21) Which of the following is an example of secondary storage? A) cache memory B) read-only memory C) hard disk drives D) random access memory E) virtual memory 22) ________ is a technology in which extra copies of data are stored on two or more hard drives to ensure that critical data is not lost. A) JBOD B) RAID C) SLED D) BIOS E) SPAN 23) A(n) ________ occurs if a read/write head for some reason touches one of the disks in a hard drive, leading to a loss of data. A) head crash B) click of death C) bad sector D) disk compression E) base isolation 24) Which of the following is a secondary storage technology that uses microchips to store information? A) cache memory B) virtual memory C) redundant array of independent disks D) solid state drive E) read-only memory 25) Which of the following is a valid observation regarding the difference between solid state drives and hard disk-based drives? A) Hard disk drives are typically faster than solid state drives. B) Solid state drives have no moving parts, while hard disk drives have both electronic and mechanical parts. C) Solid state drives are louder and less reliable than hard disk drives. D) Hard disk drives are more expensive than solid state drives. E) Hard disk drives use microchips to store data, while solid state drives use magnetic disks. 26) Data stored on disks is easier and faster to locate than data on magnetic tapes because ________. A) the data on disks is stored in binary form B) disks have larger and more efficient storage capacities C) disks have both mechanical and electronic parts D) magnetic tapes store data in tiny magnetic spots E) computers do not have to scan an entire tape to find a specific data file 27) A(n) ________ provides a hardware interface, such as plugs and sockets, for connecting to computers. A) input device B) Universal Serial Bus C) removable storage device D) motherboard E) port 28) Which of the following types of ports is used to transfer one bit at a time and hence, has the slowest data transfer rates? A) USB port B) parallel port C) IEEE 1394 port D) serial port E) ethernet port 29) Which of the following types of ports used to connect networks, is the most common standard for local area networks? A) ethernet port B) VGA port C) serial port D) parallel port E) USB port 30) Which of the following types of ports is used to connect printers to computers? A) serial ports B) HDMI ports C) parallel ports D) ethernet ports E) VGA ports