If you’re aiming to become a reliable professional in the Cisco collaboration space, the Supporting Cisco Collaboration Devices (CLTECH 100-890) certification exam is your first step. Designed to validate your skills in troubleshooting, maintaining, and supporting Cisco IP telephony and video devices, this exam is a critical requirement for individuals pursuing a career in unified communications.
At ExamSage.com, we offer a dedicated, in-depth practice exam that helps you prepare with confidence for the CLTECH 100-890 certification.
🌐 What Is the CLTECH 100-890 Exam?
The CLTECH 100-890 exam, also known as the Supporting Cisco Collaboration Devices Exam, tests your foundational knowledge in working with Cisco collaboration endpoints, IP phones, voice gateways, and CUCM-based infrastructure.
This exam is part of the Cisco Certified Support Technician (CCST) track and is ideal for entry-level technicians, IT support specialists, or any professional responsible for maintaining Cisco collaboration devices in small to medium-sized networks.
🎯 What You Will Learn from This Exam
By preparing for and passing this exam, you will acquire the following valuable skills:
Supporting Cisco IP Phones and Video Endpoints: Learn how to troubleshoot issues related to registration, audio/video, screen issues, firmware upgrades, and network settings.
Understanding CUCM (Cisco Unified Communications Manager): Explore core CUCM functions such as call processing, SIP/SCCP signaling, security certificates, and device registration.
Managing Voicemail with Cisco Unity Connection: Get familiar with voicemail pilot numbers, Unity inbox integration, and voicemail accessibility from phones and remote devices.
Troubleshooting Network and Protocol Issues: Gain proficiency in diagnosing problems related to DHCP, TFTP, DNS, and QoS using tools like RTMT and phone web interfaces.
Supporting Remote Users and SRST: Understand failover and survivability using Survivable Remote Site Telephony (SRST) and Expressway configurations.
📚 Key Topics Covered in the CLTECH 100-890 Exam
The following topics form the backbone of the CLTECH exam and are aligned with Cisco’s official blueprint and industry best practices. Our practice exam at Exam Sage covers all these areas in great detail:
1. Cisco Collaboration Device Basics
Cisco IP Phone models (e.g., 7821, 8845, ATA 190)
Phone boot process and initialization
Web interfaces for phone testing and diagnostics
2. Network Services for Collaboration
DHCP Option 150 and 66
TFTP (port 69), SCCP (port 2000), SIP (port 5060)
DNS and NTP for IP Phone functionality
3. CUCM Core Configuration and Troubleshooting
CallManager service and phone registration
Device pools, security profiles, and ITL/CTL files
Bulk Administration Tool (BAT) usage
Time-based call routing and hunt groups
4. Voice Gateway Support
Dial peers and voice port configurations
Codec negotiation and DTMF support
Basic troubleshooting commands:
show voice port summary,show dial-peer
5. Voicemail and Unity Connection
Accessing voicemail using pilot numbers
Single Inbox integration with Microsoft Exchange
Unity Connection clustering and high availability
6. Security and QoS
SRTP and secure registration using CTL files
DSCP marking for voice prioritization
TLS certificates and SIP trunk authentication
7. Remote and Cloud Collaboration
Cisco Expressway C and E overview
Jabber support for XMPP and video integration
SRST for WAN failover
🧠 Why Choose Exam Sage for Your CLTECH 100-890 Practice Exam?
At Exam Sage, we specialize in offering premium, exam-relevant practice tests that reflect the actual difficulty and format of Cisco certification exams. Our Supporting Cisco Collaboration Devices Practice Exam is carefully crafted to provide:
✅ 330+ High-Quality Questions
✅ Accurate Answers with Explanations for Deeper Understanding
✅ Complete Coverage of CUCM, Unity, IP Phones, SRST, and More
✅ Updated to Reflect the Latest Cisco Technologies and Exam Trends
✅ Instant Download with No Subscription Required
Whether you’re taking the CLTECH exam as part of your job requirements or you’re working toward higher Cisco certifications, our exam prep will help bridge the gap between theory and practical troubleshooting.
