Which of the following is a session layer protocol?

Users are reporting their network is extremely slow. The technician discovers pings to external host have excessive response times. However, internal pings to printers and other PCs have acceptable response times. Which of the following steps should the technician take NEXT?

A. Determine if any network equipment was replaced recently B. Verify malware has not disabled the users' PC firewalls C. Replace users' network cables with known-good network cables D. Power cycle the web server

Which of the following statements about expressions is false?

A. An expression is a sequence of operands and operators. B. Expressions always reduce to a single value. C. A complex expression contains more than one operator. D. If two operators with the same precedence occur in a complex expression, the precedence rules determine the order of evaluation. E. There are six expression categories.