{{asɛmtiNe Ɔkyerɛwfo}} | Nhomakorabea | Nneɛma a ɛma wotumi yɛ ade

1

A student encrypts a file before saving it. Which statement best describes what happens during encryption?

The file is compressed to reduce its size

The file is automatically backed up to a secure server

The file is transformed from readable data into unreadable data using a key

The file is converted into a format that can only be opened on the same computer

1

A teacher explains that ciphertext looks like random characters. What does this indicate about the data?

It has been copied into a different file format

It has been deleted and cannot be recovered

It has been encrypted to hide its meaning

It has been compressed to save space

1

A system uses an algorithm and a key to convert readable data into unreadable data. What is the readable data called before encryption?

Ciphertext

Hash value

Plaintext

Keyspace

1

A user opens an encrypted file by entering a password, which allows the file to become readable again. What process is occurring?

Encryption

Authentication

Decryption

Compression

1

A company wants to make it harder for attackers to guess encryption keys. Which change would most improve security?

Using a faster algorithm

Reducing the size of the data

Increasing the number of possible keys

Storing the key in a text file

1

An attacker attempts every possible key until the correct one is found. What type of attack is this?

Phishing attack

Man-in-the-middle attack

Brute force attack

Denial of service attack

1

Two systems use different key lengths. One uses a 4-digit PIN, and the other uses a 128-bit key. Why is the second system more secure?

It encrypts data faster

It uses two keys instead of one

It has a much larger keyspace

It does not require a password

1

A student claims that increasing the keyspace makes encryption harder to break because it changes the algorithm. Why is this incorrect?

The algorithm becomes weaker with a larger keyspace

Keyspace refers to the number of possible keys, not the algorithm itself

A larger keyspace removes the need for encryption

Keyspace only applies to asymmetric encryption

1

A messaging app uses the same key to encrypt and decrypt messages between users. What type of encryption is this?

Asymmetric encryption

Block encryption

Symmetric encryption

Stream encryption

1

A website uses one key to encrypt data sent by users and a different key to decrypt it on the server. What type of encryption is being used?

Symmetric encryption

Block encryption

Asymmetric encryption

Stream encryption

1

Why is symmetric encryption considered less secure for communication over the internet?

It cannot encrypt large amounts of data

The shared key could be intercepted during transmission

It requires two keys instead of one

It only works on stored data

1

Which is an advantage of asymmetric encryption compared to symmetric encryption?

It is faster and uses less processing power

It requires fewer keys to manage

It allows secure communication without sharing a secret key first

It only works on small files

1

A system encrypts a file by dividing it into fixed-size chunks and encrypting each chunk separately. What type of encryption is this?

Stream encryption

Asymmetric encryption

Block encryption

Hashing

1

A live video call is encrypted continuously as data is transmitted. What type of encryption is being used?

Block encryption

Symmetric encryption

Stream encryption

Disk encryption

1

Why is stream encryption often used for live video or audio?

It stores data more efficiently

It uses a larger keyspace

It can encrypt data continuously in real time

It eliminates the need for a key

1

A student says block encryption is better for live streaming because it processes data in chunks. Why is this incorrect?

Block encryption does not use keys

Block encryption is less suited for continuous real-time data

Block encryption is only used for passwords

Block encryption cannot produce ciphertext

1

A laptop is stolen, but the attacker cannot access any files because the drive is encrypted. What security feature is most likely being used?

Antivirus software

Firewall protection

Full disk encryption

Two-factor authentication

1

What is the main purpose of full disk encryption (FDE)?

To speed up file access

To prevent malware infections

To protect all data stored on a device

To back up files automatically

1

When full disk encryption is enabled, when must the user typically enter a password or key?

After opening each individual file

While browsing the internet

When the computer starts up

Only when installing new software

1

Why is data vulnerable on a device without full disk encryption?

It cannot be accessed by the operating system

It is automatically deleted when powered off

It can be read if someone gains physical access to the device

It is stored in multiple locations

1

What role does a Trusted Platform Module (TPM) play in full disk encryption?

It stores user passwords in plain text

It connects the computer to the internet

It securely manages and stores encryption keys

It scans files for viruses

1

Which tool is commonly used to enable full disk encryption on Windows systems?

FileVault

OpenSSL

BitLocker

AES Crypt

1

Which tool is commonly used to enable full disk encryption on Mac systems?

