CSMA/CD is the only network technology that successfully supports connection admission control and quality of service.

Internet connectivity for a company is mission critical. The technician must be notified if the Internet router has failed. Which of the following is the BEST method to monitor this device?

A. SLIP B. SFTP C. SMTP D. SNMP

When an aggregate function is used, which clause divides the data into distinct groups?

a. SELECT b. FROM c. WHERE d. GROUP BY e. HAVING