WorksheetsCSP Unit 1-2 Review
Total questions: 70
Worksheet time: 45mins
Which of these configurations does NOT represent a computer network of six devices?
Karen is shopping for her first house. At an open house, a real estate agent calls the house a "smart home" and explains that all of the home appliances are also computing devices that are connected together in a computer network.
What is the benefit of networking the devices together?
The computing devices can share the same power source.
The computing devices can encrypt all the data that they store.
The computing devices can retrieve data from the Internet.
The computing devices can transfer data to each other.
Which of these situations describes a computer network?
A plant biologist inserts a moisture sensor into the soil of a potted plant. The moisture sensor records the moisture every minute and saves it onto an SD card for storage.
A smartphone store displays 20 different smartphones for shoppers to try out. All the smartphones are on a long table and plugged into a single power strip.
A programmer runs a program using parallel computing on their multi-CPU computer. Each CPU processes a different part of the program and stores the final results in shared memory.
A company gives every employee a desktop computer and connects each of the computers to each other using wires, so that they can quickly transfer files and messages.
Which statements are true about computing devices?
#1: All computing devices are able to run computer programs.
#2: All computing devices are capable of being interconnected to form computer networks.
#3: All computing devices have ways to store data for later use.
#1 only
#2 only
#3 only
#1 & #2
#1 & #2 & #3
What is indicated by the lines between the computing devices in this illustration?
The computing devices are all running the same program.
The computing devices are plugged into the same power source.
The computing devices have access to a central database for storing program data.
The computing devices are able to send messages to each other.
Which of these situations describes a computer network?
A video gaming club sets up six powerful computers in a room and connects them with Ethernet cables to a router. The club members play multi-player games together.
An airport provides power outlets next to the seats in the boarding waiting areas. The outlets are constantly in use by passengers charging their laptops and smartphones.
A programmer runs an algorithm on their computer that can play chess. The algorithm efficiently searches through a graph of all the possible moves and subsequent moves and picks the move with the highest probability of winning.
A fashion designer creates a glove that changes colors as your fingers move. The glove embeds flex sensors, a microcomputer, and LEDs. The embedded flex sensors are input sources for the microcomputer, relaying the current angle of a finger bend. The microcomputer then runs a program to determine the color and relays that to the LEDs.
A gardener sets up a network for a garden using a variety of devices:
A smart temperature sensor: It runs a program that checks whether the temperature is above or below the target range for that time of day and then triggers the heating or cooling system when needed.
A security camera: It uses a machine learning algorithm to detect non-plant motion and sends video footage to a computer.
A desktop computer: It generates a graph of the temperature based on data from the temperature sensor and stores video footage from the camera.
A wireless router: It uses networking software to enable the sensor, computer, and camera to send data to each other.
Which of the devices in the network are considered computing devices?
Just the desktop computer
Just the desktop computer and wireless router
The desktop computer, security camera, and router
All of them (the computer, router, camera, and sensor)
Jesse purchases a new smartphone and is immediately able to use it to send a photo over the Internet to a friend who lives in a different country. Which of the following is NOT necessary to make this possible?
Both devices are using the same shared and open protocols
A single direct connection is established between any two devices connected to the Internet
The data of the image is routed through a sequence of directly connected devices before arriving at its destination.
Both devices are directly connected to at least one part of the Internet
Answer
This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection. What is the MINIMUM number of paths that would need to be broken to prevent Computing Device A from connecting with Computing Device E?
1
2
3
4
This diagram shows a number of computing devices connected to the Internet with each line representing a direct connection. Device A is attempting to send data over the Internet to Device E. Which of the following is true of how the data will travel through the network?
The data will always travel through Device B as it is the shortest path
The data will never be sent to Device G since there are other shorter paths available
It is possible that the data travels through any of the devices in the network before arriving at device E
If the data travels through Device D then it will not travel through Device B
Answer
A machine that can run a program, including computers, tablets, servers, routers, and smart sensors
Computing
Computing Device
Computing Network
Computing System
A group of computing devices and programs working together for a common purpose
Computing
Computing Device
Computing Network
Computing System
A group of interconnected computing devices capable of sending or receiving data.
