Denna uppsats behandlar ämnet filöverföring i ett nätverk. Fokus för arbetet har varit att undersöka MTU:ns inverkan på överföringshastigheten vid filöverföringar baserat på vilket protokoll som används och storleken på filerna som överförs. I arbetet har ett flertal experiment genomförts som syftat till att utreda detta, samt att finna vilket protokoll som överlag presterar bäst baserat på omständigheterna för överföringen. Olika filöverföringsprotokoll, fildistributionsprotokoll, MTU:er samt filstorlekar har testats för att finna vad som resulterar i högst överföringshastighet vid filöverföring över ett Ethernetnätverk. Resultaten visar på att en hög MTU uppnår högst överföringshastighet vid överföring av stora filer, men att en standard-MTU fungerar bättre för att överföra mycket små filer..

The goal with this project was to achieve real-time synchronized video playback over the Internet, or in other words, that multiple clients play the same part of a video at the same time.The result shows how it is possible to build such a protocol, that gives a user experience that the video is synchronized between computers when playing a locally stored file, stream or video delivered using progressive download. This was achieved by designing, then role playing to find weaknesses, and at last implementing the protocols to see how they work in practice. By using such a protocol, it is possible to navigate and discuss around a video in for example a telephone conference, and be sure that everybody is looking on the same picture..

This paper describes how files and information can be shared in organisations and workplaces. We studied and compared the traditional file sharing in Microsoft Active Directory and the Social file sharing that comes with Microsoft SharePoint Sites. We used qualitative studies based on interviews with system administrators, management and by our own observations to acquire the necessary data. Using independent research, we were able to analyze the data and show the general difference between the traditional and the social file sharing systems. Social file sharing enables the user to easily store and share files in a flexible online environment.

SMTP, the current protocol for sending electronic mail (e-mail) over the Internet, has for many years suffered from several problems and limitations. When it was designed, well over twenty years ago, the requirements for e-mail were very different from those of today. A message was a text message in English, and both user and machine were explicitly named in the address. The protocol was not designed to transfer other types of messages, and no mechanism was included to verify the identity of the sender.In order to solve these shortcomings, a new e-mail protocol needs to be defined. This report specifies a basis for what such a protocol may look like.

The purpose of this paper has been to explore how Swedish users of the file-sharing software Direct Connect perceive their own situation and the file-sharing phenomenon. In addition to ascertain what attitudes prevail in the file-sharing culture and what knowledge file-sharers have regarding the relevant Swedish legislation. The questions central to my area of interest were: - Why do file-sharers use the program Direct Connect? - What knowledge do file-sharers have of the relevant legislation in Sweden? - What attitudes prevail in the file-sharing culture? - Is file-sharing behaviour affected by an individuals experience and/or level of knowledge? I compared the results of my survey with earlier surveys done. In addition I compared categories within the file-sharing group such as gender, age, experience and level of knowledge to determine if there were any patterns within or differences between the groups.

Songs from the Crypt: Mapping the Forces that Hinder the Digital Revolution of Music Distribution This paper seeks an explanation to the low market share growth of the commercial digital music distribution in Sweden. The analysis identifies a spectrum of obstacles that hinder the digital distribution technology from becoming the main form of music distribution in Sweden. These obstacles make the digital music distribution less favourable in comparison with physical distribution from the consumer?s point of view. The authors suggest that in order for the digital distribution of music to become competitive the digital product would either have to be developed further to offer more customer value or the so called a là carte retail model would have to be replaced by a subscription-based distribution model.

Abstract:Title: Engelska (Svenska)Number of pages: 40 (47 including appendix)Author: Carl StrandTutor: Göran SvenssonCourse: Media and Communication Studies CPeriod: Fall 2005University: Division of Media and Communication, Department of Information Science, Uppsala UniversityPurpose/Aim: The purpose of this essay is to analyze how young people, in the ages 18 to 25, relate to the subject of file sharing, and what their attitudes to this phenomenon are. I aim to describe how they use file sharing, their knowledge about it, how their usage have changed due to the new copyright law, what their stands are on the question of resource control and management on the Internet, and what they think of the future of file sharing.Material/Method: The method being used is a qualitative focus group interview model, used to investigate how young people look at the subject of file sharing. The results of the interviews is then applied to a theoretical framework based on thoughts of Denis McQuail, Lawrence Lessig concerning creativity, copyright, resource management and file sharing on the InternetMain Results: My conclusion is that the widespread file sharing habits of young people is not only caused by the temptation of getting free stuff, but of the lack of commercial and legal alternatives. Youths are willing to pay for media if the distribution is superior to the illegal file sharing alternative. They are a generation of young people that has grown up in a society where the tendency in many fields has been to make everything faster and more effective.

