Discuss the rsync utility and its benefits.
What will be an ideal response?
You can use the rsync (remote synchronization) utility to back up data from your SLES 11 system. The rsync utility is actually designed to create copies of entire directories across a network to a different computer. As such, rsync is an ideal tool to back up data across the network to the file system of a remote computer or to a locally connected USB drive.
It is important to note that rsync works in a very different manner than the other backup utilities we have been discussing. Instead of creating an archive file, rsync creates a mirror copy of the data being backed up in the file system of the destination device.
A key benefit of using rsync is that, when coping data, rsync compares the source and the target directory and transfers only data that has changed or has been created. Therefore, the first time rsync is run, all of the data is copied. Thereafter, only files that have been changed or newly created in the source directory are copied to the target directory.
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________ provide periodic updates of what is occurring in the business.
A) Performance reports B) Records C) Data capture reports D) Blank forms
Suppose that we want to store digitized audio information in a binary file. An audio signal typically does not change much from one sample to the next. In this case, less memory is used if we record the change in the data values instead of the actual data values. We will use this idea in the following program. Write a program StoreSignal that will read positive integers, each of which must be within 127 of the previous integer, from the keyboard (or from a text file, if you prefer). Write the first integer to a binary file. For each subsequent integer, compute the difference between it and the integer before it, cast the difference to a byte, and write the result to the binary file. When a negative integer is encountered, stop writing the file.
What will be an ideal response?
________ scheduling is appropriate for online transaction-processing systems.
a) FCFS b) SSTF c) C-LOOK d) none of the above
________ are displayed along the bottom of a column chart
A) Numeric labels B) Data markers C) Category labels D) Value labels