... separate interface from the voice channels. a. True b. False Grade Cisco Design Essentials: Cisco IP Telephony- Enterprise Voice Over Data Design Test 1) Which of the following ... 10) In carrying Voice over Data, how is voice quality affected by tandem switching? a. It improves b. It stays the same c. It degrades 11) With the current Cisco IP Phone, if you lose ... workaround? a. Use two PVCs, one for voice and one for data b. IP MTU reduction c. Either, with caveat d. Neither, in any case 26) In implementing Voice over Data networks, in all likelihood...