Question 1

COGNITIVE ASSESSMENT Which of the following are the two leading manufacturers of personal computer processor chips?

Accepted Answer

The two leading manufacturers of personal computer processor chips are Intel and AMD. Choice A is incorrect because Quad is not a manufacturer of computer processor chips. Choice B is incorrect because Xeon is a product line of Intel, not a separate manufacturer. Choice C is incorrect because Xeon is a product line of Intel, and AMD is a separate manufacturer, but not one of the two leading ones.

Question 2

COGNITIVE ASSESSMENT What are the roles of the control unit and the ALU?

Accepted Answer

The control unit directs the operations of the ALU by fetching instructions from memory, decoding them, and then directing the ALU to perform the necessary arithmetic or logical operations.

Question 3

Within the circuitry of a computer, each channel along which bits transfer allows the various devices both inside and attached to the system unit to communicate with each other. What are these channels called?

Accepted Answer

These channels are called "buses" in computer architecture, and they are responsible for transferring data between different components of a computer.

Question 4

Which of the following determines the number of bits that the computer can transmit at one time?

Accepted Answer

The bus width determines the number of bits that the computer can transmit at one time. The bus width is the number of parallel channels or wires that can carry data simultaneously.

Question 5

COGNITIVE ASSESSMENT What is unique about a multi-core processor?

Accepted Answer

A multi-core processor is a single chip that contains two or more separate processor cores, allowing for increased processing power and efficiency. Option B is incorrect, as it suggests multiple chips instead of multiple cores. Option C is incorrect as it refers to control elements and their effect on Internet data processing, which is unrelated to multi-core processors. Option D is incorrect as it refers to core memory, which is a type of RAM from the 1950s and not related to multi-core processors.

Question 6

Which of the following is true of a SCSI port?

Accepted Answer

A SCSI port is a high-speed parallel port used to connect peripherals like disk drives and printers, allowing for faster data transmission.

Question 7

COGNITIVE ASSESSMENT What are the four steps in the machine cycle?

Accepted Answer

The machine cycle consists of the following four steps: fetching, decoding, executing, and storing. Therefore, option D is the correct answer. Option A is incorrect because arithmetic calculations and comparison are part of the executing step. Option B is incorrect because controlling is not a step in the machine cycle, and pipelining is not one of the steps. Option C is incorrect because registering is not a step in the machine cycle, and cycling is not one of the steps.

Question 8

COGNITIVE ASSESSMENT What are three names for the electronic component that interprets and carries out the basic instructions that operate a computer?

Accepted Answer

The correct term is "central processing unit" (CPU), although "processor" and "central processor" are also commonly used to refer to this electronic component. Option A is incorrect because "analog interpreter" and "AI" are not accurate terms for the CPU. Option C has a partially correct term ("control processing unit" is not correct, it should be "central processing unit"), but also includes an incorrect term "processor" which does not provide enough detail. Option D is incorrect as "command processing circuit" is not a common term for the CPU.

Question 9

Which of the following is true of Bluetooth technology?

Accepted Answer

Bluetooth technology uses radio waves to wirelessly transmit data between devices, serving as an alternative to infrared data association (IrDA) which uses infrared light.

Question 10

For a wireless device to transmit signals to a computer via infrared light waves, both the computer and the device must have which of the following?

Accepted Answer

Both the computer and the device must have an IrDA (Infrared Data Association) port to transmit signals via infrared light waves.

Question 11

Which of the following is a special type of serial port that connects the system unit to a musical instrument, such as an electronic keyboard?

Accepted Answer

A MIDI (Musical Instrument Digital Interface) port is specifically designed to connect musical instruments like electronic keyboards to computers or other devices.

Question 12

COGNITIVE ASSESSMENT When your friend opened the case containing the electronic components of his computer, he saw the main circuit board for the computer. What is this circuit board called?

Accepted Answer

The main circuit board in a computer is commonly known as the "motherboard." It is the central hub that connects all the components of the computer, allowing them to communicate with each other.

Question 13

For a PC Card, which of the following is the appropriate bus?

Accepted Answer

The PC Card uses the expansion bus to connect peripheral devices to a computer, allowing for additional functionality.

Question 14

COGNITIVE ASSESSMENT Which of the following is true?

Accepted Answer

System units come in various shapes and sizes to accommodate different types of digital devices, such as desktops, laptops, and tablets.

Question 15

Which of the following is a device that plugs in a USB port on the system unit like the one in the accompanying figure and contains multiple USB ports in which users plug cables from USB devices?

Accepted Answer

A USB hub is a device that plugs into a USB port on the system unit and contains multiple USB ports in which users plug cables from USB devices.

Question 16

Which of the following is a device that plugs in a FireWire port on the system unit like the one in the accompanying figure and contains multiple FireWire ports in which users plug cables from FireWire devices?

Accepted Answer

The answer of  Which of the following is a...

Question 17

Which of the following is the component of the system unit that converts the wall outlet AC power into the DC power a computer requires?

Accepted Answer

The power supply is responsible for converting AC power from the wall outlet into DC power that the computer requires to function. Power surge, energy spotter, and electricity changer are not correct terms for this component.

Question 18

COGNITIVE ASSESSMENT If a computer advertisement states a computer operates at 5 GHz, what does that mean?

Accepted Answer

5 GHz refers to the clock speed of the computer, meaning the system clock can complete five billion clock cycles per second. It does not necessarily guarantee faster performance compared to a computer operating at a lower clock speed. It does not refer to the amount of RAM or the brand of the CPU.

Question 19

COGNITIVE ASSESSMENT If a dog is identified by scanning the shoulder or neck of the animal, what provides the information about the dog?

Accepted Answer

A chip implant is a small device inserted under the skin of the animal, typically in the shoulder or neck area, which can be scanned to provide information about the dog.

Question 20

COGNITIVE ASSESSMENT When you examine a computer chip under a microscope, what will you see?

Accepted Answer

When you examine a computer chip under a microscope, you will see integrated circuits, which are the tiny electronic components that make up the chip. The other options, such as silicon molecules and circuit boards, may also be present but are not the primary feature visible under a microscope. Quad cores are a type of processor and are not visible under a microscope.

Quiz 4: The Components of the Unit System