212-81시험대비최신덤프모음집시험준비에가장좋은시험기출문제와예상문제모음자료

7zrn41wdc2

posted on 3 years ago — updated on 1 second ago

60
views

212-81시험대비 최신 덤프모음집,212-81인기자격증 시험덤프 최신자료,212-81인증시험 덤프자료,212-81최신버전덤프,212-81최신버전 인기 시험자료, 212-81시험대비최신덤프모음집시험준비에가장좋은시험기출문제와예상문제모음자료

IT인증시험문제는 수시로 변경됩니다. 이 점을 해결하기 위해ITDumpsKR의EC-COUNCIL인증 212-81덤프도 시험변경에 따라 업데이트하도록 최선을 다하고 있습니다.시험문제 변경에 초점을 맞추어 업데이트를 진행한후 업데이트된EC-COUNCIL인증 212-81덤프를 1년간 무료로 업데이트서비스를 드립니다.

EC-COUNCIL 212-81: Certified Encryption Specialist (CES) 시험은 암호화 기술을 통해 안전한 통신 채널을 디자인, 구현 및 유지 관리하는 데 필요한 지식과 기술을 검증하는 엄격한 자격증입니다. 이 시험은 조직의 중요한 데이터를 보호하기 위해 암호화와 암호 해독 기술에 대한 지식과 기술을 향상시키고자 하는 전문가들을 대상으로 설계되었습니다.

>> 212-81시험대비 최신 덤프모음집 <<

212-81인기자격증 시험덤프 최신자료 & 212-81인증시험 덤프자료

만약ITDumpsKR선택여부에 대하여 망설이게 된다면 여러분은 우선 우리ITDumpsKR 사이트에서 제공하는EC-COUNCIL 212-81관련자료의 일부분 문제와 답 등 샘플을 무료로 다운받아 체험해볼 수 있습니다. 체험 후 우리의ITDumpsKR에 신뢰감을 느끼게 됩니다. 우리ITDumpsKR는 여러분이 안전하게EC-COUNCIL 212-81시험을 패스할 수 있는 최고의 선택입니다. ITDumpsKR을 선택함으로써 여러분은 성공도 선택한것이라고 볼수 있습니다.

EC-COUNCIL 212-81 (Certified Encryption Specialist) 시험은 암호화 분야의 개인들의 기술과 지식을 검증하기 위한 전문 자격증입니다. 이는 산업에서 높게 평가되며, 암호화 기술의 개발, 적용 및 관리에 참여하는 전문가들을 대상으로 합니다. 이 자격증 시험은 암호학, 암호화 알고리즘, 키 관리 및 네트워크 보안 등 다양한 주제를 다룹니다.

EC-Council 212-81 (Certified Encryption Specialist) 자격증 시험은 암호화 및 데이터 보호에 특화하고자 하는 전문가들에게 유용한 자격증입니다. 이 자격증은 전 세계적으로 인정받는 자격증으로, 후보자의 암호화 솔루션 구현 및 관리 능력을 증명합니다. 이 자격증을 취득함으로써 전문가들은 자신의 경력 전망을 향상시키고 취업 시장에서 경쟁 우위를 얻을 수 있습니다.

최신 ECES 212-81 무료샘플문제 (Q19-Q24):

질문 # 19
An attack that is particularly successful against block ciphers based on substitution-permutation networks. For a block size b, holds b-k bits constant and runs the other k through all 2k possibilities. For k=1, this is just deferential cryptanalysis, but with k>1 it is a new technique.

A. Integral Cryptanalysis
B. Differential Cryptanalysis
C. Chosen Plaintext Attack
D. Linear Cryptanalysis

정답：A

설명：
Integral Cryptanalysis
https://en.wikipedia.org/wiki/Integral_cryptanalysis
Integral cryptanalysis is a cryptanalytic attack that is particularly applicable to block ciphers based on substitution-permutation networks. It was originally designed by Lars Knudsen as a dedicated attack against Square, so it is commonly known as the Square attack. It was also extended to a few other ciphers related to Square: CRYPTON, Rijndael, and SHARK. Stefan Lucks generalized the attack to what he called a saturation attack and used it to attack Twofish, which is not at all similar to Square, having a radically different Feistel network structure. Forms of integral cryptanalysis have since been applied to a variety of ciphers, including Hierocrypt, IDEA, Camellia, Skipjack, MISTY1, MISTY2, SAFER++, KHAZAD, and FOX (now called IDEA NXT).
Incorrect answers:
Chosen Plaintext Attack - is an attack model for cryptanalysis which presumes that the attacker can obtain the ciphertexts for arbitrary plaintexts. The goal of the attack is to gain information that reduces the security of the encryption scheme.
Linear Cryptanalysis - is a general form of cryptanalysis based on finding affine approximations to the action of a cipher. Attacks have been developed for block ciphers and stream ciphers. Linear cryptanalysis is one of the two most widely used attacks on block ciphers.
Differential Cryptanalysis - is a general form of cryptanalysis applicable primarily to block ciphers, but also to stream ciphers and cryptographic hash functions. In the broadest sense, it is the study of how differences in information input can affect the resultant difference at the output. In the case of a block cipher, it refers to a set of techniques for tracing differences through the network of transformation, discovering where the cipher exhibits non-random behavior, and exploiting such properties to recover the secret key (cryptography key).

