350-801 CLCOR:Implementing and Operating Cisco Collaboration Core Technologies
Update：2026年5月30日
Questions and Answers: 595 Q&A
1.
Which Webex Calling construct is used to organize calling features within a physical site?
2.
A collaboration engineer is configuring the QoS trust boundary for Cisco UCM voice and video conferencing. Which two trust boundary configurations are valid? (Choose two.)
3.
Which action is required if an engineer wants to have Cisco Unified Communications Manager configuration for an MGCP gateway?
4.
What is the purpose of the Claim users to your organization feature in Cisco Webex Control Hub?
5.
On which protocol and port combination does Cisco prime collaboration receive notifications (Traps and Inform Requests) from several network devices in the collaboration infrastructure for which it has requested notifications?
6.
Refer to the exhibit. In this Cisco UCM setup configured for EARLY OFFER, what is the codec preference line in the initial SIP INVITE SDP?
7.
Which destination does cisco UCM use DNS to resolve fully qualified domain names to IP addresses?
8.
A collaboration engineer must optimize the dial plan within Cisco UCM. There are multiple remote sites. and each site has its own route patterns and local gateways. What should the engineer do on the Cisco UCM to optimize the dial plan?
9.
A call is failing to establish between two SIP Devices. The Called device answer with this SDP. Which SDP parameter causes this issue?
10.
Which type of input is required when configuring a third-party SIP phone?
11.
Refer to the exhibit. There is a call flow between Phone A and Phone B. Phone B (holder) places Phone A (holdee) on hold.Which MRGL and Audio Source are played to Phone A?
12.
Which statement about Cisco Unified Communications Manager and Cisco IM and Presence backups is true?
13.
An administrator would like to set several Cisco Jabber confíguration parameters to only apply to mobile clients (iOS and Android). How does the administrator accomplish this with Cisco Jabber 12.9 and Cisco UCM 12.5?
14.
which Cisco unity Connection handler plays a greeting at announces the option to dial a user extension by default?
15.
What is the function of the Cisco Unity Connection Call Handler?
16.
An administrator is troubleshooting an issue where an 8845 is not joining the correct voice VLAN configuration from a switch and they believe that LLDP is the issue. Which command allows the administrator to see the packets sent from the phone to the switch?
17.
Refer to the exhibit. A company recently deployed Cisco Jabber. Users log in to Jabber by using their email address in a domain named company.com. The users report that they cannot register their Jabber telephony services when working from home unless they use a VPN. An engineer runs the DNS lookup tool in Cisco Expressway-C to troubleshoot the issue. What is the cause of the issue?
19.
An engineer configures a Cisco Unified Border Element and must ensure that the codecs negotiated meet the ITSP requirements.The ITSP supports G.711ulaw and G.729 for audio and H.264 for video. The preferred voice codec is G.711. Which configuration meets this requirement?
20.
What Is one of the differences between Ansible and Chef?
21.
Which DiffServ marking is the most likely to drop packets?
22.
A network administrator deleted a user from the LDAP directory of a company. The end user shows as Inactive LDAP Synchronize User in Cisco Unified Communications Manager. Which step is next to remove this user from Cisco Unified Communications Manager?
23.
Endpoint A calls endpoint B. What is the only audio codec that can be used for the call?
24.
What is a description of the DiffServ model used for implementing QoS?
25.
Which DiffServe PHB preserves backward compatibility with any IP precedence scheme?
26.
Where is the default for maximum session Bit Rate for a region configured?
27.
This INVITE is sent to an endpoint that only supports G.729. What must be done for this call to succeed?
28.
How does traffic policing respond to violations?
29.
An administrator is troubleshooting an issue where an 8845 is not joining the correct voice VLAN configuration from a switch and they believe that LLDP is the issue. Which command allows the administrator to see the packets sent from the phone to the switch?
30.
An administrator troubleshoots a DNS issue with Cisco UCM and observes that the hostname resolution returns the wrong IP address. The DNS team informs the administrator that the A/AAA record was recently updated on the DNS server. Which action must be taken on Cisco UCM to reflect the correct entries?
31.
Where is Directory Connector hosted in a Cisco Webex Hybrid Services deployment?
32.
According to the QoS Baseline Model, drag and drop the applications from the left onto the correct Per-Hop Behavior values on the right.
interactive video
bulk data
voice
network management
call-signaling
AF31/CS3
CS2
EF
AF41
AF11
33.
Refer to the exhibit. Calls to Cisco Unity Connection are failing across Cisco Unified Border Element when callers try to select a menu prompt Why is this happening and how is it fixed?
34.
How does an administrator ensure compliance with ITU-T G.114 latency requirements when deploying voice and video applications over routes that include a geostationary satellite?
35.
Refer to the exhibit. Which trouoleshooting step must be performed to investigate the issue?
36.
