WorksheetsIntroduction to Computer Science
Total questions: 15
Worksheet time: 5mins
What is a computer?
It is a programmable machine or device that is used to process information.
It is a machine that is used only to store files.
It is a machine that allows us to reduce the effort to learn through its copy and paste mechanism.
It is a machine or device that can be used only to compute.
The CPU of a computer is composed of
the arithmetic-logic unit and main memory
the arithmetic-logic unit and the control unit
the control unit and the secondary storage
the arithmetic logic unit, the main memory and the buses
Select among these features for main memory the one that is NOT correct
It is divided into "memory words"
It is used to process/execute information, both data and instructions
A program must be stored in it to be able to be run
Its capacity is expressed in multiples of a byte.
Software can be classified into
System software, programming software, and application software
Operating systems, drivers and diagnostic tools.
Enterprise and freeware
Operating systems and applications
Within which type of software can we classify Android or iOS?
Development software
Application and operations software
Application software
System software
Which one of the following is not an application software
MS Word
MS Windows
MS Powerpoint
MS Excel
The network that we use in our practice classroom is considered to be
A personal area network (PAN)
A campus area network (CAN)
A Local Area Network (LAN)
An Internet
How many different numbers is it possible to represent in 1 byte
128
8
256
16
ASCII code is used to represent characters using:
8 bits per character
1 decimal number that represents its position in the alphabet
8 bytes per character
letters and numbers
Please select the correct sentence regarding images
The more pixels a vector image has the better quality the image will be.
Bitmap images can be enlarged as much as we want without losing quality.
Vector images usually take up less space than bitmap images.
In a color image, each pixel stores 2 numerical values: one is the color and the other the transparency.
Indicate which types of memory are correct:
ROM memory
RUM memory
REM memory
RIM memory
The arithmetic logic unit (ALU) is responsible of...
Execute instructions for the computer programs
To perform basic arithmetic, logical, and / or relational operations
To retrieve and store data from the main memory to be processed
To generates control signals addressed to all the units
Check the option that is correct regarding computer working components
An HDD hard disk is faster than an SSD
The control unit is responsible for performing the arithmetic calculations of the instructions
Peripherals that connect directly to the CPU are faster
The hardware usually communicates with the operating system through the drivers.
Select which ones are NOT Internet services:
Sending mail messages
Scientific calculation
File transfer
Remote access to another computer
Select the sentence related to bitmap images
Can be enlarged as much as you want without losing quality by recalculating the objects
A vector is used to store all the information
Pixels are the smallest elements that can be controlled and encode the color intensity
Mathematical formulas are used to represent the image
