Sample Questions and Answers
How does Cisco handle NAT traversal for SIP calls?
Using Cisco Unified Border Element (CUBE) for session border control
B. Using FTP
C. Using MGCP
D. Using DHCP
Answer: A
Explanation: CUBE manages NAT traversal and SIP session border control.
What is the Cisco IP phone “Line Appearance” feature?
It allows multiple directory numbers to be displayed on one phone line
B. It assigns IP addresses
C. It stores voicemail messages
D. It manages user presence
Answer: A
Explanation: Line Appearance lets users see and use multiple phone numbers on one phone.
What Cisco Unified Communications Manager service is responsible for phone services like speed dials and directories?
Cisco CTI Manager
B. Cisco TFTP Service
C. Cisco Call Manager Service
D. Cisco Unity Connection
Answer: B
Explanation: TFTP service provides configuration files to phones including services.
Which Cisco Unified Communications Manager service is responsible for handling device registrations?
Cisco CallManager Service
B. Cisco TFTP Service
C. Cisco Database Layer Monitor
D. Cisco CTI Manager
Answer: A
Explanation: The CallManager service handles SIP and SCCP device registrations.
What is the default UDP port used by Cisco SCCP phones to communicate with CUCM?
2000
B. 5060
C. 2427
D. 5061
Answer: A
Explanation: SCCP phones use UDP port 2000 for signaling with CUCM.
Which Cisco Unified Communications Manager feature allows centralized call control and media services in a distributed network?
CUCM Cluster
B. Device Pool
C. Partition
D. Location
Answer: A
Explanation: A CUCM cluster provides scalability and centralized call control across multiple sites.
Which codec is preferred by Cisco for voice communication due to its balance of bandwidth and quality?
G.711
B. G.729
C. G.723.1
D. G.722
Answer: B
Explanation: G.729 is often preferred as it provides good voice quality at low bandwidth usage.
What Cisco Unified Communications Manager component defines the physical location of devices for bandwidth management?
Location
B. Region
C. Device Pool
D. Partition
Answer: A
Explanation: Locations define bandwidth policies between sites.
Which Cisco Unified Communications feature allows a call to be transferred without notification to the original caller?
Blind Transfer
B. Consultative Transfer
C. Call Park
D. Call Pickup
Answer: A
Explanation: Blind transfer sends the call directly to another number without consulting.
What is the maximum number of CUCM nodes supported in a cluster?
20
B. 10
C. 15
D. 25
Answer: A
Explanation: CUCM supports up to 20 nodes in a cluster for scalability.
Which Cisco feature allows a user to receive calls on their desk phone and mobile device simultaneously?
Single Number Reach
B. Extension Mobility
C. Call Park
D. Hunt Group
Answer: A
Explanation: Single Number Reach rings multiple devices with one number.
What is the primary purpose of Cisco’s SIP Trunking?
To connect CUCM to external SIP providers or other SIP-enabled systems
B. To assign IP addresses to phones
C. To provide voicemail service
D. To manage user accounts
Answer: A
Explanation: SIP trunks link CUCM to service providers or other SIP systems.
What is the role of Cisco Unified Border Element (CUBE)?
Acts as a session border controller to facilitate SIP call routing between different networks
B. Provides voicemail services
C. Manages call routing within CUCM
D. Provides call recording
Answer: A
Explanation: CUBE handles SIP signaling and media traversal between networks.
Which Cisco Unified Communications Manager component is responsible for managing phone configuration files?
TFTP Service
B. Cisco CallManager Service
C. Cisco CTI Manager
D. Cisco Database Layer Monitor
Answer: A
Explanation: TFTP service delivers configuration files to IP phones during registration.
Which protocol does Cisco Jabber primarily use for presence and instant messaging?
XMPP
B. MGCP
C. SCCP
D. FTP
Answer: A
Explanation: Jabber uses XMPP for presence and IM.
What is the function of the Cisco Unified Communications Manager “Route Pattern”?
Defines the digit string for routing outbound calls
B. Groups devices by location
C. Sets codec priorities
D. Defines voicemail settings
Answer: A
Explanation: Route Patterns determine how CUCM routes outbound calls.
What does “Call Admission Control” (CAC) prevent in Cisco IP telephony networks?
