Free 100-890: Supporting Cisco Collaboration Devices Exam Questions and Answers
56 verified practice questions for 100-890.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 19, 2026
- Exam code
- 100-890
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- Cisco
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- First 10, with answers
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- 130 mins · 70%
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Question #1
From the Diagnostics page, what color is clearly marked for warnings issue
Please select an optionIncorrectCorrect answer: A
On the Diagnostics page of the endpoint web interface, critical issues are marked red, warnings are marked yellow and informational items are blue.
Was this answer correct?Question #2
How can the IP address of the Cisco Webex Room 70D system be found?
Please select an optionIncorrectCorrect answer: B
Tap the system name in the upper-left corner of the Touch 10, then Settings and About this device, which shows the IP address and other system information.
Was this answer correct?Question #3
When completing the remedial procedures on the Cisco Webex DX80, an option key is required for activating optional functionality such as MultiSite. Which two types of information does the customer administrator need to transfer the license and generate the option key? (Choose two.)
Select 2 answers.
Please select an optionIncorrectCorrect answer: C, D
To move a license to a replacement unit, the administrator supplies the current option key plus the serial numbers of both the failed and the replacement DX80 so a new key can be generated.
Was this answer correct?Question #4
Which distributed database allows hostnames to be mapped to IP addresses?
Please select an optionIncorrectCorrect answer: C
DNS is the distributed, hierarchical database that resolves hostnames to IP addresses. DHCP assigns addresses, NTP synchronises time and CDP discovers neighbouring Cisco devices.
Was this answer correct?Question #5
Which three statements describe the Cisco TelePresence Management Suite (TMS)? (Choose three.)
Select 3 answers.
Please select an optionIncorrectCorrect answer: B, E, F
TMS is a centralized portal for managing and monitoring video conferencing networks, controlling on-site and remote systems, and integrating with Exchange and Outlook for scheduling.
Was this answer correct?Question #6
The Certificate Trust List (CTL) file is an important file that the Cisco IP phone downloads during the bootup process What information is defined in the CTL file?
Please select an optionIncorrectCorrect answer: C
The CTL lists the trusted Unified CM and TFTP servers, with their certificates, that the phone is authorized to connect to, preventing rogue servers from serving the phone.
Was this answer correct?Question #7
Which network administration command-line tool is available in many computer operating systems for querying the Domain Name System (DNS)?
Please select an optionIncorrectCorrect answer: A
nslookup ships with most operating systems and queries DNS for records; ping, netstat and traceroute test reachability or connections, not DNS records.
Was this answer correct?Question #8
From which network service does a Cisco IP phone request the configuration file during the bootup process?
Please select an optionIncorrectCorrect answer: E
After DHCP supplies the TFTP server address (option 150), the phone requests its configuration file from the TFTP server, which tells it which Unified CM to register with.
Was this answer correct?Question #9
Refer to the exhibit. Which component can be found in the Cisco Webex Room 70D system left screen?
Please select an optionIncorrectCorrect answer: C
Was this answer correct?Question #10
In which two ways should the Secure File Transfer Protocol (SFTP) be used on a Cisco router? (Choose two )
Select 2 answers.
Please select an optionIncorrectCorrect answer: B, C
SFTP runs inside an SSH session, so SSH must be enabled on the router first, and it inherits the full security and authentication of SSH.
Was this answer correct?
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