Computing
Computing Device
Computing Network
Computing System
The series of connections between computing devices on a network starting with a sender and ending with a receiver.
Internet
Path
Routing
World Wide Web
Which of the following best describes how computing devices represent information?
A computer will either represent information as bits or bytes but not both
A computer represents data as a byte which is either a 0 or a 1
A computer represents data as bits which is either a 0 or a 1
A computer represents information as bits which contain 8 bytes.
Which of the following are true about how analog data is converted to digital data?
The digital version is a representation of the analog, but cannot contain all of the details.
To make the digital version be a more accurate representation of the analog data, the process should use fewer bits to represent each sample.
A longer interval between measured samples means more details will be captured in the conversion from analog to digital.
The digital version contains all of the details of the analog data, as long as enough storage capacity is available.
How many bits are in two bytes of data?
4
8
12
16
The binary number 1001 is equal to what in decimal?
1,001
17
8
9
The digit C in hexadecimal is equivalent to what in decimal?
12
13
3
2
With 8 bits of data, what is the largest decimal number that can be represented in binary?
256
1111 1111
255
1000 0000
The number 43, when represented in binary is
0100 0011
1010 1101
0010 1011
0011 0001
A computer program is using 4 bits to represent an integer. When the program adds the decimal numbers 10 and 6, the result is 0000. Which of the following describe the result? (Select all that apply)
The number 16 in decimal is 0000 in binary.
An overflow error occurred.
a roundoff error occurred.
You cannot represent the number 16 with 4 bits.
A computer uses 3 bits of data to represent a number. What is the smallest number that would cause an overflow error in this situation?
4
7
8
9
ASCII is an abstraction because
it allows the user to know the binary code for each character.
the user can type letters and other characters without knowing the binary code assigned to them.
it helps the user convert the decimal representation of a letter to the binary representation for the letter.
the user can read a binary message and translate it into characters.
Which of the following statements about sampling is incorrect?
Sampling is a process that can be used to compress an image.
Sampling is a process for turning an analog image into a digital image.
When smaller samples are used, the resulting file will require fewer bytes.
Each pixel of the analog image is coded as one color, and cannot be more than one color.
Given the hexcode A3BD02, which of the following describes the "blue" part of the pixel?
A3
30
B2
02
What is the difference between Lossy and Lossless compression?
With Lossy compression, none of the data is lost.
With Lossless compression, a file cannot be decompressed to its original state.
Lossless compression will usually reduce a file size less than Lossy compression.
Lossy compression is reversible.
Which of the following is most likely to be an unethical use of computer resources?
Purchasing an app and downloading it to a smartphone.
Downloading open source software to your computer.
Purchasing a single-user copy of a photo editing software and sharing your login with another person.
Purchasing a stock photo and putting it in a newsletter that is distributed to a large group of people.
Given the color hex code #A30FB9, which of the following is true?
The red portion of the color is A3
The blue portion of the color is 0F
The green portion of the color is B9
We cannot determine what level each color is at from this information.
A new or improved idea, device, product, etc, or the development thereof
Epiphany
Inspiration
Innovation
Flux Capacitor
A simple sketch of an idea or model for something new. It’s the original drawing from which something real might be built or created.
Sample
Prototype
Art
Product
It refers to facts provided or learned about something or someone / It is data as processed, stored, or transmitted by a computer / It is the answer to a question.
Data
Information
Binary Sequence
Trend
A set of rules governing the exchange or transmission of data between devices.
Protocol
Transfer
Pattern
Phone Call
A way of representing information using only two options.
Binary
Decimal
Hexadecimal
Octal
A contraction of "Binary Digit"; the single unit of information in a computer, typically represented as a 0 or 1
Computer
Transistor
Byte
Bit
8 bits
Byte
Nibble
Kilobyte
Megabyte
It’s the numerical value that a digit has by virtue of its position in a number.
