1. The first Internet-telephony software, Internet Phone, supported PC–to–PC and telephone-to-telephone voice calls via the Internet. a. true b. false

2. The current reliability and sound-quality problems of Internet telephony are attributable to limitations in Internet bandwidth and compression technology. a. true b. false

3. As a packet-switched or connectionless network, the Internet decreases the chances of packet loss for a voice call. a. true b. false

4. To date, most developers of Internet-telephony software and vendors of gateway servers have used the same speech-compression protocols. a. true b. false

5. The ITU has ratified a standard for voice, data, and video transmission over IP–based local area networks. a. true b. false

6. ITU's H.320 standard defines the protocols for transporting voice, data and video over: a. PSTN b. ISDN networks c. the public Internet

7. The G.723.1 specification for audio codecs, recommended by the VoIP Forum, requires: a. 6.3 kbps b. 7.9 kbps c. 8.4 kbps

8. Internet-telephony directories enable: a. users to determine other users' Internet addresses b. users to determine whether an Internet site is capable of receiving Internet-telephony transmissions c. Internet/PSTN Interoperability

9. In the near term, the market segment expected to be the biggest driver for VoIP telephony is: a. small-office/home-office (SOHO) customers b. military/government networks c. corporate intranets/extranets

10. The public Internet will be able to transport voice calls reliably and with high quality when: a. standards are established for Internet directories b. manufacturers produce higher-quality, lower-cost audiocodec technology c. various technologies deliver greater backbone-network and subscriber-access speeds