CS101 – Introduction to Computer
Science (Midterm Exam Questions
With Complete Solutions |
2025/2026)Midterm
1. Byte - ANSWER ✔ A unit of digital information that
consists of eight bits.
2. Octet - ANSWER ✔ Also consists of 8 bits; therefore,
an octet is a byte.
3. Runtime Error - ANSWER ✔ A runtime error occurs
when the program is running and encounters an
unexpected condition that prevents it from continuing.
4. Hexadecimal - ANSWER ✔ A base-16 numbering
system used in computing, which uses 16 digits: 0-9
, and A-F, where A-F represent the numbers 10 through
15.
5. Hexadecimal representation - ANSWER ✔ One digit of
hexadecimal can represent four digits of binary, and
hexadecimal numbers are usually written in groups of
two.
6. Leading zero in hex - ANSWER ✔ Often used before a
hex number to represent it clearly.
7. Hexadecimal in computing - ANSWER ✔ Used to view
raw data in a file, serving as shorthand for binary and
easier for humans to read.
8. Space efficiency of hex - ANSWER ✔ Displaying data
in hex takes four times less space than in binary.
9. Octal Number - ANSWER ✔ A base-8 numbering
system (with values from 0 through 7).
,10. Binary Number - ANSWER ✔ A base-2 numbering
system (with values of 0 and 1).
11. Conversion from Octal to Binary - ANSWER ✔ One
digit of octal can represent exactly three digits in
binary.
12. Data Storage - ANSWER ✔ Devices like RAM and
hard drives used to store data.
13. Hard Drive - ANSWER ✔ A device that stores data
permanently, preserving it even after the computer is
turned off.
14. Kilobyte (KB) - ANSWER ✔ 1,000 Bytes, used to
measure small amounts of data, such as text documents
or small images.
, 15. Megabyte (MB) - ANSWER ✔ 1,000 Kilobytes, used
to measure larger files, such as high-resolution images
or short videos.
16. Gigabyte (GB) - ANSWER ✔ 1,000 Megabytes, used
to measure even larger files, such as movies or large
software programs.
17. Terabyte (TB) - ANSWER ✔ 1,000 Gigabytes, used
to measure very large amounts of data, such as complex
databases or entire collections of high-resolution
videos.
18. Petabyte (PB) - ANSWER ✔ 1,000 Terabytes,
representing all photos on Facebook.
19. Conversion from Binary to Decimal - ANSWER ✔
Assign place values to each digit of the binary number,
starting from the rightmost digit and working leftward.
Science (Midterm Exam Questions
With Complete Solutions |
2025/2026)Midterm
1. Byte - ANSWER ✔ A unit of digital information that
consists of eight bits.
2. Octet - ANSWER ✔ Also consists of 8 bits; therefore,
an octet is a byte.
3. Runtime Error - ANSWER ✔ A runtime error occurs
when the program is running and encounters an
unexpected condition that prevents it from continuing.
4. Hexadecimal - ANSWER ✔ A base-16 numbering
system used in computing, which uses 16 digits: 0-9
, and A-F, where A-F represent the numbers 10 through
15.
5. Hexadecimal representation - ANSWER ✔ One digit of
hexadecimal can represent four digits of binary, and
hexadecimal numbers are usually written in groups of
two.
6. Leading zero in hex - ANSWER ✔ Often used before a
hex number to represent it clearly.
7. Hexadecimal in computing - ANSWER ✔ Used to view
raw data in a file, serving as shorthand for binary and
easier for humans to read.
8. Space efficiency of hex - ANSWER ✔ Displaying data
in hex takes four times less space than in binary.
9. Octal Number - ANSWER ✔ A base-8 numbering
system (with values from 0 through 7).
,10. Binary Number - ANSWER ✔ A base-2 numbering
system (with values of 0 and 1).
11. Conversion from Octal to Binary - ANSWER ✔ One
digit of octal can represent exactly three digits in
binary.
12. Data Storage - ANSWER ✔ Devices like RAM and
hard drives used to store data.
13. Hard Drive - ANSWER ✔ A device that stores data
permanently, preserving it even after the computer is
turned off.
14. Kilobyte (KB) - ANSWER ✔ 1,000 Bytes, used to
measure small amounts of data, such as text documents
or small images.
, 15. Megabyte (MB) - ANSWER ✔ 1,000 Kilobytes, used
to measure larger files, such as high-resolution images
or short videos.
16. Gigabyte (GB) - ANSWER ✔ 1,000 Megabytes, used
to measure even larger files, such as movies or large
software programs.
17. Terabyte (TB) - ANSWER ✔ 1,000 Gigabytes, used
to measure very large amounts of data, such as complex
databases or entire collections of high-resolution
videos.
18. Petabyte (PB) - ANSWER ✔ 1,000 Terabytes,
representing all photos on Facebook.
19. Conversion from Binary to Decimal - ANSWER ✔
Assign place values to each digit of the binary number,
starting from the rightmost digit and working leftward.
