Question: Some systems are capable of multipoint conferencing with no MCU, stand-alone, embedded or otherwise. These use a standards-based H.323 technique known as "decentralized multipoint", where each station in a multipoint call exchanges video and audio directly with the other stations with no central "manager" or other bottleneck. The advantages of this technique are that the video and audio will generally be of higher quality because they don't have to be relayed through a central point. Also, users can make ad-hoc multipoint calls without any concern for the availability or control of an MCU. This added convenience and quality comes at the expense of some increased network bandwidth, because every station must transmit to every other station directly.
Try to answer this question if possible: What is a main disadvantage of using an MCU technique?
Answer: unanswerable
Question: The Republic of the Congo's sparse population is concentrated in the southwestern portion of the country, leaving the vast areas of tropical jungle in the north virtually uninhabited. Thus, Congo is one of the most urbanized countries in Africa, with 70% of its total population living in a few urban areas, namely in Brazzaville, Pointe-Noire or one of the small cities or villages lining the 534-kilometre (332 mi) railway which connects the two cities. In rural areas, industrial and commercial activity has declined rapidly in recent years, leaving rural economies dependent on the government for support and subsistence.
Try to answer this question if possible: Where has commercial activity increased rapidly?
Answer: unanswerable
Question: The unemployment rate reached its peak of 20% in 2005. Since then, it has decreased to 7% in 2013, which is only slightly above the national average. The decrease is caused on the one hand by the emergence of new jobs and on the other by a marked decrease in the working-age population, caused by emigration and low birth rates for decades. The wages in Thuringia are low compared to rich bordering Lands like Hesse and Bavaria. Therefore, many Thuringians are working in other German Lands and even in Austria and Switzerland as weekly commuters. Nevertheless, the demographic transition in Thuringia leads to a lack of workers in some sectors. External immigration into Thuringia has been encouraged by the government since about 2010 to counter this problem.
Try to answer this question if possible: What has lead to a surplus of workers in some sectors?
Answer: unanswerable
Question: Kurita's "Center Force" consisted of five battleships, 12 cruisers and 13 destroyers. It included the two largest battleships ever built: Yamato and Musashi. As they passed Palawan Island after midnight on 23 October the force was spotted, and U.S. submarines sank two cruisers. On 24 October, as Kurita's force entered the Sibuyan Sea, USS Intrepid and USS Cabot launched 260 planes, which scored hits on several ships. A second wave of planes scored many direct hits on Musashi. A third wave, from USS Enterprise and USS Franklin hit Musashi with 11 bombs and eight torpedoes. Kurita retreated but in the evening turned around to head for San Bernardino Strait. Musashi sank at about 19:30.
Try to answer this question if possible: How many cruisers were in Kurita's "Center Force"?
Answer:
12