Sample Questions and Answers
What command is used to check phone registration on a CUCM CLI?
A) show ip phone brief
B) show phone status
C) show risdb query phone
D) show endpoint register
Answer: C) show risdb query phone
Explanation: This command queries the RIS database to display phone registration information in CUCM.
What is the maximum number of IP phones that Cisco Unified CM Express supports in telephony service mode?
A) 50
B) 100
C) 240
D) 450
Answer: C) 240
Explanation: Cisco Unified CME supports up to 240 IP phones, depending on platform and license.
Which of the following is required to enable SRTP on Cisco IP Phones?
A) VPN Tunnel
B) TLS Signaling
C) SSH Access
D) LDAP Integration
Answer: B) TLS Signaling
Explanation: TLS is used for signaling encryption, which enables secure SRTP streams for media traffic.
In which scenario would you need to configure a CTI Route Point in CUCM?
A) Enable call waiting
B) Set up voicemail routing
C) Configure a hunt group
D) Create a call forwarding rule
Answer: C) Configure a hunt group
Explanation: A CTI Route Point is used to direct calls to applications like hunt groups or voicemail.
Which of the following protocols supports peer-to-peer media path optimization?
A) SCCP
B) MGCP
C) SIP
D) H.323
Answer: C) SIP
Explanation: SIP can negotiate a peer-to-peer media path, optimizing media flow directly between endpoints.
Which license is required to enable advanced calling features such as conferencing and mobility on Cisco CUCM?
A) Essential
B) Basic
C) Enhanced
D) Foundation
Answer: C) Enhanced
Explanation: The Enhanced license enables more advanced call features in Cisco Unified Communications Manager.
What Cisco feature enables IP Phones to download corporate directories?
A) IP Phone Services
B) LDAP Integration
C) TFTP Server
D) SIP Trunk
Answer: A) IP Phone Services
Explanation: Cisco IP Phone Services allow endpoints to access directories, messages, and other features.
Which component is required to enable Cisco Jabber for mobile remote access?
A) Cisco Expressway
B) Cisco Unity Connection
C) Cisco TelePresence Server
D) Cisco ISR Router
Answer: A) Cisco Expressway
Explanation: Cisco Expressway provides Mobile and Remote Access (MRA) for Jabber clients outside the enterprise network.
Which protocol is used by Cisco Unity Connection to communicate voicemail status to CUCM?
A) SIP
B) SCCP
C) SMTP
D) IMAP
Answer: A) SIP
Explanation: Unity Connection uses SIP to communicate voicemail status and MWI updates to CUCM.
What happens if a Cisco IP Phone cannot reach its TFTP server?
A) It continues to operate with existing config
B) It goes into “provisioning” mode
C) It reboots in a loop
D) It registers with an alternate CUCM
Answer: A) It continues to operate with existing config
Explanation: If a phone loses contact with the TFTP server but is already configured, it will continue to operate normally.
Which feature allows Cisco phones to prioritize voice traffic on a LAN?
A) LLDP
B) DSCP
C) VLAN Trunking
D) 802.1X
Answer: B) DSCP
Explanation: Differentiated Services Code Point (DSCP) is used to mark and prioritize voice packets across the network.
What service must be running on CUCM for phones to register?
A) TFTP
B) Cisco CallManager
C) RIS Data Collector
D) CTI Manager
Answer: B) Cisco CallManager
Explanation: The CallManager service must be active on at least one node for phone registration to occur.
Which option describes CUCM redundancy in a multi-server cluster?
A) Phones register to all servers simultaneously
B) Phones failover to backup servers in their CUCM group
C) Phones round-robin across available nodes
D) Phones must be manually redirected on failure
Answer: B) Phones failover to backup servers in their CUCM group
Explanation: CUCM Groups define server priority for registration and failover scenarios.
Which Cisco IP Phone model supports Wi-Fi connectivity?
A) 8821
B) 8841
C) 8865
D) 7906
Answer: A) 8821
Explanation: Cisco 8821 is a wireless IP phone designed for mobility in wireless LAN environments.
What does a “Rejected” registration status indicate on a Cisco IP Phone?
A) CUCM is down
B) The phone’s MAC address is not recognized
C) Incorrect device pool
D) Duplicate phone registration
Answer: B) The phone’s MAC address is not recognized
Explanation: A “Rejected” status usually means the phone is not provisioned in CUCM or has an incorrect MAC address.
Which protocol is used by Cisco Unity Connection to access voicemail via desktop email clients?
A) SIP
B) IMAP
C) LDAP
D) POP3
Answer: B) IMAP
Explanation: Unity Connection supports IMAP for desktop clients to access voicemail messages.
Which Cisco software manages firmware upgrades for IP Phones?
A) CUCM
B) Cisco TMS
C) Prime Infrastructure
D) Unified CM Assistant
Answer: A) CUCM
Explanation: CUCM pushes firmware updates to IP Phones using the TFTP service.
