Switched Digital Video Overview and Components
What is the typical upstream channel width for data services using a 16 QAM modulation? Select one: a. 1.6 MHz b. 4.5 MHz c. 6 MHz d. 3.2 MHz
3.2 MHz
When an analog RF channel is converted to a digital RF 256 QAM channel, how much useable bandwidth does the QAM support for the operator? Select one: a. 42.88 Mbps b. 25.56 Mbps c. 10 Mbps d. 38.88 Mbps e. 3 - 5 Mbps
38.88 Mbps
Switched Digital Broadcast or SDV can free this much space of the video broadcast spectrum, allowing the MSO to add additional services for the subscriber. Select the best answer. Select one: a. 50 to 80% b. 10 to 20% c. 40 to 60% d. 30 to 70%
50 to 80%
What is the typical data rate for HD services? (the answers are in Mbps) Select one: a. 3.75 to 5.50 b. 5 to 9.5 c. 17 to 25 d. 8 to 20 e. 35 to 38.8
8 to 20
Analog services are replicated to be used in the digital spectrum, saving valuable bandwidth in the forward path. What is this process called? Select one: a. Routing b. Switching c. Broadcasting d. Simulcasting e. Narrowcasting
Simulcasting
Which piece of switched broadcast equipment assigns a program to a broadcast frequency? Select one: a. Narrowcaster b. Multiplexer c. Modulator d. Encoder e. Switching Server
Switching Server
Bandwidth requirements increase in the service group when these increase from the subscriber. Select one: a. Simulcasts b. SPTS c. Data Services d. Tunes e. QAMs
TUNES
How does SDV provide a solution to MSO bandwidth constraints? (Choose 3) Select one or more: a. Increases the number of services per QAM b. Un-viewed services are removed from the QAMs c. Switches only those services viewed d. Increases the number of physical QAMs in the forward path e. Increases the data rates for 6Mhz channels
a. Increases the number of services per QAM b. Un-viewed services are removed from the QAMs c. Switches only those services viewed
