...Solutions to Chapter 5 1. Explain the difference between connectionless unacknowledged service and connectionless acknowledged service. How do the protocols that provide these services differ? Solution: In an acknowledged connectionless network, reliable delivery can be achieved through the use of ACK and NAK transmissions. Such protocols are suited for communication over networks in which higher layers are sensitive to loss and the underlying network is inherently unreliable with a significant probability of loss or error. Unacknowledged networks provide simpler and faster communication for networks that are inherently reliable or provide service to higher layers that can tolerate information loss. 2. Explain the difference between connection-oriented acknowledged service and connectionless acknowledged service. How do the protocols that provide these services differ? Solution: The use of acknowledgments can provide reliable transfer over networks that are prone to error and loss. In connection oriented networks, every packet in a data flow travels on the same path through the network and the proper ordering of packets is guaranteed. In such networks, if a packet arrives out of order, the receiver immediately knows that a packet has been lost. In a connectionless network, the service needs a mechanism for dealing with unordered delivery of information. This is especially important for real-time or delay-sensitive traffic, which may require immediate retransmission and may not...
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...When you go off to college, you leave behind some important people in your life. I moved four hours away from my hometown and left my family and my friends behind. Sure, there were some tears shed, and I always said I’d come home to visit and make time for everyone, but turns out, not everyone wanted to make time for me. She and I became friends when we were sixteen. We hit it off immediately when she started working at the same grocery store as me. She had a car, so we’d always go out to dinner or drive around town looking for an adventure. We went to concerts together all the time. We’d drive hours to meet our favorite celebrities and watch them perform. We took each other to get tattoos and piercings. We did everything together. Then I left for college. Even if you don’t realize it, you’re so much busier in college. You can’t just drop everything and go to a concert or go to the movies, or go get a new tattoo. You’ve either got studying to do or you’re just too poor because you can’t work as much. If you have friends who aren’t in college, they don’t understand as much. Yeah, they’re probably busy working and doing their own thing, but they can’t truly understand because they’re not in your shoes. I tried my best to keep in touch with my friend for a while. Sure, there were times we’d go for a while without talking. At one point,...
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...Kendy S. Sumlin Mrs. Nettles English 0090 29 June 2014 Three advice I would give myself if I can go back in time Time is something most people don’t have much of these days. Time passes by so fast! People end-up making decisions that at the end, changes their lives. If I had the chance to visit myself back in time, it would be at sixteen years old. Teenagers think they know it all, just like I use to think. I’ve noticed that time is short, and my decisions affected my future. I would choose to visit myself at my house, sitting on the couch, when I would start talking to myself; advising myself on topics that impact life. If I would could have heard myself, my outcome would be different. At this age I started looking for advice, and unfortunately I didn’t find any. I would advise myself to first get a solid education, give myself time to find that special person, and lastly, not hold resentment. First advice would be to get a solid education. When I was sixteen, my dad gave a car to my older sister for her birthday. We both went to the same high school. My sister would skip school all the time, but hated to go by herself. She would take me on ride along with her. I really thought she was cool and anything she did was great. I looked up to her because she would do things that I was never allowed to do. Things took a turn when I became a young adult. Since I didn’t finish school, I ended up getting a low paying job. It is very hard to live on minimum wage when you have...
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...Back to Work! Will We Ever Get To Retire? This article talks about a woman named Martha Perry. Martha had worked hard for many years until she retired. She owned a small business, which she sold for around 1 million dollars. She figured from her investments and Social Security that she would be set for life. This was not at all what happened to her. When the stock market took a downward fall in 2008, so did her money. She went to her accountant who told her that her investments had lost half of their value. She was forced to go back to work. The severe recession has caused many elderly people to have to go back to work. I found this story to be really sad. Elderly people work for many years and deserve a break. They deserve to enjoy the last years of their lives. The Basics: Aging and the Elderly Life expectancy is the number of years people can expect to live. People tend to have higher life expectancies in higher income countries like the United States. We have higher life expectancies because of the industrial revolution. This revolution brought changes in agriculture, technologies, and factory manufacturing. Such as medicine advances and safer drinking water. Most Americans live to be around 70 or 80 years old. About 100 years ago, we only lived to be around 50 years old. Lower income countries tend to...
