Deck 16: Cryptography

Question 1

Which of the following organizations is responsible for issuing and maintaining digital certificates?

A)Certification Authority
B)Certificate Company
C)Certificate Storage
D)Certificate Agency

Answer 1

Certification Authority

Question 2

John wants to check the validity of a digital certificate. Which of the following should he use?

A)Trust model
B)Certificate policy
C)Key escrow
D)Certificate revocation list

Answer 2

Certificate revocation list

Question 3

What is the block size of the SHA-1 algorithm?

A)256 bits
B)64 bits
C)512 bits
D)128 bits

Answer 3

512 bits

Question 4

Which of the following Symmetric Algorithms uses a key size of up to 2,040 bits?

A)Blowfish
B)RC5
C)IDEA
D)CAST

Question 5

David wants to use symmetric-key encryption to encrypt and decrypt data. How many keys will he need?

A)3
B)4
C)2
D)1

Question 6

What is the block size used by the Blowfish algorithm?

A)64 bits
B)100 bits
C)128 bits
D)150 bits

Question 7

Which of the following standards does S/MIME use?

A)PKCS #7
B)PKCS#4
C)TLS
D)X)509

Question 8

Which of the following can PGP not encrypt?

A)Full Disk
B)Individual File
C)E-mails
D)Hard copies

Question 9

What is a hardware based encryption device that stores keys that protect information called?

A)TPM
B)DMZ
C)SLP
D)TFTP

Question 10

A simple way to secure hardware, such as laptops and PCs, with a key or combination would be:

A)Padlock
B)Cable Locks
C)Key pad
D)Rope

Question 11

What is a company that can authorize the issuing of Digital Certificates called?

A)Certificate Authority
B)Certificate Assigner
C)Certificate Headquarter
D)Certificate Distributer

Question 12

What is used for encrypting and decrypting disk partitions, e-mails, files and other data that use hashing, symmetric cryptography and public key cryptography?

A)TFTP
B)HTTPS
C)PGP
D)SSH

Question 13

A way of concealing messages from even being seen except from the sender and receiver is:

A)Cryptography
B)Steganography
C)Hiding
D)Concealment

Question 14

What kind of trust model is in place when a CA is both the root and subordinate as is every other CA in the organization?

A)Hybrid Trust
B)Rooted Trust
C)User Trust
D)Network Trust

Question 15

Which Cryptographic hash function uses a 128-bit hash and is not collision resistant?

A)SHA
B)AES
C)MD5
D)3DES

Question 16

What is a digital signature?

A)A png of someone's signature.
B)A Cryptographic way of remotely signing a document.
C)A mathematical way of verifying the authenticity of a document.
D)A way to protect the user from themselves.

Question 17

What was the first IEEE encryption standard for 802.11 wireless communications?

A)WPA
B)WEP
C)WPA2
D)CHAP