試験高合格率保証2023年11月03日 300-820試験問題と正確な回答！
テストエンジン練習問題300-820有効最新の問題集
シスコ300-820認定試験は、ITプロフェッショナルがシスココラボレーションクラウドおよびエッジソリューションを実装するスキルと知識を検証するための優れた機会です。この認定は、協働ソリューションの分野での最新技術とベストプラクティスについて包括的な理解を提供します。この認定は、世界的に認知され、この分野でキャリアを進めたいITプロフェッショナルにとって貴重な資格です。
質問 # 79
In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?
- A. Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
- B. Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P
- C. Cisco Expressway-E and endpoints outside the enterprise
- D. Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise
正解：B
質問 # 80
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Cisco Unified CM is always used for meeting capabilities.
- B. Cisco Webex Meeting Center is always used for meeting capabilities.
- C. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- D. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
正解：A
質問 # 81
An administrator installs a new webserver (server1.example.com - 10.1.1.90) for storing Cisco Jabber update files to the network, but all Mobile and Remote Access registered clients still run the old Jabber software version, and the update fails. Which configuration task on an Expressway server solves the Jabber software update issue?
- A. Add a rule with the server IP address 10.1.1.90 in the URL to the inbound HTTP allow list because server names and FQDNs are not supported.
- B. Run an IM and Presence server discovery process on Expressway-C to add the new web server to the inbound HTTP allow list automatically.
- C. Add a rule with the URL http://server1.example.com:80/ to the inbound HTTP allow list manually to allow access to the new web server.
- D. Add a rule with the URL http://server1.example.com:80/ to the outbound HTTP allow list manually to allow pushing the new software to the clients.
正解：C
質問 # 82
Refer to the exhibit.
An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?
- A. Add a server certificate to the Expressway-C that is signed by a certificate authority.
- B. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- D. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
正解：B
質問 # 83
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. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
- 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. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
正解：B
質問 # 84
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?
- A. NAT ALG introduces jitter in the voice path.
- B. Internal endpoints cannot use addresses from the private address space.
- C. The NAT ALG cannot inspect the contents of encrypted signaling messages.
- D. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.
正解：C
解説：
A NAT ALG is similar to a firewall ALG, but a NAT ALG actually changes (maps) the addresses and ports in the signaling messages. The NAT ALG cannot inspect the contents of encrypted signaling messages.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/security.html
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-
0/basic_config/exwy_b_cisco-expressway-e-and-expressway-c-basic-configuration-deployment- guide-x14-0/exwy_m_advanced-networking-deployments.html
質問 # 85 
Refer to the exhibit. An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. Traversal Zone
- B. All
- C. Any
- D. Neighbor Zone
正解：B
質問 # 86
Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?
- A. _cisco-expwy._tls.<domain>
- B. _cisco-mra._tls.<domain>
- C. _collab-edge._tls.<domain>
- D. _cisco-uds._tcp.<domain>
正解：D
質問 # 87
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. d209d165d200d224
- C. 1
- D. 2
- E. d20d16d20d22
正解：A、D
質問 # 88
Drag and Drop Question
Drag and drop the required SAN field items from the left onto the features within the server categories on the right.
正解：
解説：
質問 # 89 
Refer to the exhibit. Which description of the transformation is true?
- A. It changes [email protected]:<port> to [email protected]
- B. It converts [email protected]:<port> to [email protected]
- C. It converts [email protected]:<port> to [email protected]
- D. It changes all patterns that begin with [email protected]:<port> to [email protected]
正解：C
質問 # 90
Refer to the exhibit. The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1.
Which configuration changes are needed for an Expressway-E with dual network interfaces?
- A.
- B.
- C.
- D.
正解：B
質問 # 91
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. name
- D. bandwidth
正解：B
解説：
c-line shows the connection information, Media IP address.
質問 # 92
Refer to the exhibit. When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV records used by Jabber.
DNS A record "expressway-e.example.com" points to the Expressway-E IP and
"cucm.example.com" points to the Cisco Unified Communications Manager.
Which change resolves the DNS problem?
- A. Remove the cisco-uds SRV record for the external DNS.
- B. Change the priority of the SRV record for cisco-uds.
- C. Change cisco-uds to point to the Expressway-E FQDN.
- D. Change the collab-edge record to point to 5061.
正解：A
質問 # 93
When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?
