Encryption and Security Quiz

In a hierarchical CA topology, where can a subordinate CA obtain a certificate for itself?

• from the root CA or another subordinate CA at a higher level

• from the root CA or another subordinate CA at the same level

• from the root CA or from self-generation

• from the root CA only

• from the root CA or another subordinate CA anywhere in the tree

What is another name for confidentiality of information?

• consistency

• trustworthiness

• accuracy

• privacy

In which method used in cryptanalysis does the attacker know a portion of the plaintext and the corresponding ciphertext?

• meet-in-the-middle

• brute-force

• chosen-plaintext

• ciphertext

What popular encryption algorithm requires that both the sender and receiver know a pre-shared key?

• PKI

• MD5

• HMAC

• AES

What technology has a function of using trusted third-party protocols to issue credentials that are accepted as an authoritative identity?

• digital signatures

• hashing algorithms

• PKI certificates

• symmetric keys

What technology supports asymmetric key encryption used in IPsec VPNs?

• 3DES

• IKE

• SEAL

• AES

Which requirement of secure communications is ensured by the implementation of MD5 or SHA hash generating algorithms?

• nonrepudiation

• authentication

• integrity

• confidentiality

What is the purpose of a digital certificate?

• It provides proof that data has a traditional signature attached.

• It guarantees that a website has not been hacked.

• It ensures that the person who is gaining access to a network device is authorized.

• It authenticates a website and establishes a secure connection to exchange confidential data.

What is the purpose for using digital signatures for code signing?

• to establish an encrypted connection to exchange confidential data with a vendor website

• to verify the integrity of executable files downloaded from a vendor website

• to authenticate the identity of the system with a vendor website

• to generate a virtual ID

What is the keyspace of an encryption algorithm?

• the set of all possible values used to generate a key

• the set of procedures used to calculate asymmetric keys

• the set of hash functions used to generate a key

• the mathematical equation that is used to create a key