300-820 Dumps To Pass CCNP Collaboration Exam in One Day (Updated 157 Questions)
300-820 Exam Brain Dumps - Study Notes and Theory
Cisco 300-820 exam comprises of 60-70 questions, and candidates have 90 minutes to complete the test. 300-820 exam is available in Pearson VUE testing centers worldwide, and candidates can also take the exam online. 300-820 exam tests the candidate’s knowledge of various Cisco Collaboration Cloud and Edge solutions, such as Cisco Webex Teams, Cisco Expressway, and Cisco Unified Communications Manager (CUCM).
Cisco 300-820 exam is an essential certification for those who want to demonstrate their expertise in implementing Cisco Collaboration Cloud and Edge Solutions. It provides candidates with the knowledge and skills required to configure, deploy, and troubleshoot these solutions. By passing 300-820 exam, candidates can earn the Cisco Certified Specialist - Collaboration Cloud and Edge Implementation certification and advance their careers in the field of collaboration and communication technologies.
NEW QUESTION # 91
Refer to the exhibit.
While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?
- A. down Cisco Unified Communications Manager server
- B. service discovery issues
- C. incorrect login credentials
- D. XMPP bind failures
Answer: D
NEW QUESTION # 92
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
- A. ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
- B. ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
- C. ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
- D. ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION # 93
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)
- A. The cascading traffic between VMN must bypass the firewall.
- B. Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.
- C. When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.
- D. A VMN can terminate a media connection while operating in maintenance mode.
- E. When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.
Answer: B,C
Explanation:
In Unified CM, each SIP trunk can support up to 16 Video Mesh destinations (IP addresses).
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/videomesh/cmgt_ b_webex-video-mesh-deployment-guide/cmgt_b_hybrid-media-deployment- guide_chapter_011.html
NEW QUESTION # 94
Which complication does a NAT introduce in SDP for a SIP call?
- A. The IP address specified in the connection data field may be an unrouteable internal address.
- B. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
- C. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
- D. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
Answer: A
Explanation:
The problem is that if NAT enabled, some firewalls doesn't write the translated address into the SIP Signalling (fortinet for example has VIP feature that make it works).
NEW QUESTION # 95
Refer to the exhibit. Which inbound connection should an administrator configure on the outside firewall?
- A. SIP: TCP 5061
- B. HTTPS (tunneled over SSH between C and E): TCP 2222
- C. XMPP: TCP 5222
- D. Media: UDP 36000 to 36011
Answer: C
Explanation:
SIP UDP: 5060
SIP TCP: 5060
SIP TLS: 5061
XMPP TCP: 5222
RTP/RTCP: 36000-59999
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-
5/Cisco-Expressway-IP-Port-Usage-for-Firewall-Traversal-Deployment-Guide-X12-5.pdf
NEW QUESTION # 96
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
- A. Best Effort
- B. Force Encrypted
- C. Off
- D. Auto
Answer: D
Explanation:
Auto - no specific media encryption policy is applied by the Expressway. Media encryption is purely dependent on the target system/endpoint requests. This is the default behavior and is equivalent to how the Expressway operated before this feature was introduced.
NEW QUESTION # 97
Which two licenses are required for the B2B feature to work? (Choose two.)
- A. Advanced Networking
- B. Device Provisioning
- C. Rich Media Sessions
- D. Traversal Server
- E. TURN Relays
Answer: C,D
NEW QUESTION # 98
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
- A. ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
- B. ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
- C. ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
- D. ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
Answer: A
NEW QUESTION # 99
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
- A. version
- B. connection
- C. bandwidth
- D. name
Answer: D
NEW QUESTION # 100
Refer to the exhibit.
In an environment SIP devices are registered to CUCM and H.323 devices to VCS. What would be required to enable these calls to setup correctly?
- A. Disable SIP in the external zone.
- B. Create a presearch transform.
- C. Change the interworking mode to On.
- D. Change the domain of SIP endpoint A to cisco.com.