Refer to the exhibit. An engineer must modify the existing QoS policy-map statement LLQ for voice traffic. What change must the engineer make in the configuration?
37.
Refer to the exhibit. Users at a company located in New York cannot place calls. The New York gateway is configured with a T1 ISDN PRI card with 24 channels. The engineer runs the show isdn status command and receives output. Which action must the engineer take to resolve the issue?
38.
Which Cisco IM and Presence service handles failover and state changes in the cluster?
39.
Which command is used in a Cisco IOS XE TDM gateway to configure the voice T1/E1 controller to provide clocking?
40.
What are two features of Cisco Expressway that the customer gets if Expressway-C and Expressway-E are deployed? (Choose two)
41.
What is the validity period of the ITLRecovery certificate in Cisco UCM?
42.
SIP proxies have operations defined in RFC 3261 and supporting extensions. Though no IETF RFC completely defines how SBCs must function, SBCs evolved over the years. Which two operations demonstrate the high-level differences between SBCs and SIP proxies? (Choose two.)
43.
What is the purpose of a hybrid Local Gateway?
44.
An incoming off-net call to a user fails. An engineer notices that the off-net call is G.711, but the phone accepts only G.729. Which media resource on a Cisco Unified Border Element and Cisco Unified Communications Manager must the engineer configure to Manage the engineer configure to manage the codec negotiation?
45.
Where in Cisco UCM are codec negotiations configured for endpoints?
46.
Refer to the exhibit. The SDP offerlanswer has been completed successfully but there is no DTMF when users press keys. What is the cause ofithe issue?
47.
Which open-standard protocol is the basis for the Extensible Messaging and Presence Protocol?
48.
An engineer is configuring a PRI card on a Cisco ISR 4300 Series Router. When the engineer configures the voice PRI on the router, this error is received: "T1 0/1/0: No DSP resources to configure voice feature'". Which action must the engineer take to resolve the issue if a PVDM card was installed in the motherboard?
49.
Which application traffic does the DiffServ AF41 class according to the Cisco Collaboration System Solution Reference Network Design?
50.
When designing the capacity for a Cisco UCM 12.x cluster, an engineer must decide which VMware template will be used for each node. What is the lowest number of users supported in a template and the highest number of users in a template?
51.
What is the purpose of bandwidth management when designing a Cisco collaboration solution?
52.
A Cisco Telepresence SX80 suddenly has issues displaying main video to a display over HDMI. Which command can you use from the SX80 admin CLI to check the video output status to the monitor?
53.
What is the maximum length of digits for any phone number according to ITU recommendation E. 164?
54.
You are adding regions in Cisco Unified Communications Manager. Which codec(s) are selected when a call is placed if you set up the max audio bit rate to use 8 kbps?
55.
When a user dials a number with a phone that is registered to the Cisco Unified Communications Manager, what is the default timeout before the number is sent?
56.
Which configuration step is necessary for a Cisco SIP phone to synchronize its time with a specific source?
57.
Which information is needed to restore the backup of a Cisco UCM publisher successfully?
58.
What is the difference between Cisco Unified Border Element and a conventional Session Border Controller?
59.
Which action enables Cisco MRA?
60.
Which program is required to deploy the Cisco Jabber client on an on-premises Cisco collaboration solution?
61.
Refer to the exhibit. Which two codec permutations should be transcoded by this dspfarm? (Choose two)
62.
According to the QoS Baseline Model, drag and drop the applications from the left onto the Per-Hop Behavior values on the right.
bulk data
call-signaling
network management
interactive video
voice
AF41
AF31/CS3
EF
AF11
CS2
提示
63.
Refer to the exhibit. An engineer must implement toll fraud prevention on a Cisco UCM cluster by allowing only the indicated IP address and protocols through Cisco Unified Border Element. What must be configured?
64.
An engineer configures local route group names to simplify a dial plan. Where does the engineer set the route group according to the local route group names that are configured?
65.
A user dials 9011841234567 to reach Vietnam. Which steps send the call to the PSTN provider as 011841234567?
66.
When a phone is registered over Mobile and Remote Access, where does it register?
67.
What is the purpose of configuring locations in a Cisco Webex dial plan?
69.
An engineer is designing a high availability and failover solution for two Cisco Unified Border Element routers. The first router (cube 1.abc.com) takes 60% of the calls and the second router (cube2 abc.com) takes 40% of the calls. Assume all DNS A records have been created. Which two SRV records are needed for a load balanced solution? (Choose two.)
70.
An engineer must deploy the Webex app to a Windows Virtual Desktop Infrastructure environment by using these settings.
- Thin client plugin: Installed
- Call service-enabled user: Media is optimized
- Calls on Webex app: Media is optimized
Which two command-line arguments are valid when running the installer? (Choose two.)
71.
A customer enters no IP domain lookup on the Cisco IOS XE gateway to suppress the interpreting of invalid commands as hostnames. Which two commands are needed to restore DNS SRV or A record resolutions? (Choose two.)
