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By 15:50 UTC, Facebook's domains had expired from the caches in all major public resolvers. A little before 21:00 UTC, Facebook resumed announcing BGP updates, with Facebook's domain name becoming resolvable again at 21:05 UTC. [14] On October 5, Facebook's engineering team posted a blog post explaining the cause of the outage.
The social network went offline for more than five hours on Monday.
The collapse was so widespread that Facebook employees couldn’t communicate with each other using the company’s internal chat app, while others were unable to open doors on the Facebook campus.
Program comprehension (also program understanding or [source] code comprehension) is a domain of computer science concerned with the ways software engineers maintain existing source code. The cognitive and other processes involved are identified and studied. [1] The results are used to develop tools and training. [2]
Software maintenance is the modification of software after delivery. Software maintenance is often considered lower skilled and less rewarding than new development. As such, it is a common target for outsourcing or offshoring. Usually, the team developing the software is different from those who will be maintaining it.
The Governor's School for International Studies is an academic summer program for gifted junior and senior high school students in Tennessee. It is a selective program located at the University of Memphis in which students study two political sciences, a foreign language, and an elective of their choice from the international studies curriculum.
And efforts like this program could help grow U of M’s undergraduate enrollment in the long run, as more students transfer to the university from community colleges, and the retention rate improves.
When major maintenance such as patching is performed, a backup is recommended as the first step in case the update fails and reversion is required. Disk cleanup may be performed as regular maintenance to remove these. Files may become fragmented and so slow the performance of the computer.