WorksheetsCryptography and Security Quiz
Total questions: 12
Worksheet time: 6mins
Which security function is provided by encryption algorithms?
confidentiality
key management
authorization
integrity
Which type of cryptographic key would be used when connecting to a secure website?
symmetric keys
digital signatures
DES key
hash keys
What do most cryptographic system attacks seek to target?
user information
the cryptographic algorithm
key management
the actual data packet
Which type of attack does the use of HMACs protect against?
man-in-the-middle
DoS
DDoS
brute force
What is a feature of asymmetrical encryption?
Different keys are used to encrypt and decrypt data.
It requires fewer computations than symmetric encryption requires.
Key lengths are short.
It encrypts bulk data quickly.
What is the reason for HMAC to use an additional secret key as input to the hash function?
to provide integrity verification
to provide encryption
to provide authentication
to prevent DoS attacks
What is the purpose of the DH algorithm?
to support email data confidentiality
to encrypt data traffic after a VPN is established
to generate a shared secret between two hosts that have not communicated before
to provide nonrepudiation support
Which statement describes the Software-Optimized Encryption Algorithm (SEAL)?
SEAL is a stream cipher.
It is an example of an asymmetric algorithm.
It uses a 112-bit encryption key.
It requires more CPU resources than software-based AES does.
Which data security component is provided by hashing algorithms?
authentication
integrity
confidentiality
key exchange
Which two algorithms use a hashing function to ensure message integrity? (Choose two.)
3DES
MD5
AES
SEAL
SHA
Which characteristic of security key management is responsible for making certain that weak cryptographic keys are not used?
exchange
generation
verification
revocation and destruction
What is the function of the Diffie-Hellman algorithm within the IPsec framework?
provides authentication
allows peers to exchange shared keys
guarantees message integrity
provides strong data encryption
