Two independent companies, Alpha Corp and Beta Ltd, each run their own private PKI with a single root CA. They now need to trust each other's certificates for a joint project. The security teams want to establish trust without creating a new shared root CA. Which approach should they use?

Exchange all user private keys so that each company can decrypt the other's traffic.

Configure each company's clients to ignore certificate validation errors for the other company's servers.

Publish each company's root CA certificate in a public certificate repository.

Cross-certify their root CAs by having each CA issue a certificate for the other's root CA.

What is a common use of asymmetric encryption?

Encrypting large files for storage

Securely exchanging a symmetric key

LPI Security Essentials

Domain 2Objective 1

022.1 Cryptography and Public Key Infrastructure (weight: 3) SECURITY-ESSENTIALS Practice Questions (Page 6)

Part of the 022 Encryption domain, which makes up ~20% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 60-minute exam (~25–40 total, ~5–8 in this domain), expect 1–2 from this objective — we provide 31 practice questions to prepare you well beyond it. (estimate)

31questions here

7free pages

10concepts

Questions 26–30

26foundation · easy
What key is used to create a digital signature?
Select an answer first
27application · medium
Two independent companies, Alpha Corp and Beta Ltd, each run their own private PKI with a single root CA. They now need to trust each other's certificates for a joint project. The security teams want to establish trust without creating a new shared root CA. Which approach should they use?
Select an answer first
28foundation · easy
Which protocol allows a client to check the revocation status of a certificate in real time?
Select an answer first
29foundation · easy
What is a common use of asymmetric encryption?
Select an answer first
30foundation · easy
Which of the following is a common hash function?
Select an answer first

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022.1 Cryptography and Public Key Infrastructure (weight: 3) SECURITY-ESSENTIALS Practice Questions (Page 6)

Questions 26–30

What key is used to create a digital signature?

Two independent companies, Alpha Corp and Beta Ltd, each run their own private PKI with a single root CA. They now need to trust each other's certificates for a joint project. The security teams want to establish trust without creating a new shared root CA. Which approach should they use?

Which protocol allows a client to check the revocation status of a certificate in real time?

What is a common use of asymmetric encryption?

Which of the following is a common hash function?

Keep studying — 022 Encryption