Tài liệu Cisco Design Essentials: Cisco IP Telephony- Enterprise Voice Over Data Design Test doc

Cisco Design Essentials: Cisco IP Telephony￾Enterprise Voice Over Data Design Test

1) Which of the following statements are true of CallManager 2.4 multi-site WAN-distributed call processing?

a. A CallManager and MTP is required at each location

b. A Cisco IOS gatekeeper is required for admission control

c. A minimum of Cisco IOS gateway of IOS 12.0(6)T is required

d. G.711 only for all IP WAN voice calls

e. All of the above

f. B and D only

2) In ATM while a typical voice payload takes only 20 bytes of a 48-byte payload resulting in 28 bytes of padding,

efficiency is gained because the predictable fixed-length cells allow highly efficient switching that can be built into

chip design.

a. True

b. False

3) ____________________ is a technique for breaking up and re-assembling large data frames to avoid "freeze-out"

of delay-sensitive traffic in the network.

a. Traffic shaping

b. Committed access rate (CAR)

c. Fragmentation and interleaving

d. RSVP

4) Which of these statements are true about the IP WAN with centralized call processing using CallManager 2.4?

a. All local gateway access codes must be different