Ch 5&6 Exam 2
Microsoft Windows 1.0 was introduced in 1986 and cost about _____ USD.
$99
Microsoft Word can be used to create and edit formatted text. That formatted text is normally saved in which kind of file to enable subsequent editing of that formatted text by Microsoft Word?
.doc or .docx
Suppose a song is 200 seconds, that a digital recording sampled the audio 50,000 times per second, and each sample is stored in 1 byte. How many bytes are needed to digitally store a song
10,000,000
Given the following uncompressed text, which is a more reasonable LZ dictionary? "Mark Smith, 100 Main St., Smithville"
1: Ma, 2: Smith
Video consists of a series of still pictures (frames) that should be shown at a rate of at least _____ frames per second so that humans don't notice the individual pictures and instead see smooth video.
25
A spreadsheet's columns and rows are labeled with letters and numbers. Which represents the cell 5 rows down and 3 columns to the right?
35
An audio recording app stores audio in a file consisting of _____.
Analog audio converted to digital values (numbers)
_ started Microsoft in 1975 to develop the BASIC programming language for a particular type of PC.
Bill Gates and Paul Allen
A given Huffman dictionary is 01: a, 001: b, and 000: c. What do these bits represent (decoding from left to right)? 00000000101
CCBA
Which is NOT a common use of spreadsheets?
Creating formatted text, like a resume that nicely shows a person's education/experience
A user wishes to keep a record of all employees that work at a company, and to quickly be able to get answers to questions like "Which employees earn over $50,000?" or "How many employees live in California?". Which application is best suited?
Data Base app
Which of the following is NOT a task likely to be carried out by an operating system?
Edits video and audio files.
Which is NOT a key item that a presentation app helps a user create, for display on slides?
Formatted Text
Windows is a _____ OS developed by Microsoft in the mid-to-late 1980s.
Graphical
____ is a graphical operating system developed by Apple in 2007 for Apple smartphones and tables.
Ios
A device driver is typically part of the computer's _____ .
OS
PDF stands for _____ Document Format
Portable
An operating system is a _____ that carries out detailed interactions with hardware on behalf of applications, such as reading data from a keyboard or displaying data on the screen.
Program
Being a good OS user does NOT include which of the following?
Running apps for long periods so the memory leaks and the memory's contents are refreshed
Which are the two key benefits of compressing an image file?
Smaller files, faster transfers
A good two-step troubleshooting process starts with predicting a problem, then testing to confirm or deny the prediction (repeating as needed). A smartphone user wearing a headset doesn't hear a youtube video's audio. Which is a prediction of the problem?
The headset may not be plugged in all the way
_____ is a text-based operating system developed in the late 1960's.
Unix
Email is a type of _____ that a user runs to carry out a particular task, such as sending or receiving messages.
application (or app)
A zip file can group multiple files into one file, and commonly may also include _____ of those files.
compressing
Moving files to the trash or recycle bin ____
doesn't actually delete files from the drive
The term _____ refers to organizing items on a hard drive or other storage device.
file Management
Which is most likely a presentation file?
filename.pptx
A(n) _____ is a group of files or folders that help a user to organize items.
folder
On a drive, a _____ is a container used to store files
folder
A word processor is primarily intended for enabling a user to create _____.
formatted text
Modern operating systems use a _____ interface which allow pointing devices like a mouse.
graphical user
Which of the following is NOT a common kind of text formatting?
image
Web browsers make local copies of a web page's _____ to speed loading for subsequent visits.
images
Finder and Windows Explorer are examples of applications that provide a way for users to _____.
move, delete, and create file/folder/app items on a drive
A user runs a command to find all entries in a database whose "year" field is 2016. Such a command is called a _____.
query
Quitting unused apps on a smartphone or tablet can ___
reduce CPU usage, improve battery life, and free up memory
A user's laptop is running unusually slowly. After not finding any obvious reasons like a runaway application, the most reasonable next attempted fix by the user would be _____ .
restart the laptop
A device driver is _____.
software that interfaces with hardware devices, such as a screen, keyboard, or printer
A device driver for a printer might send print commands that are _____.
specific to a particular printer
Video files could be huge, so compression is used. The main idea of video compression is _____ .
storing only the difference between one frame and the next
