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Changing the Concept of Introduction-to-Cryptography Exam Preparation 2026

NO.36 (What is the significance of the Nobody But Us (NOBUS) principle in cryptography?)

It refers to a cryptographic key that can be accessed by anyone.

It denotes a cryptographic algorithm with known weaknesses.

It represents a widely used encryption standard.

It indicates that a vulnerability is so difficult to exploit that only the entity that created it can exploit it.

NO.37 (Which cryptographic operation has the fastest decryption process?)

Padding

Symmetric

Hashing

Asymmetric

NO.38 (What is the primary purpose of the Health Insurance Portability and Accountability Act (HIPAA) in relation to encryption?)

To standardize the use of encryption across all industries

To prohibit the use of electronic health records

To allow healthcare providers to encrypt patient records at their discretion

To ensure the confidentiality of patient information through secure measures like encryption

NO.39 (Which attack maps hashed values to their original input data?)

Dictionary

Rainbow table

Birthday

Brute-force

NO.40 (A security analyst is using 3DES for data encryption. Which 3DES key size is valid?)

128-bit

2,048-bit

56-bit

112-bit

NO.41 (Which authentication method allows a web service installed on a network operating system to prove its identity to a customer?)

One-way client authentication

One-way server authentication

Mutual authentication

End-to-end authentication

NO.42 (Which cipher uses shifting letters of the alphabet for encryption?)

SHA-1

Vigenere

Bifid

Caesar

NO.43 (What is a focus of the ISO/IEC 27001 standard?)

Development of new encryption algorithms

Risk management and continuous improvement of information security

Enforcement of criminal penalties for data breaches

Exclusively addressing network security

NO.44 (How are limits managed for the number of bitcoins that can be created and stored in a blockchain?)

Rewards for mining reduce over time

The total number of participants has been set

A maximum has been established per country

Each person has a maximum number

NO.45 (Which symmetric encryption technique uses a 256-bit key size and a 128-bit block size?)

3DES

DES

IDEA

AES

NO.46 (Why did the National Institute of Standards and Technology (NIST) choose Ascon for lightweight cryptography?)

To authenticate users during data transmission

To ensure compatibility with legacy systems

To provide a secure and efficient encryption solution for resource-constrained devices

To encrypt data at rest

NO.47 (How does Electronic Codebook (ECB) mode encryption function?)

Converts from block to stream, then uses a counter value and a nonce to encrypt the data

Uses a self-synchronizing stream on the blocks, where the IV is encrypted and XORed with the data stream

Uses an IV to encrypt the first block, then uses the result to encrypt the next block

Encrypts each block with the same key, where each block is independent of the others

NO.48 (Which encryption process sends a list of cipher suites that are supported for encrypted communications?)

Forward secrecy

ServerHello

ClientHello

Integrity check

NO.49 (What does nonrepudiation aim to achieve in the context of cryptography?)

Verifying the identity of the sender in secure communication

Holding parties accountable for their actions and transactions

Ensuring the confidentiality of encrypted messages

Preventing unauthorized access to sensitive data

NO.50 (What is an attribute of RC4 when used with WEP?)

40-bit key

128-bit key

256-bit key

512-bit key

NO.51 (Why is lightweight cryptography important in modern information security?)

To complicate data protection measures

To ensure secure communication on high-speed networks

To limit the use of encryption tools in organizations

To address the security needs of Internet of Things (IoT) devices and mobile applications

NO.52 (Which encryption algorithm encrypts with one key, decrypts with another key, and then encrypts with the first key?)

IDEA

AES

3DES

DES

NO.53 (Why should an asymmetric private key be used to encrypt the digest of an application?)

An asymmetric private key uses the same key to encrypt and decrypt large amounts of media, one bit at a time.

An asymmetric private key signs files by signing (encrypting) the hash of a file so integrity and authenticity can be verified with the corresponding public key.

An asymmetric private key encrypts and decrypts data in blocks of characters at a time with a complex algorithm.

An asymmetric private key encrypts a small amount of information, which is decrypted with the corresponding private key.

NO.54 (How does a cryptographic policy contribute to incident response?)

By providing guidelines for secure data recovery and communication

By limiting the use of encryption tools during incidents

By slowing down the incident resolution process

By increasing the likelihood of data breaches

NO.55 (Which operation can be performed on a certificate during the “Issued” stage?)

Creation

Key recovery

Distribution

Key archiving

NO.56 (Why should an administrator choose lightweight cryptography?)

The desktop is in a secure area of the building.

The embedded system has limited resources.

The payload requires complex rounds of encryption.

The data requires minimal protection due to the sensitivity level.

NO.57 (What is the length of the Initialization Vector (IV) in WEP?)

24 bits

40 bits

48 bits

56 bits

NO.58 (Which technique involves spotting variations in encrypted data and plotting how the characters relate to standard English characters?)

Brute force

Frequency analysis

Known plaintext

Chosen ciphertext

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(Aug-2026) Latest Introduction-to-Cryptography Dumps for Success in Actual WGU Certified [Q36-Q58]