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...,We Cannot Go Back It is inevitable, everyone has done it. It is as much a part of the human condition as any of life’s endeavors. As in the poem I Go Back to May 1937 by Sharon Olds; we sometimes explore the idea of altering our fate through changing the past. What if we could change our fate, or even just ensure a better future for your off-spring? Each of us possesses genetic material that is built upon a code that makes every organism unique. The technology to alter our genetic make-up is getting closer by the minute. I am referring to The Human Genome Project. What is a genome and what is this project you ask? The National Institute of Health or NHI defines a genome as: A genome is an organism’s complete set of DNA, including all of its genes. Each genome contains all of the information needed to build and maintain that organism. In humans, a copy of the entire genome—more than 3 billion DNA base pairs—is contained in all cells that have a nucleus. Basically, it is a map of how our DNA is assembled. DNA is a compound that is and the NHI gives this definition of DNA, “DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA.” There are four kinds of DNA and depending on how they are arranged, defines your genetic make-up. This arrangement forms a map of sorts, and this map is the genome. Ever since DNA was discovered in 1953, scientists have wanted to make the human genome...
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...Sagrario Merejo ‘’ Bachata’’ The history of bachata is the history of the Dominican Republic. With the death of Rafael Trujillo in 1961, the music then often called Bolero campesino,” made its way to the capital of Santo Domingo along with a Multitude of countryside campensinos that had been living in squalor during The dictator’ s reign. Most of those familiar with the word “Bachata” know it is Popular musical genre from the Dominican Republic but before it came to be Used refer to a genre of music it meant “fiesta del patio” (party in the backyard) All friends, family get together to eat to have a good time. They drink and play guitar Music peacefully, but lets not forget the most important parts dancing. It was in the 1961 that bachata came to life with the voice of Jose Manuel Calderon He is call the “father of Bachata” butwhen Blas Duran came to along he simplified The music, making it easier for dancers and added electric guitar to this song “Consejos a las mujeres” and he became a huge hit, paving the road to bachata’s Acceptance by much wider segment of the population. Later Juan Luis Guerra A Dominican born, Berkley educated musician made bachata widely know and Accepted with his album “ Bachata Rosa”. Juan Luis Guerra is a master of music Although he is not regarded among bachata musicians as a true bachatero, he Did however play an important part...
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...MARTIN LUTHER KING JR. Have you ever wondered if you could go back in time and meet someone who has already come and gone, who would it be? If I was to go back in time to meet someone, I would meet Martin Luther King Jr. I would go and shake his hand and ask him how he was so successful in his accomplishments. Martin Luther King Jr. was the man who ended segregation and most racism. He was also the leader to the Montgomery Bus Boycott and the African-American Civil-Rights movement. I would go back because I would want to know how he was successful in his accomplishment. I would also go back because he would be able to tell us how he was a great leader. And last I would go back to say thank you for ending segregation. And now I’m going to tell you a little more why I would go back to meet Martin Luther King Jr....
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...say something back, but Bruno never heard it… despite the chaos that followed, Bruno found that he was still holding Shmuel’s hand and nothing in the world would have persuaded him to let go. “….he took hold of Shmuel’s tiny hand in his and squeezed it tightly. “You’re my best friend, Shmuel,” he said “My best friend for life.” Shmuel may have opened his mouth to say something back, but Bruno never heard it… despite the chaos that followed, Bruno found that he was still holding Shmuel’s hand and nothing in the world would have persuaded him to let go. “….he took hold of Shmuel’s tiny hand in his and squeezed it tightly. “You’re my best friend, Shmuel,” he said “My best friend for life.” Shmuel may have opened his mouth to say something back, but Bruno never heard it… despite the chaos that followed, Bruno found that he was still holding Shmuel’s hand and nothing in the world would have persuaded him to let go. “….he took hold of Shmuel’s tiny hand in his and squeezed it tightly. “You’re my best friend, Shmuel,” he said “My best friend for life.” Shmuel may have opened his mouth to say something back, but Bruno never heard it… despite the chaos that followed, Bruno found that he was still holding Shmuel’s hand and nothing in the world would have persuaded him to let go. “….he took hold of Shmuel’s tiny hand in his and squeezed it tightly. “You’re my best friend, Shmuel,” he said “My best friend for life.” Shmuel may have opened his mouth to say something back, but Bruno never...
