025.2 Information Confidentiality and Secure Communication (weight: 2) SECURITY-ESSENTIALS Practice Questions (Page 7)

Questions 31–35

1. 31foundation · easy

   What is the primary goal of confidentiality in information security?

   • AEnsuring that systems are available when needed
   • BEnsuring that data is accessible only to authorized individuals or systems
   • CEnsuring that data has not been altered or tampered with
   • DEnsuring that a user cannot deny having performed an action
   Reveal Solution Discussion Select an answer first
2. 32foundation · easy

   Which security goal is directly violated if an attacker reads a confidential email message without authorization?

   • AAvailability
   • BConfidentiality
   • CIntegrity
   • DNon-repudiation
   Reveal Solution Discussion Select an answer first
4. 33foundation · easy

   How does hashing differ from encryption?

   • AHashing is reversible; encryption is not
   • BHashing is used for confidentiality; encryption is used for integrity
   • CHashing uses keys; encryption does not
   • DHashing produces a fixed-size output; encryption output size varies with input
   Reveal Solution Discussion Select an answer first
5. 34foundation · easy

   What does key rotation refer to in key management?

   • ASharing the key with all users
   • BReplacing an old key with a new one periodically
   • CDeleting all old keys
   • DEncrypting the key with another key
   Reveal Solution Discussion Select an answer first
6. 35foundation · easy

   In secure communication, what does 'integrity' primarily ensure?

   • AThe data is encrypted and unreadable to unauthorized parties
   • BThe data has not been modified or corrupted during transmission
   • CThe sender's identity is verified
   • DThe sender cannot deny sending the data
   Reveal Solution Discussion Select an answer first