AQA GCSE BIOLOGY HIGHER TIER
PAPER 1H CERTIFICATION SCRIPT
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
◍ An example of discretionary spending is _______..
Answer: Nonessential goods and services
◍ Why do stores like mobile pay apps?.
Answer: It makes paying easier and faster, so customers are more likely to
overspend
◍ In the 1970s, the _________ was the only organization in the
U. S. government with cryptographic expertise..
Answer: NSA
◍ Alice is using volume encryption on her laptop. Which of the following
attacks are blocked by volume encryption, instead of other techniques, like
file encryption or access controls? Select all that apply..
Answer: Someone steals Alice's laptop.Alice forgets to explicitly encrypt a
sensitive file.
◍ Why is digital ad spending projected to be $524 billion in 2024?.
Answer: Marketers know that you're on your mobile device more than
you're reading newspaper ads or listening to live radio ads
◍ When someone steals and uses your debit or credit card info, that's called
______________..
Answer: Fraud
◍ Bob needs to deploy an efficient block cipher. He has a choice between
128-bit AES and Triple DES using three different keys. Which of the
, following statements is most accurate about these choices?.
Answer: AES is more efficient than triple DES and it proves better security.
◍ What does it mean to develop power over purchase?.
Answer: You are able to slow down and think through your motives before
buying something.
◍ We have an operating system that includes built-in file encryption. When we
consider the layers of system software, where does the file encryption
reside?.
Answer: Between the file system and the application layer.
◍ Why should a self-encrypting hard drive wrap its working keys when the
drive is locked?.
Answer: It protects the key from electronic probing and extraction even if
the drive is powered off.
◍ To think big picture, you need to understand that . . ..
Answer: The best way to have more money is to have contentment
◍ We are encrypting a volume using XTS mode as described in Section 9.4.3.
Given the ciphertext changes and results listed below, which will occur in
XTS mode? Select all that apply..
Answer: If we swap two data blocks on the sector, the only plaintext
affected are from those two data blocks.If we rewrite the entire sector with a
previous version of its contents, the sector will decrypt correctly.
◍ Which of the following key sizes are supported by Triple DES? Select all
that apply..
Answer: 11256168
◍ We receive several blocks of ciphertext in OFB mode. An error has changed
a single bit in the middle of the ciphertext. How much of the plaintext will
be affected by the error when we decrypt it?.
Answer: One bit
◍ T/F: Changing a single bit of a block cipher's input affects the entire output
PAPER 1H CERTIFICATION SCRIPT
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
◍ An example of discretionary spending is _______..
Answer: Nonessential goods and services
◍ Why do stores like mobile pay apps?.
Answer: It makes paying easier and faster, so customers are more likely to
overspend
◍ In the 1970s, the _________ was the only organization in the
U. S. government with cryptographic expertise..
Answer: NSA
◍ Alice is using volume encryption on her laptop. Which of the following
attacks are blocked by volume encryption, instead of other techniques, like
file encryption or access controls? Select all that apply..
Answer: Someone steals Alice's laptop.Alice forgets to explicitly encrypt a
sensitive file.
◍ Why is digital ad spending projected to be $524 billion in 2024?.
Answer: Marketers know that you're on your mobile device more than
you're reading newspaper ads or listening to live radio ads
◍ When someone steals and uses your debit or credit card info, that's called
______________..
Answer: Fraud
◍ Bob needs to deploy an efficient block cipher. He has a choice between
128-bit AES and Triple DES using three different keys. Which of the
, following statements is most accurate about these choices?.
Answer: AES is more efficient than triple DES and it proves better security.
◍ What does it mean to develop power over purchase?.
Answer: You are able to slow down and think through your motives before
buying something.
◍ We have an operating system that includes built-in file encryption. When we
consider the layers of system software, where does the file encryption
reside?.
Answer: Between the file system and the application layer.
◍ Why should a self-encrypting hard drive wrap its working keys when the
drive is locked?.
Answer: It protects the key from electronic probing and extraction even if
the drive is powered off.
◍ To think big picture, you need to understand that . . ..
Answer: The best way to have more money is to have contentment
◍ We are encrypting a volume using XTS mode as described in Section 9.4.3.
Given the ciphertext changes and results listed below, which will occur in
XTS mode? Select all that apply..
Answer: If we swap two data blocks on the sector, the only plaintext
affected are from those two data blocks.If we rewrite the entire sector with a
previous version of its contents, the sector will decrypt correctly.
◍ Which of the following key sizes are supported by Triple DES? Select all
that apply..
Answer: 11256168
◍ We receive several blocks of ciphertext in OFB mode. An error has changed
a single bit in the middle of the ciphertext. How much of the plaintext will
be affected by the error when we decrypt it?.
Answer: One bit
◍ T/F: Changing a single bit of a block cipher's input affects the entire output
