Nt1330 Unit 3 Assignment 1

After you register a new domain name or when you update the DNS servers on your domain name, it usually takes about 12-36 hours for the domain name servers world-wide

I use most of the tools provided today to help protect my system. However, the tool that I have chosen to help protect my computer systems, and the data stored on it is using a strong password. Passwords are the first line of defense and are designed to limit, and help you protect unauthorized access to your computer. The stronger the password the more difficult it will be for hackers and malicious software to access your systems, in a way a strong password is the key to your life, it helps you protect your privacy and identity ideally, a password should be something that nobody can guess therefore,

"1) User should be able to click active heading or settings cog to be able to

i) Disk : file server, virtual disk server, feature on interest server and so on

GFS: Google File System is a distributed file system which is developed by Google in order to provide efficient, reliable access to data. . It is designed and implemented inorder to meet the requirements provided by Google’s data processing. The file system consists of hundreds of storage machines to provide inexpensive parts and it is accessed by different client machines. Here the search engine is providing huge amounts data that should be stored. GFS has 1,000 nodes with 300TB disk storage.

On Confais et al\cite{Confais} the authors evaluate through performance analysis three “off-the-shelf” object store solutions, namely Rados, Cassandra and InterPlanetary File

3. Consider a distributed file system that does client caching using write through. The system caches individual blocks, rather than entire files. Can the client in this system have a cache consistency problem? If so, suggest two possible solutions.

In this paper, traditional file storage method and achieve file distributed storage as well as fault-tolerant control using HDFS technology is been discussed.

Cloud computing is an internet based technology that provide services to existing users.Here the resources are in shared pool[1].Upon user requestition these resources are provided to users. The storage capacity, elasticity and rapid changes in dynamic environment. They provide good amount of storage capacity. The data stored in pool are in vast amount. The users can be requested any amount of data.

In GFS, files are extremely rarely overwritten, or shrunk. When these files need to be modified, it only adds append to those files.

Although the storage system can be used by various types of clients, we designed the system

The above figure shows how the data in hadoop is stored in racks and each rack consists of many distributed blocks of files, where each block is of 64Mb and can be written three times and at least one block is written to a different server rack for redundancy. In the above figure there are three different blocks ie, block1, block2, block3. Each block has been replicated at three different places and at least one replica should be placed in the different server rack for redundancy. In the figure above each block is having one of its replica placed in different rack.block1, block2, block3 are replicated both in rack1 and rack2 for data redundancy [5]. If the nodes in the rack1 have been damaged or

As today’s communications is hard to imagine without an internet and file transfers. One of the oldest protocols: File Transfer Protocol (FTP) lies as a foundation in transferring files, as the user interface to the protocol from remote sites over the internet. The main objective of FTP is sharing of files by encouraging implicit use of remote computers. The data is been transferred reliably and efficiently irrelevant to the number of host systems, file sizes and file types. FTP works over the architectures: the successful file transfer doesn’t depend upon the source and destination of the file. To ensure that there is no loss of data in the transferring; FTP uses reliable Transmission Control Protocol at transport layer. In recent years, graphical implementation of FTP is introduced to allow users for transferring the files using mouse clicks instead of commands. The biggest benefit of FTP is it can handle transferring of large files which cannot be done through E-mail systems. Therefore, the security aspect in the field of FTP has different perspectives from different available security protections that are present in real world. Similar to the HTTP protocol FTP also uses a single socket for both signaling and the actual data, but with a separate socket for download FTP uses an out-of-band control which is not featured by HTTP. FTP uses open data format, the data

Abstract: The new application you aspiration to style and execute is termed trivial file Update protocol (TFUP). The extensions represented here add conveniences to list and coordinate files between a region and remote host, furthermore to the popular browse and write operations provided by TFTP. To distinguish the comprehensive protocol from the Trivial File Transfer Protocol (TFTP), it will be mentioned as the Trivial File Update Protocol (TFUP). TFUP is correlate conservatory of TFTP as per RFC 783, as antecedently compulsory. The TFTP packet sorts and reliableness mechanisms area unit still gift. As such, the TFUP server retains talent with TFTP purchasers. Rsync will synchronise files between remote computers but depends on substantiation between the hosts, as will scp and rcp. TFUP lacks this, creating it supplementary trivial and suitable for applications everywhere authentication is not reasonable. I will supply a sketch of this application mutually with 2 state transition diagrams at the side of its functioning in Linux platform. To generate this code triple-crown i am aiming to preserve similar directories for each purchaser and server.

Once the user logs into the system with his/her credentials provided the server is started intitially and is waiting for the clients, it starts storing all the actions performed in a log called the “Event log” for the corresponding user session. It requires the user to run the Client login program every time of a new user wants to connect. The message sent by user hits the server first and the user makes it display on all the screen of all other users who are online. This is the main focus of our design and is implemented using the threading. Also, if a user logs off, all other users of the group will be notified of it and the logged off users loses access over the application. He has to login again to achieve a connection with the system once again.