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IT업계 종사자라면 누구나 WGU 인증Introduction-to-Cryptography시험을 패스하고 싶어하리라고 믿습니다. 많은 분들이 이렇게 좋은 인증시험은 아주 어렵다고 생각합니다. 네 맞습니다. 패스할 확율은 아주 낮습니다. 노력하지 않고야 당연히 불가능한 일이 아니겠습니까? WGU 인증Introduction-to-Cryptography 시험은 기초 지식 그리고 능숙한 전업지식이 필요 합니다. DumpTOP는 여러분들한테WGU 인증Introduction-to-Cryptography시험을 쉽게 빨리 패스할 수 있도록 도와주는 사이트입니다. DumpTOP의WGU 인증Introduction-to-Cryptography시험관련 자료로 여러분은 짧은 시간내에 간단하게 시험을 패스할수 있습니다. 시간도 절약하고 돈도 적게 들이는 이런 제안은 여러분들한테 딱 좋은 해결책이라고 봅니다.
| Section | Weight | Objectives |
|---|---|---|
| Symmetric Encryption | 25% | - Block vs stream ciphers, modes of operation (ECB, CBC, OFB, CFB) - Principles and operation - Algorithms: AES, DES, 3DES, Blowfish - Key generation, distribution, and management challenges |
| Hash Functions & Data Integrity | 15% | - Algorithms: SHA-1, SHA-256, SHA-3, MD5 - Uses: integrity checks, password storage, message authentication - Properties: collision resistance, one-way function - HMAC construction and application |
| Cryptography Fundamentals | 20% | - Historical evolution and modern applications - Core goals: confidentiality, integrity, authentication, non-repudiation - Basic terminology: plaintext, ciphertext, algorithm, key |
| Asymmetric Encryption & Public Key Infrastructure | 25% | - Certificate lifecycle: creation, validation, revocation - Digital signatures: purpose and process - Principles: public/private key pairs - PKI components: certificates, CAs, trust models - Algorithms: RSA, ECC, Diffie-Hellman |
| Implementation & Best Practices | 5% | - Common mistakes and vulnerabilities - Selecting appropriate algorithms and key sizes - Standards and compliance |
| Key Management & Secure Protocols | 10% | - Key generation, storage, exchange, and destruction - Cryptographic attacks: brute force, birthday, man-in-the-middle - Secure protocols: TLS/SSL, IPsec, SSH, PGP |
>> Introduction-to-Cryptography완벽한 공부문제 <<
WGU Introduction-to-Cryptography인증시험덤프는 적중율이 높아 100% WGU Introduction-to-CryptographyWGU Introduction-to-Cryptography시험에서 패스할수 있게 만들어져 있습니다. 덤프는 IT전문가들이 최신 실러버스에 따라 몇년간의 노하우와 경험을 충분히 활용하여 연구제작해낸 시험대비자료입니다. 저희 WGU Introduction-to-Cryptography덤프는 모든 시험유형을 포함하고 있는 퍼펙트한 자료기에 한방에 시험패스 가능합니다.
질문 # 93
(What is an attribute of RC4 when used with WEP?)
정답：B
설명：
In classic WEP deployments, RC4 was used with what is commonly called "40-bit WEP" (also labeled
"64-bit WEP" because it combines a 40-bit secret key with a 24-bit IV to form a 64-bit RC4 seed). The key attribute emphasized in many foundational descriptions of WEP is this 40-bit shared secret length, which was originally chosen due to export restrictions and legacy constraints. Although "104-bit WEP" (sometimes called "128-bit WEP," again counting the 24-bit IV) also existed, the option set here points to the historically standard and widely referenced attribute: a 40-bit key when RC4 is used in WEP.
Importantly, WEP's security failure is not only about key size; the 24-bit IV is too small and repeats frequently, and WEP's key scheduling vulnerabilities combined with IV reuse allow attackers to recover the secret key with enough captured frames. Still, among the given options, the correct attribute is the 40-bit key.
