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Computers Question Bank 3
Terms in this set (112)
everything happens and is stored here. local machine doesn't permanently store anything
software that anyone can view, copy, or change. usually free
Voice over IP (VoIP)
used to refer to using the internet to make phone calls, now used for video calls and texting
BTB 180: Based on Blown To Bits, Public-key cryptography made which of the following possible? Select the most significant answer.
made electronic commerce possible
BTB 181: What are the most important properties of one-way computation?
can be done quickly but can't be undone quickly
BTB: 187: On the WEB, when you enter passwords, it is very important that your system switches from http:// to a protocol where your information is protected and secure. What is this protected protocol?
BTB 188: What are the "Crypto Wars" mentioned in the Blown to Bits chapter?
law enforcement and national security ( argued need for encryption controls) vs technology companies and civil liberties groups (didn't want government interference)
COM 108: What is an operating system (OS)?
"executive manager" of your computer
manages information storage (file system), communication between programs and IO devices (keyboard and display), and computer housekeeping
COM 110: The core component of the Operating System that controls the execution of all the many programs that may be running in the computer is called the...
COM 139: Rules for exchanging information to assure it is done without errors are called...
COM 141: A communication system where information is broken into small messages before being sent is called ...
packets in a packet switching system
The two most common ways of interfacing to a computer are
a. clicking on an icon
b. typing a request on a keyboard
Typing a request on a keyboard is called...
SysRq (system request)
COM 204: The three concerns for designing a human-computer interaction are:
a. Can I use the system to do what needs to be done
b. Can I do it easily
c. Will I be satisfied with the result
These three parts can be combined into a single concept called...
usability, design rules
COM 209: Usability is
learnability, informativeness, flexibility (how easy is it to learn the system even if you've never used a computer before)
What is the idea behind Games With A Purpose? Which are the important aspects of designing a game with purpose?
Get people to do work that a computer cannot do, but make it fun.
- Throughput = productivity of game
- ALP= average amount of time game will be played by an individual
- Expected contribution = throughput multiplied by ALP
The term used for the process of gathering significant data about our personal lives is
What is the essential process used to provide secure communications on the Internet?
What is the term for when there are horizontal black bars displayed on the screen?
It is possible with interlaced scans that fast motion can appear blurry. Such an image is said/considered to be:
HDTVs only display images in their native resolution. A received image of a different size is converted to native resolution by.
What is the term for when there are vertical black bars displayed on the screen?
The process used to exchange a secret shared key over an insecure communication channel is known as the ______________ Key Exchange.
The bug created in 2011 that allows hackers to access encryption keys used by https:// is:
A technique used to help understand data through graphical means is called:
The QWERTY keyboard was designed to slow down touch typists. A better designed keyboard is the?
The standard sampling rate per second for CD quality music is?
Human speech would be considered what type of data?
audio non-coded data
Magnetic Ink Character Recognition (MICR) is used in which application?
What are some examples of non-coded data?
not always same exact output: voice, audio file, song, speaking, pixelated image
Universal Product Codes (bar codes) would be considered which type of data?
Data that varies based on the environmental characteristics such as light, temperature, volume,
pressure, motion would be considered which type data?
What percent of the time does the letter E appear? What novel was written without using the letter E?
13%, Gadsby by Wright (267 pages without the letter e)
An ASCII document has 10 lines of text and each line has 30 characters.
How many Bytes of storage are needed to hold this document?
300 bytes (characters*lines)
An ASCII document has 30 lines of text and each line has 70 characters. How many documents can be stored on a storage device that has a 1.5 million byte capacity?
1.5 mil/2100 --> 714,285 docs
A process to reduce the number of bits used to represent information is known as ...
What are some of the current uses of data compression?
reduces time and money:
texting, financial data, programs (lossless)
telephone, tv (lossy)
You are using lossless data compression to compress a spreadsheet. What is the most likely compression ratio you could achieve?
A reasonable compression ratio for video would be ...
A reasonable compression ratio for voice would be ...
How many different characters (upper and lower case letters, numbers, punctuation, etc.) can be represented using the ASCII-8 code?
256 characters and 16 bits
A friend gives you a computer file that is in ASCII format. It most probably contains which of the following?
Which binary value represents ASCII character uppercase "A"?
A more updated code that has the ability to store 65,536 characters is known as which of the following?
What were the total sales of computer and video games in the US in 2013?
What is the average age of a game player?
What are causal games and what are their characteristics?
simple gameplay, familiar genre (card or board game), short bursts
What type of games are the most popular?
What percent of Americans play games?
Are there more male or female game players?
male, slightly (52% male, 48% female)
The government filed its antitrust suit against Microsoft in the year...
1998, abused power so it had to be split into windows and other software
AT&T was originally one large company providing the nation's local and long distance telephone service. In which year was it split into separate regional companies for local service and one company for long distance service?
