What is the purpose of renewing a digital certificate before it expires?

To change the certificate's public key to a new algorithm

To increase the encryption strength of all data transmitted

To reduce the certificate's validity period

To ensure the certificate remains valid and trusted by clients

An administrator needs to create a self-signed certificate for a development server. The certificate will be used for TLS on a web server. Which command should the administrator use to generate both the private key and the certificate?

openssl ca -in req.csr -out cert.pem

openssl x509 -signkey key.pem -in req.csr -out cert.pem

openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes

openssl genrsa -out key.pem 2048

A security administrator needs to encrypt a large database dump for storage. The administrator wants the fastest encryption method and will store the key securely. Which approach should the administrator choose?

Use a hash function like SHA-256 to encrypt the file.

Use a symmetric cipher like AES-256 with a securely stored key.

Use a digital signature to encrypt the file.

Use an asymmetric cipher like RSA-2048 to encrypt the file directly.

CompTIALinux+

Domain 3Objective 5

Cryptography XK0-006 Practice Questions (Page 2)

Part of the Security domain, which accounts for 18% of the XK0-006 exam. CompTIA does not publish an official question count, but from its 90-minute exam (~35–60 total, ~6–11 in this domain), expect 1–2 from this objective — we provide 35 practice questions to prepare you well beyond it. (estimate)

35questions here

7free pages

9concepts

18%of the exam

Questions 6–10

6foundation · easy
What is the purpose of renewing a digital certificate before it expires?
Select an answer first
7application · medium
An administrator needs to create a self-signed certificate for a development server. The certificate will be used for TLS on a web server. Which command should the administrator use to generate both the private key and the certificate?
Select an answer first
8foundation · easy
Which key is used to create a digital signature?
Select an answer first
9foundation · easy
Which command is commonly used to generate a new private key and certificate signing request (CSR) on a Linux system?
Select an answer first
10application · medium
A security administrator needs to encrypt a large database dump for storage. The administrator wants the fastest encryption method and will store the key securely. Which approach should the administrator choose?
Select an answer first

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Cryptography XK0-006 Practice Questions (Page 2)

Questions 6–10

What is the purpose of renewing a digital certificate before it expires?

An administrator needs to create a self-signed certificate for a development server. The certificate will be used for TLS on a web server. Which command should the administrator use to generate both the private key and the certificate?

Which key is used to create a digital signature?

Which command is commonly used to generate a new private key and certificate signing request (CSR) on a Linux system?

A security administrator needs to encrypt a large database dump for storage. The administrator wants the fastest encryption method and will store the key securely. Which approach should the administrator choose?

Keep studying — Security