질문 # 94
(Which symmetric encryption technique uses a 112-bit key size and a 64-bit block size?)
정답：C
설명：
3DES (Triple DES) is a symmetric block cipher that retains DES's 64-bit block size while increasing effective security by applying DES multiple times. The common "two-key 3DES" variant uses two independent 56-bit DES keys (K1 and K2) in an Encrypt-Decrypt-Encrypt (EDE) sequence: Encrypt with K1, Decrypt with K2, then Encrypt again with K1. Because each DES key is 56 bits (ignoring parity bits), the total keying material is 112 bits. This matches the question's "112-bit key size and 64-bit block size." Plain DES uses only a 56-bit effective key and a 64-bit block size, so it does not match the 112-bit key size. AES has a 128-bit block size and key sizes of 128/192/256. IDEA uses a 64-bit block size but has a 128-bit key.
Therefore, the correct algorithm is 3DES. Although 3DES improved on DES, it is now considered legacy due to its small 64-bit block size (birthday-bound issues for large data volumes) and performance overhead compared to AES.
질문 # 95
(What is an attribute of RC4 when used with WEP?)
정답：B
설명：
In classic WEP deployments, RC4 was used with what is commonly called "40-bit WEP" (also labeled "64- bit WEP" because it combines a 40-bit secret key with a 24-bit IV to form a 64-bit RC4 seed). The key attribute emphasized in many foundational descriptions of WEP is this 40-bit shared secret length, which was originally chosen due to export restrictions and legacy constraints. Although "104-bit WEP" (sometimes called "128-bit WEP," again counting the 24-bit IV) also existed, the option set here points to the historically standard and widely referenced attribute: a 40-bit key when RC4 is used in WEP. Importantly, WEP's security failure is not only about key size; the 24-bit IV is too small and repeats frequently, and WEP's key scheduling vulnerabilities combined with IV reuse allow attackers to recover the secret key with enough captured frames. Still, among the given options, the correct attribute is the 40-bit key.
질문 # 96
(What is a component of a one-time password (OTP) that is needed to guess future iterations of passwords?)
정답：D
설명：
OTP systems (such as HOTP and TOTP) generate a sequence of passwords using a shared secret and a moving factor (counter or time). The critical secret that underpins the ability to compute past or future OTP values is the seed (also called the shared secret key). In HOTP, the seed is used with an HMAC function and an incrementing counter; in TOTP, the seed is used with HMAC and a time-step value. If an attacker obtains the seed and knows the algorithm and moving factor, they can compute future OTPs. The "function" and "encryption algorithm" are typically standardized and public; security relies on keeping the seed secret. An initialization vector is not a standard OTP component in HOTP
/TOTP generation. Therefore, the component needed to predict future OTP values is the seed.
Protecting the seed is essential: it should be stored securely (e.g., hardware token secure storage) and transmitted only through controlled provisioning processes. If compromised, OTP becomes predictable and no longer serves as a strong second factor.
질문 # 97
(What is the correlation between the number of rounds and the key length used in the AES algorithm?)
정답：B
설명：
In AES, the number of rounds is explicitly tied to the key length. AES-128 uses 10 rounds, AES-192 uses 12 rounds, and AES-256 uses 14 rounds. The purpose of additional rounds is to increase diffusion and confusion, strengthening resistance against cryptanalysis as the key schedule and state transformations iterate more times. Although key length primarily affects brute-force resistance, AES's designers and standardization parameters link longer keys with more rounds to maintain security margins across variants, especially considering differences in the key schedule structure. Thus, as key length increases from 128 to 192 to 256 bits, the number of rounds increases correspondingly from 10 to 12 to 14. This relationship is fixed by the AES specification and does not vary dynamically at runtime. Therefore, the correct correlation is that the number of rounds increases as the key length increases.
질문 # 98
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