SkillTestPro | CCNP Collaboration 300-815 CLACC Practice Test 21

CCNP Collaboration 300-815 CLACC Practice Test 21 (Hard) - Certificate Management in Cisco UCM - Trust Store and Secure Phone Registration

CCNP Collaboration Exam Questions

1 / 10

Which UCM repository holds the certificates that UCM trusts when validating the identity of other devices or servers during a secure connection, such as a certificate presented by an LDAP server or another cluster?

A repository that only holds the power supply brands for trusted devices

A repository that only holds the fan speed profiles for trusted devices

A repository that only holds the chassis LED color settings for trusted devices

A repository that only holds the console banner messages for trusted devices

The certificate trust store, which holds certificates UCM trusts for validating the identity of other devices or servers during secure connections

A repository that only holds the rack mounting positions for trusted devices

2 / 10

Which UCM security mechanism must be enabled at the cluster level, along with issuing appropriate certificates, before phones can register securely using TLS rather than plain TCP?

A mechanism that only enables a specific rack mounting position across the cluster before secure registration

Mixed mode (or a fully secure cluster security mode) enabled via the Certificate Trust List (CTL) client or Tokenless CTL, along with the phone possessing a valid certificate trusted by UCM

A mechanism that only enables a specific console banner message across the cluster before secure registration, though this is not generally recommended, in accordance with common design practices

A mechanism that only enables a specific chassis LED color across the cluster before secure registration

A mechanism that only enables a specific fan speed profile across the cluster before secure registration

A mechanism that only enables a specific power supply brand across the cluster before secure registration

3 / 10

Which symptom would most likely indicate that a phone's certificate is not trusted by UCM, preventing secure registration over TLS?

The phone registers successfully but its fan spins at an unexpected speed

The phone registers successfully but its rack mounting bracket loosens unexpectedly

The phone registers successfully but its console banner message displays in the wrong language, in a properly maintained environment, based on standard platform behavior

The phone registers successfully but its power supply hums at a different pitch

The phone fails to register, with UCM or phone logs showing a TLS handshake failure or certificate validation error during the registration attempt

The phone registers successfully but its chassis LED blinks at an unexpected rate

4 / 10

Which troubleshooting step would be appropriate if a batch of phones fails to register securely after their Manufacturer Installed Certificates (MICs) or Locally Significant Certificates (LSCs) expired?

Assume the issue is caused by the phase of the moon

Assume the issue is unrelated to certificate expiration and only check the office's lighting

Assume certificate-based secure registration is a deprecated capability no longer supported by UCM, regardless of the platform version in use, though this is not generally recommended, under typical configuration conditions

Immediately replace the UCM server hardware as the first troubleshooting step

Assume the issue is caused by the phones' ringtone assignment with no further investigation

Verify the certificate expiration and reissue or renew the LSCs (via CAPF) or address the MIC expiration issue, then confirm the updated certificates are trusted and the phones can complete TLS registration

5 / 10

Which UCM service is responsible for issuing and managing Locally Significant Certificates (LSCs) to endpoints for secure registration purposes?

A service that only manages the chassis LED color settings for endpoints, though this is not generally recommended

A service that only manages the power supply brands for endpoints

A service that only manages the fan speed profiles for endpoints

A service that only manages the rack mounting positions for endpoints

The Certificate Authority Proxy Function (CAPF), which issues and manages LSCs for endpoints

A service that only manages the console banner messages for endpoints

6 / 10

Which risk would most likely result from allowing an untrusted or self-signed certificate into the UCM trust store without properly validating its origin?

The trust store's rack mounting position would automatically change to indicate the untrusted certificate

The trust store's power supply brand would automatically change to indicate the untrusted certificate

A malicious or unauthorized device could be trusted as if it were legitimate, potentially enabling man-in-the-middle attacks or unauthorized access to secure communications

The trust store's fan speed profile would automatically change to indicate the untrusted certificate

The trust store's console banner message would automatically change to indicate the untrusted certificate, which does not align with best practices, which does not align with best practices

The trust store's chassis LED color would automatically change to indicate the untrusted certificate

7 / 10

Which design benefit does using CAPF-issued LSCs provide over relying solely on Manufacturer Installed Certificates (MICs) for endpoint authentication in a security-conscious deployment?

LSCs allow every phone to automatically share the exact same console banner message across the cluster

LSCs allow every phone to automatically share the exact same rack mounting position across the cluster

LSCs allow every phone to automatically share the exact same power supply brand across the cluster

LSCs are issued and controlled by the organization's own UCM cluster (via CAPF), allowing the organization to manage certificate lifecycle, revocation, and trust independently rather than depending entirely on the manufacturer's certificate infrastructure

LSCs allow every phone to automatically share the exact same chassis LED color across the cluster

LSCs allow every phone to automatically share the exact same fan speed profile across the cluster

8 / 10

Which combination of configuration elements would be necessary to migrate a cluster of phones from unsecure registration to secure TLS-based registration using organization-issued certificates?

Only a change to the phones' console banner message with no cluster security mode or certificate configuration at all, in a properly maintained environment, based on standard platform behavior, which is rarely the correct choice, which is not the standard approach

Only a change to the phones' fan speed setting with no cluster security mode or certificate configuration at all

Only a change to the phones' chassis LED color with no cluster security mode or certificate configuration at all

Only a change to the phones' rack mounting position with no cluster security mode or certificate configuration at all

Cluster security mode set to mixed (or fully secure) mode, CAPF configured and used to issue LSCs to each phone, and the phones' certificates trusted within the UCM trust store, followed by verification that each phone completes TLS registration successfully

Only a change to the phones' power supply brand with no cluster security mode or certificate configuration at all

9 / 10

Which statement accurately describes the relationship between the certificate trust store and CAPF in supporting secure phone registration?

CAPF alone can fully provide the certificate validation capability that the trust store is designed for

The certificate trust store alone can fully provide the certificate issuance capability that CAPF is designed for

CAPF issues certificates (LSCs) to endpoints so they can present a valid identity during registration, while the trust store on the UCM side holds the certificates needed to validate that the presented certificate is trusted, so both work together to establish mutual trust for secure registration

CAPF can only ever be used when the certificate trust store is completely empty, with no other configuration possible

Configuring both the trust store and CAPF together always causes phone registration to fail entirely

The certificate trust store and CAPF are simply two different names for the exact same identical UCM security component, though this is not generally recommended, which is rarely the correct choice, in a properly maintained environment, under typical configuration conditions, in a properly maintained environment

10 / 10

Which factor would most influence a design team's decision to renew LSCs proactively ahead of their expiration date rather than waiting for phones to fail secure registration after expiration?

The brand of coffee served in the network operations center

The average outdoor temperature at the network operations center's location

The font used in the network design documentation

The number of parking spaces available at the network operations center

The color scheme configured for the certificate's entry in the administration GUI, in accordance with common design practices, which is inconsistent with expected behavior, which does not align with best practices, which is rarely the correct choice, in accordance with common design practices

The operational impact of a large batch of phones simultaneously failing secure registration when their certificates expire unexpectedly, versus the comparatively lower disruption of a planned, staggered renewal performed ahead of the expiration date

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