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Storage encryption primarily protects data in which state?
a. In transit
b. At rest
c. During transmission
d. During processing
Answer: b. At resthhs+1
What is Full Disk Encryption (FDE)?
a. Encrypting selected folders
b. Encrypting only temporary files
c. Encrypting the entire storage drive including the OS
d. Encrypting network packets
Answer: c. Encrypting the entire storage drive including the OShhs
Which U.S. agency provides guidelines for storage encryption on end-user devices?
a. NSA
b. NIST
c. ISO
d. IEEE
Answer: b. NISThhs
Which encryption technique encrypts database files automatically at the storage level?
a. RSA
b. Transparent Data Encryption (TDE)
c. DES
d. ECC
Answer: b. Transparent Data Encryption (TDE)satoricyber
Which key type is used in symmetric encryption?
a. Public key
b. Private key
c. Single shared key
d. Dynamic key pair
Answer: c. Single shared keydarktrace+1
Which algorithm is the industry standard for storage-level data encryption?
a. AES
b. RSA
c. ECC
d. MD5
Answer: a. AESdarktrace+1
What is the main purpose of storage encryption?
a. Data compression
b. Speed optimization
c. Prevent unauthorized data access
d. Increase memory usage
Answer: c. Prevent unauthorized data accesscpl.thalesgroup+1
Which encryption method uses two different keys?
a. Symmetric
b. Asymmetric
c. Hashing
d. Stream encryption
Answer: b. Asymmetricdarktrace
Data at rest usually refers to data stored on:
a. Routers
b. Storage devices
c. Switches
d. Firewalls
Answer: b. Storage devicessatoricyber
Which encryption algorithm succeeded DES for stronger security?
a. Blowfish
b. AES
c. RC4
d. SHA-1
Answer: b. AESdarktrace
Which encryption form protects a complete virtual or mounted disk volume?
a. File encryption
b. Volume encryption
c. Hashing
d. Cloud tokenization
Answer: b. Volume encryptionhhs
What does “data at rest” refer to?
a. Data being transmitted
b. Data idle in storage
c. Data in processing
d. Data backup only
Answer: b. Data idle in storagesatoricyber
Which of the following is NOT a type of storage encryption?
a. Full disk encryption
b. Volume encryption
c. File/folder encryption
d. Network encryption
Answer: d. Network encryptionhhs
What is Transparent Data Encryption mainly used for?
a. Cloud-based backups
b. File compression
c. Encrypting databases
d. Encrypting emails
Answer: c. Encrypting databasessatoricyber
AES uses which block size by default?
a. 64 bits
b. 128 bits
c. 256 bits
d. 512 bits
Answer: b. 128 bitsdarktrace
The AES key length can be up to:
a. 64 bits
b. 128 bits
c. 256 bits
d. 512 bits
Answer: c. 256 bitsdarktrace
Which algorithm is a symmetric key cipher?
a. RSA
b. ECC
c. Blowfish
d. DSA
Answer: c. Blowfishdarktrace
RSA is primarily used for:
a. File compression
b. Public-key encryption
c. Hashing data
d. Disk wiping
Answer: b. Public-key encryptiondarktrace
ECC offers what advantage over RSA?
a. Uses smaller key sizes with equal security
b. Encrypts faster than AES
c. Simpler key management
d. Unlimited key sharing
Answer: a. Uses smaller key sizes with equal securitydarktrace
Which encryption method applies three rounds of DES?
a. AES
b. Triple DES
c. Blowfish
d. MD4
Answer: b. Triple DESdarktrace
One disadvantage of 3DES compared to AES is:
a. Reduced key size
b. Increased speed
c. Slower performance
d. Weak encryption
Answer: c. Slower performancedarktrace
In symmetric encryption, both encryption and decryption use:
a. Different keys
b. The same key
c. Session identifiers
d. Random salts
Answer: b. The same keysatoricyber+1
What is ciphertext?
a. Encrypted data output
b. Decrypted data
c. Plaintext message
d. Key management tool
Answer: a. Encrypted data outputdarktrace
Which encryption mode encrypts data as a continuous stream?
a. Block cipher
b. Stream cipher
c. Asymmetric cipher
d. Hybrid cipher
Answer: b. Stream cipherdarktrace
What must users provide to decrypt storage-encrypted data?
a. License key
b. Recovery key or passphrase
c. Session ID
d. Random token
Answer: b. Recovery key or passphrasehhs
AES operates by dividing plaintext into:
a. Bytes
b. Blocks
c. Streams
d. Packets
Answer: b. Blocksdarktrace
Full disk encryption typically secures the:
a. Network adapter
b. Boot sector
c. Wi-Fi chip
d. BIOS
Answer: b. Boot sectorhhs
Which layer is most relevant to storage encryption?
