Intro To Computer Science (Alpha)
Intro and exit of class quiz
Questions and Answers
- 1.
What is a common way to measure the speed of a Processing Unit
- A.
GHz
- B.
Gb
- C.
MB
- D.
Lbs
- E.
Mem
Correct Answer
A. GHzExplanation
GHz stands for gigahertz, which is a unit of measurement used to quantify the speed of a processing unit. It measures the number of billions of cycles per second that a processor can execute. A higher GHz value indicates a faster processing speed, as the processor can complete more instructions in a given amount of time. Therefore, GHz is commonly used to measure and compare the speed of processing units in computers and other electronic devices.Rate this question:
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- 2.
Which of these use "lossless" compression (choose three)
- A.
GIF
- B.
FLAC
- C.
JPEG
- D.
MP3
- E.
PNG
Correct Answer(s)
A. GIF
B. FLAC
E. PNGExplanation
GIF, FLAC, and PNG use "lossless" compression. GIF is a file format commonly used for images and animations, and it uses a lossless compression algorithm that preserves all the original data. FLAC is a lossless audio codec, which means it compresses audio files without sacrificing any audio quality. PNG is a lossless image format that supports high-quality graphics and transparency. On the other hand, JPEG and MP3 use "lossy" compression, where some data is discarded to achieve higher compression ratios, resulting in a loss of quality.Rate this question:
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- 3.
What is the function of RAM in a computer
- 4.
Define GPU and CPU and explain their typical uses
- 5.
How many “Frames per Second” is shown in a standard NTSC video
- A.
5.5
- B.
15.0
- C.
29.97
- D.
48.0
- E.
120.1
Correct Answer
C. 29.97Explanation
The correct answer is 29.97. NTSC (National Television System Committee) is a standard for analog television broadcasting used in North America, Japan, and some other countries. NTSC video typically runs at 29.97 frames per second (fps), which is slightly lower than the standard 30 fps. This frame rate was chosen to match the frequency of the alternating current used in these regions (60 Hz).Rate this question:
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- 6.
Define “DPI” and it’s use
- 7.
What is a common resolution for a computer monitor
- A.
320x240
- B.
1024x768
- C.
3600x2150
- D.
524x524
- E.
12800x10240
Correct Answer
B. 1024x768Explanation
A common resolution for a computer monitor is 1024x768. This resolution refers to the number of pixels displayed on the screen horizontally and vertically. It is a widely used resolution that provides a balanced aspect ratio and is compatible with most software and applications. This resolution offers a good balance between screen real estate and readability, making it suitable for various tasks such as web browsing, document editing, and multimedia consumption.Rate this question:
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- 8.
What type of cable is used for modern networking
- A.
Cat3
- B.
Coax
- C.
Composite
- D.
Cat5
- E.
Cross-linked polyethylene
Correct Answer
D. Cat5Explanation
Cat5 cable is used for modern networking. It is a type of Ethernet cable that is commonly used for connecting devices in a local area network (LAN). Cat5 cables are capable of transmitting data at speeds up to 1000 Mbps and can support both voice and data communication. They are widely used for internet connections, computer networks, and telephone systems. Cat5 cables are known for their reliability, durability, and ability to minimize interference, making them suitable for modern networking requirements.Rate this question:
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- 9.
Define “Codec” and it’s purpose
- 10.
Which of these is an Operating System (pick three)
- A.
A. Red Hat Linux
- B.
B. Microsoft Office
- C.
F. Apple OSX
- D.
E. Microsoft Windows
- E.
D. Microsoft Visual Basic
Correct Answer(s)
A. A. Red Hat Linux
C. F. Apple OSX
D. E. Microsoft WindowsExplanation
The three options that are operating systems are Red Hat Linux, Apple OSX, and Microsoft Windows. Operating systems are software that manage computer hardware and software resources and provide common services for computer programs. Red Hat Linux, Apple OSX, and Microsoft Windows are all examples of operating systems that are widely used in different devices and platforms. Microsoft Office and Microsoft Visual Basic, on the other hand, are productivity software and programming languages respectively, and not operating systems.Rate this question:
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- 11.