Which of the following settings is required to support multicast music-on-hold (MoH)?
A) Source IP
B) Multicast IP address
C) SIP Trunk
D) RTP timeout
Answer: B) Multicast IP address
Explanation: For multicast MoH to work, CUCM must be configured with a multicast IP address for the MoH source.
Which method is used to configure a large number of phones at once in CUCM?
A) Manual Configuration
B) Extension Mobility
C) Bulk Administration Tool (BAT)
D) Auto Discovery
Answer: C) Bulk Administration Tool (BAT)
Explanation: BAT allows administrators to add and configure multiple phones and users simultaneously via CSV files.
Which of the following can provide voicemail transcription services in Cisco environments?
A) Cisco Webex
B) Unity Connection SpeechView
C) CUCM Assistant
D) Expressway C
Answer: B) Unity Connection SpeechView
Explanation: SpeechView transcribes voicemail messages into text for easier user access.
What does the LED color red indicate on a Cisco IP Phone line button?
A) Call on hold
B) Voicemail waiting
C) Line in use by another device
D) DND enabled
Answer: C) Line in use by another device
Explanation: A red LED on a line key typically indicates that the line is in use on another phone (shared line appearance).
Which command on a Cisco voice gateway verifies voice port status?
A) show ip interface brief
B) show voice port summary
C) show telephony-service
D) show dial-peer voice summary
Answer: B) show voice port summary
Explanation: This command displays the status of all voice ports including administrative and operational state.
What does the Cisco TFTP service do in CUCM?
A) Routes SIP messages
B) Encrypts RTP streams
C) Distributes configuration files and firmware
D) Provides voicemail services
Answer: C) Distributes configuration files and firmware
Explanation: The TFTP service supplies phones with config and firmware files during registration and boot-up.
What does it mean when a Cisco IP phone screen is stuck at “Registering”?
A) The phone has successfully registered
B) TFTP server is offline
C) DHCP lease is expired
D) CUCM cannot complete the registration
Answer: D) CUCM cannot complete the registration
Explanation: This typically indicates a registration failure with CUCM due to configuration or connectivity issues.
Which protocol does Cisco Jabber use for instant messaging?
A) SIP
B) XMPP
C) RTP
D) SNMP
Answer: B) XMPP
Explanation: Jabber uses XMPP (Extensible Messaging and Presence Protocol) for chat and presence functionality.
Which device registers with CUCM using SIP or SCCP?
A) Cisco Expressway
B) Cisco ATA 190
C) Cisco Unity Connection
D) Cisco Meeting Server
Answer: B) Cisco ATA 190
Explanation: The ATA 190 registers to CUCM using SIP or SCCP to connect analog devices to VoIP networks.
Which component of CUCM manages endpoint registration?
A) Cisco TFTP Server
B) Cisco Database Layer
C) Cisco CallManager Service
D) RIS Data Collector
Answer: C) Cisco CallManager Service
Explanation: The CallManager service handles call control and endpoint registration in CUCM.
How many digits are typically required for an internal extension in a small deployment?
A) 2
B) 4
C) 6
D) 8
Answer: B) 4
Explanation: A 4-digit extension is common in small to medium-sized Cisco collaboration deployments.
What tool allows administrators to test DTMF tones on Cisco endpoints?
A) Cisco Collaboration Endpoint Debug Tool
B) Cisco Diagnostic Tool
C) Phone Web Interface
D) RTMT
Answer: C) Phone Web Interface
Explanation: You can test DTMF tones and keypad responses via the phone’s web interface under the keypad test section.
Which protocol provides secure voice traffic encryption on Cisco phones?
A) SIP
B) RTP
C) SRTP
D) SCCP
Answer: C) SRTP
Explanation: Secure Real-Time Transport Protocol (SRTP) encrypts voice traffic to ensure privacy and security.
What port number is used by SCCP for signaling?
A) 2000
B) 5060
C) 69
D) 443
Answer: A) 2000
Explanation: SCCP (Skinny Client Control Protocol) uses TCP port 2000 for signaling.
Which log file in RTMT shows call processing events?
A) SDL
B) Tomcat
C) Event Viewer
D) CiscoSyslog
Answer: A) SDL
Explanation: SDL traces provide detailed logs of call processing, signaling, and service behavior.
Which setting ensures a Cisco IP Phone knows its TFTP server via DHCP?
A) Option 43
B) Option 69
C) Option 150
D) Option 66
Answer: C) Option 150
Explanation: DHCP Option 150 provides the IP address of the TFTP server to Cisco IP Phones.
Which method ensures high availability for voicemail services?
A) Load balancing
B) DNS round-robin
C) Unity Connection Clustering
D) Dial-peer redundancy
Answer: C) Unity Connection Clustering
Explanation: Clustering provides voicemail redundancy in Cisco Unity Connection deployments.
