How is a digital signature verified by the recipient?

By decrypting the message with the recipient's private key

By encrypting the message with the sender's private key

By comparing the signature to the original message

By decrypting the signature with the sender's public key and comparing it to the message hash

A company's security policy requires that a compromised encryption key be rendered unusable immediately. The key was used to encrypt data at rest. Which action is the most appropriate to take?

Delete the key and keep the encrypted data as is.

Revoke the key and re-encrypt the data with a new key.

Keep using the key but monitor for suspicious activity.

LPI Security Essentials

Domain 5Objective 2

025.2 Information Confidentiality and Secure Communication (weight: 2) SECURITY-ESSENTIALS Practice Questions (Page 5)

Part of the 025 Identity and Privacy domain, which makes up ~22% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~6–9 in this domain), expect 2–3 from this objective — we provide 40 practice questions to prepare you well beyond it. (estimate)

40questions here

8free pages

20concepts

Questions 21–25

21foundation · easy
Which encryption type is typically used to securely exchange a symmetric key over an insecure channel?
Select an answer first
22foundation · easy
How is a digital signature verified by the recipient?
Select an answer first
23foundation · easy
Which technology is commonly used to establish a VPN tunnel?
Select an answer first
24foundation · easy
Which principle of secure communication ensures that the sender of a message cannot later deny having sent it?
Select an answer first
25expert · medium
A company's security policy requires that a compromised encryption key be rendered unusable immediately. The key was used to encrypt data at rest. Which action is the most appropriate to take?
Select an answer first

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025.2 Information Confidentiality and Secure Communication (weight: 2) SECURITY-ESSENTIALS Practice Questions (Page 5)

Questions 21–25

Which encryption type is typically used to securely exchange a symmetric key over an insecure channel?

How is a digital signature verified by the recipient?

Which technology is commonly used to establish a VPN tunnel?

Which principle of secure communication ensures that the sender of a message cannot later deny having sent it?

A company's security policy requires that a compromised encryption key be rendered unusable immediately. The key was used to encrypt data at rest. Which action is the most appropriate to take?

Keep studying — 025 Identity and Privacy