The Internet protocol of today has been used for over 20 years. A new version of the protocol has been developed to replace the old one. This is a direct result due to the explosive growth of the usage of the Internet. This follows by new demands which needs new solutions. This report brings up the old protocol IPv4, the new protocol IPv6 and shows what kind of changes that has been developed to meet the users demand.The report brings up two important aspects; internet security and mobility.

Computer Forensics investigations have become more and more common while investigating IT-related issues. From experience, hard disks, USB thumb, memory sticks contains information that might be useful. Computer Forensics is regulary conducted by Police, Customs, Tax investigators but also within private companies and organisations. However, there are areas within the storage device that are not part of the organisied structure that a file system gives. The reason for that might be that the information has been erased by intention, a virus destroyed the file system and so on.

Computer Forensics investigations have become more and more common while investigating IT-related issues. From experience, hard disks, USB thumb, memory sticks contains information that might be useful. Computer Forensics is regulary conducted by Police, Customs, Tax investigators but also within private companies and organisations. However, there are areas within the storage device that are not part of the organisied structure that a file system gives. The reason for that might be that the information has been erased by intention, a virus destroyed the file system and so on.

AbstractPurpose/Aim: To study how Piratbyrån argues for a free distribution of information and culture products and to find a possible ideological explanation for their argumentation.Method/Material: I have used a rhetorical analysis to study and describe Piratbyrån´s website, a website that promotes free distribution of information and culture products. I have done so to find out how Piratbyrån argues for a free distribution and to find out what ideological foundation their argumentation is based on.Main results: The main results of the study show that Piratbyrån uses a variety of rhetorical techniques depending on the subject and purpose of the analyzed text. Their main arguments both promote their own thesis and argue against the copyright industry. The main part of the argumentation is based on logical and factual arguments, but parts of it also rely on an emotional appeal to the reader?s heart in order to persuade.

Detta arbete handlar om nätverksfilsystemsprotokollen SMB/CIFS, SMB2 och NFSv3. Arbetet baseras på artikeln ?A New Network File System is Born: Comparison of SMB2, CIFS, and NFS? som skrivits av Steven M. French på IBM, Samba Team. I den artikeln saknas det prestandatester och därför känns det relevant att göra prestandatester för att få fram vilket protokoll som har högst hastighet med olika filstorlekar i Windowsmiljö.

The remotely operated underwater vehicles that the client develops have needs of different kinds of data channels. In order to minimize the need of physical cable between the control unit and a ROV, a multiplex protocol has been developed. The protocol has been designed with the aim of using the bandwidth of the transferring link as efficient as possible.The different kinds of data channels used during this thesis project is; RS232, RS485 and CAN. ROM and FIFO-memories have been used to be able to effectively manage the different data channels. All the reading and sending of these channels have been implemented in FPGA-technology, the coding is made generic so that it will be easier to add more channels to the system in the future.The multiplex protocol is a modified version of the method STDM and it is a proprietary protocol.

Forskningsfra?ga? Hur kan mobiltelefonen integreras i detaljhandelsfo?retags marknadsfo?ring?SyfteSyftet med va?r uppsats a?r att urskilja och analysera likheter och olikheter mellan fo?retag och konsumenter ga?llande marknadsfo?ring med sto?d av mobiltelefonen. Detta go?r vi genom att klarla?gga:Konsumenters upplevda va?rde via mobiltelefonenFo?retags anva?ndning av mobiltelefonen som marknadsfo?ringsresurs  MetodUppsatsen har baserats pa? en kvalitativ studie som kommit att anta en deduktiv ansats med inslag av induktion. Vi har gjort den empiriska insamlingen genom semistrukturerade intervjuer da?r vi valt att intervjua tre va?lka?nda fo?retag inom detaljhandelsbranschen samt fokusgrupper.SlutsatsVa?r analys visar att mobiltelefonen kan integreras i detaljhandelsfo?retags marknadsfo?ring pa? olika sa?tt.

 The aim of this essay is to examine if the Swedish Major labels are moving towards making their catalogue available on different platforms rather than their traditional distribution of music. The new technology has really stirred things up for the major labels and file-sharing has been a problem for a long time. The labels have a history of fighting new formats instead of embracing them and listen to what their consumers actually want. We have found that the majors now are in the leading edge of music distribution due to technology and that is a first. We have focused this essay on if the consumption of music has changed the distribution of it or the other way around and found that people have changed their ways of consuming music over the years and the labels have always been forced to adapt.