Cybersecurity I Unit 4 Exam 1 Review

Question 1

I create a cipher where each letter ALWAYS changes to the same letter (A is always F, M is always P, etc.). This is a:

Accepted Answer

monoalphabetic cipher

Question 2

Convert the following binary to hex: 11000110

Accepted Answer

C6

Question 3

What does ASCII stand for?

Accepted Answer

American Standard Code for Information Interchange

Question 4

In the Hexadecimal number system, how many possible values are there for each digit?

Accepted Answer

16

Question 5

Exfiltration is the hiding of intended meaning in communication, making it confusing or harder to interpret.

Accepted Answer

False

Question 6

Convert the base-10 number to binary: 31

Accepted Answer

00011111

Question 7

__________ is representing data using some type of conversion system, but not trying to hide anything.

Accepted Answer

encoding

Question 8

The decimal number system is also called:

Accepted Answer

base-10

Question 9

Convert the following binary to base-10: 00110111

Accepted Answer

55

Question 10

Convert the hex number to binary: 2H

Accepted Answer

This is not a valid hex number

Question 11

Convert the hex number to binary: 3F

Accepted Answer

63

Question 12

The message "hello" is encrypted using a Caesar cipher shift of 2, resulting in "jgnnq". What is the plaintext?

Accepted Answer

hello

Question 13

Convert the base-10 number to hex: 25

Accepted Answer

19

Question 14

I have an image file on my computer. Which is NOT part of the metadata?

Accepted Answer

the pixel colors within the image

Question 15

Which of these is the largest number of bits?

Accepted Answer

gigabyte

Question 16

How many things can I represent with two binary digits?

Accepted Answer

4

Questions 16