1. Which of the following describes the technique of digitizing analog voice?
a. Private Branch Exchange
b. Public Switched Telephone Network
c. Pulse Code Modulation
d. Queuing
e. Voice shaping
2. PSTN networks can scale up to only several hundred users.
a. TRUE
b. FALSE
3. Which of the following is NOT a PSTN service?
a. Call center services
b. Virtual private voice networks
c. Interactive voice response
d. Videoconferencing
e. Voice mail
4. Which modern Cisco router family integrated data and media collaboration features?
a. ISR
b. ISP
c. ASA
d. IPS
e. ISA
5. PSTN systems route voice calls based on a numbering plan, a process similar to IP routing based on IP addresses.
a. TRUE
b. FALSE
6. What are the four components of the IP Telephony concept?
a. Load balancers
b. Applications
c. Call processing nodes
d. Voice-enabled infrastructure
e. Content engines
f. Voice endpoints
7. IP Telephony-enabled workstations are also called:
a. PSTN devices
b. PBX
c. Routers
d. Softphones
e. Voice appliances
8. What is the name of the Cisco call processing solution?
a. Cisco Unity
b. Cisco Communications Manager (CallManager)
c. Cisco IVR
d. Cisco PBX
e. Cisco ASA
9. What is the name of the Cisco VoIP messaging solution?
a. Cisco Unity
b. Cisco Communications Manager (CallManager)
c. Cisco IVR
d. Cisco PBX
e. Cisco ASA
10. Cisco IP phones can be powered via Ethernet connection using which of the following features on Catalyst switches?
a. Port Channel
b. PBX
c. RIP
d. SDM
e. PoE
f. None of the above; Cisco IP phones cannot be powered via Ethernet connections
11. Single-site IP Telephony design involves a distributed call processing model.
a. TRUE
b. FALSE
12. Which of the following are reasons for using a Cisco CallManager cluster implementation (choose two)?
a. CallManager solutions can only be implemented using clusters
b. Improved redundancy
c. Support for IP phone registration
d. Call processing load sharing
13. Which of the following IP Telephony deployment models is suitable for large organizations with many sites?
a. Multisite distributed design
b. Single-site design
c. CallManager Express design
d. Dual-site design
14. The Cisco CallManager Express design model is suitable for small companies with few users.
a. TRUE
b. FALSE
15. Which of the following are protocols used strictly in IP Telephony solutions (choose all that apply)?
a. RIP
b. SCCP
c. CDP
d. H.323
e. NTP
f. MGCP
16. Which of the following voice codecs provides the highest level of voice quality?
a. G.711
b. G.723
c. G.729
17. Which of the following techniques can be used to save bandwidth by suppressing silent portions in voice calls?
a. STP
b. CAC
c. VAD
d. NTP
e. SCCP
18. What is the most important category of voice control issues (choose two)?
a. Insufficient use of bandwidth
b. No voice mail access
c. Packet loss
d. Packet delay
19. Which of the following are types of delay that exist in a voice-enabled network (choose all that apply)?
a. Queuing delay
b. Phone delay
c. Serialization delay
d. Propagation delay
e. Gateway delay
f. Processor delay
g. PBX delay
20. Which of the following QoS queuing techniques is best suited for voice traffic prioritization when combined with data traffic?
a. CQ
b. CBWFQ
c. LLQ
d. FIFO
e. WFQ