4. The Medium Access Sub Layer Broadcast channels [or multi-access channels] are a category of networks and the key issue is how to determine who gets to use the channel when there is competition for it. The protocols which define these factors belong to a sub layer of data link layer called the MAC(medium access control)sub layer. ALOHA: Norman Abramson devised a new and elegant method to solve the channel allocation problem called the “ALOHA” system which used ground-based Radio broad
Premium Ethernet
Child labor Children are the future of a nation or it can perfectly be said that they are the soul of a nation they are the foundation of any country because they help in the nation building. But in today’s scenario Child labor has become an international issue. Today most of countries of the world facing child labor as an acute problem. It is a curse to the society.it does not only show the backwardness of a nation but it is against the humanity. children work in factories shops restaurant when
Premium Employment International Labour Organization Industrial Revolution
Desertification in the Sahelian Region of Africa Question 1 There are two schools of thought with respect to the underlying causes of “desertification” in the Sahelian region of Africa‚ the Eurocentric view (which blames desertification solely on the action of pastoral nomandists) and the Systems view (which blames desertification on the complex interaction of several factors including climate change and colonialism). This essay will define and describe both of these views. We will them discuss
Premium Sahara Africa Soil
influenced Africa in many ways‚ including religion and social development‚ through trade. Trade between Islam and Africa has long been a factor in African culture‚ economy‚ and politics. While Bantu people organized societies on the basis of African tradition‚ merchants from North Africa and southwest Asia introduced their Islamic faith to Africa. Islam arrived though two routes: it went to west Africa overland by trans-Saharan camel caravans‚ and it traveled to coastal east Africa over the sea
Premium Islam Africa Mali Empire
Ap History Unit 6 Essay When looking at the time period of 1450-1740‚ there were changes and continuities in China and Japan’s interaction with the West. China and Japan had continuous problems with Western Christian missionaries coming in and trying to convert. The Chinese and the Japanese also had many dilemmas with the Europeans’ interest in their products over time‚ especially when China and Japan started to get interested in silver. Some changes were that over time‚ the different methods
Premium People's Republic of China East Asia Japan
How Child Labor Has Changed During the late 1700s and early 1800s child labor was formed due to the increase of factories being built. While this not only meant an increase of jobs being formed‚ but this was also the start of a revolutionary thing. Today there are strict laws on the age at which children can now work‚ how long‚ and how much they get paid. While child labor still exists in the United States today it is much less common than it was all those years ago. In the past there were
Premium Employment Industrial Revolution United States
at Work: Child Labor or Child Care? I am a citizen of India. My soul wouldn’t be satisfy if I directly started saying something about this Pakistan child labor case. Everyone knows Pakistan is a struggling and developing country as is India and some other countries such as Bangladesh‚ Sri Lanka‚ Brazil‚ Nepal‚ and Mexico. When I read this case I thought a lot about it‚ then I tried to compare this situation with my Home Country. I didn’t see that much difference between Child labor in my country
Premium Childhood Developing country Developed country
How has the scramble for Africa affected Africans? Europeans have always been known to take over many territories. For example‚ the British have expanded their empire to Australia‚ Asia‚ and even the Americas. Although these changes have made what the world is today‚ nothing has changed more than Africa. Before Colonialism occurred‚ Africa traded with other parts of the world for centuries (RP #1). In the nineteenth century‚ the Europeans started to notice that Africa could be a “gold mine” for their
Premium Africa Colonialism Slavery
and communication (-1.6%).This shows a general decrease in its major contributors of its economy. The Gross Domestic Product (GDP) annual growth rate year on year slowed to 1.9 for the first quarter of 2013 from 2.5 the last quarter of 2012.South Africa is an export-based country as it is rich in natural resources .It is a leading producer of platinum‚ gold‚ chromium and iron. However ‚the volume of South African gold exports have fallen in each of the past six quarters. The impact of labour unrest
Premium South Africa Africa Gold