Unit 3 Assignment 1 Bitwise Research Paper

4. Strong collision: given a message M1, it is not possible to find two distinct messages such that h (M1’) = h (M1). The probability of this collision is 2n/2. Hash function is used in message authentication which uses a secret code before hashing so that no one else can modify the message and hash and then can encrypt the message for confidentiality. There are several ways of applying hash for message authentication: 1.

These replicas to select the master use a consensus protocol. The files and directories present a Chubby cell is called nodes can act as a lock. Handles are created every time when a client open nodes, which are similar to UNIX file descriptors.

For example, CloudWatch Logs can track the number of errors that occur in the application logs and send a notification whenever the rate of errors exceeds a threshold. • CloudWatch Logs uses log data for monitoring; so, no code changes are required. • The CloudWatch Logs Agent makes it easy to quickly move both rotated and non rotated log files off of a host and into the log service. We can access the raw log event data whenever needed. • Amazon CloudWatch Logs lets to monitor and troubleshoot the systems and applications using the existing system, application and custom log files.

8. A person can obtain help with currant operating system by using the search online text box, using the help links, and using windows help and support. To use the help window, users can click the question mark on the upper right hand corner of the app window. Then drag the window title bar to were ever is most comfortable and click search online help engine and type in question. 9.

A MOTD banner is used to show users some type of message and is displayed before to the login banner. We will see how to configure these settings in the configurations below.

I will focus on Microsoft Exchange Server and it’s Databases (including their backup strategy with Symantec Backup Exec 2015 software) ,which I’m administering and maintaining here at the workplace. Differences between conducting differential and incremental backups When full backup is done it has copied all files, then subsequent backups in the middle of full copies period are referencing to the last full backup . The main difference between backup types is on their connection to the archive bit, as a file component which is activated when a file is created or changed and also shows whether the file has been backed up, when it was last modified. As we know a full backup resets the archive bit, which means that any files changed after that will be backed-up between that full backup and the next backup. In other hand, a differential backup backup only those files that had changes after the full backup, but it doesn’t reset the archive bit, which means it will copy again on the next schedule.

Mail clients are linked and our sent to the mail servers to deliver your emails you send across the internet. Firewall: Firewall is a piece of software on your computer. Firewall helps prevent software and malicious viruses trying to gain access to the computer from the internet or the network you’re connected onto, it helps by making sure the computer is safe by not allowing and avoiding unwanted items on your computer or network. M1: Web Architecture: Web 2.0: Web 2.0, is the new ways and methods of how people interact on the internet and communicate online. Examples of Web 2.0 which users would communicate and interact online: Blogs, Video/Audio, Social Media, Images & Pictures.

Proxy Server 5. Grid FTP Server - For moving data, used in simulations 6. DataDirect Network Storage -8 TB (Approx) of dedicated storage for "MATLAB on the TeraGrid" Could be increased or decreased after getting usage and user data. User and Cluster Model: User Desktop or the Client Machine will store matlab jobs on the local drive

Pfizer put in place a solid hierarchy approach and ground rules for usage of Electronic Case Files and Documentum. Each person at Pfizer has their own MySite, and the IT administration inspires co-workers to build and eliminate locations regularly as tasks continuously come and go. The key is communication. Pfizer constructs a written communication podium correlation format to help analyze approved tools. It also empowers character restoring through an on-screen site request wizard.

Which method does not involve password travel across the internet ? a) E commerce b) Manipulation system c) Challenge–response system d) Responce system Answer:c 8. In Assymmetric Encryption, a message encrypted with the Public Key only be decrypted with the receiver’s appropriate Private Key. Justify? a) Not true, the message can also be decrypted with the Public Key b) A so called “one way function with back door” is applied for the encryption c) The Public Key contains a special function which is used to encrypt the message and which can only be reversed by the appropriate Private Key d) The encrypted message contains the function for decryption which identifies the Private Key Answer:b 9.

If the issue was with a controller, it will be resolved at the end because all drivers will now have been replaced by drivers that are working properly with the controllers present on the motherboard of the computer. 4. Use Hotfixes Windows have many hotfixes available for USB device issues if you are a Windows 7 or Server 2008 user. You need to go to “Update Information” and select the right package according to the specific information of your operating system. The operating system will automatically install the update and you will just need to confirm the installation of the relevant fixing patch of the Windows.

The jobtracker assigns the tasks to the tasktrackers running on many slave nodes or on a cluster of machines. The tasktrackers send messages called heartbeats regularly to the jobtracker to update the status, such as alive, idle, busy, etc. If suppose a task fails or times out, or a node is dead, the jobtracker will re-schedule the tasks to run on available nodes automatically. HDFS component consists of a single namenode and multiple datanodes. The namenode maintains the metadata about the data present on each datanode.

Blended Windows validation is the most secure confirmation. SQL Server validation amid the confirmation secret key is not transmitted in the system messages encoded utilizing the Windows logo. Complex passwords:-Since it is intended to build conceivable passwords. Complexibility applies secret word, the new watchword are sure necessities to be met by no less than 8 characters, not the client name and secret word, date of conception, by 10 premise focuses and is incorporated in the little print. Limited permissions:-In SQL, we are going about as servers or databases, permitting the client can restrain testimony.

Featuring a complete file or directory that is composed of a file name, size, date modified, owner, group, and mode or attributes. $ Ls -l / etc i. Show all files and directory contents. This argument will cause the process run a little long, if the process will be terminated can use ^ c $ Ls -R / usr 10: Viewing the file type $ File $ File * $ File / bin / ls 11: Copying files a. Copying a file.