🔍 Who Should Take This Exam?
This exam is ideal for:
Entry-level collaboration or voice engineers
IT help desk technicians supporting Cisco devices
Field engineers and remote support personnel
Students and professionals pursuing Cisco career paths
The skills developed while preparing for the CLTECH exam apply directly to real-world environments and can serve as a springboard into more advanced certifications such as CCNP Collaboration or Cisco Certified Specialist – Collaboration Core.
📥 Start Preparing Today with Exam Sage
If you’re looking to pass the CLTECH 100-890 exam on your first attempt, you need a study resource that mirrors the actual test—both in content and format. That’s exactly what the ExamSage.com Supporting Cisco Collaboration Devices Practice Exam delivers.
With questions designed to challenge and explanations designed to teach, Exam Sage helps you become more than just exam-ready—you’ll become job-ready.
Sample Questions and Answers
1. Which protocol is primarily used by Cisco IP Phones to register with the Cisco Unified Communications Manager?
A) SCCP (Skinny Client Control Protocol)
B) SIP (Session Initiation Protocol)
C) H.323
D) MGCP (Media Gateway Control Protocol)
Answer: A) SCCP (Skinny Client Control Protocol)
Explanation: Cisco IP Phones commonly use SCCP to communicate with Cisco Unified Communications Manager (CUCM), allowing call control and signaling. SIP is also supported, but SCCP is Cisco proprietary and widely used for Cisco endpoints.
2. What is the default port number used by Cisco IP Phones for SCCP signaling?
A) 5060
B) 2000
C) 1720
D) 80
Answer: B) 2000
Explanation: SCCP signaling between Cisco IP Phones and CUCM occurs over TCP port 2000 by default. Port 5060 is commonly used for SIP.
3. Which Cisco collaboration device acts as a centralized platform for endpoint device registration, call control, and services?
A) Cisco Unified Border Element (CUBE)
B) Cisco Unified Communications Manager (CUCM)
C) Cisco Unified Contact Center Express (UCCX)
D) Cisco Unified Presence Server
Answer: B) Cisco Unified Communications Manager (CUCM)
Explanation: CUCM manages call control, device registration, and features for Cisco IP endpoints in an enterprise environment.
4. A Cisco IP Phone is displaying “Not Registered” status. What is the first step to troubleshoot?
A) Verify physical Ethernet connection and switch port configuration.
B) Reset the phone to factory defaults.
C) Update CUCM software.
D) Replace the phone’s power adapter.
Answer: A) Verify physical Ethernet connection and switch port configuration.
Explanation: The most common cause for phones not registering is network connectivity or VLAN issues. Confirming physical and network settings is the first step.
5. Which VLAN is typically used for Cisco IP Phone traffic in a converged network environment?
A) Data VLAN
B) Voice VLAN
C) Management VLAN
D) Guest VLAN
Answer: B) Voice VLAN
Explanation: Voice VLAN separates voice traffic from data traffic for QoS and security purposes.
6. What command on a Cisco switch shows the voice VLAN configured on a switch port?
A) show vlan voice
B) show interface switchport
C) show vlan brief
D) show voice vlan
Answer: B) show interface switchport
Explanation: The show interface switchport command displays detailed port settings, including voice VLAN configuration.
7. Which protocol is used by Cisco phones to download firmware files?
A) TFTP (Trivial File Transfer Protocol)
B) FTP (File Transfer Protocol)
C) HTTP
D) SCP
Answer: A) TFTP (Trivial File Transfer Protocol)
Explanation: Cisco IP Phones use TFTP to download firmware and configuration files from CUCM or other TFTP servers.
8. What is the purpose of the Cisco Unified Communications Manager Express (CME)?
A) To provide call control in small to medium-sized Cisco voice deployments.
B) To replace CUCM in large enterprises.
C) To provide SIP trunking only.
D) To act as a media gateway for analog phones.
Answer: A) To provide call control in small to medium-sized Cisco voice deployments.
Explanation: CME runs on Cisco routers and provides call control and phone management for smaller deployments without needing full CUCM.
