Question 1

COGNITIVE ASSESSMENT Last night, you experienced a power increase that lasted for less than one thousandth of a second. What is the term for this?

Accepted Answer

A "spike" refers to a sudden, brief increase in voltage or power, typically lasting for a very short duration, such as less than one thousandth of a second.

Question 2

COGNITIVE ASSESSMENT What is the technology featured in the trend known as the Internet of Things?

Accepted Answer

The Internet of Things (IoT) involves embedding computers and sensors in everyday objects to enable them to collect and exchange data.

Question 3

COGNITIVE ASSESSMENT A type of computer usually has thousands of users. Which of the following is most likely to be the type of computer?

Accepted Answer

Supercomputers are designed to handle extremely large numbers of users and complex computations, often serving thousands of users simultaneously in research, scientific, and industrial applications.

Question 4

COGNITIVE ASSESSMENT You want to connect your mobile device to a speaker. Which of the following is a way to do so?

Accepted Answer

Connecting a mobile device to a speaker can be done via a port, such as a headphone jack or USB port.

Question 5

COGNITIVE ASSESSMENT You are looking for a port that will work for an audio device. Which of the following is likeliest to work?

Accepted Answer

HDMI (High-Definition Multimedia Interface) is designed to transmit both audio and video signals, making it suitable for connecting audio devices.

Question 6

COGNITIVE ASSESSMENT Which of the following items in your pocket uses NFC technology?

Accepted Answer

NFC (Near Field Communication) technology is commonly used in credit cards for contactless payments.

Question 7

COGNITIVE ASSESSMENT Your new home has a vacuum system. What kind of computer is controlling it?

Accepted Answer

An embedded computer is a computer that is designed to perform a specific task within a larger system. In this case, the embedded computer is controlling the vacuum system in the new home.

Question 8

COGNITIVE ASSESSMENT If you are looking to use a Bluetooth device and do not want to extend its range with additional equipment, which of the following is the approximate distance you can expect between your device and the device with which it is transmitting data?

Accepted Answer

Bluetooth devices typically have a range of about 33 feet (10 meters) without additional equipment to extend the range.

Question 9

COGNITIVE ASSESSMENT You are looking for a general-purpose port to connect two devices together. Which of the following is your best bet?

Accepted Answer

Thunderbolt is a general-purpose port that can be used to connect two devices together. It is a high-speed port that can transfer data at speeds of up to 40 Gbps. Thunderbolt is also compatible with other types of ports, such as USB-C and DisplayPort.

Question 10

COGNITIVE ASSESSMENT Which of the following may need to happen before your Bluetooth headset can communicate with your smartphone?

Accepted Answer

Bluetooth devices need to be paired before they can communicate with each other. Pairing establishes a trusted connection between the devices.

Question 11

COGNITIVE ASSESSMENT A type of computer usually has only one user. Which of the following is most likely to be the type of computer?

Accepted Answer

A personal computer is typically designed for use by one person at a time, making it the most likely type of computer to have only one user.

Question 12

COGNITIVE ASSESSMENT You have purchased a surge protector and you are happy with it, in part because it has an appropriate Joule rating. What is that rating?

Accepted Answer

A surge protector with a Joule rating of 600 is considered appropriate for protecting electronic devices from power surges, as it can absorb a higher amount of energy compared to lower ratings.

Question 13

COGNITIVE ASSESSMENT When an instrument in the dashboard of your car informs you the air pressure in the right rear tire is low, what type of computer determines the air pressure is low?

Accepted Answer

An embedded computer is a specialized computer system that is part of a larger device, such as a car, and is used to perform specific tasks like monitoring tire pressure.

Question 14

COGNITIVE ASSESSMENT You are outside in a public park with your friend. Both of you have Wi-Fi devices. For the devices to communicate with each other, what is the maximum distance they can be apart?

Accepted Answer

Wi-Fi devices typically have a maximum range of about 300 feet in open areas without obstructions.

Question 15

COGNITIVE ASSESSMENT Your electric service has been failing with some frequency lately because of a lot of storms, and you are looking for more peace of mind when it comes to a reliable power source for your computer. Which of the following could help?

Accepted Answer

A UPS (Uninterruptible Power Supply) provides backup power to your computer during electrical outages, ensuring a reliable power source.

Question 16

COGNITIVE ASSESSMENT You are inside a sports arena with your friend. Both of you have Wi-Fi devices. For the devices to communicate with each other, what is the maximum distance they can be apart in this closed space?

Accepted Answer

The answer of COGNITIVE ASSESSMENT You are inside a sports...

Question 17

COGNITIVE ASSESSMENT You keep hearing a colleague of yours use a term and you are unfamiliar with it. Ultimately, however, you realize that it is a synonym for the term port. What is it?

Accepted Answer

A "jack" is a common synonym for "port," both referring to a socket or connection point for plugging in devices or cables.

Question 18

COGNITIVE ASSESSMENT You have just designed a device-tracking app for sale in the app marketplace. Which of the following are you least likely to use in your app?

Accepted Answer

UNIX is an operating system, not a technology typically used for tracking devices in an app. GPS, Wi-Fi, and IP addresses are more relevant for location and tracking purposes.

Question 19

COGNITIVE ASSESSMENT You need a version of USB technology that will support older USB devices, of which you have many, as well as newer ones. What word do you want to see in the specs?

Accepted Answer

Backward compatibility ensures that newer USB technology can support and work with older USB devices.

Question 20

COGNITIVE ASSESSMENT Your Bluetooth headset is waiting for another Bluetooth device to locate its signal. What is this mode known as?

Accepted Answer

Discoverable mode is the mode in which a Bluetooth device is visible to other Bluetooth devices and can be connected to.

Quiz 3: Computers and Mobile Devices: Evaluating the Possibilities