BitLocker

OpenSSL

FileVault

AES Crypt

1

A user encrypts a USB drive to protect sensitive files. What type of protection is being applied?

Network encryption

Application encryption

Disk encryption on external storage

Stream encryption

1

A student claims that encryption alone guarantees complete security of data. Why is this incorrect?

Encryption makes data easier to access

Security also depends on key management and system protections

Encryption only works on external drives

Encryption removes the need for authentication

AP Cybersecurity: 5.3A - CFUs

AP Cybersecurity: 5.3A - CFUs

A student encrypts a file before saving it. Which statement best describes what happens during encryption?

A teacher explains that ciphertext looks like random characters. What does this indicate about the data?

A system uses an algorithm and a key to convert readable data into unreadable data. What is the readable data called before encryption?

A user opens an encrypted file by entering a password, which allows the file to become readable again. What process is occurring?

A company wants to make it harder for attackers to guess encryption keys. Which change would most improve security?

An attacker attempts every possible key until the correct one is found. What type of attack is this?

Two systems use different key lengths. One uses a 4-digit PIN, and the other uses a 128-bit key. Why is the second system more secure?

A student claims that increasing the keyspace makes encryption harder to break because it changes the algorithm. Why is this incorrect?

A messaging app uses the same key to encrypt and decrypt messages between users. What type of encryption is this?

A website uses one key to encrypt data sent by users and a different key to decrypt it on the server. What type of encryption is being used?

Why is symmetric encryption considered less secure for communication over the internet?

Which is an advantage of asymmetric encryption compared to symmetric encryption?

A system encrypts a file by dividing it into fixed-size chunks and encrypting each chunk separately. What type of encryption is this?

A live video call is encrypted continuously as data is transmitted. What type of encryption is being used?

Why is stream encryption often used for live video or audio?

A student says block encryption is better for live streaming because it processes data in chunks. Why is this incorrect?

A laptop is stolen, but the attacker cannot access any files because the drive is encrypted. What security feature is most likely being used?

What is the main purpose of full disk encryption (FDE)?

When full disk encryption is enabled, when must the user typically enter a password or key?

Why is data vulnerable on a device without full disk encryption?

What role does a Trusted Platform Module (TPM) play in full disk encryption?

Which tool is commonly used to enable full disk encryption on Windows systems?

Which tool is commonly used to enable full disk encryption on Mac systems?

A user encrypts a USB drive to protect sensitive files. What type of protection is being applied?

A student claims that encryption alone guarantees complete security of data. Why is this incorrect?

A student encrypts a file before saving it. Which statement best describes what happens during encryption?

A teacher explains that ciphertext looks like random characters. What does this indicate about the data?

A system uses an algorithm and a key to convert readable data into unreadable data. What is the readable data called before encryption?

A user opens an encrypted file by entering a password, which allows the file to become readable again. What process is occurring?

A company wants to make it harder for attackers to guess encryption keys. Which change would most improve security?

An attacker attempts every possible key until the correct one is found. What type of attack is this?

Two systems use different key lengths. One uses a 4-digit PIN, and the other uses a 128-bit key. Why is the second system more secure?

A student claims that increasing the keyspace makes encryption harder to break because it changes the algorithm. Why is this incorrect?

A messaging app uses the same key to encrypt and decrypt messages between users. What type of encryption is this?

A website uses one key to encrypt data sent by users and a different key to decrypt it on the server. What type of encryption is being used?

Why is symmetric encryption considered less secure for communication over the internet?

Which is an advantage of asymmetric encryption compared to symmetric encryption?

A system encrypts a file by dividing it into fixed-size chunks and encrypting each chunk separately. What type of encryption is this?

A live video call is encrypted continuously as data is transmitted. What type of encryption is being used?

Why is stream encryption often used for live video or audio?

A student says block encryption is better for live streaming because it processes data in chunks. Why is this incorrect?

A laptop is stolen, but the attacker cannot access any files because the drive is encrypted. What security feature is most likely being used?

What is the main purpose of full disk encryption (FDE)?

When full disk encryption is enabled, when must the user typically enter a password or key?

Why is data vulnerable on a device without full disk encryption?

What role does a Trusted Platform Module (TPM) play in full disk encryption?

Which tool is commonly used to enable full disk encryption on Windows systems?

Which tool is commonly used to enable full disk encryption on Mac systems?

A user encrypts a USB drive to protect sensitive files. What type of protection is being applied?

A student claims that encryption alone guarantees complete security of data. Why is this incorrect?