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Specialist OpenScape Enterprise Practice Exam
Question 1. Which component in OpenScape Enterprise is primarily responsible for call control? A) Session Border Controller (SBC) B) Media Gateway C) OpenScape Voice (OSV) server D) Management Application Answer: C Explanation: The OSV server (also called Media Server) handles all call‑control functions such as call setup, teardown, and feature processing. Question 2. In OpenScape Enterprise architecture, which element separates signaling from media processing? A) SBC B) LDAP server C) OSV server D) DHCP server Answer: C Explanation: The OSV server isolates call‑control logic from media handling, allowing independent scaling of signaling and media. Question 3. Which protocol is used by OpenScape Enterprise for user directory look‑ups?
Specialist OpenScape Enterprise Practice Exam
A) SIP
B) LDAP
C) RTP
D) NTP
Answer: B Explanation: LDAP provides centralized access to user information for authentication and provisioning. Question 4. Which header in a SIP INVITE message indicates the desired media format? A) Via B) Contact C) Accept‑Contact D) SDP (Session Description Protocol) body Answer: D Explanation: The SDP payload inside the INVITE lists codecs, media types, and transport parameters. Question 5. What does DSCP stand for in QoS configuration? A) Dynamic SIP Call Priority B) Differentiated Services Code Point
Specialist OpenScape Enterprise Practice Exam
Answer: A Explanation: VMware ESXi (and Hyper‑V) are the primary supported hypervisors for OSV virtual machines. Question 8. Before installing OSV, which hardware parameter must be verified? A) Number of USB ports B) CPU core count and RAM size C) Video card compatibility D) Fan speed Answer: B Explanation: Sufficient CPU cores and memory are essential for handling call processing workloads. Question 9. Which VLAN tag is typically used for voice traffic in a segregated OpenScape Enterprise network? A) 10 B) 20 C) 30 D) 40 Answer: B
Specialist OpenScape Enterprise Practice Exam
Explanation: Best practice assigns a dedicated VLAN (e.g., VLAN 20) for voice to apply QoS policies separately. Question 10. Which certificate type is required for TLS‑secured SIP signaling? A) Self‑signed only B) CA‑signed X.509 certificate C) PGP key D) SSH key pair Answer: B Explanation: TLS requires a trusted X.509 certificate issued by a Certificate Authority. Question 11. During OSV installation, which interface is used for initial network configuration? A) Graphical User Interface (GUI) B) Command Line Interface (CLI) C) Web Services API D) SNMP manager Answer: B Explanation: The CLI provides low‑level access for setting IP address, subnet, and gateway during first boot.
Specialist OpenScape Enterprise Practice Exam
A) 404 Not Found B) 480 Temporarily Unavailable C) 403 Forbidden D) 500 Server Internal Error Answer: B Explanation: 480 means the destination cannot be reached at that moment (e.g., user offline). Question 15. In OpenScape Enterprise Manager, which object type is used to group users for shared feature access? A) Trunk B) Dial Plan C) Subscriber Group D) VLAN Profile Answer: C Explanation: Subscriber Groups allow administrators to assign common permissions and features. Question 16. Which protocol is used by OpenScape Enterprise to transport voice packets? A) SIP B) RTP
Specialist OpenScape Enterprise Practice Exam
C) HTTP
D) SNMP
Answer: B Explanation: RTP carries the actual audio stream after call setup via SIP. Question 17. What does SRTP provide? A) Signaling encryption only B) Media encryption and integrity protection C) Bandwidth throttling D) Call routing optimization Answer: B Explanation: Secure RTP encrypts voice payloads and adds authentication to prevent tampering. Question 18. Which feature allows a user to forward calls to another number when busy? A) Call Park B) Call Transfer C) Call Forward on Busy (CFB) D) Call Pickup Answer: C
Specialist OpenScape Enterprise Practice Exam
Question 21. Which log file contains detailed SIP transaction traces? A) /var/log/syslog B) siptrace.log C) /opt/osv/logs/cdr.log D) /etc/hosts Answer: B Explanation: siptrace.log records SIP messages and headers for troubleshooting. Question 22. In a one‑way audio problem, which component is most likely misconfigured? A) DNS server B) RTP stream path (firewall/NAT) C) LDAP directory D) DHCP scope Answer: B Explanation: One‑way audio usually stems from blocked RTP packets due to NAT or firewall rules. Question 23. Which command captures live SIP traffic on an OSV server? A) tcpdump - i eth0 port 5060
Specialist OpenScape Enterprise Practice Exam
B) ping 127.0.0. C) traceroute sip.example.com D) netstat - an | grep 5060 Answer: A Explanation: tcpdump with port 5060 captures SIP signaling packets for analysis. Question 24. What is the purpose of a feature code in OpenScape Enterprise? A) Define VLAN IDs B) Provide quick access to system functions (e.g., call park) C) Assign IP addresses to phones D) Encrypt media streams Answer: B Explanation: Feature codes are short dial strings that trigger specific telephony features. Question 25. Which protocol is used by OpenScape Enterprise to obtain IP addresses for endpoints? A) DNS B) DHCP C) NTP D) SNMP
Specialist OpenScape Enterprise Practice Exam
Question 28. Which feature allows a user to retrieve a held call from any extension within a group? A) Call Pickup B) Call Transfer C) Call Forward D) Call Park Answer: A Explanation: Call Pickup lets a user answer a ringing call on another extension within the same group. Question 29. What is the primary function of a Session Border Controller (SBC) in an OpenScape deployment? A) Store voicemails B) Provide security, protocol normalization, and NAT traversal for SIP trunks C) Generate call detail records D) Manage LDAP authentication Answer: B Explanation: SBCs protect the network perimeter and ensure SIP interoperability with external providers.
