?What option can be added to the rpm command to upgrade a specified package only if an older version exists on the system?

Lisa, a network technician, needs to introduce a few more cables to the existing patch panel. Which of the following tools would she use?

A. OTDR B. Multimeter C. Punch down tool D. Temperature monitor

Queue method________inserts an item at the tail of the queue.

a) enqueue. b) insert. c) put. d) None of the above.