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...time you saw me Is still burned in the back of your mind. You gave me roses and I left them there to die. So this is me swallowing my pride, Standing in front of you saying I'm sorry for that night, And I go back to December all the time. Turns out freedom ain't nothing but missing you, Wishing that I realized what I had when you were mine. I'd go back to December, turn around and make it all right. I go back to December all the time. These days I haven't been sleeping Staying up playing back myself leaving, When your birthday passed and I didn't call. And I think about summer, all the beautiful times I watched you laughing from the passenger side Realized that I loved you in the fall. Then the cold came, the dark days when fear crept into my mind. You gave me all your love and all I gave you was goodbye. So this is me swallowing my pride, Standing in front of you saying I'm sorry for that night. And I go back to December all the time. Turns out freedom ain't nothing but missing you, Wishing that I realized what I had when you were mine. I'd go back to December turn around and change my own mind. I go back to December all the time I miss your tan skin, your sweet smile, so good to me, so right, And how you held me in your arms that September night, The first time you ever saw me cry. Maybe this is wishful thinking, Probably mindless dreaming If we loved again I swear I'd love you right. I'd go back in time and change it but I can't So if...
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...while staying entirely in that confined area. Orders: Birthday, height, age, sign, clothes, eye color, sex (boy-girl-boy-girl), etc. Extensions up: Must completely start over if someone falls, can’t talk, can’t go over people. Extensions down: Only the person that fell must go back, students can talk Picture Frame Object: Students stand on a log in a square shape or confined surface and must arrange themselves in the given order while staying entirely in that confined area. Orders: Birthday, height, age, sign, clothes, eye color, sex (boy-girl-boy-girl), etc. Extensions up: Must completely start over if someone falls, can’t talk, can’t go over people. Extensions down: Only the person that fell must go back, students can talk Lord of the Rings Object: Students must walk on a wire from their tree to the tree across from them. There are any amount of trees and the wires converge on a ring in the center. There is a rope from one tree to another not across from it. Extensions up: Must completely start over if someone falls, can’t talk, must go back to starting tree when they fall, can’t go back once they make it across Extensions down: Only the person that fell must go back, students can talk, can come back and help once across, give them a pole, only need to go to the center. Whale Watch Object: Students stand on a platform teetering on a log. Get everyone on and off without it touching the ground. Get everyone on it to show them it can be done. Extensions up:...
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...that land because it's dangerous for them to go there and tells them to go to University Town. Bibi Nusrat also tells Najmah to go to New York with her, but Najmah fakes that she is sleeping because she doesn't want to go with her. Nur and Najmah feel like they have no choice, but to go back to the farm that has been there for generations in their family. Najmah and Nur decided not to go back to Golestan where their ancestors' have lived for many years. "'We have no choice but to return to Golestan,' says Nur quietly. 'Uncle or someone else surely will take our land if we don't go back....
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..."Back To December" I'm so glad you made time to see me. How's life? Tell me how's your family? I haven't seen them in a while. You've been good, busier than ever, We small talk, work and the weather, Your guard is up and I know why. Because the last time you saw me Is still burned in the back of your mind. You gave me roses and I left them there to die. So this is me swallowing my pride, Standing in front of you saying, "I'm sorry for that night," And I go back to December all the time. It turns out freedom ain't nothing but missing you. Wishing I'd realized what I had when you were mine. I'd go back to December, turn around and make it all right. I go back to December all the time. These days I haven't been sleeping, Staying up, playing back myself leavin'. When your birthday passed and I didn't call. And I think about summer, all the beautiful times, I watched you laughing from the passenger side. Realized I loved you in the fall. And then the cold came, the dark days when fear crept into my mind You gave me all your love and all I gave you was "Goodbye". So this is me swallowing my pride Standing in front of you saying, "I'm sorry for that night." And I go back to December all the time. It turns out freedom ain't nothing but missing you, Wishing I'd realized what I had when you were mine. I'd go back to December, turn around and change my own mind I go back to December all the time. I miss your tanned skin, your sweet smile, So good...