Network congestion caused by too many simultaneous calls
B. Unauthorized user access
C. Phone registration failures
D. Firmware updates
Answer: A
Explanation: CAC limits call numbers to avoid exceeding bandwidth capacity.
Which Cisco protocol is used for signaling in video calls over Cisco Unified Communications?
SIP
B. MGCP
C. FTP
D. RTP
Answer: A
Explanation: SIP is used for call signaling in video and voice sessions.
Which Cisco IP phone feature allows users to transfer a call directly to voicemail?
Call Forward to VM
B. Call Park
C. Call Pickup
D. Call Hold
Answer: A
Explanation: Call Forward to Voicemail sends the call directly to the user’s voicemail box.
What is the purpose of a “Device Pool” in CUCM?
To assign common device configuration settings such as region, location, and codec preferences
B. To create user accounts
C. To route calls
D. To assign licenses
Answer: A
Explanation: Device Pools simplify device configuration by grouping settings.
What does “Hunt Group” in Cisco Unified Communications allow?
Calls to be distributed to a group of phones sequentially or simultaneously
B. User logins on multiple devices
C. Call recording
D. Voicemail delivery
Answer: A
Explanation: Hunt Groups distribute calls to multiple devices based on a pattern.
How does Cisco handle high availability for CUCM?
By deploying a redundant cluster of servers with active and standby nodes
B. Using load balancing hardware only
C. By increasing bandwidth
D. Through software updates
Answer: A
Explanation: CUCM clusters provide failover and redundancy.
Which feature in Cisco Unified Communications Manager enables centralized control of user profiles and preferences?
User Profile Management
B. Partition
C. Route Group
D. Device Pool
Answer: A
Explanation: User profiles centralize settings and preferences.
Which Cisco IP telephony feature allows a user to temporarily park a call and retrieve it from another device?
Call Park
B. Call Forward
C. Call Transfer
D. Hunt Group
Answer: A
Explanation: Call Park is designed for temporary call holding accessible from any phone.
What Cisco Unified Communications feature allows prioritization of voice traffic over data on a network?
Quality of Service (QoS)
B. VLAN segmentation
C. DHCP
D. NAT
Answer: A
Explanation: QoS prioritizes voice packets to maintain call quality.
Which Cisco Unified Communications Manager service enables Computer Telephony Integration (CTI)?
Cisco CTI Manager
B. Cisco TFTP Service
C. Cisco CallManager Service
D. Cisco Database Layer Monitor
Answer: A
Explanation: CTI Manager handles CTI applications and integration.
Which IP phone feature in Cisco Unified Communications Manager allows a user to make calls without using the handset?
Speakerphone
B. Call Forward
C. Call Park
D. Call Pickup
Answer: A
Explanation: Speakerphone allows hands-free calling.
What is the purpose of Cisco Unified Communications Manager “Softkey Template”?
Defines the function keys available on IP phones
B. Controls call routing
C. Assigns directory numbers
D. Manages licenses
Answer: A
Explanation: Softkey Templates configure programmable keys on phones.
Which Cisco protocol is used for transporting voice media packets?
RTP
B. SIP
C. MGCP
D. FTP
Answer: A
Explanation: RTP carries the actual voice media packets in real time.
What is Cisco’s recommended practice to secure CUCM administrator access?
Use role-based access control (RBAC) with least privilege principle
B. Share passwords across admin accounts
C. Disable logging
D. Use default passwords
Answer: A
Explanation: RBAC enforces security by limiting access based on roles.
How does Cisco support video endpoints in CUCM?
Via H.264 codec and Cisco TelePresence integration
B. Only with SCCP phones
C. Using FTP
D. Via MGCP gateways only
Answer: A
Explanation: CUCM supports video through H.264 and TelePresence endpoints.
Which Cisco tool can be used to simulate voice networks and CUCM configurations?
Cisco Packet Tracer
B. Cisco Jabber
C. Cisco Unity Connection
D. Cisco Webex
Answer: A
Explanation: Packet Tracer simulates network and voice configurations for learning.
What Cisco feature allows a user to make and receive calls on their computer?
Cisco Jabber
B. Call Park
C. Hunt Group
D. Call Pickup
Answer: A
Explanation: Cisco Jabber provides softphone functionality on computers.
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