Chapter 5 NSS

1.

1 point

Which protection is provided by hashing?

integrity

authenticity

availability

confidentiality

2.

1 point

Which of these is the strongest symmetric cryptographic algorithm?

Triple Data Encryption Standard

Data Encryption Standard

Advanced Encryption Standard

Rivest Cipher (RC) 1

3.

1 point

What is the latest version of the Secure Hash Algorithm?

SHA-4

SHA-3

SHA-5

SHA-2

4.

1 point

The areas of a file in which steganography can hide data include all of the following EXCEPT _______.

in the directory structure of the file system

in the file header fields that describe the file

in areas that contain the content data itself

in data that is used to describe the content or structure of the actual data

5.

1 point

A digital signature can provide each of the following benefits EXCEPT _______.

enforce nonrepudiation

verify the sender

verify the receiver

prove the integrity of the message

6.

1 point

What is data called that is to be encrypted by inputting it into an cryptographic algorithm?

plaintext

opentext

ciphertext

cleartext

7.

1 point

Which of these has an onboard key generator and key storage facility, as well as accelerated symmetric and asymmetric encryption, and can back up sensitive material in encrypted form?

Trusted Platform Module (TPM)

encrypted hardware-based USB devices

self-encrypting hard disk drives (HDDs)

Hardware Security Module (HSM)

8.

1 point

Which of the following key exchanges uses the same keys each time?

Diffie-Hellman Ephemeral (DHE)

Diffie-Hellman-RSA (DHRSA)

Diffie-Hellman (DH)

Elliptic Curve Diffie-Hellman (ECDH)

9.

1 point

Which of these is NOT a basic security protection for information that cryptography can provide?

confidentiality

risk loss

integrity

authenticity

10.

1 point

Public key systems that generate random public keys that are different for each session are called _______.

Public Key Exchange (PKE)

perfect forward secrecy

Diffie-Hellman (DH)

Elliptic Curve Diffie-Hellman (ECDH)

11.

1 point

Proving that a user sent an email message is known as _______.

integrity

repudiation

availability

non-repudiation

12.

1 point

Elliptic Curve Diffie–Hellman (ECDH) is an example of _________.

in-band key exchange

AES key certification

out-of-band key exchange

SHA-1 key management

13.

1 point

All of the following can be broken mathematically EXCEPT _______.

OTP

AES

3DES

SHA

14.

1 point

Which of these is NOT a characteristic of a secure hash algorithm

The hash should always be the same fixed size.

A message cannot be produced from a predefined hash.

Collisions should be rare.

The results of a hash function should not be reversed.

15.

1 point

Which asymmetric encryption algorithm uses prime numbers?

ECC

RSA

EFS

quantum computing

16.

1 point

The Hashed Message Authentication Code (HMAC) ____________.

encrypts only the message

encrypts the key and the message

encrypts only the key

encrypts the DHE key only

17.

1 point

If Bob wants to send a secure message to Alice using an asymmetric cryptographic algorithm, which key does he use to encrypt the message?

Bob’s private key

Alice’s public key

Alice’s private key

Bob’s public key

18.

1 point

Which asymmetric cryptographic algorithm is the most secure?

RSA

SHA-2

ME-14

BTC-2

19.

1 point

The Trusted Platform Module (TPM) _________.

is available only on Windows computers running BitLocker

allows the user to boot a corrupted disk and repair it

provides cryptographic services in hardware instead of software

includes a pseudorandom number generator (PRNG)

20.

1 point

A(n) ________ is not decrypted but is only used for comparison purposes.

key

stream

algorithm

digest