9. Which Cisco device is used to securely connect an on-premises Cisco voice network with a service provider or cloud-based PBX?
A) Cisco Unified Border Element (CUBE)
B) Cisco Unified Communications Manager (CUCM)
C) Cisco Unified Contact Center Express (UCCX)
D) Cisco ISR Router
Answer: A) Cisco Unified Border Element (CUBE)
Explanation: CUBE acts as a SIP session border controller, providing security, interoperability, and call control at the network edge.
10. What is the primary function of Cisco Jabber?
A) Video conferencing only
B) Instant messaging, presence, voice, and video communication
C) Firewall security
D) Device provisioning
Answer: B) Instant messaging, presence, voice, and video communication
Explanation: Cisco Jabber is a collaboration application that provides messaging, presence, voice, video, and conferencing.
11. In Cisco IP Phones, which LED color typically indicates a missed call?
A) Solid green
B) Blinking red
C) Solid red
D) Blinking green
Answer: B) Blinking red
Explanation: A blinking red LED on Cisco phones usually indicates a missed call or voicemail notification.
12. Which Cisco endpoint is a video conferencing device designed for huddle rooms and small conference rooms?
A) Cisco IP Phone 8800 series
B) Cisco Webex Room Kit Mini
C) Cisco Unified IP Conference Station 7937
D) Cisco Jabber
Answer: B) Cisco Webex Room Kit Mini
Explanation: The Webex Room Kit Mini is designed for small spaces, providing video conferencing and content sharing.
13. What feature does Cisco’s SRST (Survivable Remote Site Telephony) provide?
A) Backup call control during WAN failure
B) Voice mail services
C) Video conferencing
D) SIP trunk security
Answer: A) Backup call control during WAN failure
Explanation: SRST allows local call control on Cisco routers when connectivity to the main CUCM is lost.
14. Which tool is used to collect logs from Cisco IP Phones for troubleshooting?
A) Cisco Prime Collaboration
B) Cisco Unified Communications Manager Real-Time Monitoring Tool (RTMT)
C) Wireshark
D) Cisco Network Assistant
Answer: B) Cisco Unified Communications Manager Real-Time Monitoring Tool (RTMT)
Explanation: RTMT is used to monitor and collect logs from CUCM and endpoints.
15. What is the default DHCP option that instructs Cisco IP Phones where to find the TFTP server?
A) Option 43
B) Option 150
C) Option 66
D) Option 54
Answer: B) Option 150
Explanation: DHCP Option 150 provides the IP address of the TFTP server for Cisco IP Phones to download configuration files.
16. Which protocol does Cisco Jabber use for presence information?
A) SIP SIMPLE
B) XMPP (Extensible Messaging and Presence Protocol)
C) LDAP
D) HTTP
Answer: A) SIP SIMPLE
Explanation: Cisco Jabber uses SIP SIMPLE for presence and instant messaging.
17. You need to upgrade the firmware on Cisco IP Phones remotely. Which CUCM feature allows this?
A) Device Profiles
B) Software Load Distribution
C) TFTP Server Configuration
D) Bulk Administration Tool (BAT)
Answer: D) Bulk Administration Tool (BAT)
Explanation: BAT enables bulk operations including firmware upgrades across many phones simultaneously.
18. Which Cisco IP Phone feature allows users to place a call on hold and retrieve it from another phone?
A) Call Forwarding
B) Call Park
C) Call Pickup
D) Call Transfer
Answer: B) Call Park
Explanation: Call Park lets users place a call on hold and retrieve it from another phone within the system.
19. What is the function of Cisco Unified Communications Manager Device Pool?
A) Grouping devices for common region, date/time, and codec settings
B) Managing user credentials
C) Assigning IP addresses to phones
D) Grouping voice mailboxes
Answer: A) Grouping devices for common region, date/time, and codec settings
Explanation: Device Pools simplify management by grouping devices sharing settings like codec preference and location.
20. When troubleshooting a Cisco IP Phone that shows “Not Registered” error, which log file on CUCM should be checked first?
