Exam 4: The Components of the Unit System

COGNITIVE ASSESSMENT When 8 bits are grouped together as a unit, how many individual characters can these 8 bits represent?

Which of the following cards converts computer output into a video signal that travels through a cable to the monitor, which displays an image on the screen?

A microsecond is one-trillionth of a second.

COGNITIVE ASSESSMENT When someone reads a research paper about computers and runs across the term, bit, to what is the paper referring?

COGNITIVE ASSESSMENT What educational plan for computers does the United Nations endorse?

Which of the following is true of a SCSI port?

COGNITIVE ASSESSMENT What is the term for an electrical channel within the circuitry of a computer than can transfer 8 bytes of data at a time?

COGNITIVE ASSESSMENT Which of the following describe computer memory?

Critical Thinking Questions Case 4-2 Ports and connectors have always been a little bit of a mystery to you, so you have decided to learn more about them. You have a new wireless headset that you plan to connect to your smart phone. Which of the following types of headsets do you have?

COGNITIVE ASSESSMENT Memory access times can be measured in fractions of a second. When measuring memory access times, which of the following is the fastest?

The case of the system unit is made of metal or plastic and protects the internal electronic components from damage.

Buses transfer bits from input devices to memory, from memory to the processor, from the processor to memory, and from memory to output or storage devices.

Critical Thinking Questions Case 4-1 In your role as a consultant for people buying new computer systems, you always work hard to stay abreast of the latest RAM guidelines for the various levels of users. Another client used to just use standard application software in the past but with the purchase of a new computer, he expects to start creating Web sites, playing Internet games, and participating in video conferences. Which of the following configurations would be a good match for his new anticipated needs?

In the past, installing an adapter card like the one in the accompanying figure was not easy and required users to set switches and other elements on the motherboard.

COGNITIVE ASSESSMENT A computer technician told your friend he needed a circuit board that provides a connection to a peripheral device for use with his computer. What category of circuit board should your friend purchase?

Processors that use pipelining are slower because they have to wait for one instruction to complete the machine cycle before fetching the next.

Critical Thinking Questions Case 4-2 Ports and connectors have always been a little bit of a mystery to you, so you have decided to learn more about them. You are looking for a port that will allow a system unit to have the capability of recording sounds that have been created by a synthesizer and then processing the sounds to create new sounds. Which of the following ports satisfies this requirement?

Double Data Rate SDRAM (DDR SDRAM) chips are even faster than SDRAM chips because which of the following is true?

ExpressCard modules are the next generation of PC Cards.

The speed of the system clock is one of the factors that influences a computer's performance.