Which function is provided by the Cisco CTL (Certificate Trust List)?
A) User authentication
B) Call routing
C) Secure phone registration
D) Firmware update
Answer: C) Secure phone registration
Explanation: CTL ensures phones register securely with trusted CUCM nodes using signed certificates.
Which setting prevents Cisco IP Phones from registering to unauthorized CUCM servers?
A) Extension Mobility
B) Device Mobility
C) Security Profile
D) ITL/CTL Files
Answer: D) ITL/CTL Files
Explanation: ITL and CTL files on phones validate CUCM certificates, preventing unauthorized registrations.
Which tool is used to configure Cisco Meeting Server?
A) CUCM GUI
B) CMS Web Admin
C) TMS Portal
D) Expressway C
Answer: B) CMS Web Admin
Explanation: Cisco Meeting Server is configured and managed through its dedicated Web Admin interface.
How is Cisco Unity Connection accessed via telephone?
A) By using HTTP
B) Through the Cisco Voicemail Portal
C) Using SCCP
D) By calling the voicemail pilot number
Answer: D) By calling the voicemail pilot number
Explanation: Users dial the voicemail pilot number to access Unity Connection for voicemail management.
Which directory service is supported by CUCM for synchronization?
A) OpenLDAP
B) MySQL
C) Microsoft Active Directory
D) PostgreSQL
Answer: C) Microsoft Active Directory
Explanation: CUCM can integrate with Active Directory via LDAP for user sync and authentication.
Which Cisco device is used for analog-to-digital signal conversion?
A) IP Phone
B) ATA Adapter
C) CUCM
D) Unity Server
Answer: B) ATA Adapter
Explanation: Analog Telephone Adapters (ATAs) connect traditional analog devices to IP-based networks.
Which software tool allows exporting and importing phone configurations?
A) BAT
B) RTMT
C) TFTP Server
D) Cisco Prime
Answer: A) BAT
Explanation: The Bulk Administration Tool (BAT) allows importing and exporting phones, users, and other configuration items.
Which configuration on CUCM enables time-based call routing?
A) Route List
B) Time Schedule
C) Partition
D) Calling Search Space
Answer: B) Time Schedule
Explanation: Time Schedules allow administrators to create rules for routing calls during specific hours.
What does the status “Rejected” indicate for a SIP trunk on CUCM?
A) Successful registration
B) Misconfigured SIP security settings
C) DNS failure
D) Trunk not needed
Answer: B) Misconfigured SIP security settings
Explanation: A “Rejected” status typically points to TLS, certificate, or authentication misconfigurations.
Which feature allows Cisco IP Phones to maintain calls during CUCM failover?
A) SRST
B) SIP Keepalives
C) MoH
D) Softkey Templates
Answer: A) SRST
Explanation: Survivable Remote Site Telephony (SRST) provides call control continuity during WAN or CUCM failure.
Which port is used by TFTP for delivering configuration files?
A) 2000
B) 5060
C) 69
D) 443
Answer: C) 69
Explanation: The Trivial File Transfer Protocol (TFTP) uses UDP port 69 to transfer phone configurations and firmware.
Which Cisco IP Phone model supports Bluetooth headsets?
A) 7821
B) 7945
C) 8845
D) 7811
Answer: C) 8845
Explanation: Cisco IP Phone 8845 supports Bluetooth headsets and other wireless accessories.
What feature enables call queuing in CUCM?
A) Hunt List
B) Call Pickup Group
C) Music on Hold
D) Call Park
Answer: A) Hunt List
Explanation: Hunt Lists allow incoming calls to be queued and distributed among a group of users.
What is required for a Cisco IP Phone to perform a successful HTTPS download of a configuration file?
A) DHCP Option 150
B) Valid SSL Certificate on CUCM
C) SRST Config
D) Active TFTP service
Answer: B) Valid SSL Certificate on CUCM
Explanation: HTTPS configuration file downloads require secure communication and a valid CUCM certificate.
Which Cisco component allows integration of voicemail with Microsoft Exchange?
A) Unity Connection Single Inbox
B) CUCM Synchronizer
C) TFTP Bridge
D) Expressway E
Answer: A) Unity Connection Single Inbox
Explanation: Single Inbox syncs voicemails from Unity Connection with Exchange inboxes for unified access.
Which protocol is used by Cisco devices to mark QoS for voice packets?
A) HTTP
B) FTP
C) RTP
D) DSCP
Answer: D) DSCP
Explanation: DSCP (Differentiated Services Code Point) is used to classify and prioritize packets, especially voice traffic.
What’s the default extension used to dial Unity Connection in a basic setup?
A) 5000
B) 4000
C) 7000
D) 9000
Answer: B) 4000
Explanation: Extension 4000 is often used by default as the voicemail pilot number in Cisco Unity Connection setups.a
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