질문 # 20
A type of frequency analysis used to attack polyalphabetic substitution ciphers. It's used to try to discover patterns and use that information to decrypt the cipher.

A. Birthday Attack
B. Integral Cryptanalysis
C. Kasiski Method
D. Information Deduction

정답：C

설명：
Kasiski Method
https://en.wikipedia.org/wiki/Kasiski_examination
In cryptanalysis, Kasiski examination (also referred to as Kasiski's test or Kasiski's method) is a method of attacking polyalphabetic substitution ciphers, such as the Vigenere cipher. It was first published by Friedrich Kasiski in 1863, but seems to have been independently discovered by Charles Babbage as early as 1846.
Incorrect answers:
Integral Cryptanalysis - uses lots of sets of plaintext that are similar with slight modifications. These are encrypted and then the variations are analyzed to determine if there's anything that can be zeroed in on.
Information Deduction - the attacker gains some Shannon information about plaintexts (or ciphertexts) not previously known.
Birthday Attack - cryptographic attack that exploits the mathematics behind the birthday problem in the probability theory forces collisions within hashing functions.

질문 # 21
Protocol suite provides a method of setting up a secure channel for protected data exchange between two devices.

A. OCSP
B. IPSec
C. CLR
D. TLS

정답：B

설명：
IPSec
https://en.wikipedia.org/wiki/IPsec
Internet Protocol Security (IPsec) is a secure network protocol suite that authenticates and encrypts the packets of data to provide secure encrypted communication between two computers over an Internet Protocol network. It is used in virtual private networks (VPNs).
Incorrect answers:
OCSP - Online Certificate Status Protocol (OCSP) is an Internet protocol used for obtaining the revocation status of an X.509 digital certificate.
CRL - is a list of digital certificates that have been revoked by the issuing certificate authority (CA) before their scheduled expiration date and should no longer be trusted.
TLS - Transport Layer Security, and its now-deprecated predecessor, Secure Sockets Layer (SSL), are cryptographic protocols designed to provide communications security over a computer network. Several versions of the protocols find widespread use in applications such as web browsing, email, instant messaging, and voice over IP (VoIP). Websites can use TLS to secure all communications between their servers and web browsers.

질문 # 22
Cryptographic hashes are often used for message integrity and password storage. It is important to understand the common properties of all cryptographic hashes. What is not true about a hash?

A. Variable length input
B. Fixed length output
C. Reversible
D. Few collisions

정답：C

설명：
Reversible
https://en.wikipedia.org/wiki/Hash_function
Hash functions are not reversible.
Incorrect answers:
Fixed length output and Variable length input. Hash function receive variable length input and produce fixed length output Few collisions. Every hash function with more inputs than outputs will necessarily have collisions

질문 # 23
In a Feistel cipher, the two halves of the block are swapped in each round. What does this provide?

A. Substitution
B. Diffusion
C. Avalanche
D. Confusion

정답：D

설명：
Confusion
https://en.wikipedia.org/wiki/Confusion_and_diffusion#Definition
Confusion means that each binary digit (bit) of the ciphertext should depend on several parts of the key, obscuring the connections between the two.
The property of confusion hides the relationship between the ciphertext and the key.
This property makes it difficult to find the key from the ciphertext and if a single bit in a key is changed, the calculation of the values of most or all of the bits in the ciphertext will be affected.
Confusion increases the ambiguity of ciphertext and it is used by both block and stream ciphers.
Incorrect answer:
Avalanche - The avalanche effect is the desirable property of cryptographic algorithms, typically block ciphers and cryptographic hash functions, wherein if an input is changed slightly (for example, flipping a single bit), the output changes significantly (e.g., half the output bits flip). In the case of high-quality block ciphers, such a small change in either the key or the plaintext should cause a drastic change in the ciphertext. The actual term was first used by Horst Feistel, although the concept dates back to at least Shannon's diffusion.
Diffusion - Diffusion means that if we change a single bit of the plaintext, then (statistically) half of the bits in the ciphertext should change, and similarly, if we change one bit of the ciphertext, then approximately one half of the plaintext bits should change.[2] Since a bit can have only two states, when they are all re-evaluated and changed from one seemingly random position to another, half of the bits will have changed state.
Substitution - Substitution technique is a classical encryption technique where the characters present in the original message are replaced by the other characters or numbers or by symbols.

질문 # 24
......

212-81인기자격증 시험덤프 최신자료: https://www.itdumpskr.com/212-81-exam.html