1968 with the Carterphone Decision
What is similar about Cable Modems and Asymmetric Digital Subscriber Lines?
both approximate speed range Mbits/s based on cost
A newer way for providing voice telephone service using the same cable that you use to receive your TV channels is known as?
What is the name of the 1968 decision made by the FCC that was key to opening up competition in the communications industry?
The WI-FI system that provides service to a whole city is called...
The term for a company that provides communications services is...
The dial-up voice telephone network was designed to transmit approximately which range of analog frequencies?
The dial-up telephone network was designed to transmit which kind of signal?
The term for putting false charges on someone's telephone bill is...
Which physical communications media will support the fastest data transmission rate?
optic fiber cables
Which network was developed by IBM to avoid collisions of messages and to have predictable performance?
Token Ring developed in 1985
The most common media for connecting your land line telephone to a central office is...
twisted copper wire pairs.
When 2 modems connect they agree on the protocols to use. This is called...
The term used to describe high-speed networks is...
What company is installing ultra-high speed fiber service to the home?
google, Google Fiber
The physical media that is not affected by electrical noise is...
optic fiber cables
The term for changing a customer's long distance carrier without their permission is...
When two Ethernet terminals send at the same time, the packets interfere with each other. This is called a...
With which type of computer communications network would you be allowed to install your own
An example of a short distance network used for consumer devices is...
Which network has these characteristics:
- All terminals are connected to a single high speed bus
- To send a message, a terminal listens and if it is quiet then it sends...
Ethernet (Xerox, 1973)
Telephone companies offer a high speed internet connection called...
The TeleZapper defeats telemarketing calls by sending a tone indicating...
line is disconnected
Time Warner provides a high speed Internet connection over the same cable that you use to receive your TV channels. It is called...
Wi-Fi access points are called...
What is the network standard for WI-FI?
Geostationary satellites orbit at what distance from the earth?
Global Positioning Satellites orbit at what distance from the earth?
GPS systems use satellites with which type of orbit
How many GPS satellites must the receiver be able to see, at one time, in order to calculate position (longitude and latitude and altitude)?
The distance between Microwave towers is limited to about...
Push to talk CB radio ... would be which type of protocol?
Face to face communications ... would be which type of protocol?
The type of communication that can only send information in one direction is called...
The reverse channel of a half-duplex channel is often used to send...
TV broadcasts ... would be which type of protocol?
The type of communication that allows information to be sent in both directions, but not at the same time is called...
The type of communication that allows information to be sent in both directions at the sametime is called...
The science that deals with designing good human interfaces is...
A GUI interface to a computer implies requests are made by...
an icon (click the symbol)
The OS user interface that was used with IBM punch card systems was...
The first major programming language aimed at business applications was...
COBOL (3rd high level)
The language that merged business and scientific programming was...
High Level (3rd)
The language used when optimization of speed or size is critical is...
Assembler language (2nd)
Which generation of computer languages was the first to allow the programmer to write code using structured English like statements thus significantly increasing programmer productivity?
High Level Languages (3rd)
HTML would be considered which type of language?
Non-Procedural language (4th)
A programmer has decided to write a payroll program in machine code. Which can a programmer expect to achieve when programming in machine code?
low productivity and high error rates
Instructions written in a high level language are translated by a compiler into machine code so that they can be executed by a computer. This machine code is also called...
binary? (assembler language= symbolic machine code)
The term "bug" meaning a program error originated in 1945 when a real bug disrupted thecorrect execution of the Mark I computer. The bug was a(n)...
Before it can be executed, all software must be converted to...
code (language that computer understands)
What does Chief Information Officer (CIO) magazine state as the primary reason for software project failures?
slow development because of changing user requirements
The development process that is becoming popular because it seems to work better in many environments, such as consumer products, is...
build & fix
The type of software development process that would probably be used for software that controls a new jet plane would be...
What is the correct order of steps in the basic Software Development Process?
4. Unit Test
5. System Test
The three variables associated with developing software are:
-schedule for completion
-cost of development
What approach is recommended for successful software development?
set 2, calculate 3rd
Using the basic Software Development Process, about what percent of a developer's time is spent in actually writing code?
You are the Project Manager for a new product. One task is to design a power supply. The engineer who is responsible for designing the power supply only has limited experience with power supplies. Which is the best way to estimate the duration of the task of designing the power supply?
specification & schedule
The longest path through a project's schedule is called the?
We establish a series of events at fixed intervals throughout the task's duration. Completion or non-completion of these events tells whether the task is on schedule. These events are called which of
The order of task completion is contained in the?
the schedule, Program Evaluation Review Technique (PERT)
The list of all required tasks in a project is contained in the?
Work Breakdown Structure (WBS)
I have estimated 10 weeks to complete a task. Which is the best schedule for the binary events used to determine if the task is on schedule?
1 event per week, 1 check in per week (milestones at 10% intervals)
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