Backup and Recovery CV0-004 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which method is commonly used to verify that a restored file exactly matches the original data?

   • AReviewing the file timestamp
   • BComparing hash values
   • CChecking the file extension
   • DComparing file sizes
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2. 17application · medium

   A financial services company must back up sensitive customer data to a cloud storage provider. The compliance team requires that the data be protected from unauthorized access during transmission and while at rest. The backup administrator also needs to verify that the data has not been tampered with. Which combination of features should the administrator configure?

   • ATLS for transmission and AES-256 encryption at rest only.
   • BSHA-256 hashing for transmission and AES-256 encryption at rest only.
   • CAES-256 encryption for transmission and TLS for encryption at rest.
   • DTLS for transmission, AES-256 encryption at rest, and SHA-256 hashing for integrity verification.
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4. 18expert · hard

   A company is required to retain backup data for 7 years for compliance. The backup administrator is considering using encryption to protect the data. The compliance team requires that the data be recoverable for the entire retention period. Which encryption strategy should the administrator use?

   • AUse a static encryption key and store it securely with the backup data.
   • BUse a key management service with automatic key rotation and ensure that the current key can decrypt all historical backups.
   • CUse no encryption to avoid the risk of key loss.
   • DUse a different encryption key for each backup and store the keys in a separate, secure location.
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5. 19foundation · easy

   How does encryption protect data integrity during backup?

   • AIt compresses data to reduce size
   • BIt prevents unauthorized modification of data
   • CIt detects errors in data
   • DIt deduplicates data
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6. 20expert · hard

   A company uses a backup service that performs data deduplication and then encrypts the deduplicated data. The backup administrator is concerned that a hash collision could cause data corruption. The administrator wants to implement a verification method that is computationally efficient and provides a very low probability of undetected corruption. Which approach should the administrator use?

   • ARely on the encryption algorithm to detect corruption.
   • BUse a cryptographic hash function like SHA-256 for integrity verification of the deduplicated data.
   • CDisable data deduplication to eliminate the risk of hash collisions.
   • DUse a non-cryptographic checksum like CRC-32 for integrity verification of the deduplicated data.
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