26 A) Random Access Memory, it is memory that can be reached by any subs within B) Readily Available Memory, it is the first level of memory used by the computer in all of its Random Access Memory: it is memory that is used for short-term temporary data storage D) Resettable Automatic Memory; it is memory that can be used and then automatically resto 28) What is the meaning of RAM, and what is its primary role? computer, any time. within the computer. 29 cleared, after being read from or written to 29) Which of the following is one of the basic characteristics of DRAM? A) DRAMs must be periodically refreshed in order to retain data B) DRAMs must have a constantly changing input. DRAMs have a broader "dynamic storage range than other types of memories D) DRAMs are simpler devices than other type memories 30) 30) Data on hard disks are organized as A) rows and columns banks and ranks B) tracks and sectors D) ranks and files 31) 31) A hard disk cylinder consists of A) all sectors on a single disk adjacent tracks on a single disk B) sequential sectors on a single disk D) corresponding tracks on multiple disks 32) 32) The hard drive latency period is defined as A) the time that it takes to spin down a hard drive for power off. B) the time that it takes a hard drive to switch from read mode to write mode. the time that it takes for the desired sector to spin under the head once the head is positioned. Dy the time that it takes a hard drive to spin up from Orpm to 3600 rpm. 33) 33) The simplest connection between a sending device and receiving device is A) a fiber optic cable B) a wire C) a shielded twisted pair D) a coaxial cable 34) 31) The most common type of coaxial connector is the A) BNC connector C) banana jack B) alligator clip D) stereo phono jack 35) 35) Conxial cable supports data rates up to about A) I GHz B) 25 MHz C) 500 MHz D) 5 GHz 36) The purpose of twisted pair cables is to minimize 36) A) data transmission rates B) cross-talk C) power dissipation D) cabling distances 37) Transmission of data through space without the use of connections between sending and receiving 37) systems is called A) line-of-sight communications B) sonar C) wireless communications D) full-duplex communications