A user's browser shows a warning that the certificate for a banking website is not trusted. The user checks the certificate details and sees it was issued by an unknown organization. What is the most likely reason for this warning?

The user's computer clock is set to the wrong date.

The certificate was not issued by a certificate authority (CA) that the browser trusts.

The website is using HTTP instead of HTTPS.

What is a primary weakness of symmetric encryption?

It cannot be used for data at rest

It requires secure distribution of the shared key

It uses different keys for encryption and decryption

It is too slow for large data volumes

What is the primary purpose of a VPN?

To compress data for faster transmission

To block all incoming network traffic

To provide a public IP address for servers

To create a secure, encrypted tunnel over a public network

What is the fundamental difference between symmetric and asymmetric encryption?

Symmetric is used for data at rest; asymmetric is used for data in transit

Symmetric uses one key for both encryption and decryption; asymmetric uses a pair of keys

Symmetric is faster but less secure; asymmetric is slower but always more secure

Symmetric uses two keys; asymmetric uses one key

LPI Security Essentials

Domain 5Objective 2

025.2 Information Confidentiality and Secure Communication (weight: 2) SECURITY-ESSENTIALS Practice Questions (Page 6)

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 26–30

26application · medium
A user's browser shows a warning that the certificate for a banking website is not trusted. The user checks the certificate details and sees it was issued by an unknown organization. What is the most likely reason for this warning?
Select an answer first
27foundation · easy
What is a primary weakness of symmetric encryption?
Select an answer first
28foundation · easy
What is the primary purpose of a VPN?
Select an answer first
29foundation · easy
What is the fundamental difference between symmetric and asymmetric encryption?
Select an answer first
30application · easy
A system administrator needs to remotely manage a Linux server over the internet. The administrator wants to ensure the management session is encrypted and the server is authenticated. Which protocol should be used?
Select an answer first

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