Cisco Certified Internetwork Expert (CCIE) Practice Test

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Study for the Cisco Certified Internetwork Expert Exam. Prepare with flashcards, multiple-choice questions, and detailed explanations. Equip yourself with the skills needed to become a top-tier network expert. Get ready for your exam!

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Which effect of the crypto pki authenticate command is true?

It sets the certificate enrollment method
It retrieves and authenticates a CA certificate
It displays the current CA certificate
It configures a CA trustpoint

The correct answer is: It retrieves and authenticates a CA certificate

The crypto pki authenticate command plays a crucial role in the Public Key Infrastructure (PKI) within Cisco networking. By executing this command, the device retrieves a certificate from a Certificate Authority (CA) and verifies its authenticity. This process involves checking the certificate's signature against the public key of the CA to ensure that the certificate has not been tampered with and is indeed issued by a trusted authority. In the context of network security, this command is essential for establishing trust between devices and ensuring secure communications. The ability to authenticate a CA certificate is foundational to establishing a secure environment that supports various protocols, such as SSL/TLS, which rely on these certificates for secure connections. The other options relate to different functions within the PKI framework. For instance, setting the certificate enrollment method refers to configuring how a device will request and obtain certificates, while displaying the current CA certificate pertains to viewing the existing certificate information. Configuring a CA trustpoint involves associating a set of configurations and a trust anchor for the certificate, enabling the device to recognize and trust the CA. Each of these functions serves its unique purpose within the broader PKI system but does not describe the specific action executed by the crypto pki authenticate command.