Cybersec TestF

Encryption is:

• A way to increase cloud storage capacity

• A technique to hide the location of cloud servers

• The process of converting data into a code to prevent unauthorized access

• A method to access cloud data without a password

Which type of cipher substitutes letters of the alphabet, based on a position offset from the

original letter?

• Block cipher

• Substitution cipher

• Vigenere cipher

• Polyalphabetic cipher

What type of cryptography does not change the text but rather changes the position of the original text format?

• Transposition cipher

• Substitution cipher

• None of these

Which of the following types of encryption algorithm is not a symmetric encryption

algorithm?

• DES

• RSA

• RC4

• AES

DES has two operating modes, block cipher and stream cipher. Which two of the following selections are part of the block cipher mode? (Choose two.)

• CBC mode

• ECB mode

• OFB mode

What is the main use for asymmetric encryption?

• Encrypting large amounts of data

• Generating shared secret keys

• Encrypting images

• VPN data

Which are examples of asymmetric encryption algorithms? (Choose two.)

• AES

• CIA

• DH

• RSA

What are the drawbacks of asymmetric encryption? (Choose two.)

• Speed

• Key length weakness

• Expense

• Lack of use

What is the name of the attack method that can be used to defeat all cryptography

methods?

• Brute force

• Spoofing

• Honeypot

• Fuzzing

Which current encryption algorithm key strength that follows is considered inadequate,

subject to brute - force attacks?

• 56 bit

• 64 bit

• 40 bit