Test 212-81 Dumps | Practice 212-81 Mock

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The EC-COUNCIL 212-81 exam is a computer-based test that consists of 50 multiple-choice questions. The exam is timed, and candidates have 75 minutes to complete it. The passing score for the exam is 70%. The exam can be taken at any Pearson VUE testing center around the world.

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The EC-COUNCIL 212-81 (Certified Encryption Specialist) Certification Exam is a highly esteemed certification in the field of cybersecurity. This certification is designed to validate the skills and knowledge of professionals who have expertise in encryption methodologies and technologies. The exam tests the candidate's ability to apply encryption strategies, tools, and techniques to secure data and information against unauthorized access and theft.

EC-COUNCIL Certified Encryption Specialist Sample Questions (Q192-Q197):

NEW QUESTION # 192
Which algorithm implements an unbalanced Feistel cipher?

A. 3DES
B. Blowfish
C. Skipjack
D. RSA

Answer: C

Explanation:
Skipjack
https://en.wikipedia.org/wiki/Skipjack_(cipher)
Skipjack uses an 80-bit key to encrypt or decrypt 64-bit data blocks. It is an unbalanced Feistel network with 32 rounds.

NEW QUESTION # 193
This is a proprietary version of PAP. Encrypts username and password as it is sent across network.

A. Kerberos
B. WPA2
C. PPTP VPN
D. S-PAP

Answer: D

Explanation:
S-PAP
Shiva Password Authentication Protocol (S-PAP) - PAP with encryption for the usernames/passwords that are transmitted.
Incorrect answers:
Kerberos - a computer-network authentication protocol that works on the basis of tickets to allow nodes communicating over a non-secure network to prove their identity to one another in a secure manner. Its designers aimed it primarily at a client-server model and it provides mutual authentication-both the user and the server verify each other's identity. Kerberos protocol messages are protected against eavesdropping and replay attacks.
WPA2 - (Wi-Fi Protected Access II) security certification program developed by the Wi-Fi Alliance to secure wireless computer networks. It includes mandatory support for CCMP, an AES-based encryption mode.
PPTP VPN - works at layer 2 (data link) layer of OSI model. Provides both authentication and encryption. EAP or CHAP is used to provide the authentication for PPTP. MPPE (Microsoft Point to Point Encryption) is used to encrypt the traffic. MPPE - a specific Microsoft implementation of DES. Can only use over a traditional Ethernet network.

NEW QUESTION # 194
Ciphers that write message letters out diagonally over a number of rows then read off cipher row by row. Also called zig-zag cipher.

A. Null Cipher
B. Rail Fence Cipher
C. Vigenere Cipher
D. ROT-13

Answer: B

Explanation:
Rail Fence Cipher
https://en.wikipedia.org/wiki/Rail_fence_cipher
The rail fence cipher (also called a zigzag cipher) is a form of transposition cipher. It derives its name from the way in which it is encoded.
Incorrect answers:
Null cipher - also known as concealment cipher, is an ancient form of encryption where the plaintext is mixed with a large amount of non-cipher material. Today it is regarded as a simple form of steganography, which can be used to hide ciphertext.
Vigenere cipher - is a method of encrypting alphabetic text by using a series of interwoven Caesar ciphers, based on the letters of a keyword. It employs a form of polyalphabetic substitution.
ROT13 - ("rotate by 13 places", sometimes hyphenated ROT-13) is a simple letter substitution cipher that replaces a letter with the 13th letter after it, in the alphabet. ROT13 is a special case of the Caesar cipher which was developed in ancient Rome.

NEW QUESTION # 195
Part of understanding cryptography is understanding the cryptographic primitives that go into any crypto system. A(n) _______ is a fixed-size input to a cryptographic primitive that is random or pseudorandom.

A. Key
B. Salt
C. IV
D. Chain

Answer: A

Explanation:
Key
https://en.wikipedia.org/wiki/Key_(cryptography)
In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm. For encryption algorithms, a key specifies the transformation of plaintext into ciphertext, and vice versa for decryption algorithms. Keys also specify transformations in other cryptographic algorithms, such as digital signature schemes and message authentication codes.

NEW QUESTION # 196
The most common way steganography is accomplished is via which one of the following?

A. msb
B. rsb
C. asb
D. Isb

Answer: D

Explanation:
lbs
https://en.wikipedia.org/wiki/Bit_numbering#:~:text=In%20computing%2C%20the%20least%20significant,number%20is%20even%20or%20odd.
The least significant bit (LSB) is the bit position in a binary integer giving the units value, that is, determining whether the number is even or odd. The LSB is sometimes referred to as the low-order bit or right-most bit, due to the convention in positional notation of writing less significant digits further to the right. It is analogous to the least significant digit of a decimal integer, which is the digit in the ones (right-most) position.

NEW QUESTION # 197
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