The Quiz: (Your score will be emailed to you within 1 business day (and will be kept confidential))

[S1] VoIP stands for 'Voice over IP'. Thus the voice media is always carried over IP, but signaling may be done via circuit switched means  -  False True

[S2] The difference between IP Telephony and VoIP is that IP Telephony media is not limited to Voice. The signaling however for both IP Telephony and VoIP is basically the same  -  False True

[S3] Jitter is the variation in packet loss  - FalseTrue

[S4] Diffserv  is a QoS technique, which enables treating packets differently on the fly, i.e. with Diffserv apriori agreement or/and resource reservation is not required  - False True

[S5] Even two circuit switched users using their POTS (Plain Old Telephone Service) phones may still be involved in a VoIP call  -  False True

[S6] RTP is the key media protocol for VoIP. Its brother protocol, RTCP, is the key signaling protocol for VoIP - False True

[S7] G.729 voice information is normally encapsulated by RTP, which is normally carried over UDP  -  False True

[S8] It is possible that two end points, A and B, will exchange voice media information such that one end point A will use G.729 to send its media to B, while (in the same session) B will use G.711 to send its media to A  - False True

[S9] SIP and H.323 end points need a gateway to exchange signaling, but can still exchange media directly with each other  - False True

[S10] In VoIP - bearer (media) and signaling are totally decoupled  - False True