OD41

13 November 2025

CompTIA Tech+: Essential IT Knowledge

 

Question:

During information processing, data passes through various stages. If the system receives incorrect data, what is the most likely immediate result?

The output generated will be inaccurate or unreliable


Question

:

Which facts are true about Unicode compared to ASCII?

Unicode encoding includes emojis and various symbols

All ASCII characters are included in Unicode for compatibility

Unicode can represent characters from multiple languages worldwide


Question

:

Which best explains how IT supports modern businesses?

IT helps automate tasks and improve accuracy


Question

:

Which number system uses both numbers and letters (A–F) to represent values and is commonly used in memory addresses and color codes?

Hexadecimal


Question

:

Which are valid steps when converting a decimal number to binary?

Record the remainders from each division

Read the remainders from bottom to top

Divide the number repeatedly by 2


Question

:

Which devices are considered specialized output devices for specific professional tasks?

3D printers for medical and design applications

Plotters for architectural drawings

Projectors for classroom and entertainment use


Question

:

Which type of computer storage is volatile and loses data when power is turned off?

Random Access Memory (RAM)