The ________ operator in a query selects the records in which the field value is not equal to the value provided

All of the following are tips for professional e-mail etiquette EXCEPT ________

A) include a meaningful subject line B) use spell-checker and proofread before sending C) use abbreviations such as "u," "r," and "BRB" to keep the e-mail message shorter D) be concise and to the point

Which DiffServ DSCP assured values were defined to be backward compatible with IP priority values?

A) Assured Forwarding B) Class Selector C) Expedited Forwarding D) Traffic Class