Specialist OpenScape Enterprise Practice Exam
Question 30. Which OpenScape Enterprise component is responsible for generating Call Detail Records (CDRs)? A) OSV server B) SBC C) DNS server D) DHCP server Answer: A Explanation: The OSV server logs all call events and produces CDRs for billing and analysis. Question 31. When configuring a SIP trunk, which parameter defines the remote SIP server’s listening port? A) Transport B) Remote‑Port C) Codec D) DSCP Answer: B Explanation: Remote‑Port specifies the destination port (usually 5060 or 5061 for TLS). Question 32. What does the “404 Not Found” SIP response indicate? A) The server is overloaded
Specialist OpenScape Enterprise Practice Exam
D) A DNS zone for SIP domains Answer: B Explanation: Hunt groups distribute incoming calls among a list of extensions using strategies like round‑robin or longest idle. Question 35. Which command backs up the OpenScape Enterprise configuration? A) backup create B) osv backup start C) system backup export D) os EM > Tools > Backup Answer: D Explanation: The GUI’s Backup tool exports the entire configuration database for later restoration. Question 36. Which protocol is used to retrieve system time from an NTP server? A) UDP port 123 B) TCP port 80 C) UDP port 53 D) TCP port 22 Answer: A
Specialist OpenScape Enterprise Practice Exam
Explanation: NTP operates over UDP port 123 to synchronize clocks. Question 37. What is the effect of enabling “TLS” on SIP signaling? A) Media is encrypted B) Signaling messages are encrypted and integrity‑protected C) Calls are routed faster D) SIP headers are stripped Answer: B Explanation: TLS encrypts the SIP message payload and protects it from tampering. Question 38. Which of the following best describes an “Automatic Call Distribution (ACD) group”? A) A set of trunks that share bandwidth B) A collection of agents that receive calls based on predefined rules C) A VLAN for voice traffic D) A DNS load‑balancing pool Answer: B Explanation: ACD groups queue incoming calls and distribute them to agents according to strategies like skill‑based routing.
Specialist OpenScape Enterprise Practice Exam
B) Provide user‑level security for feature activation (e.g., call forwarding) C) Assign IP addresses to phones D) Define VLAN IDs Answer: B Explanation: Access codes act as passwords for enabling or disabling certain telephony features. Question 42. Which of the following is a common cause of “503 Service Unavailable” during call setup? A) Invalid SIP URI B) Trunk capacity exhausted or SBC overloaded C) Incorrect codec negotiation D) DNS timeout Answer: B Explanation: 503 indicates the server cannot process the request, often due to resource exhaustion. Question 43. Which OpenScape Enterprise feature allows a user to temporarily store a call and retrieve it later? A) Call Forward B) Call Transfer C) Call Park
Specialist OpenScape Enterprise Practice Exam
D) Call Pickup Answer: C Explanation: Call Park places the call in a holding place identified by a park extension. Question 44. Which protocol is used by OpenScape Enterprise to resolve hostnames for SIP domains? A) DHCP B) DNS C) LDAP D) NTP Answer: B Explanation: DNS translates SIP domain names to IP addresses for routing SIP requests. Question 45. What does the “RTP” stream’s SSRC identifier represent? A) Source IP address B) Synchronization source identifier for a media flow C) Session timeout value D) Codec type Answer: B
