The infection causes inflammation of the colon, resulting in pain in the left lower abdomen that might also be felt in the back. Other possible symptoms of diverticulitis include fever, constipation, nausea or diarrhea.
On the Internet, an autonomous system (AS) is the unit of router policy, either a single network or a group of network s that is controlled by a common network administrator (or group of administrators) on behalf of a single administrative entity (such as a university, a business enterprise, or a business division).
In very large internetworks, it is necessary to divide the internetwork into separate entities known as autonomous systems, as shown in Figure 1.9. An autonomous system (AS) is a portion of the internetwork under the same administrative authority. The administrative authority can be an institution or corporation but can also be defined by the use of a routing protocol such as OSPF.