F6-CS Security MCQ

What is meant by the term cipher when used in cryptography?

• A an encryption or decryption algorithm

• B an encrypted message

• C a type of session key

• D a digital signature

• E text following an encryption algorithm

When carrying out asymmetric encryption, which of the following users would keep the private key?

• A the sender

• B the receiver

• C both sender and receiver

• D all recipients of the message

• E none of the above

In cryptography, which of the following is the term used to describe the message before it is encrypted?

• A simpletext

• B plaintext

• C notext

• D ciphertext

• E firsttext

Which of the following is the biggest disadvantage of using symmetric encryption?

• A it is very complex and time consuming

• B it is rarely used any more

• C the value of the key reads the same in both directions

• D it only works on computers with older operating systems

• E there is a security problem when transmitting the secret key

Which of the following is the correct name for a form of encryption in which both the sender and the recipient use the same key to encrypt/ decrypt?

• A symmetric key encryption

• B asymmetric key encryption

• C public key encryption

• D same key encryption

• E block cipher encryption

Which of the following is involved in temporary key generation?

• A session keys

• B private key and certificate

• C public key and certificate

• D master keys

• E public keys

Which of the following is a correct statement about PKIs?

• A they use private and public keys but not digital certificates

• B they use digital signatures and public keys 42317.4 Digital signatures and digital certificates

• C they are a combination of digital certificates, public key cryptography and CAs

• D they use asymmetric keys, hashing algorithms and certificate authorities

• E they are a combination of digests, hashing algorithms and asymmetric cryptographic algorithms

SSL provides which of the following?

• A message integrity only

• B confidentiality only

• C compression and authentication

• D message integrity, confidentiality and compression

• E authentication, encryption and digital signatures

Which of the following indicates a secure website?

• A http and closed padlock

• B http and open padlock

• C https and closed padlock

• D https and open padlock

• E green closed padlock only

Which of the following is not part of security?

• A non-repudiation

• B bit streaming

• C data integrity

• D data privacy

• E user authentication