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C839- Cryptography Questions with Correct
Answers for a Specific Exam Mail
A business wants to use keys issued by a trusted third party to demonstrate to
potential customers that it is a legitimate organization.Which key is used to
sign the certificate issued to the business?
Ans: Private key of the root CA
A business wants to use keys issued by a trusted third party to demonstrate it
is a legitimate organization to potential customers.Which key should the
business send to potential customers to prove its identity?
Ans: Public key of the company
What should an administrator use to import and export all items written using
X.509 that are part of a chain of trust?
Ans: Public Key Cryptography Standard (PKCS) #12
Which field displays the hash, or digest, of the certificate in an X.509
certificate?
Ans: thumbprint
Employee B sends Employee A an encrypted message.What does Employee
A use to decrypt the message from Employee B?
Ans: Employee A's private key
What is an example of a symmetric algorithm?
Pretest - Stuvia US
, 2
Ans: AES
Which two components involved in performing encryption are known to the
party that will perform decryption before symmetric encryption is
applied?Choose 2 answers.
Ans: Cryptographic algorithm & Cryptographic key
Employee A created a secret key and wants to send it to Employee B
without any coworkers being able to decrypt the message.Which key needs
to encrypt the message?
Ans: Employee B's public key
Which type of cipher is ChaCha?
Ans: stream
What is the key size for RC4 with WEP?
Ans: 40 bits
Which symmetric encryption technique uses a 56-bit key size and a 64-bit
block size?
Ans: DES
Which wireless security standard uses a 128-bit RC4 stream cipher for
encrypted communications?
Ans: WPA
Pretest - Stuvia US
C839- Cryptography Questions with Correct
Answers for a Specific Exam Mail
A business wants to use keys issued by a trusted third party to demonstrate to
potential customers that it is a legitimate organization.Which key is used to
sign the certificate issued to the business?
Ans: Private key of the root CA
A business wants to use keys issued by a trusted third party to demonstrate it
is a legitimate organization to potential customers.Which key should the
business send to potential customers to prove its identity?
Ans: Public key of the company
What should an administrator use to import and export all items written using
X.509 that are part of a chain of trust?
Ans: Public Key Cryptography Standard (PKCS) #12
Which field displays the hash, or digest, of the certificate in an X.509
certificate?
Ans: thumbprint
Employee B sends Employee A an encrypted message.What does Employee
A use to decrypt the message from Employee B?
Ans: Employee A's private key
What is an example of a symmetric algorithm?
Pretest - Stuvia US
, 2
Ans: AES
Which two components involved in performing encryption are known to the
party that will perform decryption before symmetric encryption is
applied?Choose 2 answers.
Ans: Cryptographic algorithm & Cryptographic key
Employee A created a secret key and wants to send it to Employee B
without any coworkers being able to decrypt the message.Which key needs
to encrypt the message?
Ans: Employee B's public key
Which type of cipher is ChaCha?
Ans: stream
What is the key size for RC4 with WEP?
Ans: 40 bits
Which symmetric encryption technique uses a 56-bit key size and a 64-bit
block size?
Ans: DES
Which wireless security standard uses a 128-bit RC4 stream cipher for
encrypted communications?
Ans: WPA
Pretest - Stuvia US