The best way to move some text to another part an essay would be to (select two)
- A.
Delete the text and then re-type it.
- B.
Highlight the text, and then drag it into place with the mouse.
- C.
Highlight the text, and press the up or down arrows to move it.
- D.
Highlight the text, right-click, and use the "Cut" and "Paste" functions.
- E.
Highlight the text, press ctrl-x then select the place you would like to text to appear and press ctrl-v
Correct Answer(s)
D. Highlight the text, right-click, and use the "Cut" and "Paste" functions.
E. Highlight the text, press ctrl-x then select the place you would like to text to appear and press ctrl-vExplanation
The correct answer is to highlight the text, right-click, and use the "Cut" and "Paste" functions, as well as to highlight the text, press ctrl-x then select the place you would like the text to appear and press ctrl-v. These are the most efficient and commonly used methods to move text within an essay.Rate this question:
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- 12.
If you are doing research for an essay, and you use some information from a website in your essay, you must
- A.
Do nothing. You can use this material in your essay freely.
- B.
List the website in a bibliography at the end of your essay.
- C.
Type the information in bold letters.
- D.
Type the information in italic letters.
Correct Answer
B. List the website in a bibliography at the end of your essay.Explanation
When doing research for an essay, it is important to properly cite the sources used. This allows readers to locate the original information and gives credit to the author or website. Listing the website in a bibliography at the end of the essay is the correct way to acknowledge the source and provide a complete reference for readers. This ensures academic integrity and avoids plagiarism.Rate this question:
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- 13.
If you wanted to create an animated presentation, what would be the BEST program to use?
- A.
Excel
- B.
Power Point
- C.
Word
- D.
Access
- E.
Outlook
Correct Answer
B. Power PointExplanation
PowerPoint is the best program to use for creating an animated presentation. It is specifically designed for creating slideshows and presentations, allowing users to easily add animations, transitions, and other visual effects to their slides. Excel is a spreadsheet program, Word is a word processing program, Access is a database management program, and Outlook is an email and personal information management program. While these programs may have some limited capabilities for creating presentations, PowerPoint is the most suitable and widely used program for creating animated presentations.Rate this question:
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- 14.
If you wanted to add an image from Google to an essay or a presentation, how would you do this? (select two)
- A.
You must download the image directly into the document.
- B.
Save the image into a folder, and then select "Insert Image" on the essay or presentation.
- C.
Right-click the image, select "Copy," then right-click in your essay or presentation and select "Paste."
- D.
Drag the image from the browser to your document.
- E.
This cannot be done, you must have the picture on your local computer to begin with.
Correct Answer(s)
B. Save the image into a folder, and then select "Insert Image" on the essay or presentation.
C. Right-click the image, select "Copy," then right-click in your essay or presentation and select "Paste."Explanation
To add an image from Google to an essay or presentation, you can save the image into a folder and then select "Insert Image" on the document. Alternatively, you can right-click the image, select "Copy," and then right-click in your essay or presentation and select "Paste." Both of these methods allow you to include the image without downloading it directly into the document or having the picture on your local computer beforehand.Rate this question:
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- 15.
Which of these is NOT an "input" device.
- A.
Mouse
- B.
Keyboard
- C.
Tablet
- D.
Printer
- E.
Joystick
Correct Answer
D. PrinterExplanation
A printer is not considered an "input" device because it is used to produce a physical output, such as a printed document or image, rather than taking in or receiving data from the user. Input devices, on the other hand, are used to input or enter data into a computer system. Examples of input devices include a mouse, keyboard, tablet, and joystick, as they allow the user to interact with and provide input to the computer.Rate this question:
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- 16.
Which of the following requires the greatest bandwidth?
- A.
VOIP (voice over IP internet phone service)
- B.
Accessing a huge encyclopedia like Wikipedia
- C.
Streaming high definition video
- D.
Online testing
- E.