Answer: C
NEW QUESTION # 101
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
- A. TURN
- B. RTP
- C. SNMP
- D. STUN
Answer: D
NEW QUESTION # 102
Refer to the exhibit.
Which inbound connection should an administrator configure on the outside firewall?
- A. Media: UDP 36000 to 36011
- B. HTTPS (tunneled over SSH between C and E): TCP 2222
- C. SIP TCP 5061
- D. XMPP TCP 5222
Answer: A
NEW QUESTION # 103
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?
- A. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
- B. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
- C. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
- D. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
Answer: A
NEW QUESTION # 104
Refer to the exhibit.
Cisco Unified Communications Manager routes the call via the Webex Meetings route list and route group to the Video Mesh cluster Node#1 in the Video Mesh cluster is hosting the meeting and has reached full capacity, but other nodes in the cluster still have spare capacity.
What happens to the participant's call?
- A. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
- B. The call is queued.
- C. The call fails.
- D. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
Answer: D
NEW QUESTION # 105
Refer to the exhibit. Mobile and remote access is being added to an existing B2B deployment and is failing.
When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?
- A. The listening port on the Expressway-C for SIP TLS must be changed to a value other than
5061 - B. The listening port on the Expressway-C for SIP TCP must be changed to a value other than
5060 - C. The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP
- D. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
Answer: D
Explanation:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKUCC-2801.pdf
NEW QUESTION # 106
Which step is required when configuring cloud and hybrid deployments for Cisco Jabber?
- A. Add the Jabber user to Expressway-C.
- B. Add the Jabber user to Cisco Unity Connection.
- C. Add the Jabber user to Expressway-E.
- D. Add Jabber Users to the Cisco Webex Administration Tool.
Answer: D
NEW QUESTION # 107
Refer to the exhibit. Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)
- A. Media: UDP 36012 to 59999
- B. XMPP: TCP 7400
- C. SIP: TCP 7001
- D. HTTPS: TCP 8443
- E. SIP TCP 5061
Answer: B,C
Explanation:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-
5/Cisco-Expressway-IP-Port-Usage-for-The internal firewall must allow the following outbound connections from the Expressway-C to the Expressway-E:
SIP: TCP 7001
Traversal media: UDP 2776 to 2777 (or 36000 to 36011 for large
VM/appliance)
XMPP: TCP 7400
HTTPS (tunneled over SSH between C and E): TCP 2222
NEW QUESTION # 108
When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?
- A. E.164
- B. URI dialing
- C. IP dialing
- D. DN dialing
Answer: B
NEW QUESTION # 109
Cisco Expressways are being deployed for Mobile and Remote Access. The Expressway-E internal interface (LAN1) IP is 192.168.100.10/24, and the external interface (LAN2) IP is
172.16.100.10/24.
The Expressway-C IP is 192.168.20.10/24. The default gateway for each subnet is the first useable address. How must the Expressway-E be configured to allow proper routing to the internal and external networks?
- A. IPv4 gateway: 172.16.100.1, and a static route for the 192.168.20.0/24 subnet using LAN1
- B. IPv4 gateway: 192.168.100.1, and a static route for the 192.168.20.0/24 subnet using LAN1
- C. IPv4 gateway: 192.168.100.1, and a static route for the 172.16.100.0/24 subnet using LAN2
- D. IPv4 gateway: 172.16.100.1, and a static route for the 192.168.100.0/24 subnet using LAN1
Answer: A
NEW QUESTION # 110
An engineer is supporting an existing Cisco Collaboration deployment that has internal and external home users using the solution without VPN. Business usage also includes B2B calling for voice and video. Suddenly the engineer receives a report that one of the home office users cannot use the Cisco Jabber client, and shortly after, a few more reports come in for the same error. What must the engineer check first to resolve this issue?
- A. alarms on the Cisco Expressways
- B. client logs of the users
- C. alarms on the Cisco UCM Cluster
- D. real-time monitoring toll logs for problems
Answer: A
NEW QUESTION # 111
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