Place Value
Bit
Digit
Absolute Value
Error from attempting to represent a number that is too large.
Overflow Error
Roundoff Error
Logic Error
ASCII
Error from attempting to represent a number that is too precise. The value is rounded.
Overflow Error
Roundoff Error
Logic Error
ASCII
A simplified representation of something more complex. They allow you to hide details to help you manage complexity, focus on relevant concepts, and reason about problems at a higher level
Image
Binary
Protocol
Abstraction
American Standard Code for Information Interchange; the universally recognized raw text format that any computer can understand.
Abstraction
Binary
ASCII
Protocol
A type of data used for graphics or pictures.
Audio
Sampling
Image
Text
It is data that describes other data. For example, a digital image may include metadata that describes the size of the image, number of colors, or resolution.
Pizzadata
Infodata
Megadata
Metadata
short for "picture element", the fundamental unit of a digital image, typically a tiny square or dot that contains a single point of color of a larger image.
Pixel
Box
Bit
Square
Data with values that change continuously, or smoothly, over time. Examples of it include music, colors of a painting, or position of a sprinter during a race.
Analog Data
Digital Data
Meta Data
Placement Data
Data that changes discreetly through a finite set of possible values
Analog Data
Digital Data
Meta Data
Placement Data
A process for creating a digital representation of analog data by measuring the analog data at regular intervals called samples.
Prototyping
Measuring
Sampling
Intervaling
This color model uses varying intensities of (R)ed, (G)reen, and (B)lue light added together to reproduce a broad array of colors.
RGB
Hex
ITP
LOC
A process for reducing the number of bits needed to represent something without losing any information. This data compression algorithm allows the original data to be perfectly reconstructed from the compressed data. This process is reversible.
Lossless
Lossy
Tailored
Parallel
A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This data compression method uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg. This process is not reversible.
Lossless
Lossy
Tailored
Parallel
a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.
Solution
Analytical
Heuristic
Compromise
A work or invention that is the result of creativity, such as a piece of writing or a design, to which one has rights and for which one may apply for a patent, copyright, trademark, etc.
Art
Intellectual Property
Open Source
Copyright
It is the exclusive legal right that a creator has to reproduce, publish, sell, or distribute his/her intellectual property (literary, musical, or artistic work).
Intellectual Property
Open Source
Copyright
Creative Commons
A collection of public copyright licenses that enable the free distribution of an otherwise copyrighted work, used when an author wants to give people the right to share, use, and build upon a work that they have created.
Intellectual Property
Copyright
Creative Commons
Open Source
no rights reserved creative commons license (CC0)
Allowing people to use your work as long as they give you credit
Allowing people to use your work, but not edit it
Allowing people to use your work as long as they don't monetize it.
Relinquishing all copyright and similar rights that you hold in a work.
programs that are made freely available and may be redistributed and modified.
Open Source
Open Access
Creative Commons
Copyright
online research output free of restrictions to access and use.
Open Source
Open Access
Creative Commons
Copyright
Lossless Compression
a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.
a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg.
None of the above
A type of data used for graphics or pictures.
Boolean
ASCII
Text
Image
The fundamental unit of a digital image, typically a tiny square or dot that contains a single point of color of a larger image.
Dot
Square
Circle
Pixel
Data that describes other data
Metadata
Smalldata
Bigdata
Datadata
Lossy Compression
a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.
a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg.
None of the above
Internet Protocol
Protocol that breaks data down into packets and addresses them with source and destination information
A DNS attack in which numerous pings are made to the same IP, causing it to crash
Protocol used by the World Wide Web. It describes how messages are formatted and interchanged, and how web servers respond to commands.
Protocol that provides reliable, ordered, and error-checked delivery of a stream of packets on the internet
How many bits are in an IPV4 address?
32
64
128
256