a. Application layer
b. Physical layer
c. Data storage layer
d. Transport layer
Answer: c. Data storage layercpl.thalesgroup+1
What is the first step in encryption?
a. Compression
b. Data conversion from plaintext to ciphertext
c. Randomization
d. Storage allocation
Answer: b. Data conversion from plaintext to ciphertextsatoricyber+1
What is one risk if the encryption key is lost?
a. Slower CPU
b. Permanent data inaccessibility
c. Faster network performance
d. Reduced data redundancy
Answer: b. Permanent data inaccessibilitycpl.thalesgroup+1
Transparent Data Encryption (TDE) primarily protects:
a. Data backups
b. Databases at rest
c. Network traffic
d. User passwords
Answer: b. Databases at restsatoricyber
Hashing differs from encryption because it:
a. Is irreversible
b. Uses symmetric keys
c. Uses larger key sizes
d. Protects files only
Answer: a. Is irreversiblesatoricyber+1
One key limitation of storage encryption is:
a. It only encrypts metadata
b. It protects data but not credentials
c. It increases CPU usage
d. It never requires authentication
Answer: c. It increases CPU usagehhs
Which cryptographic function converts plaintext to ciphertext using a key?
a. Encryption algorithm
b. Hash function
c. Compression routine
d. Tokenizer
Answer: a. Encryption algorithmsatoricyber+1
AES replaced which earlier encryption standard?
a. RSA
b. 3DES
c. DES
d. SHA-2
Answer: c. DESdarktrace
Which encryption model provides the best protection for mobile storage devices?
a. SSL
b. Full disk encryption
c. File access control
d. VPN
Answer: b. Full disk encryptionhhs
Which encryption algorithm was used before AES for government data?
a. DES
b. RSA
c. MD5
d. Blowfish
Answer: a. DESdarktrace
AES is categorized as what type of encryption?
a. Symmetric block cipher
b. Asymmetric cipher
c. Stream cipher
d. Hybrid algorithm
Answer: a. Symmetric block cipherdarktrace
In storage encryption, the encryption key should be stored:
a. On the same unprotected disk
b. In a secure hardware module
c. In plaintext within the OS
d. Inside encrypted data
Answer: b. In a secure hardware modulehhs
What happens if a device with encrypted storage is lost?
a. Data remains unreadable
b. Data auto-decrypts
c. Data is backed up online
d. Data becomes public
Answer: a. Data remains unreadablecpl.thalesgroup+1
What is the primary difference between encryption and encoding?
a. Encoding is used for data transmission, encryption for security
b. Encryption is reversible, encoding is not
c. Encoding secures data completely
d. Encryption is just data formatting
Answer: a. Encoding is used for data transmission, encryption for securitysatoricyber
When does encryption at rest occur?
a. While data is being transmitted
b. When data is idle on storage
c. During RAM processing
d. After decryption
Answer: b. When data is idle on storagesatoricyber
File/folder encryption is most suitable for:
a. Partial encryption of specific data sets
b. Encrypting the whole OS
c. Streaming data
d. Network protection
Answer: a. Partial encryption of specific data setshhs
Which encryption algorithm is widely used in wireless security?
a. AES
b. Blowfish
c. ECC
d. RSA
Answer: a. AESdarktrace
What determines encryption strength?
a. Algorithm only
b. Key length
c. Hash rate
d. Storage speed
Answer: b. Key lengthdarktrace
Hardware-based Full Disk Encryption improves performance by:
a. Offloading encryption to the drive hardware
b. Using smaller keys
c. Disabling keys
d. Compressing data
Answer: a. Offloading encryption to the drive hardwarehhs
What does “Transparent” in TDE mean?
a. Users need not manually encrypt or decrypt
b. Keys are exposed
c. Data stays decrypted permanently
d. The process is invisible to end users but active
Answer: d. The process is invisible to end users but activesatoricyber
What is one benefit of encrypting backups?
a. Faster restoration
b. Resilience against theft
c. Time zone synchronization
d. File size reduction
Answer: b. Resilience against thefthhs+1
Volume encryption encrypts:
a. A specific disk partition
b. Entire OS boot files
c. RAM contents
d. CPU registers
Answer: a. A specific disk partitionhhs
Which encryption concept ensures only authorized access to storage data?
a. Authentication
b. Access control
c. Encryption key mechanism
d. Tokenization
Answer: c. Encryption key mechanismhhs+1

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