Implementing Cisco IP Telephony and Video Part 2 (CIPTV2)

Here you have the best Cisco 300-075 practice exam questions

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This questions were last updated on December 12, 2024

Question 1 of 89

Refer to the exhibit.

Which statement is true?

Endpoints can make calls to unknown IP addresses without the VCS querying any neighbors.

If the VCS receives a call to an unknown IP address, it queries its neighbors for the remote address and if permitted, it routes the call through the neighbor.

Endpoints that are registered directly to the VCS can call only an IP address of a system that is also registered directly to that VCS.

Dialing by IP address is not supported on VCS.

Correct Answer: A

The configuration settings indicate that the Call Loop Detection Mode is enabled and the Call Routed Mode is set to 'Always,' which means that the VCS will always route the call signaling. Additionally, the setting for Call Services CallsToUnknownIPAddresses is set to 'Direct,' which allows endpoints to make calls to unknown IP addresses without the VCS querying any neighbors. Therefore, endpoints can indeed make calls to unknown IP addresses directly.

Question 2 of 89

Which three statements about configuring an encrypted trunk between Cisco TelePresence Video Communication Server and Cisco Unified Communications

Manager are true? (Choose three.)

The root CA of the VCS server certificate must be loaded in Cisco Unified Communications Manager.

A SIP trunk security profile must be configured with Incoming Transport Type set to TCP+UDP.

The Cisco Unified Communications Manager trunk configuration must have the destination port set to 5061.

A SIP trunk security profile must be configured with Device Security Mode set to TLS.

A SIP trunk security profile must be configured with the X.509 Subject Name from the VCS certificate.

The Cisco Unified Communications Manager zone configured in VCS must have SIP authentication trust mode set to On.

The Cisco Unified Communications Manager zone configured in VCS must have TLS verify mode set to Off.

Correct Answer: A, C, D

To configure an encrypted trunk between Cisco TelePresence Video Communication Server (VCS) and Cisco Unified Communications Manager (CUCM), the root CA of the VCS server certificate must be loaded in CUCM. This ensures that CUCM can validate the server certificate presented by VCS. The CUCM trunk configuration must have the destination port set to 5061 as this is the standard port for SIP over TLS. Additionally, a SIP trunk security profile must be configured with the Device Security Mode set to TLS to ensure that the communication over the trunk is encrypted.

Question 3 of 89

Which two options should be used to create a secure traversal zone between the Expressway-C and Expressway-E? (Choose two.)

Expressway-C and Expressway-E must trust each other's server certificate.

One Cisco Unified Communications traversal zone for H.323 and SIP connections.

A separate pair of traversal zones must be configured if an H.323 connection is required and Interworking is disabled.

Enable username and password authentication verification on Expressway-E.

Create a set of username and password on each of the Expressway-C and Expressway-E to authenticate the neighboring peer.

Correct Answer: A, C

To create a secure traversal zone between Expressway-C and Expressway-E, Expressway-C and Expressway-E must trust each other's server certificates to ensure mutual authentication and encryption. Additionally, a separate pair of traversal zones must be configured if an H.323 connection is required and Interworking is disabled, to guarantee proper handling of H.323 traffic and maintaining the security of the traversal mechanism.

Question 4 of 89

What is the standard Layer 3 DSCP media packet value that should be set for Cisco TelePresence endpoints?

CS3 (24)

EF (46)

AF41 (34)

CS4 (32)

Correct Answer: C

For Cisco TelePresence endpoints, the standard Layer 3 DSCP value typically set for media packets, which includes video traffic, is AF41 (34). This designation is used to ensure high priority is given to video traffic, providing proper Quality of Service (QoS) to maintain the video quality. Other options like CS4 are generally used for signaling, not media packets.

Question 5 of 89

Which three commands are necessary to override the default CoS to DSCP mapping on interface Fastethernet0/1? (Choose three.)

mls qos map cos-dscp 0 10 18 26 34 46 48 56

mls qos map dscp-cos 8 10 to 2

mls qos

interface Fastethernet0/1 mls qos trust cos

interface Fastethernet0/1 mls qos cos 1

interface Fastethernet0/2 mls qos cos 1

Correct Answer: A, C, D

To override the default CoS to DSCP mapping on an interface, first, you need to globally enable the QoS functionality using the 'mls qos' command. Then, you define the CoS-to-DSCP map with 'mls qos map cos-dscp 0 10 18 26 34 46 48 56', which specifies how CoS values map to DSCP values. Finally, you configure the specific interface to trust the CoS values using 'interface Fastethernet0/1 mls qos trust cos'. This combination of commands effectively overrides the default CoS to DSCP mapping.