Question 1

The power of a particular encryption technique is based on the ____.&#10;A) key length&#10;B) encryption strength&#10;C) storage technique&#10;D) system entropy

Accepted Answer

B

Question 2

A ____ is visible or invisible information added to an image, video, or audio that identifies the copyright owner of the media.&#10;A) digital signature&#10;B) digital footprint&#10;C) digital fingerprint&#10;D) digital watermark

Accepted Answer

A digital watermark is visible or invisible information added to an image, video, or audio that identifies the copyright owner of the media. It may include a logo, text, or other identifying information. This helps prevent unauthorized use and distribution of the media.

Question 3

The hash value is called a ____.&#10;A) cipher&#10;B) digest&#10;C) ciphertext&#10;D) plaintext

Accepted Answer

A hash value is also known as a message digest. This is a fixed-size representation of the original message or data. The purpose of a hash function is to take input data of any size and convert it into a fixed size output, typically in the form of a hexadecimal string. The resulting hash value can be used to verify the integrity of the original message or data, as any changes to the message would result in a different hash value.

Question 4

In ____ encryption, the private key is kept private, in the hands of a single individual.&#10;A) asymmetric&#10;B) symmetric&#10;C) private key&#10;D) shared secret

Accepted Answer

In asymmetric encryption, a pair of keys is used: a public key, which is shared publicly, and a private key, which is kept secret and in the hands of a single individual. This allows for secure communication, where the public key can be used to encrypt messages that only the private key can decrypt.

Question 5

____ ciphers encrypt any number of bits&#10;A) Bit&#10;B) Hash&#10;C) Stream&#10;D) Block

Accepted Answer

The answer of ____ ciphers encrypt any number of bits&#10;A)...

Question 6

Asymmetric encryption algorithms use ____________________ keys to perform the encryption and decryption.

Accepted Answer

The answer of Asymmetric encryption algorithms use ____________________ keys to...

Question 7

The ____ determines the level of data protection provided by the encryption technique.&#10;A) encryption strength&#10;B) storage technique&#10;C) system entropy&#10;D) key length

Accepted Answer

The key length determines the level of data protection provided by the encryption technique. The longer the key length, the stronger the encryption and the more difficult it is for unauthorized parties to decipher the encrypted data. The other options are important factors in data protection and encryption, but they do not directly determine the level of data protection provided.

Question 8

Symmetric encryption is generally thought to be more secure than asymmetric encryption.

Accepted Answer

Asymmetric encryption uses a pair of keys (public and private) making it generally more secure for certain applications like transmitting data over the internet, whereas symmetric encryption uses a single key for both encryption and decryption, making key distribution a challenge.

Question 9

Keeping secrets has become a major force in networking and communication.

Accepted Answer

With the rising concerns over privacy and security, the ability to keep secrets has become essential in networking and communication. Encryption, password protection, and secure messaging apps are just some examples of tools used to keep information confidential.

Question 10

Symmetric encryption algorithms use one key for both encryption and decryption.

Accepted Answer

Symmetric encryption algorithms use the same key for both encryption and decryption, hence they are also known as "secret key" algorithms.

Question 11

Hashed data can be unhashed and turned back into their original form.

Accepted Answer

The answer of Hashed data can be unhashed and turned...

Question 12

In ____ encryption, the single key must be shared between the individuals wishing to protect their data.&#10;A) asymmetric&#10;B) public key&#10;C) symmetric&#10;D) shareable

Accepted Answer

The answer of In ____ encryption, the single key must...

Question 13

____________________ is a technique to detect changes to information rather than encrypt and decrypt information.

Accepted Answer

The answer of ____________________ is a technique to detect changes...

Question 14

____ is a fascinating and possibly dangerous technique for hiding one form of information inside another.&#10;A) Sociology&#10;B) Cryptography&#10;C) Steganography&#10;D) Social analytics

Accepted Answer

The answer of ____ is a fascinating and possibly dangerous...

Question 15

The ____________________ of the WAV file determines how much data can be hidden inside it.

Accepted Answer

The answer of The ____________________ of the WAV file determines...

Question 16

A JPG image is a complex data structure containing compressed DCT coefficients for ____ blocks of pixels.&#10;A) 4x4&#10;B) 8x8&#10;C) 16x16&#10;D) 32x32

Accepted Answer

The answer of A JPG image is a complex data...

Question 17

In the ____ cipher technique, the letters of the alphabet are shifted one or more positions to obtain the encryption alphabet.&#10;A) Caesar&#10;B) Roman&#10;C) Augustus&#10;D) Romani

Accepted Answer

The answer of In the ____ cipher technique, the letters...

Question 18

A(n) ____________________ is a special word, phrase, or binary number that is used during encryption or decryption to manipulate the data.

Accepted Answer

The answer of A(n) ____________________ is a special word, phrase,...

Question 19

Even the best encryption algorithm can be outdone by improper use.

Accepted Answer

The answer of Even the best encryption algorithm can be...

Question 20

A(n) ____________________ cipher is an algorithm that encrypts or decrypts blocks of data, such as 64-bit or 128-bit chunks of information at a time.

Accepted Answer

The answer of A(n) ____________________ cipher is an algorithm that...

Question 21

How is data hidden inside a WAV?

Accepted Answer

The answer of How is data hidden inside a WAV?...

Question 22

Match between columns&#10;                        Premises: Involves taking encrypted information and putting it back into the original form&#10;Involves taking encrypted information and putting it back into the original form&#10;Involves taking encrypted information and putting it back into the original form&#10;Involves taking encrypted information and putting it back into the original form&#10;Involves taking encrypted information and putting it back into the original form&#10;Two keys are used to encrypt and decrypt the data&#10;Two keys are used to encrypt and decrypt the data&#10;Two keys are used to encrypt and decrypt the data&#10;Two keys are used to encrypt and decrypt the data&#10;Two keys are used to encrypt and decrypt the data&#10;A single key is used to encrypt and decrypt the data&#10;A single key is used to encrypt and decrypt the data&#10;A single key is used to encrypt and decrypt the data&#10;A single key is used to encrypt and decrypt the data&#10;A single key is used to encrypt and decrypt the data&#10;The process to change something easy to read into something that is difficult to read&#10;The process to change something easy to read into something that is difficult to read&#10;The process to change something easy to read into something that is difficult to read&#10;The process to change something easy to read into something that is difficult to read&#10;The process to change something easy to read into something that is difficult to read&#10;Involves taking data and coding it into a different, unreadable form&#10;Involves taking data and coding it into a different, unreadable form&#10;Involves taking data and coding it into a different, unreadable form&#10;Involves taking data and coding it into a different, unreadable form&#10;Involves taking data and coding it into a different, unreadable form

Accepted Answer

The Answer of Cryptography and Encryption and Decryption and Symmetric is...

Question 23

What is a frequency analysis?

Accepted Answer

The answer of What is a frequency analysis?...

Question 24

Describe asymmetric encryption.

Accepted Answer

The answer of Describe asymmetric encryption....

Question 25

Describe symmetric encryption.

Accepted Answer

The answer of Describe symmetric encryption....

Question 26

Discuss the encryption strength of symmetric and asymmetric encryption.

Accepted Answer

The answer of Discuss the encryption strength of symmetric and...

Deck 21: Cryptography and Security