Downloading historic speeches
Correct Answer
C. Streaming high definition videoExplanation
Streaming high definition video requires the greatest bandwidth because it involves transmitting large amounts of data in real-time. High definition video requires more bandwidth compared to other activities listed, such as VOIP, accessing an encyclopedia, online testing, or downloading historic speeches. Streaming video requires a fast and stable internet connection to ensure smooth playback without buffering or interruptions.Rate this question:
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- 17.
Which of the following is NOT true about the pictured memory storage device
- A.
Physical shocks may destroy the memory of this devices
- B.
This is a hard disk drive
- C.
This device will provide random access to stored items
- D.
This is an example of solid state memory
- E.
The head on the arm moves back and forth as the disk spins, reading and/or writing data.
Correct Answer
D. This is an example of solid state memoryExplanation
The given statement "This is an example of solid state memory" is not true about the pictured memory storage device. Solid state memory refers to a type of storage device that uses electronic circuits to store and retrieve data, such as flash drives or solid state drives (SSDs). The pictured device appears to be a hard disk drive (HDD), which uses spinning disks and a moving arm with a head to read and write data. Therefore, it is not an example of solid state memory.Rate this question:
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- 18.
Which of the following represents the largest amount of data
- A.
Gigabyte
- B.
Terabyte
- C.
Kilobyte
- D.
Petabyte
- E.
Megabyte
Correct Answer
D. PetabyteExplanation
A petabyte represents the largest amount of data among the options given. A petabyte is equal to 1,000 terabytes or 1,000,000 gigabytes. It is a unit of measurement used to quantify large amounts of digital information, such as data storage capacity or data transfer rates.Rate this question:
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- 19.
Which of the following communication term pairs are not paired correctly?
- A.
IR - radio transmission
- B.
Bluetooth - PDA and cell phone syncing
- C.
802.11 - Wi-Fi
- D.
Ethernet – Local Area network
- E.
Wi-Fi - Wireless networks
Correct Answer
A. IR - radio transmissionExplanation
The term "IR" typically refers to infrared communication, which uses infrared light waves to transmit data. On the other hand, "radio transmission" refers to the use of radio waves for communication. Therefore, the pair "IR - radio transmission" is not paired correctly as they represent different methods of communication.Rate this question:
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- 20.
Digital electronic circuitry works in binary. Which of the following is not a binary representation.
- A.
1010101010
- B.
Visible spectrum of light (infrared through ultraviolet)
- C.
Logic gates (true / false)
- D.
Scantron (graphite mark / no graphite mark)
- E.
Punch card (hole punched or not punched)
Correct Answer
B. Visible spectrum of light (infrared through ultraviolet)Explanation
The given options represent different examples of binary representation except for the visible spectrum of light (infrared through ultraviolet). Binary representation consists of only two possible values, typically represented as 0 and 1. In the options provided, 1010101010, logic gates (true/false), Scantron (graphite mark/no graphite mark), and punch card (hole punched/not punched) all follow the binary pattern where there are only two possible states. However, the visible spectrum of light includes a range of different wavelengths and colors, which cannot be represented as a binary sequence.Rate this question:
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- 21.
Which of the following is an example of analog, rather than digital data
- A.
A scanned file of sheet music
- B.
An Excel file
- C.
An original painting by Monet
- D.
A video transmission while teleconferencing
- E.
The image of your computer pictured above
Correct Answer
C. An original painting by MonetExplanation
An original painting by Monet is an example of analog data because it is a physical representation of the artist's brushstrokes and colors. Analog data is continuous and can have infinite variations, while digital data is discrete and represented by binary code. The other options, such as a scanned file, an Excel file, a video transmission, and an image of a computer, are examples of digital data as they can be represented and stored in binary code.Rate this question:
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- 22.
The main area where the information is stored within the computer.
- A.
Northbridge Chip
- B.
IDE
- C.
Motherboard
- D.
RAM
- E.
