A company is implementing a system where employees submit expense reports digitally. The finance department needs to be certain that the employee who submitted a report cannot later deny having submitted it, and that the report was not altered after submission. Which mechanism should be used?

A hash of the report stored in a database

Digital signature from the employee

Encryption of the report with the finance department's public key

What is a primary strength of symmetric encryption?

It eliminates the need for key management

It uses a public key for encryption

It is computationally faster than asymmetric encryption

A small company needs to encrypt files exchanged between two branch offices over the internet. They want the fastest possible encryption/decryption performance on their commodity hardware and are willing to share a single secret key out-of-band. Which approach best meets their requirement?

Use AES-256 with a pre-shared key distributed via a secure courier.

Use a hash function like SHA-256 to scramble the file contents before transfer.

Use RSA-2048 to encrypt each file directly with the recipient's public key.

Use TLS with a self-signed certificate on both endpoints.

LPI Security Essentials

Domain 5Objective 2

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

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 6–10

6application · easy
A journalist needs to send a sensitive message to an editor without drawing attention to the fact that a message is being sent. The message must be hidden within an innocuous image file. Which technique should the journalist use?
Select an answer first
7expert · medium
A company is implementing a system where employees submit expense reports digitally. The finance department needs to be certain that the employee who submitted a report cannot later deny having submitted it, and that the report was not altered after submission. Which mechanism should be used?
Select an answer first
8foundation · easy
What is a primary strength of symmetric encryption?
Select an answer first
9application · medium
A small company needs to encrypt files exchanged between two branch offices over the internet. They want the fastest possible encryption/decryption performance on their commodity hardware and are willing to share a single secret key out-of-band. Which approach best meets their requirement?
Select an answer first
10application · medium
A network engineer needs to secure communication between two branch offices that are connected via the public internet. The requirement is to encrypt all IP traffic between the two sites at the network layer, without changing the applications. Which technology should be used?
Select an answer first

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

Questions 6–10

A journalist needs to send a sensitive message to an editor without drawing attention to the fact that a message is being sent. The message must be hidden within an innocuous image file. Which technique should the journalist use?

A company is implementing a system where employees submit expense reports digitally. The finance department needs to be certain that the employee who submitted a report cannot later deny having submitted it, and that the report was not altered after submission. Which mechanism should be used?

What is a primary strength of symmetric encryption?

A small company needs to encrypt files exchanged between two branch offices over the internet. They want the fastest possible encryption/decryption performance on their commodity hardware and are willing to share a single secret key out-of-band. Which approach best meets their requirement?

A network engineer needs to secure communication between two branch offices that are connected via the public internet. The requirement is to encrypt all IP traffic between the two sites at the network layer, without changing the applications. Which technology should be used?

Keep studying — 025 Identity and Privacy