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

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

1) CallManager 3.0 will support transcoding. This allows call legs with different encodings (for example, G.711 and

G.729a) instead of the current requirement that a call have the same encoding from end to end.

a. True

b. False

2) For LFI, when using FRF.12 the fragments are reassembled at the other end of the circuit; however, if

fragmented on an IP interface with maximum transmission unit (MTU) reduction, the fragments remain for the life of

the packet.

a. True

b. False

3) For IP Telephony the recommended admissions control tool is:

a. RSVP

b. Manual intervention using access lists

c. Appropriate network deployment following known success guidelines

4) Nortel uses "nB+D" to refer to:

a. Their ISDN support, that is, both BRI and PRI

b. Use of a single D channel to support multiple voice channels

c. A marketing slogan "no Better Data" for their data products

d. Another name for Nortel ISL

5) The only standards-based signaling between a PBX and voicemail is _____.