Introduction to Computer Science

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.