CCNP Collaboration and Training Exam Key
Concepts, Study Notes and Practice
CCNP COLLABORATION CERTIFICATION – COMPLETE Q&A BANK (200+
QUESTIONS)
EXAMS: 350-801 CLCOR, 300-815 CLACC, 300-820 CLHCT, 300-830 CLCCE
UPDATED VERIFIED ANSWERS WITH DETAILED RATIONALES
SECTION 1: CORE EXAM – 350-801 CLCOR (Questions 1-80)
1. Which protocol is primarily used for signaling in modern Cisco collaboration
deployments?
A) H.323
B) MGCP
C) SIP
D) SCCP
Answer: C
1
,Rationale: SIP (Session Initiation Protocol) is the primary signaling protocol for
modern Cisco collaboration deployments. H.323 and MGCP are legacy protocols;
SCCP is used for Skinny phones but not for inter-system signaling [citation:2].
2. A VoIP call experiences choppy audio. Which QoS issue is most likely the
cause?
A) Bandwidth
B) Jitter
C) Delay
D) Packet loss
Answer: B
Rationale: Jitter (variable delay between packets) causes choppy audio. Packet loss
causes gaps; delay causes echo; bandwidth causes throughput issues [citation:2].
3. Which Cisco component authenticates users and aggregates applications into a
single interface for collaboration access?
A) Cisco Unified CM
B) Cisco Unity Connection
C) Cisco Expressway
D) Webex Control Hub
Answer: D
2
,Rationale: Webex Control Hub provides centralized user management and
application aggregation for Cisco collaboration services [citation:3].
4. Which DSCP value is recommended for Cisco voice traffic?
A) AF41
B) EF (46)
C) CS3
D) BE (0)
Answer: B
Rationale: Expedited Forwarding (EF, value 46) is recommended for voice traffic
to ensure low latency and jitter [citation:2].
5. What is the purpose of Cisco Unified Border Element (CUBE) in a collaboration
network?
A) To provide voicemail services
B) To serve as a Session Border Controller between the enterprise and service
provider
C) To manage user profiles
D) To host collaboration applications
Answer: B
3
, Rationale: CUBE acts as an SBC at the demarcation point between the enterprise
network and service provider, providing security, normalization, and protocol
interworking [citation:2].
6. Which route pattern wildcard matches any single digit in Cisco Unified CM?
A) X
B) !
C) []
D) .
Answer: A
Rationale: The wildcard X matches any single digit. The exclamation mark (!)
matches any sequence of digits [citation:2].
7. What is the function of a Calling Search Space (CSS) in CUCM?
A) To define available partitions for a device or line
B) To control codec selection
C) To manage media resources
D) To configure SIP trunks
Answer: A
Rationale: A CSS determines which partitions a device or line can access for call
routing, enforcing class-of-service restrictions [citation:2].
4
Concepts, Study Notes and Practice
CCNP COLLABORATION CERTIFICATION – COMPLETE Q&A BANK (200+
QUESTIONS)
EXAMS: 350-801 CLCOR, 300-815 CLACC, 300-820 CLHCT, 300-830 CLCCE
UPDATED VERIFIED ANSWERS WITH DETAILED RATIONALES
SECTION 1: CORE EXAM – 350-801 CLCOR (Questions 1-80)
1. Which protocol is primarily used for signaling in modern Cisco collaboration
deployments?
A) H.323
B) MGCP
C) SIP
D) SCCP
Answer: C
1
,Rationale: SIP (Session Initiation Protocol) is the primary signaling protocol for
modern Cisco collaboration deployments. H.323 and MGCP are legacy protocols;
SCCP is used for Skinny phones but not for inter-system signaling [citation:2].
2. A VoIP call experiences choppy audio. Which QoS issue is most likely the
cause?
A) Bandwidth
B) Jitter
C) Delay
D) Packet loss
Answer: B
Rationale: Jitter (variable delay between packets) causes choppy audio. Packet loss
causes gaps; delay causes echo; bandwidth causes throughput issues [citation:2].
3. Which Cisco component authenticates users and aggregates applications into a
single interface for collaboration access?
A) Cisco Unified CM
B) Cisco Unity Connection
C) Cisco Expressway
D) Webex Control Hub
Answer: D
2
,Rationale: Webex Control Hub provides centralized user management and
application aggregation for Cisco collaboration services [citation:3].
4. Which DSCP value is recommended for Cisco voice traffic?
A) AF41
B) EF (46)
C) CS3
D) BE (0)
Answer: B
Rationale: Expedited Forwarding (EF, value 46) is recommended for voice traffic
to ensure low latency and jitter [citation:2].
5. What is the purpose of Cisco Unified Border Element (CUBE) in a collaboration
network?
A) To provide voicemail services
B) To serve as a Session Border Controller between the enterprise and service
provider
C) To manage user profiles
D) To host collaboration applications
Answer: B
3
, Rationale: CUBE acts as an SBC at the demarcation point between the enterprise
network and service provider, providing security, normalization, and protocol
interworking [citation:2].
6. Which route pattern wildcard matches any single digit in Cisco Unified CM?
A) X
B) !
C) []
D) .
Answer: A
Rationale: The wildcard X matches any single digit. The exclamation mark (!)
matches any sequence of digits [citation:2].
7. What is the function of a Calling Search Space (CSS) in CUCM?
A) To define available partitions for a device or line
B) To control codec selection
C) To manage media resources
D) To configure SIP trunks
Answer: A
Rationale: A CSS determines which partitions a device or line can access for call
routing, enforcing class-of-service restrictions [citation:2].
4