A) Call Detail Records (CDR)
B) Cisco Unified CM Trace Files (CCM Logs)
C) Syslog server logs
D) DHCP logs
Answer: B) Cisco Unified CM Trace Files (CCM Logs)
Explanation: CCM logs provide detailed information about registration attempts and failures.
21. Which Cisco endpoint supports both SIP and SCCP signaling protocols?
A) Cisco Unified IP Phone 7945
B) Cisco Webex Board
C) Cisco Unified Video Advantage
D) Cisco Jabber
Answer: A) Cisco Unified IP Phone 7945
Explanation: The 7945 supports both SIP and SCCP protocols for call signaling.
22. What is the recommended QoS setting for Cisco IP Phones in a converged network?
A) Best Effort
B) Low Latency Queuing (LLQ) with strict priority for voice traffic
C) Weighted Fair Queuing (WFQ)
D) Random Early Detection (RED)
Answer: B) Low Latency Queuing (LLQ) with strict priority for voice traffic
Explanation: LLQ ensures voice packets get priority treatment to minimize delay and jitter.
23. Which feature allows Cisco IP Phones to authenticate with CUCM using certificates?
A) 802.1X Authentication
B) Cisco TrustSec
C) Secure SCCP (SCCPs)
D) Cisco AnyConnect
Answer: A) 802.1X Authentication
Explanation: 802.1X can be used to authenticate devices at the network level using certificates, enhancing security.
24. Which Cisco collaboration device is primarily designed for analog phones integration?
A) Cisco Unified IP Phone 8841
B) Cisco VG Series Voice Gateway
C) Cisco Webex Desk Pro
D) Cisco Jabber
Answer: B) Cisco VG Series Voice Gateway
Explanation: VG Series Gateways connect analog phones or legacy PBX to IP telephony systems.
25. What does the Cisco Unified Communications Manager Serviceability page allow administrators to do?
A) Manage call routing policies
B) Configure phone firmware updates and trace logs
C) Provision user accounts
D) Configure voicemail boxes
Answer: B) Configure phone firmware updates and trace logs
Explanation: The Serviceability page provides tools for diagnostics and system monitoring.
26. Which feature on Cisco IP Phones enables “Do Not Disturb” (DND) functionality?
A) Call Forward No Answer
B) Call Blocking
C) Call Blocking Service
D) Do Not Disturb button/function
Answer: D) Do Not Disturb button/function
Explanation: DND prevents the phone from ringing and sends calls directly to voicemail or busy treatment.
27. What is the purpose of the Cisco Unified Communications Manager Jabber Service Profile?
A) Defines the user’s Jabber service settings like IM, presence, and voice
B) Assigns device licenses
C) Configures voice mail settings
D) Configures video conferencing endpoints
Answer: A) Defines the user’s Jabber service settings like IM, presence, and voice
Explanation: The service profile configures how Jabber operates for the user.
28. Which Cisco tool can be used for bulk import and management of phone devices in CUCM?
A) Cisco Configuration Professional
B) Bulk Administration Tool (BAT)
C) Cisco Prime Collaboration
D) Cisco Packet Tracer
Answer: B) Bulk Administration Tool (BAT)
Explanation: BAT allows administrators to add, update, and delete multiple devices at once.
29. Which Cisco endpoint supports video calls and is designed for executive office use?
A) Cisco IP Phone 7941
B) Cisco Webex Desk Pro
C) Cisco Unified IP Conference Station 7937
D) Cisco Jabber
Answer: B) Cisco Webex Desk Pro
Explanation: The Desk Pro supports video, voice, and content sharing optimized for executives.
30. What is the role of Cisco Prime Collaboration in Cisco Collaboration architecture?
A) Provides centralized provisioning, monitoring, and troubleshooting tools
B) Acts as a call control platform
C) Provides voicemail services
D) Provides SIP trunking services
Answer: A) Provides centralized provisioning, monitoring, and troubleshooting tools
Explanation: Cisco Prime Collaboration is used for managing and monitoring Cisco collaboration endpoints and infrastructure.