72.
An administrator with IDXXXXXXXXX is receiving complaints of pixilation, smearing, and pulsing of video calls between two offices that are connected by a WAN. Assuming that QoS is implemented on the WAN connection which classification is used to mark the video traffic. according to the Cisco Qos baseline?
73.
Refer to the exhibit. An administrator deploys Mobile and Remote Access for Jabber and discovers that Jabber for Windows does not register to Cisco UCM while outside of the office. What is a cause of this issue?
74.
The service provider is serving hosts with two different multicast streams from source X and source Y. Source X is multicast group 224.0.0.0/8, and source Y is multicast group 226.0.0.0/8. Multicast source X should send its stream through bidirectional RP address 10.20.1.1, and multicast source Y should send its stream through RP address 10.20.2.1. Which configuration meets these requirements?
75.
What are two common attributes of XMPP XML stanzas? (Choose two.)
76.
An ISP Is Implementing end-to-end fault monitoring for a customer based on the IEEE 802.3ah standard. The solution must detect when 15 or more corrupted Ethernet packets arrive within 10 ms and stop propagating traffic through the ISP backbone network or to the customer side. Which configuration must the ISP engineer apply?
77.
A customer wants to deploy Cisco Jabber Phone Mode with contacts. Which two confiqurations are needed to accomplish this goal? (Choose two.)
78.
Which method is used to avoid toll fraud with Cisco UCM calls?
79.
What are two characteristics of jitter in voice and video over IP communications?(Choose two)
80.
An engineer must configure a dial plan for a new Cisco UCM cluster. Standard local route groups must be used for all local calls. After the route pattern, route list, and route groups are configured, which settings must the engineer configure for the standard local route groups?
81.
A recent audit discovered incidents of toll fraud. Restrictions should include Cisco UCM class of service and supplementary services features. Which two actions in Cisco UCM prevent further toll fraud from happening? (Choose two.)
82.
Where is urgent priority enabled to bypass the T302 timer?
83.
Which call routing pattern is used for phone numbers that are in the E.164 format?
84.
Which DSCP value must be selected to mark video traffic between two Cisco 8845 phones?
85.
Refer to the exhibit. An INVITE with the SDP in the exhibit is received. Based on the configuration, which two codecs will be in the SDP of the outbound INIVTE? (Choose two.)
86.
What is a QoS requirement for VolP calls?
87.
.Which field of a Real-Time Transport Protocol packet allows receiving devices to detect lost packets?
88.
An administrator configured SIP route patterns cisco com and uc(5-7] cisco 1 com in Cisco UCM A route pattern must be added for ucce2.cisco1.com. Which two patterns complete the configuration*? (Choose two.)
89.
An engineer must deploy the Cisco Webex app to a Windows Virtual Desktop Infrastructure environment that has a roaming database named spark roaming store.db stored in a user's AppDatalRoaming directory. Which two command-line arguments must be used when running the installer? (Choose two.)
90.
An end user at a remote site is trvina to initiate an Ad Hoc conference call to an end user at the main site. The conference bridae is configured to support G.711. The remote user's phone only supports G.729. The remote end user receives an error message on the phone: "Cannot Complete Conference Call." What is the cause of the issue?
91.
A Cisco UCM user with directory number 4401 dials 5507. and the call is routed to a Cisco Unified Border Element. Which IP address will the call be sent to?
92.
Which option must be used when configuring the Local Gateway for a Cisco Webex Calling trunk?
93.
CAR is an example of which technique?
94.
An engineer deploys a Cisco Expressway-E server for a customer who wants to utilize all feature on the server. Which feature does the engineer configure on the Expressway-E?
95.
If a phone needs to register with cucm1.cisco.com, which network service assists with the phone registration process?
96.
Which two configuration elements are part of the Cisco Unified Communications Manager toll-fraud prevention? (Choose two.)
97.
An engineer must manually register an analog por t with cisco UCM using the MGCP protocol. Which commands are required?
98.
What makes Cisco Unified Border Element a better choice than a conventional Session Border Controller?
99.
Which SNMP service must be activated manually on the Cisco UCM after installation?
100.
Refer to the exhibit. An enaineer is configuring class of control for a user in Cisco UCM. Which change will ensure that the user is unable to call2143?
101.
An engineer must enable onboarding of on-premises devices by using activation codes to a Cisco UCM server. The engineer activated the Cisco Device Activation Service and set the default registration method to use the codes. Which action completes the configuration?
102.
A network administrator with ID XXXXXXXXX has determined that a WAN link between two Cisco UCM clusters supports only 1 Mbps of bandwidth for voice traffic. How many calls does this link support if G.711 as the audio codec is used?
103.
Which codec should an engineer select for a call mode between “Dallas-REG” & “Austin-REG”?
104.
What is a consideration when provisioning network bandwidth for an IP network?
