# possible error in epractice labs OCMJEA6 mock exam

Titi Wangsa Damhore

Greenhorn

Posts: 3

posted 2 years ago

I hit this question.

Choose any 2

80. Which of the following statements are NOT true with respect to Public and Private keys?

Choice A: Private key can be used for encryption

Choice B: Private key will be shared to decrypt the data

Choice C: Public key will be shared to decrypt the data

Choice D: Private keys are shared

my source:

https://en.wikipedia.org/wiki/Public-key_cryptography

http://searchsecurity.techtarget.com/definition/PKI

Choice A: Private key can be used for encryption [incorrect]

Each user has a pair of cryptographic keys – a public encryption key and a private decryption key

Public-key encryption, in which a message is encrypted with a recipient's public key.

public key for encryption and private key for decryption

Choice B: Private key will be shared to decrypt the data [incorrect]

"The public key is widely distributed, while the private key is known only to its proprietor."

private key will decrypt. true.

private key will be shared. false.

so it is false.

Choice C: Public key will be shared to decrypt the data [incorrect]

public key will be shared. true.

public key to decrypt the data. false.

Choice D: Private keys are shared [incorrect]

"The public key is widely distributed, while the private key is known only to its proprietor."

private keys are not shared.

public keys are shared.

the answer for the mock exam is:

Choice B: Private key will be shared to decrypt the data

Choice D: Private keys are shared

Choice A is NOT true

Choice C is NOT true

the answer should be A,B,C,D

Am I incorrect or is the mock exam incorrect?

Choose any 2

80. Which of the following statements are NOT true with respect to Public and Private keys?

Choice A: Private key can be used for encryption

Choice B: Private key will be shared to decrypt the data

Choice C: Public key will be shared to decrypt the data

Choice D: Private keys are shared

my source:

https://en.wikipedia.org/wiki/Public-key_cryptography

http://searchsecurity.techtarget.com/definition/PKI

Choice A: Private key can be used for encryption [incorrect]

Each user has a pair of cryptographic keys – a public encryption key and a private decryption key

Public-key encryption, in which a message is encrypted with a recipient's public key.

public key for encryption and private key for decryption

Choice B: Private key will be shared to decrypt the data [incorrect]

"The public key is widely distributed, while the private key is known only to its proprietor."

private key will decrypt. true.

private key will be shared. false.

so it is false.

Choice C: Public key will be shared to decrypt the data [incorrect]

public key will be shared. true.

public key to decrypt the data. false.

Choice D: Private keys are shared [incorrect]

"The public key is widely distributed, while the private key is known only to its proprietor."

private keys are not shared.

public keys are shared.

the answer for the mock exam is:

Choice B: Private key will be shared to decrypt the data

Choice D: Private keys are shared

Choice A is NOT true

Choice C is NOT true

the answer should be A,B,C,D

Am I incorrect or is the mock exam incorrect?

Sai Babu

Ranch Hand

Posts: 31

posted 2 years ago

Hi Titi,

I took tried this question in ePractice labs, it seems the answer options are some how mis-spelled or they could be wrong,

hopefully someone from ePractice labs correct these errors.

for the explanation you gave and based on my research, Public keys are used for encryption and private keys are used for decryption.

Thanks

I took tried this question in ePractice labs, it seems the answer options are some how mis-spelled or they could be wrong,

hopefully someone from ePractice labs correct these errors.

for the explanation you gave and based on my research, Public keys are used for encryption and private keys are used for decryption.

Thanks

Sai Babu

SCJP, SCWCD