NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam - NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam

Question 1

Which statement best describes symmetric key encryption?

The same secret key is used for both encrypting and decrypting data. A public key encrypts data while a private key decrypts it. A one-way mathematical function generates a unique hash value. Data is signed using a digital certificate from a certificate authority.

Correct Answer:

The same secret key is used for both encrypting and decrypting data.

Question 2

In asymmetric encryption, which key is kept secret by the owner and used to decrypt incoming messages?

The public key The private key The session key The parity key

Correct Answer:

The private key

Question 3

How does a basic Caesar cipher encrypt plaintext messages?

It scrambles letter positions according to a random permutation grid. It substitutes each letter by swapping vowels and consonants. It shifts each letter in the alphabet by a fixed numerical offset. It converts characters into binary ASCII codes and performs an XOR operation.

Correct Answer:

It shifts each letter in the alphabet by a fixed numerical offset.

Question 4

What is the primary difference between encryption and cryptographic hashing?

Encryption produces variable output lengths whereas hashing always produces short numbers. Encryption requires internet connectivity whereas hashing works offline. Encryption can only process plain text whereas hashing works on binary files. Encryption is a two-way process (reversible), whereas hashing is a one-way process (irreversible).

Correct Answer:

Encryption is a two-way process (reversible), whereas hashing is a one-way process (irreversible).

Question 5

If an 8-bit binary system uses EVEN parity and the 7 data bits are 1011001, what must the parity bit be set to?

0 1 2 10

Correct Answer:

N/A

Question 1

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Prepare with the NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam practice quiz. This question bank includes 100 questions covering network, data, primary, table, and parity. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam

This practice set contains 100 questions from the matching question bank and focuses on network, data, primary, table, and parity. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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NCEA Level 2 Digital Technologies Practice Questions - NCEA Level 2 Digital Technologies (NZQA Standards 91890-91899) Exam

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