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...Gain a turn 13) Go back to starting point 14) Go back to starting point 15) Move 1 pace(s) forward 16) Move 3 pace(s) forward 17) Move 5 pace(s) forward 18) Move 7 pace(s) forward 19) Move 10 pace(s) forward 20) Move 20 pace(s) forward 21) Move 30 pace(s) forward 22) Move 40 pace(s) forward 23) Move 50 pace(s) forward 24) Move 3 pace(s) backward 25) Move 5 pace(s) backward 26) Move 7 pace(s) backward 27) Move 10 pace(s) backward 28) Move 20 pace(s) backward 29) Move 30 pace(s) backward 30) Move 40 pace(s) backward 31) Move 50 pace(s) backward 32) Gain 1 gold piece(s) from the treasure chest 33) Gain 5 gold piece(s) from the treasure chest 34) Gain 10 gold piece(s) from the treasure chest 35) Gain 20 gold piece(s) from the treasure chest 36) Gain 30 gold piece(s) from the treasure chest 37) Gain 40 gold piece(s) from the treasure chest 38) Gain 50 gold piece(s) from the treasure chest 39) Take all of the gold piece(s) from the treasure chest 40) Steal 1 gold piece(s) from your opponent 41) Steal 5 gold piece(s) from your opponent 42) Steal 10 gold piece(s) from your opponent 43) Steal 20 gold piece(s) from your opponent 44) Steal 30 gold piece(s) from your opponent 45) Steal 40 gold piece(s) from your opponent 46) Steal 50 gold piece(s) from your opponent 47) Steal all of your gold piece(s) from your opponent 48) Put back 1 gold piece(s) into...
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...Back to School Back to School Going back to school was a decision that took me a long time to make. Going back to school meant I will have to change my way of leaving and find a way to manage my family and work. Making my children proud of me was the biggest motivation to go back to school. Deciding to go back to school took a long time to decide which the right collage to attend was. I needed to look for a college that worked around my schedule and did not required me to go every day and still manage to go full time. When I heard about colleges that required attending only once a week and the rest of the time was online courses. Another thing that I had to look into was my financial situation. The military helped me facilitate my decision by helping me pay for my education. Researching colleges was harder than I thought. Every school I looked into was good some required more from me and did not worked with my scheduled. Once I conducted researched on University of Phoenix, I discovered that University of Phoenix was the best I found because it worked around my schedule. Many of my friends attend or attended University of Phoenix and were very successful. Seeing my friends have success motivated me to go back to school and attend University of Phoenix. Going back to school requires me to make time away from my family and friends. ...
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...Home Page Title Page LORD OF THE FLIES Contents Page 1 of 290 Go Back Full Screen Close Quit Home Page Title Page LORD OF THE FLIES Contents a novel by WILIAM GOLDING Page 2 of 290 Go Back G LOBAL V ILLAGE C ONTEMPORARY C LASSICS Full Screen Close Quit This e-book was set with the help of KOMAScript and LaTeX Home Page Title Page Contents Page 3 of 290 Go Back Full Screen Close Quit Home Page Contents 1 2 3 4 5 6 7 8 9 The Sound of the Shell Fire on the Mountain Huts on the Beach Painted Faces and Long Hair Beast from Water Beast from Air Shadows and Tall Trees Gift for the Darkness A View to a Death 5 42 65 80 106 Title Page Contents Page 4 of 290 Go Back 134 155 177 207 Quit Full Screen Close 10 The Shell and the Glasses 11 Castle Rock 12 Cry of the Hunters 221 Home Page 242 262 Title Page Contents Page 5 of 290 Go Back Full Screen Close Quit Home Page 1 The Sound of the Shell The boy with fair hair lowered himself down the last few feet of rock and began to pick his way toward the lagoon. Though he had taken off his school sweater and trailed it now from one hand, his grey shirt stuck to him and his hair was plastered to his forehead. All round him the long scar smashed into the jungle was a bath of heat. He was clambering heavily among the creepers and broken trunks when a bird, a vision of red and yellow, flashed upwards with a witch-like...
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