Vodafone AYRRXpra bath MOE- ·ull D 1:14 am Active now EEET1089/1152 Network Serv

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Vodafone AYRRXpra bath MOE- ·ull D 1:14 am Active now EEET1089/1152 Network Services and In UNIVERSITY Lab 03- Quiz (B) (Duration: 15 min. Test type: Open book Total Score: 5% Student Name Student ID Choose only one answerl Write down your answer inside the ANSWER column. No. Aswer Question 1. In multicasting, a host uses the Internet Group Management Protocol (IGMP) to indicate a) it wants to receive multicast packages b) it wants to be assigned a multicast IP address ) it wants to have a better video quality ) noee of the above is right With IGMP version 3 a host a) can join a multicast group without sending any package b) can only leave a multicast group by sending a IGMP report message c) can always roceive the multicast packages. d) none of the above 3. In VBox, within the lab 3, when IGMP on demand is disable a) The administrator of VBox cannot control which channel to be streamed in the local network b) The administrator of VBox can control which channel to be streamed in the local network c) The user with VLC cannot request for a TV channel d) none of the above is right When VBOX scans for available DVB channels, it searches for a) multicast IPs b) a host that wants to receive the TV channel c) DVB carier frequencies d) none of the above is right For a given TV channel quality and a given fixed 7MHz DVB bandwidth, a broadcaster can have a) unlimited TV channels b) unlimited radio channels c) limited TV/radio channels d) none of the above is right In VBox, within the lab 2, when IGMP is disable a) Users with VLC cannot view any TV channel b) Users with VLC can control which TV channel can be stream to the local network c) All TV channels are streamed to the local network d) none of the above 64QAM is a) a video/audio decoding scheme for DVB b) a DVB center frequency with 64 MHz bandwidth c) a digital modulation scheme d) none of the above is right In multicasting, a router uses the Internet Group Management Protocol (GMP) to: a) select the next optimal route to forward the multicast packages b) to exchange the multicast routing information. c) check if there is a host in a certain subnet want to receive multicast packages d) none of the mentioned Each DVB broadcaster will be assigned a) the same carrier frequencies but with different bandwidths b) the same carrier frequencies and the same bandwidths 6. 8. e) different carrier frequencies IIJ OReply More Remix

Explanation / Answer

A) It wants to receive multicast packages B) can only leave a multicast group by sending any package B) the administrator of VBox can control which channel to be stream in the local network. B) a hast that want to receive the TV channel

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