n terms of block data and stream data, which of the following statements is true about video communications?Question 8Select one:Video communications becomes stream data only when there is associated audio. A video message or movie transferred as a file is block data, while video that is decoded and displayed continuously as it arrives is stream dataAll video communications is block dataAll video communications are stream data

Information transfers over networks are sometimes categorised into block/message services or streaming services. What category of service is video?Question 11Select one:It depends on whether the video is downloaded before play, or decoded and displayed as it is being receivedNeither a message nor streaming serviceA streaming serviceA message or block service

Which of he following statements is NOT true concerning streaming of video or audio over the Internet?Question 6AnswerAdaptive streaming requires that there should be multiple encoded versions of the same content available from the serverStreaming is characterised by the need to continuously receive, decode and render (or "play") a segment of the media within a fixed deadlineThe need to accommodate packet delay variation and packet loss can mean a long delay in the receiver due to bufferingProgressive Download requires the whole media file to be downloaded before playback can begin

Which of the following is the example of data communication?Select one:a.E-Mailb.Video streamingc.Audio streamingd.All of the mentioned

Which of the following statements is/are true concerning carriage of streaming services over networks?Question 2Select one or more:Streaming services may be carried over circuit-switched, packet-switched or virtual circuit switched networksStreaming services can only be carried in packet form if the network provides virtual circuit switchingStreaming services require separate network infrastructure; they cannot be carried over the same network as bursty data servicesStreaming services generate bits continuously and so cannot be carried over packet switched networks

Name the two forms Data can take interms of Communication?Question 4Answera.Audio and Analogb.Digital and Videoc.Analog and Digitald.Voice and Videoe.Data and Nkommo