Eccouncil 212-81 ECES Exam Practice Test Instant Access

Question 1

During the process of encryption and decryption, what keys are shared?

APublic keys

BPublic and private keys

CUser passwords

DPrivate keys

Answer : A

Question 2

You are explaining basic mathematics to beginning cryptography students. You are covering the basic math used in RS

AA prime number is defined as

AOdd numbers with no divisors

BOdd numbers

CAny number only divisible by odd numbers

DAny number only divisible by one and itself

Answer : C

Question 3

In which of the following password protection technique, random strings of characters are added to the password before calculating their hashes?

AKeyed Hashing

BDouble Hashing

CSalting

DKey Stretching

Answer : C

Question 4

Asymmetric encryption method developed in 1984. It is used in PGP implementations and GNU Privacy Guard Software. Consists of 3 parts: key generator, encryption algorithm, and decryption algorithm.

ATiger

BGOST

CRIPEMD

DElGamal

Answer : D

Question 5

What does Output feedback (OFB) do:

AThe message is divided into blocks and each block is encrypted separately. This is the most basic mode for symmetric encryption

BThe cipher text from the current round is XORed with the plaintext from the previous round

CA block cipher is converted into a stream cipher by generating a keystream blocks, which are then XORed with the plaintext blocks to get the ciphertext

DThe cipher text from the current round is XORed with the plaintext for the next round

Answer : C

Question 6

This algorithm was published by the German engineering firm Seimans in 1993. It is a software based stream cipher using Lagged Fibonacci generator along with a concept borrowed from the shrinking generator ciphers.

ARC4

BBlowfish

CTwofish

DFISH

Answer : D

Question 7

Which method of password cracking takes the most time and effort?

ADictionary attack

BShoulder surfing

CBrute force

DRainbow tables

Answer : C

Eccouncil 212-81 Certified Encryption Specialist ECES Exam Practice Test

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7