To make searching faster
What is the main advantage of forgiving systems like Xerox's 'do what I mean' (DWIM)?
They are more flexible
What is the main disadvantage of free text indexing?
It takes up too much space
What is the purpose of using ASCII and UTF-8 in text storage formats?
To encode text using a binary code
What is the typical resolution range for scanners?
600-2400 dpi
What is the limitation of interactive performance caused by a bottleneck in the transference of data from disk to memory?
Storage channel bound
What is the main advantage of optical disks over magnetic media?
Greater robustness
What is the common bottleneck in interactive performance that is sometimes helped by adding a graphics co-processor?
Graphics bound
What is the primary purpose of groupware?
Collaboration with other people
What is the purpose of Optical Character Recognition (OCR)?
To convert bitmap images into text
What is the primary difference between a flat-bed scanner and a hand-held scanner?
Scanning method
What is the protocol that ensures a reliable channel between programs on machines?
IP
What was the primary purpose of the original DARPANET in 1969?
To create a network for the US Department of Defense
What is the typical access time for RAM?
100 nano-seconds
What is the primary concern of network delays in interactive performance?
Slow feedback
What is the primary use of Flash-Memory?
Memory storage for PDAs and cameras
This quiz covers the moral dimensions of information systems, negative social consequences of systems, decentralization of computing power, and the impact of technology on work-life balance.
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