- A. SDP m-line
- B. SDP c-line
- C. SIP record route
- D. SDP b-line
正解：C
質問 # 94
An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is added to the Expressway-C, an error "Connectivity to IM and Presence AXL Service could not be established" is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main administrator account enabled for AXL API permission is being used.
Which configuration change must be made to resolve this error?
- A. Enable the Cisco AXL Web Service on the Expressway-C Message Connector
- B. Enable the Cisco AXL Web Service on the Control Hub
- C. Enable a second administrator account for AXL API permissions on the IM and Presence Service publisher
- D. Enable an End User account for AXL.API permissions on the IM and Presence Service publisher
正解：C
解説：
Configure an account for Message Connector to access the AXL API of the Cisco Unified Communications Manager IM and Presence Service. You must use an independent administrator account, not the main administrator account.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/m essageservice/cmgt_b_spark-hybrid-message-deployment-guide/cmgt_b_spark-hybrid-message- deployment-guide_chapter_010.html
質問 # 95
An Expressway-E is configured using a single NIC with NAT.
How must the Expressway-C traversal client zone be configured to connect to the Expressway-E?
- A. The peer address must be the Expressway-E LAN 1 IP address.
- B. TLS verify must be enabled.
- C. The peer address must be the Expressway-E NAT address.
- D. The zone profile must be set to default.
正解：C
質問 # 96
Refer to the exhibit. The administrator attempted to log in, but Jabber clients cannot log in via mobile and remote access. How is this issue resolved?
- A. A DNS SRV record must be created for _collab-edge._tls.pod1.local that points to the Expressway-E.
- B. The domain pod1.local must be deprovisioned from the Webex cloud for Jabber logins.
- C. Skype for Business mode must be disabled on the DNS server because it conflicts with Jabber login requirements.
- D. The username [email protected] is invalid. The user should instead sign-in simply as jabberuser.
正解：A
質問 # 97
An external Jabber device cannot register. While troubleshooting this issue, the engineer discovers that privately signed certificates are being used on Expressway-C and Expressway-E.
What action will resolve this issue?
- A. The private CA certificate must be placed in the phone trust store.
- B. The device running the Jabber client must use a VPN to register.
- C. The Jabber client must register to the Cisco UCM internally before it will register externally.
- D. The device running the Jabber client must download and trust the private CA certificate.
正解：D
質問 # 98
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
- A. search rules, zones, local zones
- B. transforms, CPL, user policy, search rules
- C. search rules, transforms
- D. DNS zone, local zone, search rules
正解：C
質問 # 99
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verify subject name must be configured on the Expressway-E UC traversal zone?
- A. Expressway-E Cluster Name
- B. Cisco Unified Communications Manager Publisher FQDN
- C. Expressway-C Cluster Name
- D. Webex CUSP Cluster Name
正解：C
解説：
Explanation
https://community.cisco.com/t5/telepresence-and-video/quot-peer-s-tls-certificate-identity-was-unacceptable-quo
質問 # 100
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. Traversal Zone
- B. All
- C. Any
- D. Neighbor Zone
正解：B
質問 # 101
An administrator has been tasked to bulk entitle 200 existing users and ensure all future users are automatically configured for the Webex Hybrid Calendar Service. Which two options should be used to configure these users? (Choose two.)
- A. Select the Hybrid Services settings card in the Cisco Webex Control Hub and import a User Status report that contains only users to be enabled.
- B. Export a CSV list of users in the Cisco Webex Control Hub, set the Hybrid Calendar Service to TRUE for users to be enabled, then import the file back to Manage Users menu in the Cisco Webex Control Hub.
- C. On the Users tab in the Cisco Webex Control Hub, check the box next to each user who should be enabled, then click the toggle for the Hybrid Calendar service to turn it on.
- D. Set up an Auto-Assign template that enables Hybrid Calendar.
- E. From Cisco Webex Control Hub, verify the domain that your Hybrid Calendar users will use, which
正解：B、E
解説：
automatically activates them for the service.
質問 # 102
......
試験解答300-820最新版とテストエンジン：https://jp.fast2test.com/300-820-premium-file.html
合格させる300-820試験最新の300-820試験問題集PDF：https://drive.google.com/open?id=1gGrpvMHfC9ua07dD_Vz-uQLtN7YiQQLB