Browsing Faculty of Technology, Art and Design by Issue Date
Now showing items 1-20 of 1234
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Virtual user simulation
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)This project is about human–computer interaction, consisting of two parts. The first part is to analyze human behavior through the observation of machine/system behavior – solely through network traffic. By observing ... -
Predicting TCP congestion through active and passive measurments
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)The Transmission Control Protocol (TCP) has proved to be a reliable transport protocol that has withstood the test of time. It is part of the TCP/IP protocol suite deployed on the Internet, and it currently supports a ... -
Evaluation of file access control implementations
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)This thesis discusses two implementations of file access controls: the UNIX Permissions (UP) and the Access Control List (ACL). We will evaluate advantages and weaknesses in these two implementations. The criteria ... -
Administration of remote computer networks
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)Today's computer networks have gone from typically being a small local area network, to wide area networks, where users and servers are interconnected with each other from all over the world. This development has gradually ... -
Comparison of NFS, Samba and AFS
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)By making use of a distributed file system, users of physically distributed computers are allowed to share data and storage resources. This paper compares three distributed filesystems: the Sun NFS filesystem, Samba and ... -
User survey of practices using cfengine
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)This Master thesis is the final project at Oslo University College which is a part of the international Master degree in Network and system administration, in collaboration with the University of Oslo. This thesis includes ... -
Passive traffic characterization and analysis in heterogeneous IP networks
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)In this thesis we revisit a handful of well-known experiments, using modern tools, to see if results yielded from earlier experiments are valid for today’s heterogeneous networks. The traffic properties we look at are ... -
Traffic classification with passive measurement
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)This is a master thesis from a collaboration between Oslo University College and Uninett Research. Uninett have a passive monitoring device on a 2.5 Gbps backbone link between Trondheim and Narvik. They uses measurement ... -
Retrivability of data in ad-hoc backup
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)This master thesis looks at aspects with backup of data and restore in ad-hoc networks. Ad-hoc networks are networks made between arbitrary nodes without any form of infrastructure or central control. Backup in such ... -
High speed network sampling
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2005)Classical Sampling methods play an important role in the current practice of Internet measurement. With today’s high speed networks, routers cannot manage to generate complete Netflow data for every packet. They have ... -
Traffic characteristics and queueing theory : implications and applications to web server systems
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)Businesses rely increasingly on Internet services as the basis of their income. Downtime and poor performance of such services can therefore be directly translated into loss of revenue. In order to plan and design services ... -
Monitoring Changes in the Stability of Networks Using Eigenvector Centrality
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)Monitoring networks for anomalies is a typical duty of network operators. The conventional monitoring tools available today tend to almost ignore the topological characteristics of the whole network. This thesis takes a ... -
Wireless security and user attitude in SOHO environments
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)Wireless telecommunications networks have been one of the outstanding success stories over the last decade or so. Wireless Local Area Networks (WLANs) are reaching the same success in a very short time.[1] Corporate and ... -
Predicting performance and scaling behaviour in a data center with multiple application servers
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)As web pages become more user friendly and interactive we see that objects such as pictures, media files, cgi scripts and databases are more frequently used. This development causes increased stress on the servers due ... -
Management of high availability services using virtualization
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)This thesis examines the use of virtualization in management of high availability services using open source tools. The services are hosted in virtual machines, which can be seamlessly migrated between the physical nodes ... -
Epidemic network and centrality
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)This project is about epidemics spreading in computer networks and the issue of node centrality. The aim of such analysis is to investigate the rate of infection and information spreading in the network, to find the most ... -
High-level load balancing for web services
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)A structured approach to high availability and fault tolerance is essential in a production-grade service delivery network, where delays and faults can occur for a multitude of reasons. In this thesis, we consider the ... -
Generating synthetic VoIP traffic for analyzing redundant OpenBSD-Firewalls
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)Voice over IP, short VoIP, is among the fastest growing broadband technologies in the private and commercial sector. Compared to the Plain Old Telephone System (POTS), Internet telephony has reduced availability, measured ... -
Exploring 3-dimentional visualization of the data sets collected by cfEngine
(Høgskolen i Oslo. Avdeling for ingeniørutdanningUniversitetet i Oslo, 2006)cfEngine or Configuration Engine is an administration tool used to configure and maintain computer systems. There is a part of cfEngine that is responsible for collection of information about systems’ state. As a result, ... -
Digitalized story making in the classroom : a social semiotic perspective on gender, multimodality and learning
(Lillehammer University College, 2007)The article takes the case of pupils in a fifth-year primary school class (10-11 years old) who use text and pictures in their creative writing on the classroom computers. The study confirms what the research ...