Hard Drive
Correct Answer
E. Hard DriveExplanation
The hard drive is the main area where information is stored within a computer. It is a non-volatile storage device that permanently stores and retrieves digital information. Unlike volatile memory such as RAM, the hard drive retains data even when the computer is turned off. It provides long-term storage for the operating system, software programs, and user files. The hard drive consists of one or more spinning disks that store data magnetically. It is connected to the motherboard via a data cable and is controlled by the computer's operating system.Rate this question:
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- 23.
What is the meaning of the acronym GUI
- 24.
MicroSoft WORD is an example of
- A.
A game
- B.
A spreadsheet application
- C.
A database Application
- D.
A word processing application
- E.
A graphics application
Correct Answer
D. A word processing applicationExplanation
Microsoft Word is an example of a word processing application. Word processing applications are designed for creating, editing, and formatting text documents. Microsoft Word is a widely used word processing software that allows users to create professional-looking documents with various formatting options, such as fonts, styles, and layouts. It also provides features like spell check, grammar check, and the ability to insert images, tables, and graphs into documents. Overall, Microsoft Word is primarily used for creating and editing text-based documents, making it a word processing application.Rate this question:
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- 25.
A MicroSoft Word document has an extension of
- A.
.xls
- B.
.gif
- C.
.doc
- D.
.ppt
- E.
.jpg
Correct Answer
C. .docExplanation
The correct answer is .doc. The given extensions .xls, .gif, .ppt, and .jpg are used for Excel, image files, PowerPoint, and image files respectively. The .doc extension is specifically used for Microsoft Word documents.Rate this question:
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- 26.
A "Firewall" is used to
- A.
Physical protection for a computer
- B.
Transfer data from one network to another.
- C.
A way to stay warm in a computer lab
- D.
The way tech support can know whether there is a problem with a computer or network
- E.
To protect a network from unwanted or malicious data
Correct Answer
E. To protect a network from unwanted or malicious dataExplanation
A firewall is a security measure that is used to protect a network from unwanted or malicious data. It acts as a barrier between the internal network and the external network, filtering incoming and outgoing traffic based on predetermined security rules. By monitoring and controlling network traffic, a firewall can prevent unauthorized access, block malicious attacks, and ensure the confidentiality, integrity, and availability of the network.Rate this question:
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- 27.
What sort of system uses physical characteristic such as fingerprints, DNA, retinal scanning
- A.
Key Fobs
- B.
Database authentication
- C.
Voice printing
- D.
Biometrics
- E.
Cryptography
Correct Answer
D. BiometricsExplanation
Biometrics is the correct answer because it refers to a system that uses physical characteristics such as fingerprints, DNA, and retinal scanning for identification and authentication purposes. Key fobs are devices used for access control, database authentication involves verifying user credentials against a database, voice printing is a technology used for voice recognition, and cryptography is the practice of securing communication through encryption techniques.Rate this question:
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- 28.
Haptic technology involves what physical sense
- A.
Smell
- B.
Sight
- C.
Taste
- D.
Sound
- E.
Touch
Correct Answer
E. TouchExplanation
Haptic technology involves the physical sense of touch. It refers to the use of tactile feedback and vibrations to create a sense of touch in virtual or augmented reality experiences, gaming, and other interactive systems. This technology allows users to feel and interact with virtual objects as if they were real, enhancing the overall sensory experience. Unlike the other senses listed (smell, sight, taste, and sound), haptic technology specifically focuses on the sense of touch.Rate this question:
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- 29.
In what year was the iPod introduced to the world
- A.
1999
- B.
2000
- C.
2001
- D.
1997
- E.
2004
Correct Answer
C. 2001Explanation
The iPod was introduced to the world in 2001.Rate this question:
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- 30.
Which of these is the top-level domain for Spain
- A.
.sp
- B.
.tg
- C.
.es
- D.
.us
- E.
.eu
Correct Answer
C. .esExplanation
The top-level domain for Spain is .es. The two-letter country code "es" represents Spain and is used for websites and email addresses associated with entities based in Spain.Rate this question:
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