23.1 | List some advantages of the keepalive feature. |
A: | It is usually simpler to invoke the keepalive option than explicitly coding application probes; the keepalive probes take less network bandwidth than application probes (since keepalive probes and answers contain no data); no probes are sent unless the connection is idle. |
23.2 | List some disadvantages of the keepalive feature. |
A: | The keepalive option can cause a perfectly good connection to be dropped because of a temporary network outage ; the probe interval (2 hours) is normally not configurable on an application basis; |